中国科学院化学研究所机构知识库
Advanced  
ICCAS OpenIR  > 光化学实验室  > 期刊论文
题名: Rapid photocatalytic debromination on TiO2 with in-situ formed copper co-catalyst: Enhanced adsorption and visible light activity
作者: Lv, Yanhui1; Cao, Xiaofeng1; Jiang, Haiying1; Song, Wenjing1; Chen, Chuncheng1; Zhao, Jincai1
关键词: Copper nanoparticles ; TiO2 ; Photocatalytic debromination ; Visible light ; Cocatalyst
刊名: APPLIED CATALYSIS B-ENVIRONMENTAL
发表日期: 2016-10-05
卷: 194, 页:150-156
收录类别: SCI
英文摘要: The cheap metal Cu particles in-situ loaded on TiO2 surface is able to co-catalyze the photocatalytic debromination of polybrominated pollutants. Over 15 times of enhancement for the reductive debromination of deca-brominated diphenyl ether (BDE209) over Cu/TiO2 is achieved, relative to that on the bare TiO2. Moreover, the presence of metal copper markedly changes the distribution of the formed intermediates, indicating the change in the debromination mechanism because of the co-catalysis of metal Cu. The detailed ex-situ and in-situ characterizations of the Cu/TiO2 photocatalyst indicate that the copper remains its Cu valence state in photocatalytic turnover. The mechanistic investigation suggests that the presence of metal copper nanoparticles greatly enhance the adsorption of hydrophobic BDE209 on the photocatalyst, which facilitates the electron transfer from the conduction band of TiO2 to the pollutants. Our experimental results also implies that the interaction of BDE209 with metal copper co-catalyst would position-specifically activate the C-Br bonds during the dissociative electron transfer. We further show that the surface plasmon resonance of metal copper can contribute to the enhancement of photocatalytic activity by utilizing the visible-light part of the irradiation. The present study provides a simple and economic method for elimination of organobromide pollutants, and would be promising in reductive dehalogenation by other techniques. (C) 2016 Elsevier B.V. All rights reserved.
语种: 英语
内容类型: 期刊论文
URI标识: http://ir.iccas.ac.cn/handle/121111/35754
Appears in Collections:光化学实验室_期刊论文

Files in This Item:

There are no files associated with this item.


作者单位: 1.Chinese Acad Sci, Beijing Natl Lab Mol Sci, Key Lab Photochem, Inst Chem, Beijing 100190, Peoples R China
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Lv, Yanhui]'s Articles
[Cao, Xiaofeng]'s Articles
[Jiang, Haiying]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Lv, Yanhui]‘s Articles
[Cao, Xiaofeng]‘s Articles
[Jiang, Haiying]‘s Articles
Related Copyright Policies
Null
Social Bookmarking
Add to CiteULike Add to Connotea Add to Del.icio.us Add to Digg Add to Reddit
所有评论 (0)
暂无评论
 
评注功能仅针对注册用户开放,请您登录
您对该条目有什么异议,请填写以下表单,管理员会尽快联系您。
内 容:
Email:  *
单位:
验证码:   刷新
您在IR的使用过程中有什么好的想法或者建议可以反馈给我们。
标 题:
 *
内 容:
Email:  *
验证码:   刷新

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.

 

 

Valid XHTML 1.0!
Copyright © 2007-2017  中国科学院化学研究所 - Feedback
Powered by CSpace