A simple route for the preparation of anatase titania-coated magnetic porous carbons with enhanced photocatalytic activity

被引：46

作者：

Ao, Yanhui ^{[1
,2
,3
]}

Xu, Jingjing ^{[1
,2
,3
]}

Fu, Degang ^{[1
,2
,3
]}

Yuan, Chunwei ^{[1
,2
]}

机构：

[1] SE Univ, Sch Chem & Chem Engn, Nanjing 210096, Peoples R China

[2] SE Univ, State Key Lab Bioelect, Nanjing 210096, Peoples R China

[3] SE Univ, Inst Res, Lab Environm & Biosafety, Suzhou 215123, Peoples R China

来源：

CARBON | 2008年 / 46卷 / 04期

基金：

中国国家自然科学基金;

关键词：

D O I：

10.1016/j.carbon.2008.01.009

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A method is described for the production of a magnetically separable photocatalyst, which consists of porous activated carbon, iron oxide particles and anatase titania particles. The prepared samples were characterized by XRD, TEM, SEM and vibrating sample magnetometry. The photocatalytic activity of the samples was determined by degrading model contaminated water, a phenol aqueous solution. The results were compared with a commercial titania, Degussa P25, and enhanced photocatalytic activities were obtained with all the samples prepared here. An additional advantage of these composite photocatalyst is their recyclability, because it can be easily magnetically separated by an external magnetic field. The degradation rate of phenol by a titania-coated magnetic activated carbon with an Fe content of 20% and a calcination temperature for the support of 450 degrees C, was still higher than 85% after the photocatalyst was used for 5 cycles. (C) 2008 Elsevier Ltd. All rights reserved.

引用

页码：596 / 603

页数：8

共 24 条

[1] Occurrence and prevention of photodissolution at the phase junction of magnetite and titanium dioxide [J].