Preparation and performance research of Ce-TiO2/KL ball photocatalysts

The Ce-TiO2/KL （diatomite） ball photocatalyst was prepared and characterized based on the pretreated diatomite. The resuits showed that comparing with the crude diatomite, proper pretreatment could significantly improve its SiO2 purity and specific surface area. The surface of diatomite was clear wi...

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Bibliographic Details
Published in:Journal of rare earths 2014-09, Vol.32 (9), p.849-854
Main Author: 于晓娟 熊领领 马国平 梁愿 刘奎仁
Format: Article
Language:English
Subjects:
Ce doping
diatomite
photocatalytic degradation
premolding
pretreatment
rare earths
titanium dioxide
二氧化硅
催化剂制备
光催化剂
光催化性能
比表面积
硅藻土
纳米TiO2
铈
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Summary:The Ce-TiO2/KL （diatomite） ball photocatalyst was prepared and characterized based on the pretreated diatomite. The resuits showed that comparing with the crude diatomite, proper pretreatment could significantly improve its SiO2 purity and specific surface area. The surface of diatomite was clear with uniform pore structure and big pore size. With diatomite ball as carder, the supported Ce-TiO2/KL ball photocatalyst was prepared by sol-gel method. The photocatalytic performances of the supported Ce-TiO2/ KL ball and Ce-TiO2/KL powder photocatalysts under various preparation conditions were studied in view of photocatalytic degrada- tion rate of Rhodamine B （Rh B） solution. The degradation rate of the ball photocatalysts for Rh B reached 94.6% and could be reused for many times, which showed much better photocatalytic performance and stability than powder photocatalysts.
ISSN:1002-0721
2509-4963
DOI:10.1016/S1002-0721(14)60152-6