三峡大学学报（自然科学版）2018，Vol.40Issue(3)：102-107,6.DOI:10.13393/j.cnki.issn.1672-948X.2018.03.022
新型Ag-BiVO4电极的光电催化性能研究
Study of Photoelectron Catalysis Properties of Ag Doped BiVO4 Electrode
摘要
Abstract
Ag-BiVO4 film electrode is prepared using vanadyl triisopropoxide(C9H24O4V)by metal deposition method.The structures and properties of Ag-BiVO4 electrode are characterized by scanning electron microsco-py (SEM),X-ray diffraction (XRD),X-ray photoelectron spectroscopy (XPS)and cyclic voltammetry (CV). Under ultraviolet (λ≤390nm)irradiation,the photoelectron-catalytic degradation of rhodamine B (RHB) with high concentration using Ag-BiVO4 anode is examined.The photoelectron-catalytic properties of toxic or-ganic pollutants are studied.Compared with photocatalytic or electrocatalytic process,photoelectrocatalytic activity of Ag-BiVO4 is significantly promoted,which results from the availability of photo-generated elec-trons transferring,and the recombination and photo-generated is hindered due to the generation of Ag parti-cles.Additionally,the influence of electrode coating amount,Ag loading amount and voltage change on the experiment is also studied.The optimum conditions are as follows:Amount of BiVO4 coated is 4×10-6mol/cm2;loading Ag is 4×10-6mol/cm2;the experimental voltage is 2.5V,where the RhB degradation rate can reach 64.6 % at 3 h.关键词
BiVO4/Ag掺杂/光电催化/降解Key words
BiVO4/Ag doping/photoelectric catalysis/degradation分类
化学化工引用本文复制引用
周奥,任智勇,黄应平,方艳芬..新型Ag-BiVO4电极的光电催化性能研究[J].三峡大学学报（自然科学版）,2018,40(3):102-107,6.基金项目
国家自然科学基金(201577078,201677086) （201577078,201677086）
湖北省创新群体滚动项目(2015CFA021) （2015CFA021）
