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›› 2006, Vol. 6 ›› Issue (3): 472-476.

• 材料工程专栏 • 上一篇    下一篇

Synthesis of Nitrogen-doped Titania by Solvothermal Reactions in Alcohols

Tsugio Sato,Yohei Aida,Masakazu Komatsu,殷澍   

  1. 日本Tohoku大学
  • 出版日期:2006-06-20 发布日期:2006-06-20

Synthesis of Nitrogen-doped Titania by Solvothermal Reactions in Alcohols

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  1. Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-8577, Japan
  • Online:2006-06-20 Published:2006-06-20

摘要: Nitrogen-doped titania nanoparticles were obtained by the homogeneous precipitation in hexamethylenetetramine- titanium trichloride-alcohol aqueous solutions at 90℃ followed by heating at 190℃. Anatase, rutile and brookite were obtained, where the crystallite size, specific surface area and color greatly changed as 5~50 nm, 20~200 m2/g and light gray to yellow, depending on the solvent and pH. The products after calcination were yellow, indicating doping with nitrogen ion. All colored titania showed photocatalytic activity under visible light irradiation for the oxidative decomposition of nitrogen monoxide in air. Especially, the nanoparticles of anatase type nitrogen-doped titania obtained using methanol aqueous solution showed excellent photocatalytic activity.

关键词: nitrogen-doped titania, solvothermal synthesis, alcohol, photocatalysis, nitrogen monoxide, decomposition

Abstract: Nitrogen-doped titania nanoparticles were obtained by the homogeneous precipitation in hexamethylenetetramine- titanium trichloride-alcohol aqueous solutions at 90℃ followed by heating at 190℃. Anatase, rutile and brookite were obtained, where the crystallite size, specific surface area and color greatly changed as 5~50 nm, 20~200 m2/g and light gray to yellow, depending on the solvent and pH. The products after calcination were yellow, indicating doping with nitrogen ion. All colored titania showed photocatalytic activity under visible light irradiation for the oxidative decomposition of nitrogen monoxide in air. Especially, the nanoparticles of anatase type nitrogen-doped titania obtained using methanol aqueous solution showed excellent photocatalytic activity.

Key words: nitrogen-doped titania, solvothermal synthesis, alcohol, photocatalysis, nitrogen monoxide, decomposition

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