The adsorption difference of Pb^2_+ and Zn^2+ in sandstone andbreccia of Pb-Zn Mine of Yunnan Province was studied by using moderninstrument analysis method and fractal geometry theory. The resultsshow that the adsorp...The adsorption difference of Pb^2_+ and Zn^2+ in sandstone andbreccia of Pb-Zn Mine of Yunnan Province was studied by using moderninstrument analysis method and fractal geometry theory. The resultsshow that the adsorption capacity (Q) of Pb^2+ in this two rocks isbigger than that of Zn^2_+, and Q in various initial concentrationsolutions obeys Freundlich experiential formula. The value of 1/n onthe adsorption PB^2+ and Zn^2+ and Zn^2+ in sandstone hardly has anydifference, But the value of k differs observably.展开更多
Peroxymonosulfate(PMS)activation and photocatalysis are effective technologies to remove organic pollutants,but the adsorption effect of the catalyst is usually unheeded in degradation process.Herein,a bifunctional ca...Peroxymonosulfate(PMS)activation and photocatalysis are effective technologies to remove organic pollutants,but the adsorption effect of the catalyst is usually unheeded in degradation process.Herein,a bifunctional catalyst of amorphous MoS_(x)(a-MoS_(x))with 3D layer-by-layer superstructure was synthesized by assembling basic active units[Mo_(3)S_(13)]^(2-)of MoS_(2).The large interlayer spacing and high exposure of active sites render a-MoS_(x)to have excellent synergy of adsorption and photo-assisted PMS activation for tetracycline(TC)degradation.Experiments and DFT calculation show that TC can be efficiently enriched on a-MoS_(x)by pore filling,π-πinteraction,hydrogen bonding and high adsorption energy.Subsequently,PMS can be quickly activated through electron transfer with a-MoS_(x),resulting in high TC degradation efficiency of 96.6%within 20 min.In addition,the synergistic mechanism of adsorption and photo-assisted PMS activation was explored,and the degradation pathway of TC was expounded.This work is inspirational for constructing bifunctional catalysts with superior synergistic adsorption and catalytic capabilities to remove refractory organic pollutants in water.展开更多
A new di-function adsorbent(JN-3)was prepared by sulfhydryl modified.Comparing with Amberlite XAD-4 and NDA-150,the equilibrium adsorption for phenol on the JN-3 from aqueous solutions was tested,perfect adsorption ca...A new di-function adsorbent(JN-3)was prepared by sulfhydryl modified.Comparing with Amberlite XAD-4 and NDA-150,the equilibrium adsorption for phenol on the JN-3 from aqueous solutions was tested,perfect adsorption capacity was shown.Pb^(2+)can be also removed by JN-3 because of the chelate interaction between sulfhydryl groups and metal ions.This adsorbent could be used in removal of combine pollutants such as phenolic compounds and heavy metal ions from waste streams.展开更多
Molybdenum trioxide(MoO_(3))can be employed as an excellent host for intercalation due to its 2D lay-ered structure that connected by van der Waals interactions.Herein,a series of polyoxometalate-based MoO_(3) composi...Molybdenum trioxide(MoO_(3))can be employed as an excellent host for intercalation due to its 2D lay-ered structure that connected by van der Waals interactions.Herein,a series of polyoxometalate-based MoO_(3) composites(Al_(13)@MoO_(3))were successfully prepared by interpolating the Keggin-type polycationic AlO_(4)Al_(12)(OH)_(24)H_(2)O_(12)^(7+)(Al_(13))into MoO_(3)gallery.These composites can be applied to rapidly adsorb the anionic dye methyl orange(MO)through strong electrostatic interactions lead to compact and sta-ble gathering in the surrounding of the numerous charged Al_(13).Adsorption behaviors of composites with the different amount of Al_(13) were determined,these results revealed that Al_(13)-3.34%@MoO_(3)exhibited the most remarkable adsorption capacity.More importantly,the composite maintains superior adsorption capacity for five consecutive adsorption/desorption cycles,suggesting that Al_(13)@MoO_(3)can be an efficient and durable adsorbent.展开更多
The authors studied the interaction of dioxouranium （VI） UO2^2＋ and thorium Th^4＋ ions with ATP （5＇-adenosine 5＇-triphosphate） and obtained a complex of adenosine with uranium UO2^2＋ and thorium Th^4＋ ions a...The authors studied the interaction of dioxouranium （VI） UO2^2＋ and thorium Th^4＋ ions with ATP （5＇-adenosine 5＇-triphosphate） and obtained a complex of adenosine with uranium UO2^2＋ and thorium Th^4＋ ions and used X-ray method to explore these complexes.展开更多
基金the Foundation on Predictive Research of Clamber Plan, China: 95-yu-39.3-2,2.
文摘The adsorption difference of Pb^2_+ and Zn^2+ in sandstone andbreccia of Pb-Zn Mine of Yunnan Province was studied by using moderninstrument analysis method and fractal geometry theory. The resultsshow that the adsorption capacity (Q) of Pb^2+ in this two rocks isbigger than that of Zn^2_+, and Q in various initial concentrationsolutions obeys Freundlich experiential formula. The value of 1/n onthe adsorption PB^2+ and Zn^2+ and Zn^2+ in sandstone hardly has anydifference, But the value of k differs observably.
基金supported by the National Natural Science Foundation of China(Nos.52370073,12274115)Program for Science and Technology Innovation Team in Universities of Henan Province(No.24IRTSTHN017)+3 种基金Natural Science Foundation of Henan Province(No.212300410336)Program for Science and Technology Innovation Talent in Universities of Henan Province(No.23HASTIT027)Key Scientific and Technological Project of Henan Province(No.222102320188)Key Project of Science and Technology Research of Henan Provincial Department of Education(No.21A430008)。
文摘Peroxymonosulfate(PMS)activation and photocatalysis are effective technologies to remove organic pollutants,but the adsorption effect of the catalyst is usually unheeded in degradation process.Herein,a bifunctional catalyst of amorphous MoS_(x)(a-MoS_(x))with 3D layer-by-layer superstructure was synthesized by assembling basic active units[Mo_(3)S_(13)]^(2-)of MoS_(2).The large interlayer spacing and high exposure of active sites render a-MoS_(x)to have excellent synergy of adsorption and photo-assisted PMS activation for tetracycline(TC)degradation.Experiments and DFT calculation show that TC can be efficiently enriched on a-MoS_(x)by pore filling,π-πinteraction,hydrogen bonding and high adsorption energy.Subsequently,PMS can be quickly activated through electron transfer with a-MoS_(x),resulting in high TC degradation efficiency of 96.6%within 20 min.In addition,the synergistic mechanism of adsorption and photo-assisted PMS activation was explored,and the degradation pathway of TC was expounded.This work is inspirational for constructing bifunctional catalysts with superior synergistic adsorption and catalytic capabilities to remove refractory organic pollutants in water.
基金The National Natural Science Foundation of China(No.50778088).
文摘A new di-function adsorbent(JN-3)was prepared by sulfhydryl modified.Comparing with Amberlite XAD-4 and NDA-150,the equilibrium adsorption for phenol on the JN-3 from aqueous solutions was tested,perfect adsorption capacity was shown.Pb^(2+)can be also removed by JN-3 because of the chelate interaction between sulfhydryl groups and metal ions.This adsorbent could be used in removal of combine pollutants such as phenolic compounds and heavy metal ions from waste streams.
基金the National Natural Science Foundation of China(Nos.21872021,21671033,22172022 and 22071019).
文摘Molybdenum trioxide(MoO_(3))can be employed as an excellent host for intercalation due to its 2D lay-ered structure that connected by van der Waals interactions.Herein,a series of polyoxometalate-based MoO_(3) composites(Al_(13)@MoO_(3))were successfully prepared by interpolating the Keggin-type polycationic AlO_(4)Al_(12)(OH)_(24)H_(2)O_(12)^(7+)(Al_(13))into MoO_(3)gallery.These composites can be applied to rapidly adsorb the anionic dye methyl orange(MO)through strong electrostatic interactions lead to compact and sta-ble gathering in the surrounding of the numerous charged Al_(13).Adsorption behaviors of composites with the different amount of Al_(13) were determined,these results revealed that Al_(13)-3.34%@MoO_(3)exhibited the most remarkable adsorption capacity.More importantly,the composite maintains superior adsorption capacity for five consecutive adsorption/desorption cycles,suggesting that Al_(13)@MoO_(3)can be an efficient and durable adsorbent.
文摘The authors studied the interaction of dioxouranium （VI） UO2^2＋ and thorium Th^4＋ ions with ATP （5＇-adenosine 5＇-triphosphate） and obtained a complex of adenosine with uranium UO2^2＋ and thorium Th^4＋ ions and used X-ray method to explore these complexes.
