Study of the Structure and Photocatalytic Activity of the TiO2 Prepared from the Treatment of NTA in CO

doi:10.7517/j.issn.1674-0475.2009.02.141

Abstract

Abstract: The structure and photocatalytic activity of the TiO₂ prepared from the treatment of nanotubed titanic acid (NTA) in CO was investigated.The results showed that when NTA was treated in CO at high temperature,the carbon doping in product TiO₂ did not appear,only carbon deposition on TiO₂ appeared;the BET areas of the products decreased markedly with the increase of treating temperature;The transformation temperature from anatase to rutile for TiO₂ obtained by CO treatment was much lower than thatobtained by air treatment.The TiO₂ obtained by CO treatment of NTA were inert in photocatalytic activity under visible-light irradiation,but active under UV-light irradiation,while the UV light photocatalytic activity decreased with the increase of the treating temperature in CO atmosphere.

Key words: CO, nanotubed titanic acid (NTA), photocatalysis, carbon deposition, crystalline form change

CLC Number:

O621

WANG Jing-ju, WANG Xiao-dong, WU Zhi-shen, JIN Zhen-sheng. Study of the Structure and Photocatalytic Activity of the TiO₂ Prepared from the Treatment of NTA in CO[J]. Imaging Science and Photochemistry, 2009, 27(2): 141-148.

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Study of the Structure and Photocatalytic Activity of the TiO₂ Prepared from the Treatment of NTA in CO

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