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Preparation of Silver-doped Nano-Titania for Catalytical Photolysis of Organic Pollutants in Sewage
Author(s): GUO Junhuai, SHEN Xingcan, ZHENG Wenjun, CHEN Fang
Pages: 420-
423
Year: 2003
Issue:
5
Journal: CHINESE JOURNAL OF APPLIED CHEMISTRY
Keyword: 载银纳米TiO2; 光催化降解; 有机污物;
Abstract: 以TiOSO4和TiOCl2为原料,合成出锐钛相和金红石相的相对含量分别约为85%和15%的纳米TiO2光降解催化剂. 在纳米TiO2表面担载质量分数为0.5%的银后,不但能较好地提高催化活性和使用寿命,而且表现出特有的絮凝作用,使催化剂易于分离,达到多次循环使用的目的. 对光催化降解活性黑模拟污水,以及蒽醌类染料、糖厂等实际污水发现,这种纳米TiO2具有活性高、寿命较长的特点,且能多次循环使用,降低了处理污水的成本.
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