|本期目录/Table of Contents|

[1]黄徽,王超,杨平.Bi掺杂介孔CeO2的制备及其可见光催化性能[J].南京工业大学学报(自然科学版),2013,35(06):103-108.[doi:10.3969/j.issn.1671-7627.2013.06.021]
 HUANG Hui,WANG Chao,YANG Ping.Preparation of Bi-doped mesoporous cerium oxide with highly photocatalytic performance under visible light irradiation[J].Journal of NANJING TECH UNIVERSITY(NATURAL SCIENCE EDITION),2013,35(06):103-108.[doi:10.3969/j.issn.1671-7627.2013.06.021]
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Bi掺杂介孔CeO2的制备及其可见光催化性能()
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《南京工业大学学报(自然科学版)》[ISSN:1671-7627/CN:32-1670/N]

卷:
35
期数:
2013年06期
页码:
103-108
栏目:
出版日期:
2013-11-20

文章信息/Info

Title:
Preparation of Bi-doped mesoporous cerium oxide with highly photocatalytic performance under visible light irradiation
文章编号:
1671-7627(2013)06-0103-06
作者:
黄徽12王超2杨平1
1. 苏州大学 材料与化学化工学部,江苏 苏州 215123; 2.南通职业大学 化学与生物工程学院,江苏 南通 226000
Author(s):
HUANG Hui12WANG Chao2YANG Ping1
1. College of Chemistry,Chemical Engineering and Materials Science,Soochow University,Suzhou 215123,China; 2. School of Chemical and Biological Engineering,Nantong Vocational College,Nantong 226000,China
关键词:
介孔CeO2 Bi掺杂 光催化 对氯苯酚 可见光
Keywords:
mesoporous cerium dioxide Bi-doped photocatalysis 4-chlorophenol visible light
分类号:
TQ028.8
DOI:
10.3969/j.issn.1671-7627.2013.06.021
文献标志码:
A
摘要:
以Ce(NO3)4为Ce源,介孔SiO2(KIT-6)为模板,采用硬模板法制备介孔CeO2(m-CeO2)。通过浸渍法合成Bi掺杂m-CeO2(m-CeO2/Bi)光催化剂。利用N2吸附-脱附、X线衍射仪(XRD)、透射电子显微镜(TEM)等手段对样品的物理化学特性进行表征。在可见光(λ>420 nm)条件下,以对氯苯酚(4-CP)为目标污染物,考察m-CeO2/Bi光催化剂的催化性能。结果表明:m-CeO2/Bi光催化剂具有完整的晶型和规则的孔道结构,有利于光生电子和空穴的分离,同时Bi的掺入降低了催化剂的带隙能,有效提高了可见光催化性能。2%Bi掺杂的m-CeO2/Bi光催化剂性能最佳,光照4 h可将4-CP降解91%以上,催化剂经多次循环使用后,其光催化活性基本保持不变。
Abstract:
Mesoporous cerium oxides were prepared by a hard templating method using mesoporous silica dioxide(KIT-6)as the hard template,cerium nitrate as the source of cerium.The m-CeO2/Bi photocatalysts were synthysized by the wet impregnation method.The samples were characterized by N2 adsorption-desorption isothermal analysis,X-ray diffraction(XRD)and transmission electron microscopy(TEM).The photodegradation activity of m-CeO2/Bi powders was evaluated by using 4-chlorophenol(4-CP)as pollutant targets under visible light irradiation(λ>420 nm).Results demonstrated that the m-CeO2/Bi photocatalyst equipped with high crystallinity and continuous pore channels,which benefited for the electron-hole pairs separation,doped Bi could reduce the bandgap of the m-CeO2 photocatalyst,thus effectively improving the visible light photocatalytic properties.The photodegradation yield of 4-CP was beyond 91% under visible light irradiation for 4 h.The photocatalyst could be recycled by several times and without losing its photocatalytic activity.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2013-09-04
基金项目:国家自然科学基金(21243009); 江苏省自然科学基金(BK2010209); 2012年江苏省青蓝工程
作者简介:黄徽(1967—),男,江苏南通人,副教授,博士,主要研究方向为纳米催化剂与工业催化; 杨平(联系人),教授,E-mail:pyang@suda.edu.cn..
更新日期/Last Update: 2013-11-30