Exploiting efficient and recyclable photocatalysts is a vital matter for environmental purification.Herein,cerium vanadate(CeVO4)sub-microspheres and silver nanowire(AgNW)@CeVO4 with core-shell archi-tecture as photocatalysts are rationally constructed by hydrothermal approach.The AgNW@CeVO4 pho-tocatalyst obtained by depositing CeVO4 on the surface of Ag NWs possess one dimensional continuous structure,which expand the optical absorption range and reduce the band gap of CeVO4 photocatalyst.Moreover,the resultant AgNW@CeVO4 photocatalyst demonstrates superior photocatalytic performance in the degradation of rhodamine B,methylene blue,and 4-nitrophenol pollutants upon solar light irra-diation,compared with pure CeVO4.The excellent photocatalytic activity can be ascribed to the intro-duction of Ag NWs,which afford rapid charge transport channels and reservoir for the electrons in the AgNW@CeVO4 heterostructure to promote separation of electron-hole pairs.The first-principles investi-gations reveal increase of adsorption energy of oxygen molecules on the CeVO4 surface with the presence of Ag.Meanwhile,Ag NWs can further improve the photocatalytic efficiency of the AgNW@CeVO4 based on the plasmonic effect.More importantly,the good structural stability and recyclability of AgNW@CeVO4 are observed due to the strong synergistic effect,which ensures long-term usability of photocatalyst and great promise in water purification.This work can offer valuable reference into designs and construction of Ce-based heterojunction photocatalysts for environmental remediation.

Yan Song;Ran Wang;Xiuyuan Li;Baiqi Shao;Hongpeng You;Chaozheng He

Institute of Environmental and Energy Catalysis,School of Materials Science and Chemical Engineering,Xi'an Technological University,Xi'an 710021,China;State Key Laboratory of Rare Earth Resource Utilization,Changchun Institute of Applied Chemistry,Chinese Academy of Sciences,Changchun 130022,China;University of Science and Technology of China,Hefei 230026,China

中国化学快报（英文版）

[1]Yan Song;Ran Wang;Xiuyuan Li;Baiqi Shao;Hongpeng You;Chaozheng He-.Constructing a novel Ag nanowire@CeVO4 heterostructure photocatalyst for promoting charge separation and sunlight driven photodegradation of organic pollutants)[J].中国化学快报（英文版）,2022(03):1283-1287

tocatalyst

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