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0d/1d AgI/MoO_(3)Z-scheme heterojunction photocatalyst:Highly efficient visible-light-driven photocatalyst for sulfamethoxazole degradation

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Chinese Chemical Letters 2021年第10期32卷 3226-3230页

作者： Jing Xu Juan Chen Yanhui Ao Peifang Wang Key Laboratory of Integrated Regulation and Resource development on Shallow Lakes of Ministry of Education College of EnvironmentHohai UniversityNanjing 210098China

Low dimension nano photocatalysts show great potential in the field of treating contaminated water for their large surface area and size *** this study,a 0 d/1 d AgI/MoO_(3)Z-scheme photocatalyst with striking photocatalytic performance was constructed *** one-dimensional MoO_(3)nanobelts were prepared by a simple hydrothermal method,and then it was modified by AgI nanoparticles in a handy deposition *** choosing sulfamethoxazole(SMZ)as the target contaminant,the rate constant value of the optimal 0 d/1 d AgI/MoO_(3)composite could hit up to 0.13 min^(-1),which is nearly 22.4 times and 32.5 times as that of pure MoO_(3)(0.0058 min^(-1))and AgI(0.0040 min^(-1)),respectively.A series of detailed characterizations give evidences that the charge transfer in the composite followed Z scheme ***,efficient separation/transfer and the remained high redox activity of photogenerated carriers played a vital role in the sharply enhanced photocatalytic *** possible degradation pathways of SMZ were proposed based on the intermediates detected by high-performance liquid chromatography-mass spectrometry(HPLC-MS).Meanwhile,the magnificent cyclic stability makes the material a promising material in the practical application.

关键词： MoO_(3)-based-photocatalyst 0d/1d Z-scheme Sulfamethoxazole Visible-light-responsive

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Constructing 0d/1d Ag3PO4/TiO_(2) S-scheme heterojunction for efficient photodegradation and oxygen evolution

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Chinese Journal of Catalysis 2022年第10期43卷 2558-2568页

作者： Yukun Zhu Yan Zhuang Lele Wang Hua Tang Xianfeng Meng Xilin She School of Environmental Science and Engineering Qingdao UniversityQingdao 266071ShandongChina School of Materials Science&Engineering Jiangsu UniversityZhenjiang 212013JiangsuChina

An S-scheme heterojunction photocatalyst is capable of boosting photogenerated carrier separation and transfer,thus maintaining high photooxidation and photoredox ***,a 0d Ag_(3)PO_(4) nanoparticles(NPs)/1d TiO_(2) nanofibers(NFs)S-scheme heterojunction with intimate interfacial contact was designed via the the hydro-thermal *** from the abundant hydroxyl groups and size confinement effect of TiO_(2) NFs,the average diameter of the Ag_(3)PO_(4) nanoparticles decreased from 100 to 22 nm,which favored the construction of a 0d/1d geometry *** multifunctional Ag_(3)PO_(4)/TiO_(2) sample exhibited excellent photocatalytic activity and stability in photocatalytic oxygen production(726μmol/g/h)and photocatalytic degradation of various organic contaminants such as rhodamine B(100%),phenol(60%)and tetracycline hydrochloride(100%).The significant improvements in the photocatalytic performance and stability can be attributed to the intimate interfacial contacts and rich active sites of 0d/1d geometry,fast charge carrier migration,and outstanding photoredox properties induced by the S-scheme charge-transfer *** work offers a promising strategy for constructing 0d/1d S-scheme heterojunction photocatalysts for improved photocatalytic performance.

关键词： S-Scheme heterojunction 0d/1d Ag_(3)PO_(4)/TiO_(2) Oxygen production Photocatalytic degradation

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