Hydrothermal synthesis and evaluation of visible-light-active photocatalyst of (N, F)-codoped anatase TiO_2 from an F-containing titanium chemical

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概要

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• A visible light active TiO_2 photocatalyst was synthesized hydrothermally from an aqueous solution containing (NH_4)_2TiF_6 and NH_3 at 140 or 160℃. The prepared samples were characterized with X-ray diffraction (XRD), field-emission scanning electron microscopy (FE-SEM), and UV-Vis diffuse reflectance spectroscopy. The prepared samples showed obvious absorption in the wavelength range of 400-550 nm with a red shift in the adsorption edge. It was found that the prepared samples exhibited photocatalytic activity on degradation of methylene blue (MB) in water under visible light. The ion-doped TiC_2 obtained by hydrothermal treatment at 160℃ for 7 d had the highest photocatalytic activity. The formation of Ti-N and Ti-F bonds was confirmed by X-ray photoelectron spectroscopy (XPS).

• 社団法人日本セラミックス協会の論文
• 2008-05-01

著者

• Yamada Tomoaki

  Musashi Institute Of Technology

• Gao Yanfeng

  Shanghai Institute Of Ceramics Chinese Academy Of Sciences

• Gao Yanfeng

  Shanghai Institute Of Ceramics (sic) Chinese Academy Of Sciences (cas)

• NAGAI Masayuki

  Musashi Institute of Technology

関連論文

• Hydrothermal synthesis and evaluation of visible-light-active photocatalyst of (N, F)-codoped anatase TiO_2 from an F-containing titanium chemical
• Nano/Micro Patterning of Inorganic Thin Films

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