Mechanism of 2,4-dinitrophenol photocatalytic degradation by ζ-Bi2O3/Bi2MoO6 composites under solar and visible light irradiation

被引：64
作者：
Ma, Jun [1 ]
Zhang, Long-Zhu [1 ]
Wang, Yue-Hua [1 ]
Lei, Si-Liang [1 ]
Luo, Xu-Biao [1 ]
Chen, Su-Hua [1 ]
Zeng, Gui-Sheng [1 ]
Zou, Jian-Ping [1 ]
Luo, Sheng-Lian [1 ]
Au, Chak-Tong [1 ,2 ]
机构：
[1] Nanchang Hangkong Univ, Key Lab Jiangxi Prov Persistent Pollutants Contro, Nanchang 330063, Jiangxi, Peoples R China
[2] Hong Kong Baptist Univ, Dept Chem, Kowloon, Hong Kong, Peoples R China
来源：
CHEMICAL ENGINEERING JOURNAL | 2014年 / 251卷
关键词：
Photocatalyst; Degradation; Persistent organic pollutants; Radicals; OXIDATION; FENTON; TIO2; CATALYST; BI2WO6; PHOTODEGRADATION; HETEROSTRUCTURE; NITROPHENOLS; ELECTRODE; NANOPLATE;
D O I：
10.1016/j.cej.2014.04.085
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
The zeta-Bi2O3/Bi2MoO6 composites were synthesized by a one-pot template-free hydrothermal method, and were systematically characterized by powder X-ray diffraction, X-ray photoelectron spectroscopy, scanning electron microscopy, transmission electron microscopy, UV-vis diffuse reflectance spectroscopy, and Raman spectroscopy. Based on the results of 2,4-dinitrophenol (2,4-DNP) degradation under simulated solar or visible light irradiation over the as-prepared materials, it is found that photocatalytic efficiency is closely related to the compositions of the materials, and the 20%zeta-Bi2O3/Bi2MoO6 catalyst performs the best. With the addition of H2O2 (5.0 mmol/L), there is marked improvement of photocatalytic activity. Related mechanisms for the photocatalytic degradation of 2,4-DNP and photocatalytic enhancement of the zeta-Bi2O3/Bi2MoO6 composites have been put forward. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码：371 / 380
页数：10
相关论文
共 53 条
[1]   FORMATION OF AN OXYCHLORIDE OVERLAYER AT A BI(0001) SURFACE [J].
AFSIN, B ;
ROBERTS, MW .
SPECTROSCOPY LETTERS, 1994, 27 (01) :139-146
[2]   Preparation and characterization of bismuth tungstate polycrystalline flake-ball particles for photocatalytic reactions [J].
Amano, Fumiaki ;
Nogami, Kohei ;
Abe, Ryu ;
Ohtani, Bunsho .
JOURNAL OF PHYSICAL CHEMISTRY C, 2008, 112 (25) :9320-9326
[3]   The simple, template free synthesis of a Bi2S3-ZnO heterostructure and its superior photocatalytic activity under UV-A light [J].
Balachandran, Subramanian ;
Swaminathan, Meenakshisundaram .
DALTON TRANSACTIONS, 2013, 42 (15) :5338-5347
[4]   Facile Fabrication of Heterostructured Bi2O3-ZnO Photocatalyst and Its Enhanced Photocatalytic Activity [J].
Balachandran, Subramanian ;
Swaminathan, Meenakshisundram .
JOURNAL OF PHYSICAL CHEMISTRY C, 2012, 116 (50) :26306-26312
[5]   THE STRUCTURAL-PROPERTIES OF THE OXYGEN CONDUCTING DELTA-PHASE OF BI2O3 [J].
BATTLE, PD ;
CATLOW, CRA ;
DRENNAN, J ;
MURRAY, AD .
JOURNAL OF PHYSICS C-SOLID STATE PHYSICS, 1983, 16 (17) :L561-L566
[6]   A mechanism of photocatalytic and adsorptive treatment of 2,4-dinitrophenol on a porous thin film of TiO2 covering granular activated carbon particles [J].
Cao, Xiangyu ;
Shiraishi, Fumihide .
CHEMICAL ENGINEERING JOURNAL, 2010, 160 (02) :651-659
[7]   Photocatalytic and adsorptive treatment of 2,4-dinitrophenol using a TiO2 film covering activated carbon surface [J].
Cao, Xiangyu ;
Oda, Yasuhiro ;
Shiraishi, Fumihide .
CHEMICAL ENGINEERING JOURNAL, 2010, 156 (01) :98-105
[8]   Porous peanut-like Bi2O3-BiVO4 composites with heterojunctions: one-step synthesis and their photocatalytic properties [J].
Chen, Lang ;
Zhang, Qiang ;
Huang, Rui ;
Yin, Shuang-Feng ;
Luo, Sheng-Lian ;
Au, Chak-Tong .
DALTON TRANSACTIONS, 2012, 41 (31) :9513-9518
[9]   Photocatalytic Degradation Efficiency and Mechanism of Microcystin-RR by Mesoporous Bi2WO6 under Near Ultraviolet Light [J].
Chen, Peng ;
Zhu, Lingyan ;
Fang, Shuhong ;
Wang, Chunying ;
Shan, Guoqiang .
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 2012, 46 (04) :2345-2351
[10]   X-RAY PHOTOELECTRON-SPECTRA AND ELECTRONIC-STRUCTURE OF BI2X3 (X=O,S,SE,TE) [J].
DEBIES, TP ;
RABALAIS, JW .
CHEMICAL PHYSICS, 1977, 20 (02) :277-283
123456