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In situ single iron atom doping on Bi_(2)WO_(6)monolayers triggers efficient photo-fenton reaction

Environmental Science and Ecotechnology 2024年第4期20卷 315-322页

作者： Wei Liu Peifang Wang Juan chen Xin Gao huinan che Xiaozhi Su Bin Liu Yanhui Ao Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes Ministry of EducationCollege of EnvironmentHohai UniversityNo.1Xikang RoadNanjing210098China School of chemical and Biomedical Engineering Nanyang Technological UniversitySingapore637459Singapore Shanghai Synchrotron Radiation Facility Shanghai Advanced Research InstituteChinese Academy of SciencesShanghai201204China

Developing an efficient photocatalytic system for hydrogen peroxide(H_(2)O_(2))activation in Fenton-like processes holds significant promise for advancing water purification ***,challenges such as high carrier recombination rates,limited active sites,and suboptimal H_(2)O_(2)activation efficiency impede optimal *** we show that single-iron-atom dispersed Bi_(2)WO_(6)monolayers(SIAD-BWOM),designed through a facile hydrothermal approach,can offer abundant active sites for H_(2)O_(2)*** SIAD-BWOM catalyst demonstrates superior photo-Fenton degradation capabilities,particularly for the persistent pesticide dinotefuran(DNF),showcasing its potential in addressing recalcitrant organic *** reveal that the incorporation of iron atoms in place of tungsten within the electron-rich[WO_(4)]^(2-)layers significantly facilitates electron transfer processes and boosts the Fe(II)/Fe(III)cycle *** experimental investigations and theoretical analyses further elucidate how the atomically dispersed iron induces lattice strain in the Bi_(2)WO_(6)monolayer,thereby modulating the d-band center of iron to improve H_(2)O_(2)adsorption and *** research provides a practical framework for developing advanced photo-Fenton catalysts,which can be used to treat emerging and refractory organic pollutants more effectively.

关键词： H_(2)O_(2)activation Water treatment Bismuth tungstate Photo-fenton catalysts Emerging organic pollutants

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Highly Efficient Quasi-Homogeneous System for Photocatalytic H_(2)O_(2)Production

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Chinese Journal of Structural chemistry 2022年第5期41卷 93-94页

作者： huinan che Yanhui Ao Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes Ministry of EducationCollege of EnvironmentHohai UniversityNanjing 210098China

The quasi-homogeneous photocatalytic system can be formed by iodide ions induced fragmented and ultrathin structured *** TP-PCN possesses abundant edge active sites,which can greatly enhance the O_(2)adsorption/activation capacity and the 2e-ORR *** expected,the quasi-homogeneous system affords a remarkably increased photocatalytic H_(2)O_(2)production activity.

关键词： system Highly adsorption

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S doping induces to promoted spatial separation of charge carriers on carbon nitride for efficiently photocatalytic degradation of atrazine

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Chinese Journal of Structural chemistry 2023年第12期42卷 52-59页

作者： Qiang Zhang Weiran Gong huinan che Bin Liu Yanhui Ao Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes Ministry of EducationCollege of EnvironmentHohai UniversityNo.1Xikang RoadNanjing210098China Department of Materials Science and Engineering City University of Hong KongHong Kong SAR999077China

Atrazine(ATZ),as one of the most extensively employed organochlorine-based herbicides,exhibits persistence and environmental *** technology based on polymer carbon nitride is regarded as a sus-tainable and promising approach for the degradation of emerging organic ***,the inherent shortcomings of pure carbon nitride greatly limit its practical ***,S-doped carbon nitride was elaborately constructed for efficient degradation of *** removal efficiency of ATZ by the optimal sample(0.052 min^(-1))is 3.25 times as that of pure carbon nitride(0.016 min^(-1)).Experiments and DFT calculations show that S doping optimizes electronic structure of carbon nitride,which significantly enhances the spatial separation and transfer efficiency of photogenerated electrons and ***,the reactive sites and degradation paths of ATZ were predicted by Fukui function and LC-MS *** work provides an effective approach for the design of efficient photocatalysts to achieve efficient environmental remediation.

关键词： Photocatalysis Carbon nitride Atrazine Fukui function

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Atomically Dispersed Main Group Magnesium on Cadmium Sulfide as the Active Site for Promoting Photocatalytic Hydrogen Evolution Catalysis

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Chinese Journal of Structural chemistry 2022年第1期41卷 14-18页

作者： Ran chen Juan chen huinan che Gang Zhou Yanhui Ao Bin Liu Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes Ministry of EducationCollege of EnvironmentHohai UniversityNanjing 210098China School of chemical and Biomedical Engineering Nanyang Technological UniversitySingapore 637459Singapore Division of chemistry and Biological chemistry School of Physical and Mathematical SciencesNanyang Technological University21 Nanyang LinkSingapore 637371Singapore

Photoabsorption charge separation/transfer and surface reaction are the three main factors influencing the efficiency of *** structure engineering has been extensively applied to improve the light absorption of photocatalysts,however,most of the developed photocatalysts still suffer from low photocatalytic performance due to the limited active site(s)and fast recombination of photogenerated charge *** this work,atomically dispersed main group magnesium(Mg)is introduced onto CdS monodispersed nanospheres,which greatly enhances the photocatalytic hydrogen evolution *** photocatalytic hydrogen evolution reaction rate reaches 30.6 mmol·gcatalyst^(-1)·h^(-1),which is about 11.8 and 2.5 times that of pure CdS and Pt(2 wt.%)-*** atomically dispersed Mg on CdS acts as an electron sink to trap photogenerated electrons,and at the same time,greatly reduces the Gibbs free energy of hydrogen evolution reaction(HER)and accelerates HER.

关键词： CdS hydrogen photocatalysis atomically dispersed main group metal

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Atomically Dispersed Main Group Magnesium on Cadmium Sulfide as the Active Site for Promoting Photocatalytic Hydrogen Evolution Catalysis

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结构化学 2022年第1期

作者： Ran chen Juan chen huinan che Gang Zhou Yanhui Ao Bin Liu

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