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Study on photocatalytic degradation of gaseous formaldehyde by building eco-coating
Pages: 553-
555
Year: 2005
Issue:
7
Journal: ENVIRONMENTAL POLLUTION & CONTROL
Keyword: 纳米TiO2; 光催化反应; 生态建筑涂料; 甲醛; 降解;
Abstract: 以掺加纳米TiO2制备的光催化建筑涂料为催化剂,研究了在紫外光照条件下对气态甲醛的催化降解,并探讨了纳米催化剂晶型、用量和吸附量对光催化降解甲醛的影响.实验结果表明,锐钛型纳米TiO2具有较高的光催化降解甲醛的活性,1 h甲醛的降解率可达到70%左右,产物主要为二氧化碳和水;光催化降解甲醛受到涂膜上吸附量的较大影响;该涂料对甲醛的光催化降解反应表现出一级动力学速率规律,且具有良好的线性关系.
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