This paper presents a new method of determining Ge in AuGe alloys by potassium iodate(KIO3)potentiometric titration when Ge(Ⅱ)and Au(0)are simultaneously reduced from Ge(Ⅳ)and Au(Ⅲ)by sodium hypophosphite rather th...This paper presents a new method of determining Ge in AuGe alloys by potassium iodate(KIO3)potentiometric titration when Ge(Ⅱ)and Au(0)are simultaneously reduced from Ge(Ⅳ)and Au(Ⅲ)by sodium hypophosphite rather than by distillation separation.The influences of such conditions as the reduction acidity,the dosage of sodium hypophosphite and the reduction time on the determination of Ge were studied.Ge in AuGe alloys such as AuGe_(12),AuGeNi_(12-2),AuAgGe_(18.8-12.5),and AuAgGeNi_(43.8-6-0.2)was measured with the relative standard deviation(RSD)of 0.10%-0.31%and the recoveries of added standard Ge in sample of 99.40%-100.40%under the conditions of 0.40-0.80 mol·L^(-1)HCl,3.3 mol·L^(-1)H^(3)PO^(4),15 g sodium hypophosphite,and reduction time of40 min.The new method presented is of high accuracy in results,good stability and sensibility in end-point,and easy operation and strong selectivity of determination.展开更多
The first primary organicamine templated indium iodate with the formula （H2en）KIn（IO3）6-2（H2O） was hydrothermally synthesized via reaction at 100 ℃ for 7 d and characterized by single-crystal X-ray diffraction ...The first primary organicamine templated indium iodate with the formula （H2en）KIn（IO3）6-2（H2O） was hydrothermally synthesized via reaction at 100 ℃ for 7 d and characterized by single-crystal X-ray diffraction and thermal analysis. The compound crystallized in a triclinic system with space group P1, a=0.69803（14） nm, b=0.70863（14） nm, c=1.2091（2） nm, a=76.417（4）°,β=79.953（4）°, γ=72.206（3）°, V=0.55012（19） nm3. Structure determination indicates that it is made up of zero-dimensional units each of which consists of [In（IO3）6]3 anion, potassium, water and ethylenediamine cation. The most striking feature of the compound is that it possesses helical hydrogen bonds formed by organic amine template, water molecules and inorganic network.展开更多
A new spectrophotometric method based on a liquid waveguide capillary cell for an enhanced detection was developed to measure nanomolar iodate concentrations.This method has a detection limit and precision of 1-2 nmol...A new spectrophotometric method based on a liquid waveguide capillary cell for an enhanced detection was developed to measure nanomolar iodate concentrations.This method has a detection limit and precision of 1-2 nmol/L,which is equivalent to 10%that of conventional methods,a recovery of 97.7%-104.0%,and a working range of 10-120 nmol/L.Water samples were collected from three estuaries and one coastal ocean for testing,and the proposed technique detected as low as 11 nmol/L and 18 nmol/L iodate in these samples.This newly developed method is helpful in understanding the biogeochemical cycle of iodine in nature.展开更多
Infrared(IR)nonlinear optical(NLO)materials have attracted tremendous interest for civil and military applications,but it remains a great contemporary challenge to develop high-effciency NLO crystals that possess suff...Infrared(IR)nonlinear optical(NLO)materials have attracted tremendous interest for civil and military applications,but it remains a great contemporary challenge to develop high-effciency NLO crystals that possess suffciently high second-harmonic generation(SHG)effciencies coupled to wide transparency ranges and high laser damage thresholds.A series of new hydrous rare-earth iodates RE(IO_(3))_(3)·(H_(2)O)(RE=Y 1,Eu 2)and La_(2)(IO_(3))_(6)(H_(2)O)(3)have been synthesized through facile hydrothermal methods.1 and 2 are isostructural,crystallizing in the polar space group P21,while 3 crystallizes in the polar space group Pc.1-3 feature three-dimensional(3D)frameworks composed of alternately connected corner-shared dis torted[REO_(x)]polyhedra(RE=Y,Eu,and La;x=8,9)and[IO_(3)]^(−)groups.Optical studies showed that 1–3 exhibit good NLO properties,including strong SHG intensities(3.0×(1),4.5×(2),and 1.5×KH_(2)PO_(4)(3)),large band gaps(4.12(1),4.36(2),and 4.24 eV(3),with 2 possessing the largest band gap among the known SHG-active rare-earth-based iodates,high laser damage thresholds(LDT)(53×(1),43×(2),and 44×AgGaS_(2)(3)),and wide transparency ranges(ca.3.0–11.3μm)in the mid-IR region covering two criti cal IR transparency windows;1–3 are therefore potential candidate NLO materials.Density functional theory calculations on 1–3 confirm that their strong SHG responses and large band gaps are mainly derived from the synergistic effect of[IO_(3)]^(−)groups and rare-earth oxide polyhedra[REOx]in their 3D frameworks.We conclude that the introduction of rare-earth cations with moderate electropositivity into iodates may optimize the balance between SHG effciency and optical band gaps,the key requirement for high-performance NLO materials for practical applications.展开更多
Exploration of new iodates is crucial due to their splendid applications in the nonlinear optical(NLO)field.Two new IIIA metal iodate-selenates,namely,[M(OH)_(2)]_(3)(IO_(3))(SeO_(4))·H_(2)O(M=Ga and In),have bee...Exploration of new iodates is crucial due to their splendid applications in the nonlinear optical(NLO)field.Two new IIIA metal iodate-selenates,namely,[M(OH)_(2)]_(3)(IO_(3))(SeO_(4))·H_(2)O(M=Ga and In),have been successfully synthesized using the hexagonal tungsten oxide(HTO)framework as an ideal structural template.Isostructural[M(OH)_(2)]_(3)(IO_(3))(SeO_(4))·H_(2)O(M=Ga and In)crystallize in the polar space group P6_(3)mc.展开更多
A series of stoichiometrically similar tin(IV)iodates,A_(2)Sn(IO_(3))_(6)(A=Li,Na,K,Rb,Cs)and Sn^(2+)Sn^(4+)(IO_(3))_(6)have been hydrothermally synthesized.X-ray diffraction was used to determine the crystal structur...A series of stoichiometrically similar tin(IV)iodates,A_(2)Sn(IO_(3))_(6)(A=Li,Na,K,Rb,Cs)and Sn^(2+)Sn^(4+)(IO_(3))_(6)have been hydrothermally synthesized.X-ray diffraction was used to determine the crystal structures of the reported materials.展开更多
Effective remediation of radioactive IO3−is highly desirable for fuel reprocessing,medical waste disposal,and nuclear accidents.However,the nature of high solubility,strong mobility,and extremely hard to bind with min...Effective remediation of radioactive IO3−is highly desirable for fuel reprocessing,medical waste disposal,and nuclear accidents.However,the nature of high solubility,strong mobility,and extremely hard to bind with minerals for IO3−makes this task an enormous challenge.Herein,a metal-organic framework material[Ce(IV)-MOF-808]with available Ce(IV)sites was used to efficiently remove IO3−.Ce(IV)-MOF-808 exhibits superior selectivity and one of the highest adsorption capacities(623 mg·g^(-1))for IO3−removal.Moreover,Ce(IV)-MOF-808 shows great adsorption performance for IO3−at low concentrations,and the distribution coefficient(Kd)value was calculated to be 2.60×10^(6)mL·g^(-1).The exceptional IO3−uptake performance is attributed to the high affinity between Ce(IV)cluster and the oxyanion based on the comprehensive analysis of zeta potential and X-ray photoelectron spectroscopy(XPS)results,in which IO3−can easily replace the weakly coordinated ligand and form a strong coordination structure of Ce-O-I-O2.More importantly,Ce(IV)-MOF-808 exhibits excellent uptake performance for IO3−from both the simulated Beishan groundwater system and Hanford groundwater system in the dynamic column separation test,indicating the highly promising practical application of Ce(IV)-MOF-808 in IO3−remediation from actual radioactive wastes.展开更多
Metal iodates with a lone-pair containing I(V)that is in an asymmetric coordination geometry can form a diversity of unusual structures and many of them are promising new second homonic generation(SHG)materials.They e...Metal iodates with a lone-pair containing I(V)that is in an asymmetric coordination geometry can form a diversity of unusual structures and many of them are promising new second homonic generation(SHG)materials.They exhibit wide transparency wavelength regions,large SHG coefficients and high optical-damage thresholds as well as moderately high thermal stability.In this paper,the structures and properties of the metal iodates are reviewed.The combination of d0 transition-metal cations with the iodate groups afforded a large number of metal iodates,with cations covering alkali metal,alkaline earth and lanthanide elements.Many of them are noncentrosymmetric(NCS)and display excellent SHG properties due to the additive effects of polarizations from both types of the asymmetric units.Some lanthanide iodates are able to emit strong luminescence in the visible or near-IR regions.The use of transition metal ions with dn(n≠0)electronic configuration into iodate systems can also induce the formation of NCS compounds when the lone pairs of the iodate groups are properly aligned.The dn transition metal cations are normally octahedrally coordinated or in a square-planar coordination geometry.Furthermore,the combination of two different types of lone-pair-containing cations is also an effective strategy to design new SHG materials.展开更多
A surface-renewable tris(1, 10-phenanthroline-5,6-dione)iron (Ⅱ)hexafluorophosphate (FePD) modified carbon ceramic electrode was constructed by dispersing FePD andgraphite powder in methyltrimethoxysilane (MTMOS) bas...A surface-renewable tris(1, 10-phenanthroline-5,6-dione)iron (Ⅱ)hexafluorophosphate (FePD) modified carbon ceramic electrode was constructed by dispersing FePD andgraphite powder in methyltrimethoxysilane (MTMOS) based gels. The FePD-modified electrode presentedpH-dependent voltammetric behavior, and its peak currents were diffusion-controlled in 0.1 mol/LNa_2SO_4 + H_2SO_4 solution (pH = 0.4). In the presence of iodate, clear electrocatalytic reductionwaves were observed and thus the chemically modified electrode was used as an amperometric sensorfor iodate in common salt. The linear range, sensitivity, detection limit and response time of theiodate sensor were 5 x 10^(-6)―1 x 10~2 mol/L, 7.448 μA·L/mmol, 1.2 x 10^(-6) mol/L and 5 s,respectively. A distinct advantage of this sensor is its good reproducibility of surface-renewal bysimple mechanical polishing.展开更多
The reaction between iodate and thiourea has been studied in an unbuffered acidic medium. In excess iodate the reaction shows not only oligooscillations in pH, Pt potential and the concentration of iodide ion, [I?], b...The reaction between iodate and thiourea has been studied in an unbuffered acidic medium. In excess iodate the reaction shows not only oligooscillations in pH, Pt potential and the concentration of iodide ion, [I?], but also an initial induction period which has the linear relation with initial pH. At the end of the induction period, [I?] decreases sharply and a yellow coloration (due to iodine) appears transiently. While in excess thiourea iodine is produced and finally con- sumed, leaving milky deposits (due to sulfur) at the end of the reaction. The induction period from the start of the reaction to the maximum of [I2] is also directly proportional to initial pH. A 14-step mechanism, including a H+-mediated preequalibrium, Dusman reaction, iodine-sulfur reactions and sulfur-sulfur reactions, is proposed. Computer simulations using this mechanism give good agreement with experiments.展开更多
A new gadolinium iodate has been synthesized via hydrothermal method,and its structure was determined as[Gd(H2O)(IO3)2(IO3H2O)]n(1)by X-ray single-crystal diffraction.The 2-D layer is built from the linkage of Gd2O16I...A new gadolinium iodate has been synthesized via hydrothermal method,and its structure was determined as[Gd(H2O)(IO3)2(IO3H2O)]n(1)by X-ray single-crystal diffraction.The 2-D layer is built from the linkage of Gd2O16I4 dimer viaμ2/μ3-bridged iodates,and the quasi-3-D network is generated via weak I···O bonds and hydrogen bonds.FTIR,powder X-ray diffraction(PXRD)and UV-Vis spectra were conducted to characterize the as-synthesized sample.Interestingly,1 exhibits green emission,which might be assigned to electronic transfer within iodate groups.The UV adsorption of 1 hints its UV light-driven photocatalytic property,and as expected,it exhibits photocatalytic activity for the degradation of rhodamine B.Theoretical calculation was conducted to give structure/property correlation.展开更多
A new layered yttrium iodate[Y(IO3)3(H2O)2]n(1)has been prepared from the hydrothermal reaction of Y(NO3)3?6H2O with I2O5 at 170℃,and its structure was determined by X-ray single-crystal diffraction method.It belongs...A new layered yttrium iodate[Y(IO3)3(H2O)2]n(1)has been prepared from the hydrothermal reaction of Y(NO3)3?6H2O with I2O5 at 170℃,and its structure was determined by X-ray single-crystal diffraction method.It belongs to the triclinic system,space group P1 with a=7.355(5),b=7.515(5),c=9.413(7)?,α=79.65(2)o,β=85.18(3)o,γ=71.870(19)o,Z=2,V=486.2(6)?3.1 was further characterized by FTIR,powder X-ray diffraction(PXRD)and UV-Vis spectra.In 1,the Y centers in a monocapped trigonal prism environment are bound by IO-3 anion and unique circle-shaped I4O12 polyiodate anion to generate a wave-like 2-D layer.The adjacent layers are further linked with each other by hydrogen bonds to form a quasi-3-D supramolecular network.1 exhibits a reverse saturation absorption and a self-defocusing effect with the nonlinear absorption coefficientβbeing–0.66×10-5 mW-1,which stems mainly from the electron transition from O-2p to I-5p orbital within iodates upon theoretical calculation.展开更多
In this study, glassy carbon electrode modified by silver nanoparticles/carbon nanotube/reduced graphene oxide(AgNPs/CNT/rGO) composite has been utilized as a platform to immobilize cis-dioxomolybdenum(VI)–salicylald...In this study, glassy carbon electrode modified by silver nanoparticles/carbon nanotube/reduced graphene oxide(AgNPs/CNT/rGO) composite has been utilized as a platform to immobilize cis-dioxomolybdenum(VI)–salicylaldehydehistidine(MoO_2/Sal-His). The modified electrode shows two reversible redox couples for MoO_2/Sal-His. Electrocatalytic oxidation of cysteine(CySH) and electrocatalytic reduction of iodate on the surface of the modified electrode were investigated with cyclic voltammetry and electrochemical impedance spectroscopy methods. The presence of MoO_2/SalHis on AgNPs/CNT/rGO shifted the catalytic current of iodate reduction to a more positive potential and the catalytic current of cysteine oxidation to a more negative potential. The change of interfacial charge transfer resistance(R_(ct))recorded by the modified electrode was monitored for sensitive quantitative detection of CySH and iodate. Moreover, the sensor has a good stability, and it can be renewed easily and repeatedly through a mechanical or electrochemical process.展开更多
A new mixed metal iodate, namely Ag Cu（IO3）3, has been prepared using hydrothermal method. Ag Cu（IO3）3 crystallizes in the triclinic group P1 with a = 7.3063（6）, b = 7.8050（6）, c = 8.2447（6） A, α = 67.212（...A new mixed metal iodate, namely Ag Cu（IO3）3, has been prepared using hydrothermal method. Ag Cu（IO3）3 crystallizes in the triclinic group P1 with a = 7.3063（6）, b = 7.8050（6）, c = 8.2447（6） A, α = 67.212（7）, β = 74.978（7）, γ = 80.972（7）°, V = 417.80（6） A^3 and Z = 2. The structure features one-dimensional [Cu（IO3）3]n^n- anionic chains that are separated by Ag~＋ cations. Such [Cu（IO3）3]n^n- chain is composed of [Cu2O（11）]n chain decorated by unidentate hanging and bidentate bridging iodate groups. Thermal study implies that Ag Cu（IO3）3 is thermally stable up to 460 oC and the optical measurement determined the optical band gap of 3.11 eV with a broad absorption band centered at 765 nm. Magnetic investigations show that Ag Cu（IO3）3 is a soft ferromagnet.展开更多
Double fortified salt containing both potassium iodate and ferrous fumarate microcapsules was produced at an Indian commercial facility. The packaged product became discolored, turning yellow, to a degree that would i...Double fortified salt containing both potassium iodate and ferrous fumarate microcapsules was produced at an Indian commercial facility. The packaged product became discolored, turning yellow, to a degree that would impact consumer acceptance. Therefore, there was a need for an investigation into the cause and possible remedy for this discoloration. The components of the fortified salt product, storage conditions, and processing characteristics were taken into consideration. Canadian and Indian salt samples were prepared unfortified as well as with iodine and/or iron microcapsules;stored at 25°C and 45°C in glass, polyethylene, or commercial polymer film. Some samples were heat treated prior to storage. Salt samples containing iodine that were heated before storage in packaging material turned yellow in color. From this study, it was found that due to heat and the presence of a sacrificial antioxidant component in the packaging film, potassium iodate was reduced to elemental iodine (I<sub>2</sub>) turning packaged salt samples to a yellow/orange color. Hence it is recommended that in the manufacture of foods containing potassium iodate, the packaging material selected should be free from readily accessible antioxidants.展开更多
Iodine Deficiency Diseases (IDDs) occupy important positions in the health problems of developing countries. Salt Iodisation has been the common approach to solving these problems. However, apart from the problems of ...Iodine Deficiency Diseases (IDDs) occupy important positions in the health problems of developing countries. Salt Iodisation has been the common approach to solving these problems. However, apart from the problems of lack of compliance by salt manufacturers, and inculturation of the consumers, health conditions aggravated by high salt intake by humans have become increasingly relevant. These problems can be eliminated if the commonly produced and consumed plants are fortified with Iodine. The prospects are in the inclusion of Iodine-containing compounds in the inorganic fertilizers used by farmers. In this study, Potassium Iodide and Potassium Iodate were used as inoculants. Five different concentrations—0.1 M, 0.2 M, 0.3 M, 0.4 M, and 0.5 M of Potassium Iodide and Potassium Iodate solutions were used to inoculate the soils on which the following edible African plants were planted: Murraya koenigii;Ocimum gratissimum;Cucurbita pepo;Solanum nigrum;Amaranthus hybridus and Abelmoschus esclentus, Corchorous olitoruis, Solanum lycopersicum, Zingiber officinale, Telfairia occidentalis, Talinium triangulare, Solanum melongena. Controls were also planted. After 14 days, alkaline dry ash method was used to determine the Iodine concentrations in the plants. The results showed that Murraya koenigii showed the highest absorption of Iodine 6.90 mg/kg at 0.3 M using KI, followed by Amaranthus hybridus 6.40 mg/kg at 0.1 M. Solanum nigrum, Ocimum gratissimum and Zingiber officinale also showed good absorption. Other plants except Murraya koenigii, Ocimum gratissimum, Solanum nigrum and Zingiber officinale showed very low tolerance to KI absorption. The result also showed that Telfairia occidentalis showed the highest absorption of iodine 8.20 mg/kg at 0.2 M of KIO3 followed by Cucurbita pepo 6.40 mg/kg at also 0.2 M of KIO3. Murraya koenigii, Ocimum gratissimum, Solanum nigrum, Zingiber officinale also showed good absorption of KIO3. Some of the plants were not able to tolerate the absorption at higher concentration for both KI and KIO3. All the plants were poisoned at concentration of 0.5 M for both Ki and KIO3. Murraya koenigii, Ocimum gratissimum, Solanum nigrum, Zingiber officinale can be used in iodine biofortification using KI and KIO3 at concentration < 0.5 M. The overall result may be very significant, when it is considered that Iodine is a micronutrient, with a daily intake requirement of 100 - 150 μg/kg. It can be seen that there is hope in achieving this kind of biofortification.展开更多
We investigated dissolved iodine species in seawater from the northern South China Sea Shelf.Iodide concentrations were determined by cathodic stripping square wave voltammetry,and iodate was measured by spectrophotom...We investigated dissolved iodine species in seawater from the northern South China Sea Shelf.Iodide concentrations were determined by cathodic stripping square wave voltammetry,and iodate was measured by spectrophotometry.Dissolved organic iodine(DOI)was measured with reference to reduced iodide.R-TDI(R-X or rationalized-X is the concentration of X normalized to a salinity of 35,TDI represents total dissolved iodine)was in the range of 0.43–0.46μmol/L,showing a relatively conservative behavior,while iodate,iodide,and DOI showed non-conservative behaviors.Distribution characteristics in the surface waters showed R-iodate values in the 0.28–0.32μmol/L range and an offshore>inshore trend,while R-iodide was in the 0.11–0.19μmol/L range and R-DOI in the 0–0.07μmol/L range,reflecting an inshore>offshore trend for both.The vertical distribution showed the highest R-iodide concentrations in the surface waters and decreased values with depth,reaching less than0.01μmol/L at depths>200 m.R-iodate increased with depth with a measured peak value of 0.43μmol/L.Seawater with high iodate/iodide ratio(up to 2.9)was found in the central upwelling region and gradually decreased to 2.0 far from this center.The relationship between R-iodide and R-iodate among all samples followed the 1:1 relationship with a slope slightly less than 1,indicating that the conversion between iodate and iodide species could not account for the observed changes.This finding also suggests that DOI may be an important participant in the mass balance.A box model was applied to calculate the input and output of iodine species,and the result showed that approximately 8%of iodate(1.50×10~8 mol/a)imported to the shelf sea was reduced.Concomitantly,the amount of iodide and DOI produced in the shelf amounted to 1.07×10~8 mol/a,roughly 14%higher than the input iodide.展开更多
This study determined concentrations of iodine, consistent with WHO iodine fortification standards, in commercial edible salts mostly consumed in Harper. The following hypothesis was put forward in the research study;...This study determined concentrations of iodine, consistent with WHO iodine fortification standards, in commercial edible salts mostly consumed in Harper. The following hypothesis was put forward in the research study;H<sub>1</sub>: the iodine content of the two brands of iodized salts is different from the WHO iodine fortification levels;H<sub>0</sub>: the iodine content of the two brands of iodized salts is not different from the WHO iodine fortification levels. The hypothesis was tested in MS Excel 2010 and 2016 via the T-Test function giving p-value = 0.1476 and p-value = 0.0395 indicative of no significant difference in the iodine concentration of the salts compared with the lower limit of WHO standard 20 mg·Kg<sup>-1</sup> and huge contrast in the iodine concentration of the salts compared with the upper limit of WHO standard 40 mg·Kg<sup>-1</sup> respectively. The UV spectrophotometric method was used to analyze and measure the iodine concentration in the twelve (12) samples of two different brands bought from grocery stores in Harper city. Results indicated that all samples of the two (2) brands of iodized salts contained iodine of no significant difference relative to the lower limit of WHO standard but far below the upper limit of the WHO standard. The study therefore recommends monitoring of commercial iodized salts by appropriate authorities in Harper to ascertain the WHO iodization fortification standards before reaching consumers.展开更多
The β-HIO3 polymorph, previously difficult to detect and whose existence was questioned, has been structurally characterized. The crystal structure of β-HIO3 was solved in the same space group as α-HIO3 (P212121);h...The β-HIO3 polymorph, previously difficult to detect and whose existence was questioned, has been structurally characterized. The crystal structure of β-HIO3 was solved in the same space group as α-HIO3 (P212121);however, it was found that the unit cell axes were all different by about 1 Å. Similar to that of α and γ phases, the unit cell contains only a single HIO3 molecule in the asymmetric unit with I-O bond lengths ranging from 1.786(5) to 1.903(7) Å. The I(V) atom is further coordinated by three oxygen atoms of neighboring acid molecules forming a distorted octahedral with a range of I-O distances (2.498(6) - 2.795(7) Å). The one structural difference that separates the β phase from the α and γ phases is that the hydroxyl group is bridging between two I(V) atoms, resulting in a smaller hydrogen bonding distance (O-O distance: 2.559 Å(β), 2.665 Å(γ) and 2.696 Å(α)) and presumably a different crystalline energy. Similar to γ-HIO3, β-HIO3 is metastable and slowly converts to α-HIO3. It is hypothesized that β-HIO3 is a transition step in the formation of α-HIO3 and β-HIO3 is a result of trapped water inside particles during crystallization.展开更多
Perovskite nanoplatelets(NPLs)display excellent photoluminescence(PL)properties and unique shape features,including thickness-dependent bandgap luminescence.However,perovskite NPLs,especially those based on iodides,ex...Perovskite nanoplatelets(NPLs)display excellent photoluminescence(PL)properties and unique shape features,including thickness-dependent bandgap luminescence.However,perovskite NPLs,especially those based on iodides,exhibit poor spectral and phase stability.Herein,we propose a facile strategy to achieve a near-unity PL quantum yield(QY)and high stability of CsPbI_(3) NPLs by employing hydrogen iodate(HI)for in situ etching-assisted surface modification of the short-chain strongly bound ligand dodecylamine(DDDAm).It is found that HI can etch off the incomplete octahedron[PbI_(6)]^(4-)on the surface of CsPbI_(3) NPLs.Simultaneously,the excessive use of I^(-)ions and the introduction of DDDAm ligands effectively passivate the surface defects of NPLs,significantly improving their radiation recombination rate.As a result,the as-prepared CsPbI_(3) NPLs exhibit up to 95%PL QY,maintaining PL characteristics even after 87 days of exposure to the atmospheric environment.Conversely,untreated CsPbI_(3) NPLs display poor phase stability and transform into non-PL features(δ-CsPbI_(3))after 21 days.As a proof of concept,we fabricated perovskite LEDs(PeLEDs)using these treated CsPbI_(3) NPLs as luminescent layers for calibration.These PeLEDs showcase bright electroluminescence at 600 nm,with a full width at half maximum of 22 nm and an external quantum efficiency of 2.98%.The effective synthesis strategy using HI^(-)assisted ligand treatment presented here is expected to be extended to the synthesis of other perovskite NPLs,thereby accelerating the integration of perovskite NPLs in optoelectronic technology.展开更多
基金the National High Technology Research and Development Program of China (Nos.2012AA063203 and 2012AA063207)。
文摘This paper presents a new method of determining Ge in AuGe alloys by potassium iodate(KIO3)potentiometric titration when Ge(Ⅱ)and Au(0)are simultaneously reduced from Ge(Ⅳ)and Au(Ⅲ)by sodium hypophosphite rather than by distillation separation.The influences of such conditions as the reduction acidity,the dosage of sodium hypophosphite and the reduction time on the determination of Ge were studied.Ge in AuGe alloys such as AuGe_(12),AuGeNi_(12-2),AuAgGe_(18.8-12.5),and AuAgGeNi_(43.8-6-0.2)was measured with the relative standard deviation(RSD)of 0.10%-0.31%and the recoveries of added standard Ge in sample of 99.40%-100.40%under the conditions of 0.40-0.80 mol·L^(-1)HCl,3.3 mol·L^(-1)H^(3)PO^(4),15 g sodium hypophosphite,and reduction time of40 min.The new method presented is of high accuracy in results,good stability and sensibility in end-point,and easy operation and strong selectivity of determination.
基金Supported by the National Natural Science Foundation of China(Nos.20671040, 20971054 and 90922034)New Century Excellent Talents in University of China and the Key Project of Chinese Ministry of Education(No.2009-49)
文摘The first primary organicamine templated indium iodate with the formula （H2en）KIn（IO3）6-2（H2O） was hydrothermally synthesized via reaction at 100 ℃ for 7 d and characterized by single-crystal X-ray diffraction and thermal analysis. The compound crystallized in a triclinic system with space group P1, a=0.69803（14） nm, b=0.70863（14） nm, c=1.2091（2） nm, a=76.417（4）°,β=79.953（4）°, γ=72.206（3）°, V=0.55012（19） nm3. Structure determination indicates that it is made up of zero-dimensional units each of which consists of [In（IO3）6]3 anion, potassium, water and ethylenediamine cation. The most striking feature of the compound is that it possesses helical hydrogen bonds formed by organic amine template, water molecules and inorganic network.
基金The Zhangzhou Natural Science Foundation of Fujian under contract No.ZZ2020J29。
文摘A new spectrophotometric method based on a liquid waveguide capillary cell for an enhanced detection was developed to measure nanomolar iodate concentrations.This method has a detection limit and precision of 1-2 nmol/L,which is equivalent to 10%that of conventional methods,a recovery of 97.7%-104.0%,and a working range of 10-120 nmol/L.Water samples were collected from three estuaries and one coastal ocean for testing,and the proposed technique detected as low as 11 nmol/L and 18 nmol/L iodate in these samples.This newly developed method is helpful in understanding the biogeochemical cycle of iodine in nature.
基金supported by the National Natural Science Foundation of China(no.51432006)the Ministry of Education of China for the Changjiang Innovation Research Team(no.IRT13R24)+1 种基金the Ministry of Education and the State Administration of Foreign Experts Affairs for the 111 Project(no.B13025)the Innovation Program of Shanghai Municipal Education Commission.M.G.H.and C.Z.thank the Australian Research Council for support(DP170100411).
文摘Infrared(IR)nonlinear optical(NLO)materials have attracted tremendous interest for civil and military applications,but it remains a great contemporary challenge to develop high-effciency NLO crystals that possess suffciently high second-harmonic generation(SHG)effciencies coupled to wide transparency ranges and high laser damage thresholds.A series of new hydrous rare-earth iodates RE(IO_(3))_(3)·(H_(2)O)(RE=Y 1,Eu 2)and La_(2)(IO_(3))_(6)(H_(2)O)(3)have been synthesized through facile hydrothermal methods.1 and 2 are isostructural,crystallizing in the polar space group P21,while 3 crystallizes in the polar space group Pc.1-3 feature three-dimensional(3D)frameworks composed of alternately connected corner-shared dis torted[REO_(x)]polyhedra(RE=Y,Eu,and La;x=8,9)and[IO_(3)]^(−)groups.Optical studies showed that 1–3 exhibit good NLO properties,including strong SHG intensities(3.0×(1),4.5×(2),and 1.5×KH_(2)PO_(4)(3)),large band gaps(4.12(1),4.36(2),and 4.24 eV(3),with 2 possessing the largest band gap among the known SHG-active rare-earth-based iodates,high laser damage thresholds(LDT)(53×(1),43×(2),and 44×AgGaS_(2)(3)),and wide transparency ranges(ca.3.0–11.3μm)in the mid-IR region covering two criti cal IR transparency windows;1–3 are therefore potential candidate NLO materials.Density functional theory calculations on 1–3 confirm that their strong SHG responses and large band gaps are mainly derived from the synergistic effect of[IO_(3)]^(−)groups and rare-earth oxide polyhedra[REOx]in their 3D frameworks.We conclude that the introduction of rare-earth cations with moderate electropositivity into iodates may optimize the balance between SHG effciency and optical band gaps,the key requirement for high-performance NLO materials for practical applications.
基金supported by the National Natural Science Foundation of China(no.22031009,21921001,and 21975256).
文摘Exploration of new iodates is crucial due to their splendid applications in the nonlinear optical(NLO)field.Two new IIIA metal iodate-selenates,namely,[M(OH)_(2)]_(3)(IO_(3))(SeO_(4))·H_(2)O(M=Ga and In),have been successfully synthesized using the hexagonal tungsten oxide(HTO)framework as an ideal structural template.Isostructural[M(OH)_(2)]_(3)(IO_(3))(SeO_(4))·H_(2)O(M=Ga and In)crystallize in the polar space group P6_(3)mc.
基金supported by the National Research Foundation of Korea(NRF)funded by the Korea government(MSIP)(grants:2013R1A2A2A01007170 and 2014M3A9B8023478)TTT and PSH thank the Welch Foundation(E-1457)for support.
文摘A series of stoichiometrically similar tin(IV)iodates,A_(2)Sn(IO_(3))_(6)(A=Li,Na,K,Rb,Cs)and Sn^(2+)Sn^(4+)(IO_(3))_(6)have been hydrothermally synthesized.X-ray diffraction was used to determine the crystal structures of the reported materials.
基金supported by the Intergovernmental International Cooperation of the National Key R&D Program of China(2022YFE0105300)the National Key R&D Program of China (2021YFB3200400)+5 种基金the National Natural Science Foundation of China (22306136, 22425061, 22176139, U2267222, and U1967217)the China National Postdoctoral Program for Innovative Talents (BX2021206)the China Postdoctoral Science Foundation (2021M702390)the Natural Science Foundation of Jiangsu (BK20230510)the New Cornerstone Science Foundation through the XPLORER PRIZEthe Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
文摘Effective remediation of radioactive IO3−is highly desirable for fuel reprocessing,medical waste disposal,and nuclear accidents.However,the nature of high solubility,strong mobility,and extremely hard to bind with minerals for IO3−makes this task an enormous challenge.Herein,a metal-organic framework material[Ce(IV)-MOF-808]with available Ce(IV)sites was used to efficiently remove IO3−.Ce(IV)-MOF-808 exhibits superior selectivity and one of the highest adsorption capacities(623 mg·g^(-1))for IO3−removal.Moreover,Ce(IV)-MOF-808 shows great adsorption performance for IO3−at low concentrations,and the distribution coefficient(Kd)value was calculated to be 2.60×10^(6)mL·g^(-1).The exceptional IO3−uptake performance is attributed to the high affinity between Ce(IV)cluster and the oxyanion based on the comprehensive analysis of zeta potential and X-ray photoelectron spectroscopy(XPS)results,in which IO3−can easily replace the weakly coordinated ligand and form a strong coordination structure of Ce-O-I-O2.More importantly,Ce(IV)-MOF-808 exhibits excellent uptake performance for IO3−from both the simulated Beishan groundwater system and Hanford groundwater system in the dynamic column separation test,indicating the highly promising practical application of Ce(IV)-MOF-808 in IO3−remediation from actual radioactive wastes.
基金supported by the National Natural Science Foundation of China(20731006,20825104&21003127)
文摘Metal iodates with a lone-pair containing I(V)that is in an asymmetric coordination geometry can form a diversity of unusual structures and many of them are promising new second homonic generation(SHG)materials.They exhibit wide transparency wavelength regions,large SHG coefficients and high optical-damage thresholds as well as moderately high thermal stability.In this paper,the structures and properties of the metal iodates are reviewed.The combination of d0 transition-metal cations with the iodate groups afforded a large number of metal iodates,with cations covering alkali metal,alkaline earth and lanthanide elements.Many of them are noncentrosymmetric(NCS)and display excellent SHG properties due to the additive effects of polarizations from both types of the asymmetric units.Some lanthanide iodates are able to emit strong luminescence in the visible or near-IR regions.The use of transition metal ions with dn(n≠0)electronic configuration into iodate systems can also induce the formation of NCS compounds when the lone pairs of the iodate groups are properly aligned.The dn transition metal cations are normally octahedrally coordinated or in a square-planar coordination geometry.Furthermore,the combination of two different types of lone-pair-containing cations is also an effective strategy to design new SHG materials.
基金theMinistryofScienceandTechnologyofChina (No .2 0 0 1BA2 10A0 4 )
文摘A surface-renewable tris(1, 10-phenanthroline-5,6-dione)iron (Ⅱ)hexafluorophosphate (FePD) modified carbon ceramic electrode was constructed by dispersing FePD andgraphite powder in methyltrimethoxysilane (MTMOS) based gels. The FePD-modified electrode presentedpH-dependent voltammetric behavior, and its peak currents were diffusion-controlled in 0.1 mol/LNa_2SO_4 + H_2SO_4 solution (pH = 0.4). In the presence of iodate, clear electrocatalytic reductionwaves were observed and thus the chemically modified electrode was used as an amperometric sensorfor iodate in common salt. The linear range, sensitivity, detection limit and response time of theiodate sensor were 5 x 10^(-6)―1 x 10~2 mol/L, 7.448 μA·L/mmol, 1.2 x 10^(-6) mol/L and 5 s,respectively. A distinct advantage of this sensor is its good reproducibility of surface-renewal bysimple mechanical polishing.
基金This work was supported by the National Natural Science Foundation of China(Grant Nos.20103010 and 20073039).
文摘The reaction between iodate and thiourea has been studied in an unbuffered acidic medium. In excess iodate the reaction shows not only oligooscillations in pH, Pt potential and the concentration of iodide ion, [I?], but also an initial induction period which has the linear relation with initial pH. At the end of the induction period, [I?] decreases sharply and a yellow coloration (due to iodine) appears transiently. While in excess thiourea iodine is produced and finally con- sumed, leaving milky deposits (due to sulfur) at the end of the reaction. The induction period from the start of the reaction to the maximum of [I2] is also directly proportional to initial pH. A 14-step mechanism, including a H+-mediated preequalibrium, Dusman reaction, iodine-sulfur reactions and sulfur-sulfur reactions, is proposed. Computer simulations using this mechanism give good agreement with experiments.
文摘A new gadolinium iodate has been synthesized via hydrothermal method,and its structure was determined as[Gd(H2O)(IO3)2(IO3H2O)]n(1)by X-ray single-crystal diffraction.The 2-D layer is built from the linkage of Gd2O16I4 dimer viaμ2/μ3-bridged iodates,and the quasi-3-D network is generated via weak I···O bonds and hydrogen bonds.FTIR,powder X-ray diffraction(PXRD)and UV-Vis spectra were conducted to characterize the as-synthesized sample.Interestingly,1 exhibits green emission,which might be assigned to electronic transfer within iodate groups.The UV adsorption of 1 hints its UV light-driven photocatalytic property,and as expected,it exhibits photocatalytic activity for the degradation of rhodamine B.Theoretical calculation was conducted to give structure/property correlation.
文摘A new layered yttrium iodate[Y(IO3)3(H2O)2]n(1)has been prepared from the hydrothermal reaction of Y(NO3)3?6H2O with I2O5 at 170℃,and its structure was determined by X-ray single-crystal diffraction method.It belongs to the triclinic system,space group P1 with a=7.355(5),b=7.515(5),c=9.413(7)?,α=79.65(2)o,β=85.18(3)o,γ=71.870(19)o,Z=2,V=486.2(6)?3.1 was further characterized by FTIR,powder X-ray diffraction(PXRD)and UV-Vis spectra.In 1,the Y centers in a monocapped trigonal prism environment are bound by IO-3 anion and unique circle-shaped I4O12 polyiodate anion to generate a wave-like 2-D layer.The adjacent layers are further linked with each other by hydrogen bonds to form a quasi-3-D supramolecular network.1 exhibits a reverse saturation absorption and a self-defocusing effect with the nonlinear absorption coefficientβbeing–0.66×10-5 mW-1,which stems mainly from the electron transition from O-2p to I-5p orbital within iodates upon theoretical calculation.
基金the Khorramabad Branch, Islamic Azad University, for financial support
文摘In this study, glassy carbon electrode modified by silver nanoparticles/carbon nanotube/reduced graphene oxide(AgNPs/CNT/rGO) composite has been utilized as a platform to immobilize cis-dioxomolybdenum(VI)–salicylaldehydehistidine(MoO_2/Sal-His). The modified electrode shows two reversible redox couples for MoO_2/Sal-His. Electrocatalytic oxidation of cysteine(CySH) and electrocatalytic reduction of iodate on the surface of the modified electrode were investigated with cyclic voltammetry and electrochemical impedance spectroscopy methods. The presence of MoO_2/SalHis on AgNPs/CNT/rGO shifted the catalytic current of iodate reduction to a more positive potential and the catalytic current of cysteine oxidation to a more negative potential. The change of interfacial charge transfer resistance(R_(ct))recorded by the modified electrode was monitored for sensitive quantitative detection of CySH and iodate. Moreover, the sensor has a good stability, and it can be renewed easily and repeatedly through a mechanical or electrochemical process.
基金supported by the Natural Science Foundation of Fujian Province(No.2015J05045)the National Natural Science Foundation of China(No.21373222,21231006)
文摘A new mixed metal iodate, namely Ag Cu（IO3）3, has been prepared using hydrothermal method. Ag Cu（IO3）3 crystallizes in the triclinic group P1 with a = 7.3063（6）, b = 7.8050（6）, c = 8.2447（6） A, α = 67.212（7）, β = 74.978（7）, γ = 80.972（7）°, V = 417.80（6） A^3 and Z = 2. The structure features one-dimensional [Cu（IO3）3]n^n- anionic chains that are separated by Ag~＋ cations. Such [Cu（IO3）3]n^n- chain is composed of [Cu2O（11）]n chain decorated by unidentate hanging and bidentate bridging iodate groups. Thermal study implies that Ag Cu（IO3）3 is thermally stable up to 460 oC and the optical measurement determined the optical band gap of 3.11 eV with a broad absorption band centered at 765 nm. Magnetic investigations show that Ag Cu（IO3）3 is a soft ferromagnet.
文摘Double fortified salt containing both potassium iodate and ferrous fumarate microcapsules was produced at an Indian commercial facility. The packaged product became discolored, turning yellow, to a degree that would impact consumer acceptance. Therefore, there was a need for an investigation into the cause and possible remedy for this discoloration. The components of the fortified salt product, storage conditions, and processing characteristics were taken into consideration. Canadian and Indian salt samples were prepared unfortified as well as with iodine and/or iron microcapsules;stored at 25°C and 45°C in glass, polyethylene, or commercial polymer film. Some samples were heat treated prior to storage. Salt samples containing iodine that were heated before storage in packaging material turned yellow in color. From this study, it was found that due to heat and the presence of a sacrificial antioxidant component in the packaging film, potassium iodate was reduced to elemental iodine (I<sub>2</sub>) turning packaged salt samples to a yellow/orange color. Hence it is recommended that in the manufacture of foods containing potassium iodate, the packaging material selected should be free from readily accessible antioxidants.
文摘Iodine Deficiency Diseases (IDDs) occupy important positions in the health problems of developing countries. Salt Iodisation has been the common approach to solving these problems. However, apart from the problems of lack of compliance by salt manufacturers, and inculturation of the consumers, health conditions aggravated by high salt intake by humans have become increasingly relevant. These problems can be eliminated if the commonly produced and consumed plants are fortified with Iodine. The prospects are in the inclusion of Iodine-containing compounds in the inorganic fertilizers used by farmers. In this study, Potassium Iodide and Potassium Iodate were used as inoculants. Five different concentrations—0.1 M, 0.2 M, 0.3 M, 0.4 M, and 0.5 M of Potassium Iodide and Potassium Iodate solutions were used to inoculate the soils on which the following edible African plants were planted: Murraya koenigii;Ocimum gratissimum;Cucurbita pepo;Solanum nigrum;Amaranthus hybridus and Abelmoschus esclentus, Corchorous olitoruis, Solanum lycopersicum, Zingiber officinale, Telfairia occidentalis, Talinium triangulare, Solanum melongena. Controls were also planted. After 14 days, alkaline dry ash method was used to determine the Iodine concentrations in the plants. The results showed that Murraya koenigii showed the highest absorption of Iodine 6.90 mg/kg at 0.3 M using KI, followed by Amaranthus hybridus 6.40 mg/kg at 0.1 M. Solanum nigrum, Ocimum gratissimum and Zingiber officinale also showed good absorption. Other plants except Murraya koenigii, Ocimum gratissimum, Solanum nigrum and Zingiber officinale showed very low tolerance to KI absorption. The result also showed that Telfairia occidentalis showed the highest absorption of iodine 8.20 mg/kg at 0.2 M of KIO3 followed by Cucurbita pepo 6.40 mg/kg at also 0.2 M of KIO3. Murraya koenigii, Ocimum gratissimum, Solanum nigrum, Zingiber officinale also showed good absorption of KIO3. Some of the plants were not able to tolerate the absorption at higher concentration for both KI and KIO3. All the plants were poisoned at concentration of 0.5 M for both Ki and KIO3. Murraya koenigii, Ocimum gratissimum, Solanum nigrum, Zingiber officinale can be used in iodine biofortification using KI and KIO3 at concentration < 0.5 M. The overall result may be very significant, when it is considered that Iodine is a micronutrient, with a daily intake requirement of 100 - 150 μg/kg. It can be seen that there is hope in achieving this kind of biofortification.
基金The Zhangzhou National Science Foundation of Fujian under contract No.JJ2020J29。
文摘We investigated dissolved iodine species in seawater from the northern South China Sea Shelf.Iodide concentrations were determined by cathodic stripping square wave voltammetry,and iodate was measured by spectrophotometry.Dissolved organic iodine(DOI)was measured with reference to reduced iodide.R-TDI(R-X or rationalized-X is the concentration of X normalized to a salinity of 35,TDI represents total dissolved iodine)was in the range of 0.43–0.46μmol/L,showing a relatively conservative behavior,while iodate,iodide,and DOI showed non-conservative behaviors.Distribution characteristics in the surface waters showed R-iodate values in the 0.28–0.32μmol/L range and an offshore>inshore trend,while R-iodide was in the 0.11–0.19μmol/L range and R-DOI in the 0–0.07μmol/L range,reflecting an inshore>offshore trend for both.The vertical distribution showed the highest R-iodide concentrations in the surface waters and decreased values with depth,reaching less than0.01μmol/L at depths>200 m.R-iodate increased with depth with a measured peak value of 0.43μmol/L.Seawater with high iodate/iodide ratio(up to 2.9)was found in the central upwelling region and gradually decreased to 2.0 far from this center.The relationship between R-iodide and R-iodate among all samples followed the 1:1 relationship with a slope slightly less than 1,indicating that the conversion between iodate and iodide species could not account for the observed changes.This finding also suggests that DOI may be an important participant in the mass balance.A box model was applied to calculate the input and output of iodine species,and the result showed that approximately 8%of iodate(1.50×10~8 mol/a)imported to the shelf sea was reduced.Concomitantly,the amount of iodide and DOI produced in the shelf amounted to 1.07×10~8 mol/a,roughly 14%higher than the input iodide.
文摘This study determined concentrations of iodine, consistent with WHO iodine fortification standards, in commercial edible salts mostly consumed in Harper. The following hypothesis was put forward in the research study;H<sub>1</sub>: the iodine content of the two brands of iodized salts is different from the WHO iodine fortification levels;H<sub>0</sub>: the iodine content of the two brands of iodized salts is not different from the WHO iodine fortification levels. The hypothesis was tested in MS Excel 2010 and 2016 via the T-Test function giving p-value = 0.1476 and p-value = 0.0395 indicative of no significant difference in the iodine concentration of the salts compared with the lower limit of WHO standard 20 mg·Kg<sup>-1</sup> and huge contrast in the iodine concentration of the salts compared with the upper limit of WHO standard 40 mg·Kg<sup>-1</sup> respectively. The UV spectrophotometric method was used to analyze and measure the iodine concentration in the twelve (12) samples of two different brands bought from grocery stores in Harper city. Results indicated that all samples of the two (2) brands of iodized salts contained iodine of no significant difference relative to the lower limit of WHO standard but far below the upper limit of the WHO standard. The study therefore recommends monitoring of commercial iodized salts by appropriate authorities in Harper to ascertain the WHO iodization fortification standards before reaching consumers.
文摘The β-HIO3 polymorph, previously difficult to detect and whose existence was questioned, has been structurally characterized. The crystal structure of β-HIO3 was solved in the same space group as α-HIO3 (P212121);however, it was found that the unit cell axes were all different by about 1 Å. Similar to that of α and γ phases, the unit cell contains only a single HIO3 molecule in the asymmetric unit with I-O bond lengths ranging from 1.786(5) to 1.903(7) Å. The I(V) atom is further coordinated by three oxygen atoms of neighboring acid molecules forming a distorted octahedral with a range of I-O distances (2.498(6) - 2.795(7) Å). The one structural difference that separates the β phase from the α and γ phases is that the hydroxyl group is bridging between two I(V) atoms, resulting in a smaller hydrogen bonding distance (O-O distance: 2.559 Å(β), 2.665 Å(γ) and 2.696 Å(α)) and presumably a different crystalline energy. Similar to γ-HIO3, β-HIO3 is metastable and slowly converts to α-HIO3. It is hypothesized that β-HIO3 is a transition step in the formation of α-HIO3 and β-HIO3 is a result of trapped water inside particles during crystallization.
基金supported by the Outstanding Youth Fund of the Guangxi Natural Science Foundation(2022GXNSFFA035032)the National Natural Science Foundation of China(62165001,12174075)the special fund for“Guangxi Bagui Scholars”,and the“Guangxi Hundred-Talent Program”.
文摘Perovskite nanoplatelets(NPLs)display excellent photoluminescence(PL)properties and unique shape features,including thickness-dependent bandgap luminescence.However,perovskite NPLs,especially those based on iodides,exhibit poor spectral and phase stability.Herein,we propose a facile strategy to achieve a near-unity PL quantum yield(QY)and high stability of CsPbI_(3) NPLs by employing hydrogen iodate(HI)for in situ etching-assisted surface modification of the short-chain strongly bound ligand dodecylamine(DDDAm).It is found that HI can etch off the incomplete octahedron[PbI_(6)]^(4-)on the surface of CsPbI_(3) NPLs.Simultaneously,the excessive use of I^(-)ions and the introduction of DDDAm ligands effectively passivate the surface defects of NPLs,significantly improving their radiation recombination rate.As a result,the as-prepared CsPbI_(3) NPLs exhibit up to 95%PL QY,maintaining PL characteristics even after 87 days of exposure to the atmospheric environment.Conversely,untreated CsPbI_(3) NPLs display poor phase stability and transform into non-PL features(δ-CsPbI_(3))after 21 days.As a proof of concept,we fabricated perovskite LEDs(PeLEDs)using these treated CsPbI_(3) NPLs as luminescent layers for calibration.These PeLEDs showcase bright electroluminescence at 600 nm,with a full width at half maximum of 22 nm and an external quantum efficiency of 2.98%.The effective synthesis strategy using HI^(-)assisted ligand treatment presented here is expected to be extended to the synthesis of other perovskite NPLs,thereby accelerating the integration of perovskite NPLs in optoelectronic technology.
