Citation: SHEN Shui-Fa, CHANG Min-Jie, CHE Rong-Feng, PAN Hai-Bo, CHEN Nai-Sheng. Preparation of Bi-crystalline (Monocline and Anatase) TiO2/MWNTs Composite and Its Photocatalytic Activity under Visible Light Irradiation[J]. Chinese Journal of Inorganic Chemistry, ;2013, 29(11): 2327-2332. doi: 10.3969/j.issn.1001-4861.2013.00.369
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Abi-crystalline (monocline and anatase) titanium dioxide/multi-walled carbon nanotubes (TiO2/MWNTs) composite was prepared through the hydrothermal reaction of tetrabutyl titanate and sodium hydroxide with butyl end-capped fatty alcohol ethoxylates as phase regulator, and its photocatalytic property under visible light irradiation was investigated. The results show: the adding of MWNTs can affect crystalline phase and improve the photocatalytic activity of TiO2, the product with 5% MWNTs exhibits the greatest photocatalytic degradation rate;the photocatalytic activity of the products greatly increases with the increase of calcination temperature. The effect of doping MWNTs originates from (1) facilitating the formation of bi-crystalline phase with monocline and anatase, and (2) excellent conductivity of MWNTs, or (3) the carbon doping effect rooting in the breaking down of MWNTs under higher temperature.
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