Nanowire-structured titanate with anatase titania : Characterization and photocatalytic activity

Amano, Fumiaki; Yasumoto, Taikei; Shibayama, Tamaki; Uchida, Satoshi; Ohtani, Bunsho

Nanowire-structured titanate with anatase titania : Characterization and photocatalytic activity

Amano, Fumiaki; Yasumoto, Taikei; Shibayama, Tamaki et al.

Applied Catalysis B : Environmental, 2009, 89(3-4), 583-589

Permalink : https://hdl.handle.net/2115/44873

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アクセス権	open access
URI	https://hdl.handle.net/2115/44873
タイトル	Nanowire-structured titanate with anatase titania : Characterization and photocatalytic activity
著者	Amano, Fumiaki ; Yasumoto, Taikei ; Shibayama, Tamaki ; Uchida, Satoshi ; Ohtani, Bunsho
e-Rad_Researcher 10431347 著者名 Amano, Fumiaki
著者名 Yasumoto, Taikei
著者名 Shibayama, Tamaki
著者名 Uchida, Satoshi
e-Rad_Researcher 80176924 著者名 Ohtani, Bunsho
言語	英語
キーワード	Potassium titanate
	Nanowire
	Anatase
	Titanium oxide
	Photodegradation
	Oxidative decomposition
	Mineralization
	Hydrogen evolution
	Photodeposition
発行日	2009-07-15
出版者	Elsevier B.V.
収録物名	Applied Catalysis B : Environmental
巻(号)	89(3-4)
ページ	583-589
抄録	Nanowire-structured titanate with titanium(IV) oxide (titania) was obtained by calcination of potassium ion-containing titanate nanowires prepared through alkali treatment of titania nanoparticles. The presence of potassium ions in the as-synthesized titanate nanowires was required for maintenance of the nanowire structure under the conditions of post heat treatment. The crystallite structure, composition, morphology, specific surface area, pore volume distribution, and optical properties were found to be dependent on the temperature at which titanate nanowires were calcined. Photocatalytic activity was examined using three probe reactions: oxidative decomposition of acetic acid in an aqueous solution, oxygen liberation from an aqueous silver sulfate solution, and hydrogen liberation from an aqueous methanol solution in the presence of hexachloroplatinic acid as a precursor of photodeposition of platinum particles. Detailed characterization and results of photocatalytic activity tests revealed that titanate crystallites greatly contributed to the photocatalytic activities of the calcined nanowires except for photocatalytic hydrogen liberation. It was found that platinum was preferentially photodeposited on anatase crystallites rather than on titanate crystallites for hydrogen liberation.
資源タイプ	学術雑誌論文
出版タイプ	Accepted Manuscript
PISSN	0926-3373
関連情報 (isVersionOf)	出版社版DOI https://doi.org/10.1016/j.apcatb.2009.01.013