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

Tao Meng; Zhen Zhen Huang; Xiao Qian Qian; Peng Lai Zhu; Ya Chao Yu

doi:10.4028/www.scientific.net/AMR.168-170.1561

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 168-170Study on the Photo-Catalytic Properties of...

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

Abstract:

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.

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Periodical:

Advanced Materials Research (Volumes 168-170)

Pages:

1561-1565

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.168-170.1561

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Online since:

December 2010

Authors:

Tao Meng, Zhen Zhen Huang, Xiao Qian Qian, Peng Lai Zhu, Ya Chao Yu

Keywords:

Cementitious, Nano-TiO₂, Nitrogen Dioxide, Photo Catalytic

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