Study on the Photo-catalytic Properties of Nano-TiO2 Cementitious Materials

被引：0
|
作者：
Meng, Tao [1 ]
Huang, Zhenzhen [2 ]
Qian, Xiaoqian [1 ]
Zhu, Penglai [1 ]
Yue, Yachao [3 ]
机构：
[1] Zhejiang Univ, Coll Civil Engn & Architecture, Hangzhou 310058, Zhejiang, Peoples R China
[2] Zhejiang Univ, Dept Chem, Hangzhou 310027, Peoples R China
[3] Baoye Grp, Shaoxing 312030, Peoples R China
来源：
ADVANCES IN BUILDING MATERIALS, PTS 1-3 | 2011年 / 168-170卷
关键词：
nano-TiO2; cementitious; photo-catalytic; nitrogen dioxide;
D O I：
10.4028/www.scientific.net/AMR.168-170.1561
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
The photo-catalytic efficiency and durability of nano-TiO2 photo-catalytic cementitious materials for oxidizing nitrogen dioxide were investigated under simulated sunlight irradiation. The experimental results showed that the photo-catalytic efficiency increased with increase of the content of nano-TiO2. When 15wt% nano-TiO2 was added, the photo-catalytic efficiency was equal to 223% of that of standard cement. When activated carbon was used as the carrier of nano-TiO2, the photo-catalytic efficiency of cementitious nano-TiO2 could be enhanced markedly. For example, the photo-catalytic efficiency could reach to 85.7%, which was as much as 359% of that of standard cement when the contents of activated carbon and nano-TiO2 were both 10wt%. Compared with nano-TiO2 powder, the photo-catalysis durability of cementitious nano-TiO2 supported by activated carbon could be improved clearly for that activated carbon could absorb nitrogen dioxide effectively, which was favored to the photo-oxidation of nano-TiO2 on nitrogen dioxide.
引用
收藏
页码：1561 / +
页数：2
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