Enhanced Photoelectrocatalytic Activity of a Novel Bi2O3-BiPO4 Composite Electrode for the Degradation of Refractory Pollutants under Visible Light Irradiation

被引：36

作者：

Cong, Yanqing ^{[1
]}

Wang, Juan ^{[1
]}

Jin, Huan ^{[1
]}

Feng, Xiao ^{[2
]}

Wang, Qi ^{[1
]}

Ji, Yun ^{[1
]}

Zhang, Yi ^{[1
]}

机构：

[1] Zhejiang Gongshang Univ, Coll Environm Sci & Engn, Hangzhou 310018, Zhejiang, Peoples R China

[2] North China Univ Water Resources & Elect Power, Dept Environm Engn, Zhengzhou 450011, Peoples R China

来源：

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH | 2016年 / 55卷 / 05期

基金：

美国国家科学基金会;

关键词：

PHOTOCATALYTIC ACTIVITY; WATER; BIPO4; PHOTOANODE; CONVERSION; EFFICIENT; ARRAYS; FILMS; OXIDE;

D O I：

10.1021/acs.iecr.5b04591

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

A novel Bi2O3-BiPO4 composite electrode was successfully synthesized by the method of electrophoretic deposition, electrodeposition, and calcination in a proper sequence. The prepared electrodes were characterized by X-ray diffractometry (XRD) and scanning electronic microscopy (SEM). Linear sweep voltammetry (LSV) and photocurrent decay curves measurement indicated that the Bi2O3-BiPO4 composite electrode exhibited better photoelectrochemical (PEC) activity than either pure Bi2O3 or BiPO4 electrode. Incident photon to current conversion efficiency (IPCE) and electrochemical impedance spectra (EIS) measurements revealed that the composite electrode significantly improved the efficiency of charge transfer and decreased the recombination of photogenerated charges. Furthermore, the composite electrode also displayed higher efficiency and stability in the PEC degradation of organic pollutants. The p-n junction structure of the Bi2O3-BiPO4 composite electrode was most likely responsible for the enhanced PEC activity.

引用

页码：1221 / 1228

页数：8

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