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Synthesis of Z-scheme g-C3N4 nanosheets/Ag3PO4 photocatalysts with enhanced visible-light photocatalytic performance for the degradation of tetracycline and dye

查看全文 作　　者：Meng [1]Ding;Juanjuan [1,2]Zhou;Hongcen [1]Yang;Ruya [1]Cao;Shouwei [1]Zhang;Minghui [1]Shao;Xijin [1]Xu 高影响力作者 机构地区：[1]School of Physics and Technology,University of Jinan,Ji'nan 250022,China;[2]College of Optical and Electronic Technology,China Jiliang University,Hangzhou 310018,China高影响力机构 出　　处：《Chinese Chemical Letters》索引2020年第31卷第1期,共6页高影响力期刊 基　　金：financially supported by the National Natural Science Foundation of China (Nos. 61504048, 51672109, 21707043);Natural Science Foundation of Shandong Province for Excellent Young Scholars (Nos. ZR2016JL015, ZR2017BEE005) 摘　　要：Graphene-like C3N4/Ag3PO4 photocatalysts are synthesized by calcination and solutions precipitating method.The obtained g-C3N4/Ag3PO4 composites display excellent photocatalytic activity for the degradation of methylene orange(MO),rhodamine B(RhB)and tetracycline(TC)under visible light irradiation.The solutions containing RhB(10 mg/L)and MO(10 mg/L)can be efficiently degraded within15 min and 30 min.Especially,nearly 80%of TC(50 mg/L)is degraded within 20 min.which are much better than those of pure g-C3N4 nanosheets and Ag3PO4,implying that strong interaction and reasonable energy band alignment in the contact interface can effectively transfer the carries.Furthermore,the g-C3N4/Ag3PO4 composites exhibit the improved stability,and only a slight decrease is observed after three recycling runs.Moreover,the impact of inorganic ions and PH values on the degradation performance is rather small.The Z-scheme photocatalytic mechanism of the g-C3N4/Ag3PO4 composites based on the active species trapping experimental is proposed.This work demonstrates the promising applications of the g-C3N4/Ag3PO4 composites in environmental issues. 关 键 词：g-C3N4/Ag3PO4 TETRACYCLINE Photocatalytic activity PHOTOCURRENT Impedance
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