硅藻土负载Ce-TiO2光催化材料的制备及性能研究

doi:-

东北大学学报(自然科学版) ›› 2013, Vol. 34 ›› Issue (6): 863-866.DOI: -

硅藻土负载Ce-TiO2光催化材料的制备及性能研究

陈建设，熊领领，蔡安，刘奎仁

(东北大学材料与冶金学院，辽宁沈阳110819)

收稿日期:2012-12-05 修回日期:2012-12-05 出版日期:2013-06-15 发布日期:2013-12-31
通讯作者: 陈建设
作者简介:陈建设(1969-)，男，江苏新沂人，东北大学副教授；刘奎仁(1967-)，男，辽宁锦州人，东北大学教授，博士生导师.
基金资助:
国家高技术研究发展计划项目(2012AA030314).

Preparation and Performance Research of CeTiO2/Diatomite Photocatalytic Materials

CHEN Jianshe， XIONG Lingling， CAI An， LIU Kuiren

School of Materials & Metallurgy， Northeastern University， Shenyang 110819， China.

Received:2012-12-05 Revised:2012-12-05 Online:2013-06-15 Published:2013-12-31
Contact: LIU Kuiren
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摘要/Abstract

摘要： 采用低温燃烧法制备硅藻土负载Ce-TiO2光催化材料，借助XRD，SEM对样品进行表征.以罗丹明B溶液为目标污染物，研究并确定了负载型光催化材料的最佳制备和光催化降解条件.结果表明，TiO2光催化材料的最佳煅烧温度为600℃，最佳Ce掺杂量为02%，制备的样品为锐钛矿和金红石组成的混合晶型，且锐钛矿占主要部分.最佳的光催化降解条件为:罗丹明B溶液初始质量浓度为10mg/L，催化剂用量为10g/L，溶液pH=9.制得的复合光催化材料失活再生后降解率可达93%，且可多次重复使用，光催化性能明显优于纯TiO2光催化材料.

关键词: 硅藻土, 低温燃烧法, TiO2, Ce掺杂, 光催化降解

Abstract: The CeTiO2/diatomite photocatalytic materials were prepared by lowtemperature combustion synthesis(LCS) method， which were characterized by XRD and SEM. The optimized photocatalytic preparation and degradation conditions of the supported photocatalytic materials were studied and determined， which selected Rhodamine B solution as the target pollutants. The results showed that the optimized calcination temperature was 600℃ and the optimized amount of doped Ce was 02%. The prepared samples were composed of anatase and rutile mixed polymorphs， and the anatase accounted for the major part. The optimized photocatalytic degradation conditions were Rhodamine B solution with initial concentration of 10mg/L， the amount of catalyst of 10g/L and the solution pH of 9. The degradation rate of the composite photocatalyst materials after deactivation and regeneration was 93%， and can be used repeatedly. Its photocatalytic performance was much better than that of the pure TiO2 photocatalytic material.

Key words: diatomite, LCS method, TiO2, Ce doping, photocatalytic degradation

中图分类号:

陈建设，熊领领，蔡安，刘奎仁. 硅藻土负载Ce-TiO2光催化材料的制备及性能研究[J]. 东北大学学报(自然科学版), 2013, 34(6): 863-866.

CHEN Jianshe， XIONG Lingling， CAI An， LIU Kuiren. Preparation and Performance Research of CeTiO2/Diatomite Photocatalytic Materials[J]. Journal of Northeastern University, 2013, 34(6): 863-866.

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硅藻土负载Ce-TiO2光催化材料的制备及性能研究

Preparation and Performance Research of CeTiO2/Diatomite Photocatalytic Materials

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