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Fabrication of electrochemically-modified BiVO4-MoS2-Co3O4composite film for bisphenol A degradation.
Cong, Yanqing; Zhang, Wenhua; Ding, Wenchen; Zhang, Tongtong; Zhang, Yi; Chi, Nianping; Wang, Qi.
Afiliação
  • Cong Y; School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310018, China; Institute of Urban Aquatic Environment, Zhejiang Gongshang University, Hangzhou 310018, China.
  • Zhang W; School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310018, China.
  • Ding W; School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310018, China.
  • Zhang T; School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310018, China.
  • Zhang Y; School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310018, China; Institute of Urban Aquatic Environment, Zhejiang Gongshang University, Hangzhou 310018, China.
  • Chi N; School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310018, China.
  • Wang Q; School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310018, China; Institute of Urban Aquatic Environment, Zhejiang Gongshang University, Hangzhou 310018, China. Electronic address: wangqi8327@mail.zjgsu.edu.cn.
J Environ Sci (China) ; 102: 341-351, 2021 Apr.
Article em En | MEDLINE | ID: mdl-33637259
ABSTRACT
A new electrochemically-modified BiVO4-MoS2-Co3O4 (represented as E-BiVO4-MoS2-Co3O4) thin film electrode was successfully synthesized for environmental application. MoS2 and Co3O4 were grown on the surface of BiVO4 to obtain BiVO4-MoS2-Co3O4. E-BiVO4-MoS2-Co3O4 film was achieved by further electrochemical treatment of BiVO4-MoS2-Co3O4. The as-prepared E-BiVO4-MoS2-Co3O4 exhibited significantly enhanced photoelectrocatalytic activity. The photocurrent density of E-BiVO4-MoS2-Co3O4 thin film is 6.6 times that of BiVO4 under visible light irradiation. The degradation efficiency of E-BiVO4-MoS2-Co3O4 for bisphenol A pollutant was 81.56% in photoelectrochemical process. The pseudo-first order reaction rate constant of E-BiVO4-MoS2-Co3O4 film is 3.22 times higher than that of BiVO4. And its reaction rate constant in photoelectrocatalytic process is 14.5 times or 2 times that in photocatalytic or electrocatalytic process, respectively. The improved performance of E-BiVO4-MoS2-Co3O4 was attributed to the synergetic effects of the reduction of interfacial charge transfer resistance, the formation of oxygen vacancies and sub-stoichiometric metal oxides and higher separation efficiency of photogenerated electron-hole pairs. E-BiVO4-MoS2-Co3O4 is a promising composite material for pollutants removal.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Bismuto / Vanadatos Idioma: En Ano de publicação: 2021 Tipo de documento: Article
Texto completo
Imprimir
XML
PubMed Links
Buscar no Google

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Bismuto / Vanadatos Idioma: En Ano de publicação: 2021 Tipo de documento: Article