In recent years,the demand for high-performance rechargeable lithium batteries has increased significantly,and many efforts have been made to boost the use of advanced electrode materials.Since graphene was first isol...In recent years,the demand for high-performance rechargeable lithium batteries has increased significantly,and many efforts have been made to boost the use of advanced electrode materials.Since graphene was first isolated by Novoselov et al.,graphene/graphene-based materials have become an active area of research and are considered to be promising high-performance electrode materials.Graphene is a two-dimensional single-atom carbon-packed material that possesses fascinating properties,including a large surface area,remarkable electrical conductivity,extraordinary intrinsic electron mobility,high Young's modulus,superior mechanical strength,optical transmittance,catalytic performance,and stability.Therefore,graphene is considered an attractive ma-terial for rechargeable lithium-ion batteries(LIBs),lithium-sulfur batteries(LSBs),and lithium-oxygen batteries(LOBs).In this comprehensive review,we emphasise the recent progress in the controllable synthesis,func-tionalisation,and role of graphene in rechargeable lithium batteries.Finally,in this review,we aim to address the most promising results,benefits,challenges,critical issues,research directions,and perspectives to explain the developmental directions of graphene for batteries.展开更多
Magnesium(Mg)alloys are promising candidates for biodegradable implants and medical devices due to their biocompatibility,mechanical properties,and ability to degrade in vivo,thereby eliminating the need for secondary...Magnesium(Mg)alloys are promising candidates for biodegradable implants and medical devices due to their biocompatibility,mechanical properties,and ability to degrade in vivo,thereby eliminating the need for secondary removal surgeries[1,2].However,their clinical adoption is hindered by rapid corrosion in physiological environments[3–5].Due to the high chemical reactivity of magnesium substrates and the inability of primary corrosion degradation products to form ideal protective layers,no effective scientific guidance has yet been identified from fundamental material science to address the rapid degradation of bare Mg[6–8].Surface modification strategies equivalently create new materials wrapped in a matrix,which can thus be extensively explored to enhance the corrosion resistance of Mg alloys while endowing them with tailored biological functionalities[9,10].展开更多
Synthesised triphenylphosphine-linked multiwalled carbon nanotubes （Tpp-MWCNTs） were used to study the adsorption of nickel in aqueous solutions and their adsorption capabilities were compared with purified MWCNTs.T...Synthesised triphenylphosphine-linked multiwalled carbon nanotubes （Tpp-MWCNTs） were used to study the adsorption of nickel in aqueous solutions and their adsorption capabilities were compared with purified MWCNTs.The adsorption capacity increased with an increase in pH for all adsorbents.The adsorption equilibrium was reached in 40 and 30 min for purified MWCNTs and Tpp-MWCNTs,respectively.Both Freundlich and Langmuir isotherms used to investigate the adsorption process fitted the experimental data well with the correlation coefficient R 2 close to 1 for all adsorbents.On the other hand,the experimental data fitted well with a pseudo secondorder model.The speciation of nickel also influenced the adsorption on the purified and Tpp-MWCNTs.The adsorbents used in this study showed superior adsorption capacity when compared to other adsorbents reported in the literature.展开更多
A mono-funtionalised tetraphenylporphyrin (TPP) bearing valine moiety at the phenylring was synthesized for photocytotoxicity examination in four steps, starting from regiospecificmono-nitration of TPP at the phenyl r...A mono-funtionalised tetraphenylporphyrin (TPP) bearing valine moiety at the phenylring was synthesized for photocytotoxicity examination in four steps, starting from regiospecificmono-nitration of TPP at the phenyl ring. The in vitro photocytotoxicitic effect against SPC-Aladenocarcinona cell line was tested.展开更多
The antibacterial activities,cytotoxicity,and wound healing of amine(3-aminopropyltriethoxysilane (APTES))-functionalised zeolite Y against normal human fibroblast cells were studied.The characterisation of unmodified...The antibacterial activities,cytotoxicity,and wound healing of amine(3-aminopropyltriethoxysilane (APTES))-functionalised zeolite Y against normal human fibroblast cells were studied.The characterisation of unmodified and amine-functionalised zeolites Y (Z,ZA 0.04,ZA 0.4,and ZA 0.6) by Fourier transform infrared spectroscopy,X-ray powder diffraction,and energy dispersive X-ray analysis proved that the APTES molecules were grafted onto the zeolite Y surface without distorting its framework structure.All amine-functionalised zeolite Y samples possessed antibacterial activities against several ATCC bacteria that were correlated with the increased amount of APTES on the zeolite Y surface.Conversely,when a higher concentration of APTES was grafted on the zeolite Y,higher cytotoxicity was observed against the fibroblast cells.Although the ZA 0.6 sample (zeolite Y functionalised with 0.6 M of APTES) had higher antibacterial activity,it was cytotoxic to the cells.Therefore,the selection of an antibacterial agent for human treatment purposes must also consider its cytotoxicity effect against human cells to ensure it is biocompatible.展开更多
The incorporation of various metals into the zeolite framework creates opportunities for novel applications,especially in catalysis.The recently developed assembly-disassembly-organisation-reassembly(ADOR)strategy was...The incorporation of various metals into the zeolite framework creates opportunities for novel applications,especially in catalysis.The recently developed assembly-disassembly-organisation-reassembly(ADOR)strategy was used to prepare zeolites with IPC-2(OKO)topology.The layered zeolite precursor(IPC-1P)was modified by incorporating various metals(Al,Zn,Sn,Zr,V,Fe,Hf,and Ti)using a stabilisation process.The resulting materials were characterised by X-ray powder diffraction(XRD),Ar adsorption,scanning electron microscopy(SEM),scanning transmission electron microscopy(STEM),inductively coupled plasma optical emission spectroscopy(ICP-OES),and diffuse reflectance UV-Vis spectroscopy(DR-UV-Vis).展开更多
Inorganic bioactive nanomaterials play a significant role in biomedical fields due to their excellent biocompatibility.AIEgen-functionalised mesoporous bioactive glass(FMBG)nanoparticles with sizes of 60-100 nm are pr...Inorganic bioactive nanomaterials play a significant role in biomedical fields due to their excellent biocompatibility.AIEgen-functionalised mesoporous bioactive glass(FMBG)nanoparticles with sizes of 60-100 nm are prepared by post-grafting tetraphenylethene onto bioactive glass.The obtained nanoparticles emit strong blue light at 482 nm upon UV irradiation,showing potential application in cell imaging.Furthermore,the FMBG,with a high DOX loading capacity of 250.74μg mg^(-1)and good degradability in an acid environment.展开更多
The heterofulvenoid cyclopentadithiophene-phosphaalkene is a versatile building block for opto-elec-tronic tuning with donor and acceptor moieties.Both the annulated thienyl rings and the phosphaalkene bond can be fun...The heterofulvenoid cyclopentadithiophene-phosphaalkene is a versatile building block for opto-elec-tronic tuning with donor and acceptor moieties.Both the annulated thienyl rings and the phosphaalkene bond can be functionalised using a variety of chemical transformations,e.g.forming C–C,C–E(E■Si,Br)bonds,or oxidation and metal coordination,respectively.Solid-state structures,optical and electronic properties are probed theoretically and experimentally,illustrating the opto-electronic tailoring opportu-nities at this motif.展开更多
A smart hybrid conversion coating has been developed. Modifications of coating solutions with poly-hydroxyl organic materials to reduce the usual mud cracking pattern characteristics of chromate conversion coatings (C...A smart hybrid conversion coating has been developed. Modifications of coating solutions with poly-hydroxyl organic materials to reduce the usual mud cracking pattern characteristics of chromate conversion coatings (CCCs) and improve its ability to release inhibitors to corroding sites have been achieved. The smart functionalised chromate conversion coating (SFCCC), developed on aluminium substrate has undergone laboratory checks and commercial runs under factory conditions confirmed its potency in improving corrosion resistance and paint adhesion to metal surfaces. In-service performance of the coating in the past three years is excellent.展开更多
Objective: The presence of nerve fibers in human endometrium remains unsettled but recent immunocytochemical studies have shown that there was increased innervation in the endometrium from women with endometriosis and...Objective: The presence of nerve fibers in human endometrium remains unsettled but recent immunocytochemical studies have shown that there was increased innervation in the endometrium from women with endometriosis and some nerve fibers in the normally cycling human endometrium. In the current study, we used uterine tissue cryosections from normal cycling women, which previously provided better immunocytochemical staining for lymphatic vessels than in paraffin sections. Materials and Methods: A total of 16 cases from normally cycling women were included representing menstrual, early proliferative, early to late secretary phase. Neurofilament and CD 56 were used as immunocytochemical markers for nerve fibers with cryosections. Results: There were consistent presence of nerve fibers in myometrium and basalis. Few small nerve fibers were identified in early proliferative endometrium and more nerve fibers were present in lower-half functionalis from mid-secretary phase. Late-secretary functionalis showed less nerve fibers in the upper-half than the lower-half functionalis, implying growing nerve fibers from lower functionalis to upper functionalis in late-secretary phase. Conclusion: Nerve fibers appeared to cyclically grow from basalis to lower functionalis and then from lower functionalis to upper functionalis concomitantly with blood vessels in normally cycling human endometrium. These cycling endometrial nerve fibers consisted mostly of nonmyelinated small nerve fibers, which may transmit pelvic pain in the normally cycling women.展开更多
The high hydrophilicity of pineapple leaf fibres(PALF)limits their use in cement-and gypsum-based composites exposed to moisture.This study evaluates,for the first time,the combined effect of palm kernel oil and beesw...The high hydrophilicity of pineapple leaf fibres(PALF)limits their use in cement-and gypsum-based composites exposed to moisture.This study evaluates,for the first time,the combined effect of palm kernel oil and beeswax on the hygroscopic resistance and mechanical stability of PALF.The fibres were functionalised with three formulations(oil,wax,and a 1:2 oil/wax blend)applied at different mass ratios(CR=0.5-2).Treatments increased the average bundle diameter by up to+46%(238μm)and reduced density down to 1.06 g/cm^(3).Hygroscopically,water absorption decreased from 202.4%(raw fibres)to 76.3%(CR=2),representing a maximum reduction of 59.4%in saline medium,while moisture regain dropped from 27.9%to 14.6%(−47.7%).The oil/wax blend proved most effective,simultaneously reducing water absorption(−51.2%)and moisture regain(−46.8%)at CR=1.Mechanically,the fibres retained tensile strength(415.2 vs.460.8 MPa,+11%at CR=1)and exhibited enhanced ductility(+62.5%,with elongation at break increasing from 1.6%to 2.6%),without significantly altering Young’s modulus(12.3 to 10 GPa).Water absorption kinetics were accurately described by the Czel and Mohsenin models(R^(2)>0.98).These findings clearly demonstrate that bio-based lipid coatings can provide an eco-friendly alternative to conventional chemical treatments.They improve hygroscopic resistance and preserve mechanical integrity of PALF,providing original quantitative data for their integration into durable cement-and gypsum-based composites subjected to humid or cyclic wet-dry conditions.展开更多
Because of their tissue-like mechanical performances,high biocompatibility,and adjust-able functionality,hydrogels have become increasingly attractive materials for promoting wound healing.Chronic wounds include burn,...Because of their tissue-like mechanical performances,high biocompatibility,and adjust-able functionality,hydrogels have become increasingly attractive materials for promoting wound healing.Chronic wounds include burn,diabetic,and infected wounds.Unlike common incision wounds,chronic wounds are more challenging to heal.To meet the clinical needs,multifunctional hydrogels should be fabricated and investigated.To guide future studies on the fabrication of hydrogel-based chronic wound dressings,a review of advanced multifunctional hydrogels is necessary.Various hydrogels with advanced properties,such as antibacterial,antioxidant,bioadhesive,anti-inflammatory,and wound healing properties,that can be used for skin burn wounds and diabetic wounds are summarised.Lastly,the prospects of advanced hydrogels for wound healing are elaborated.展开更多
基金supported by the National Natural Science Foundation of China(No.51962002)Guangxi Natural Science Foundation(No.2022GXNSFAA035463).
文摘In recent years,the demand for high-performance rechargeable lithium batteries has increased significantly,and many efforts have been made to boost the use of advanced electrode materials.Since graphene was first isolated by Novoselov et al.,graphene/graphene-based materials have become an active area of research and are considered to be promising high-performance electrode materials.Graphene is a two-dimensional single-atom carbon-packed material that possesses fascinating properties,including a large surface area,remarkable electrical conductivity,extraordinary intrinsic electron mobility,high Young's modulus,superior mechanical strength,optical transmittance,catalytic performance,and stability.Therefore,graphene is considered an attractive ma-terial for rechargeable lithium-ion batteries(LIBs),lithium-sulfur batteries(LSBs),and lithium-oxygen batteries(LOBs).In this comprehensive review,we emphasise the recent progress in the controllable synthesis,func-tionalisation,and role of graphene in rechargeable lithium batteries.Finally,in this review,we aim to address the most promising results,benefits,challenges,critical issues,research directions,and perspectives to explain the developmental directions of graphene for batteries.
基金supported by grants from the State Key Laboratory for Modification of Chemical Fibers and Polymer Materials,Major/key program(No.23M1060280)the Fundamental Research Funds for the Central Universities(No.2232024D-34 and No 2232023A-10).
文摘Magnesium(Mg)alloys are promising candidates for biodegradable implants and medical devices due to their biocompatibility,mechanical properties,and ability to degrade in vivo,thereby eliminating the need for secondary removal surgeries[1,2].However,their clinical adoption is hindered by rapid corrosion in physiological environments[3–5].Due to the high chemical reactivity of magnesium substrates and the inability of primary corrosion degradation products to form ideal protective layers,no effective scientific guidance has yet been identified from fundamental material science to address the rapid degradation of bare Mg[6–8].Surface modification strategies equivalently create new materials wrapped in a matrix,which can thus be extensively explored to enhance the corrosion resistance of Mg alloys while endowing them with tailored biological functionalities[9,10].
基金The Grant-Holder-Linked Bursary received from the National Research Foundation and the bursary granted by the Department of Chemical Technology to Mr. A. A
文摘Synthesised triphenylphosphine-linked multiwalled carbon nanotubes （Tpp-MWCNTs） were used to study the adsorption of nickel in aqueous solutions and their adsorption capabilities were compared with purified MWCNTs.The adsorption capacity increased with an increase in pH for all adsorbents.The adsorption equilibrium was reached in 40 and 30 min for purified MWCNTs and Tpp-MWCNTs,respectively.Both Freundlich and Langmuir isotherms used to investigate the adsorption process fitted the experimental data well with the correlation coefficient R 2 close to 1 for all adsorbents.On the other hand,the experimental data fitted well with a pseudo secondorder model.The speciation of nickel also influenced the adsorption on the purified and Tpp-MWCNTs.The adsorbents used in this study showed superior adsorption capacity when compared to other adsorbents reported in the literature.
文摘A mono-funtionalised tetraphenylporphyrin (TPP) bearing valine moiety at the phenylring was synthesized for photocytotoxicity examination in four steps, starting from regiospecificmono-nitration of TPP at the phenyl ring. The in vitro photocytotoxicitic effect against SPC-Aladenocarcinona cell line was tested.
文摘The antibacterial activities,cytotoxicity,and wound healing of amine(3-aminopropyltriethoxysilane (APTES))-functionalised zeolite Y against normal human fibroblast cells were studied.The characterisation of unmodified and amine-functionalised zeolites Y (Z,ZA 0.04,ZA 0.4,and ZA 0.6) by Fourier transform infrared spectroscopy,X-ray powder diffraction,and energy dispersive X-ray analysis proved that the APTES molecules were grafted onto the zeolite Y surface without distorting its framework structure.All amine-functionalised zeolite Y samples possessed antibacterial activities against several ATCC bacteria that were correlated with the increased amount of APTES on the zeolite Y surface.Conversely,when a higher concentration of APTES was grafted on the zeolite Y,higher cytotoxicity was observed against the fibroblast cells.Although the ZA 0.6 sample (zeolite Y functionalised with 0.6 M of APTES) had higher antibacterial activity,it was cytotoxic to the cells.Therefore,the selection of an antibacterial agent for human treatment purposes must also consider its cytotoxicity effect against human cells to ensure it is biocompatible.
基金the Czech Science Foundation for the project P106/12/G015 and together with M.M.and F.B.also OP VVV“Excellent Research Teams”,project no.CZ.02.1.01/0.0/0.0/15_003/0000417–CUCAM.
文摘The incorporation of various metals into the zeolite framework creates opportunities for novel applications,especially in catalysis.The recently developed assembly-disassembly-organisation-reassembly(ADOR)strategy was used to prepare zeolites with IPC-2(OKO)topology.The layered zeolite precursor(IPC-1P)was modified by incorporating various metals(Al,Zn,Sn,Zr,V,Fe,Hf,and Ti)using a stabilisation process.The resulting materials were characterised by X-ray powder diffraction(XRD),Ar adsorption,scanning electron microscopy(SEM),scanning transmission electron microscopy(STEM),inductively coupled plasma optical emission spectroscopy(ICP-OES),and diffuse reflectance UV-Vis spectroscopy(DR-UV-Vis).
基金supported by the State Basic Research Project of China(Grant No:2014CB931802)the National Natural Science Foundation of China(Grant No.:21320102001 and 21501063)the 111 project.
文摘Inorganic bioactive nanomaterials play a significant role in biomedical fields due to their excellent biocompatibility.AIEgen-functionalised mesoporous bioactive glass(FMBG)nanoparticles with sizes of 60-100 nm are prepared by post-grafting tetraphenylethene onto bioactive glass.The obtained nanoparticles emit strong blue light at 482 nm upon UV irradiation,showing potential application in cell imaging.Furthermore,the FMBG,with a high DOX loading capacity of 250.74μg mg^(-1)and good degradability in an acid environment.
文摘The heterofulvenoid cyclopentadithiophene-phosphaalkene is a versatile building block for opto-elec-tronic tuning with donor and acceptor moieties.Both the annulated thienyl rings and the phosphaalkene bond can be functionalised using a variety of chemical transformations,e.g.forming C–C,C–E(E■Si,Br)bonds,or oxidation and metal coordination,respectively.Solid-state structures,optical and electronic properties are probed theoretically and experimentally,illustrating the opto-electronic tailoring opportu-nities at this motif.
文摘A smart hybrid conversion coating has been developed. Modifications of coating solutions with poly-hydroxyl organic materials to reduce the usual mud cracking pattern characteristics of chromate conversion coatings (CCCs) and improve its ability to release inhibitors to corroding sites have been achieved. The smart functionalised chromate conversion coating (SFCCC), developed on aluminium substrate has undergone laboratory checks and commercial runs under factory conditions confirmed its potency in improving corrosion resistance and paint adhesion to metal surfaces. In-service performance of the coating in the past three years is excellent.
文摘Objective: The presence of nerve fibers in human endometrium remains unsettled but recent immunocytochemical studies have shown that there was increased innervation in the endometrium from women with endometriosis and some nerve fibers in the normally cycling human endometrium. In the current study, we used uterine tissue cryosections from normal cycling women, which previously provided better immunocytochemical staining for lymphatic vessels than in paraffin sections. Materials and Methods: A total of 16 cases from normally cycling women were included representing menstrual, early proliferative, early to late secretary phase. Neurofilament and CD 56 were used as immunocytochemical markers for nerve fibers with cryosections. Results: There were consistent presence of nerve fibers in myometrium and basalis. Few small nerve fibers were identified in early proliferative endometrium and more nerve fibers were present in lower-half functionalis from mid-secretary phase. Late-secretary functionalis showed less nerve fibers in the upper-half than the lower-half functionalis, implying growing nerve fibers from lower functionalis to upper functionalis in late-secretary phase. Conclusion: Nerve fibers appeared to cyclically grow from basalis to lower functionalis and then from lower functionalis to upper functionalis concomitantly with blood vessels in normally cycling human endometrium. These cycling endometrial nerve fibers consisted mostly of nonmyelinated small nerve fibers, which may transmit pelvic pain in the normally cycling women.
文摘The high hydrophilicity of pineapple leaf fibres(PALF)limits their use in cement-and gypsum-based composites exposed to moisture.This study evaluates,for the first time,the combined effect of palm kernel oil and beeswax on the hygroscopic resistance and mechanical stability of PALF.The fibres were functionalised with three formulations(oil,wax,and a 1:2 oil/wax blend)applied at different mass ratios(CR=0.5-2).Treatments increased the average bundle diameter by up to+46%(238μm)and reduced density down to 1.06 g/cm^(3).Hygroscopically,water absorption decreased from 202.4%(raw fibres)to 76.3%(CR=2),representing a maximum reduction of 59.4%in saline medium,while moisture regain dropped from 27.9%to 14.6%(−47.7%).The oil/wax blend proved most effective,simultaneously reducing water absorption(−51.2%)and moisture regain(−46.8%)at CR=1.Mechanically,the fibres retained tensile strength(415.2 vs.460.8 MPa,+11%at CR=1)and exhibited enhanced ductility(+62.5%,with elongation at break increasing from 1.6%to 2.6%),without significantly altering Young’s modulus(12.3 to 10 GPa).Water absorption kinetics were accurately described by the Czel and Mohsenin models(R^(2)>0.98).These findings clearly demonstrate that bio-based lipid coatings can provide an eco-friendly alternative to conventional chemical treatments.They improve hygroscopic resistance and preserve mechanical integrity of PALF,providing original quantitative data for their integration into durable cement-and gypsum-based composites subjected to humid or cyclic wet-dry conditions.
基金Sichuan Science and Technology Program,Grant/Award Number:2022YFS0040Guangdong Basic and Applied Basic Research Foundation,Grant/Award Number:2021B1515120019+3 种基金Fundamental Research Funds for Central Universities,Grant/Award Numbers:2682020ZT79,202241010Shenzhen Funds of the Central Government to Guide Local Scientific and Technological Development,Grant/Award Number:2021SZVUP123Excellent Young Scientist Foundation of Shandong Province,Grant/Award Number:ZR202110120029NSFC,Grant/Award Number:82072071。
文摘Because of their tissue-like mechanical performances,high biocompatibility,and adjust-able functionality,hydrogels have become increasingly attractive materials for promoting wound healing.Chronic wounds include burn,diabetic,and infected wounds.Unlike common incision wounds,chronic wounds are more challenging to heal.To meet the clinical needs,multifunctional hydrogels should be fabricated and investigated.To guide future studies on the fabrication of hydrogel-based chronic wound dressings,a review of advanced multifunctional hydrogels is necessary.Various hydrogels with advanced properties,such as antibacterial,antioxidant,bioadhesive,anti-inflammatory,and wound healing properties,that can be used for skin burn wounds and diabetic wounds are summarised.Lastly,the prospects of advanced hydrogels for wound healing are elaborated.
