Cu2O/BiVO4 heterostructures: Synthesis and application in simultaneous photocatalytic oxidation of organic dyes and reduction of Cr(VI) under visible light

Qing Yuan; Lang Chen; Miao Xiong; Jie He; Sheng Lian Luo; Chak Tong Au; Shuang Feng Yin

doi:10.1016/j.cej.2014.06.031

Cu₂O/BiVO₄ heterostructures: Synthesis and application in simultaneous photocatalytic oxidation of organic dyes and reduction of Cr(VI) under visible light

Qing Yuan
, Lang Chen
, Miao Xiong
, Jie He
, Sheng Lian Luo
, Chak Tong Au
, Shuang Feng Yin^*

^*Corresponding author for this work

Department of Chemistry

Research output: Contribution to journal › Journal article › peer-review

350 Citations (Scopus)

Abstract

We synthesized Cu₂O/BiVO₄ composites by growing Cu₂O nanoparticles on BiVO₄ under mild condition. The optimized composite shows high photocatalytic efficiency in the simultaneous oxidation of organic dyes and reduction of Cr(VI) in neutral media. The XPS results confirm that the Cr(VI) adsorbed on Cu₂O/BiVO₄ was completely reduced to Cr(III). The photocatalyst can be used for the degradation of cationic or anionic dyes as well as a mixture of them under visible light irradiation. The photocatalytic activity of the composite can be ascribed to the heterojunctions between Cu₂O and BiVO₄, which facilitate the separation of photogenerated electrons and holes. The work demonstrates that the as-synthesized Cu₂O/BiVO₄ composite is a promising photocatalyst for the treatment of wastewater that contains organic dyes and Cr(VI) ions.

Original language	English
Pages (from-to)	394-402
Number of pages	9
Journal	Chemical Engineering Journal
Volume	255
DOIs	https://doi.org/10.1016/j.cej.2014.06.031
Publication status	Published - 1 Nov 2014

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 6 Clean Water and Sanitation

User-Defined Keywords

Bismuth vanadate
Cr(VI)
Cuprous oxide
Heterojunction
Photocatalysis

Access to Document

10.1016/j.cej.2014.06.031

Cite this

@article{de69177f8ff842558f935ac95c339d6d,

title = "Cu2O/BiVO4 heterostructures: Synthesis and application in simultaneous photocatalytic oxidation of organic dyes and reduction of Cr(VI) under visible light",

abstract = "We synthesized Cu2O/BiVO4 composites by growing Cu2O nanoparticles on BiVO4 under mild condition. The optimized composite shows high photocatalytic efficiency in the simultaneous oxidation of organic dyes and reduction of Cr(VI) in neutral media. The XPS results confirm that the Cr(VI) adsorbed on Cu2O/BiVO4 was completely reduced to Cr(III). The photocatalyst can be used for the degradation of cationic or anionic dyes as well as a mixture of them under visible light irradiation. The photocatalytic activity of the composite can be ascribed to the heterojunctions between Cu2O and BiVO4, which facilitate the separation of photogenerated electrons and holes. The work demonstrates that the as-synthesized Cu2O/BiVO4 composite is a promising photocatalyst for the treatment of wastewater that contains organic dyes and Cr(VI) ions.",

keywords = "Bismuth vanadate, Cr(VI), Cuprous oxide, Heterojunction, Photocatalysis",

author = "Qing Yuan and Lang Chen and Miao Xiong and Jie He and Luo, \{Sheng Lian\} and Au, \{Chak Tong\} and Yin, \{Shuang Feng\}",

note = "This project was financially supported by NSFC (Grant Nos. U1162109, 21273067 and J1210040), Program for Changjiang Scholars and Innovative Research Team in University (IRT1238), and the Fundamental Research Funds for the Central Universities. C.T. Au thanks the HNU for an adjunct professorship.",

year = "2014",

month = nov,

day = "1",

doi = "10.1016/j.cej.2014.06.031",

language = "English",

volume = "255",

pages = "394--402",

journal = "Chemical Engineering Journal",

issn = "1385-8947",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Cu2O/BiVO4 heterostructures

T2 - Synthesis and application in simultaneous photocatalytic oxidation of organic dyes and reduction of Cr(VI) under visible light

AU - Yuan, Qing

AU - Chen, Lang

AU - Xiong, Miao

AU - He, Jie

AU - Luo, Sheng Lian

AU - Au, Chak Tong

AU - Yin, Shuang Feng

N1 - This project was financially supported by NSFC (Grant Nos. U1162109, 21273067 and J1210040), Program for Changjiang Scholars and Innovative Research Team in University (IRT1238), and the Fundamental Research Funds for the Central Universities. C.T. Au thanks the HNU for an adjunct professorship.

PY - 2014/11/1

Y1 - 2014/11/1

N2 - We synthesized Cu2O/BiVO4 composites by growing Cu2O nanoparticles on BiVO4 under mild condition. The optimized composite shows high photocatalytic efficiency in the simultaneous oxidation of organic dyes and reduction of Cr(VI) in neutral media. The XPS results confirm that the Cr(VI) adsorbed on Cu2O/BiVO4 was completely reduced to Cr(III). The photocatalyst can be used for the degradation of cationic or anionic dyes as well as a mixture of them under visible light irradiation. The photocatalytic activity of the composite can be ascribed to the heterojunctions between Cu2O and BiVO4, which facilitate the separation of photogenerated electrons and holes. The work demonstrates that the as-synthesized Cu2O/BiVO4 composite is a promising photocatalyst for the treatment of wastewater that contains organic dyes and Cr(VI) ions.

AB - We synthesized Cu2O/BiVO4 composites by growing Cu2O nanoparticles on BiVO4 under mild condition. The optimized composite shows high photocatalytic efficiency in the simultaneous oxidation of organic dyes and reduction of Cr(VI) in neutral media. The XPS results confirm that the Cr(VI) adsorbed on Cu2O/BiVO4 was completely reduced to Cr(III). The photocatalyst can be used for the degradation of cationic or anionic dyes as well as a mixture of them under visible light irradiation. The photocatalytic activity of the composite can be ascribed to the heterojunctions between Cu2O and BiVO4, which facilitate the separation of photogenerated electrons and holes. The work demonstrates that the as-synthesized Cu2O/BiVO4 composite is a promising photocatalyst for the treatment of wastewater that contains organic dyes and Cr(VI) ions.

KW - Bismuth vanadate

KW - Cr(VI)

KW - Cuprous oxide

KW - Heterojunction

KW - Photocatalysis

UR - https://www.scopus.com/pages/publications/84904042158

U2 - 10.1016/j.cej.2014.06.031

DO - 10.1016/j.cej.2014.06.031

M3 - Journal article

AN - SCOPUS:84904042158

SN - 1385-8947

VL - 255

SP - 394

EP - 402

JO - Chemical Engineering Journal

JF - Chemical Engineering Journal

ER -