Immobilization of TiO2 into Self-Supporting Photocatalytic Foam: Influence of Calcination Temperature

被引：3

作者：

Tytgat, Tom ^{[1
]}

Smits, Marianne ^{[1
]}

Lenaerts, Silvia ^{[1
]}

Verbruggen, Sammy W. ^{[1
,2
]}

机构：

[1] Univ Antwerp, Dept Biosci Engn, Res Grp Sustainable Energy & Air Purificat, B-2020 Antwerp, Belgium

[2] Katholieke Univ Leuven, Ctr Surface Chem & Catalysis, Dept Microbial & Mol Syst, B-3001 Heverlee, Belgium

来源：

INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY | 2014年 / 11卷 / 04期

关键词：

WATER-TREATMENT; MEMBRANES;

D O I：

10.1111/ijac.12086

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Immobilization of photocatalytic powder is crucial to obtain industrially relevant purification processes. To achieve this goal, self-supporting TiO2 foams were manufactured by a polyacrylamide gel process. These gels were calcined at different temperatures to study the effect of the calcination temperature on foam characteristics (rigidity, crystallinity, and porosity) and its influence on photocatalytic activity. The results show that an optimal degradation is achieved for those foams calcined between 700 and 800 degrees C. Calcination at higher temperatures results in a steep decrease in activity, explained by stability issues of the material due to formation of Na2SO4 phases and a larger rutile fraction.

引用

页码：714 / 722

页数：9

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