Preparation and photocatalytic activity of [PWxMo 12-xO40]3-/TiO2 hybrid film composites

Akira Nakajima; Tomohisa Koike; Sayaka Yanagida; Toshihiro Isobe; Yoshikazu Kameshima; Kiyoshi Okada

doi:10.1016/j.apcata.2010.07.001

Preparation and photocatalytic activity of [PW_xMo _12-xO₄₀]^3-/TiO₂ hybrid film composites

Akira Nakajima, Tomohisa Koike, Sayaka Yanagida, Toshihiro Isobe, Yoshikazu Kameshima, Kiyoshi Okada

研究成果 › 査読

15 被引用数 (Scopus)

抄録

Keggin ions (PW₁₂O₄₀^3- (PW₁₂), PW₆Mo₆O₄₀^3- (PW₆Mo ₆), PMo₁₂O₄₀^3- (PMo₁₂)) and TiO₂ hybrid thin films were prepared using the layer-by-layer (LBL) method. Their photocatalytic activities were investigated using gaseous 2-propanol (IPA) decomposition. All films were transparent in the visible wavelength range. From XPS and UV-vis spectra, it was confirmed that LBL coating was attained using the same thicknesses between Keggin ions and TiO ₂. For IPA decomposition, PW₁₂ was the most effective for the combination with TiO₂. The PMo₁₂ possessed the highest adsorption capability against gaseous IPA, suggesting the effect of pseudo-liquid phase. Visible-light excitation of reduced Keggin ions will play an important role in the entire photocatalytic activity of IPA decomposition.

本文言語	English
ページ（範囲）	130-135
ページ数	6
ジャーナル	Applied Catalysis A: General
巻	385
号	1-2
DOI	https://doi.org/10.1016/j.apcata.2010.07.001
出版ステータス	Published - 9月 15 2010
外部発表	はい

ASJC Scopus subject areas

触媒
プロセス化学およびプロセス工学

文献へのアクセス

10.1016/j.apcata.2010.07.001

他のファイルとリンク

引用スタイル

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title = "Preparation and photocatalytic activity of [PWxMo 12-xO40]3-/TiO2 hybrid film composites",

abstract = "Keggin ions (PW12O403- (PW12), PW6Mo6O403- (PW6Mo 6), PMo12O403- (PMo12)) and TiO2 hybrid thin films were prepared using the layer-by-layer (LBL) method. Their photocatalytic activities were investigated using gaseous 2-propanol (IPA) decomposition. All films were transparent in the visible wavelength range. From XPS and UV-vis spectra, it was confirmed that LBL coating was attained using the same thicknesses between Keggin ions and TiO 2. For IPA decomposition, PW12 was the most effective for the combination with TiO2. The PMo12 possessed the highest adsorption capability against gaseous IPA, suggesting the effect of pseudo-liquid phase. Visible-light excitation of reduced Keggin ions will play an important role in the entire photocatalytic activity of IPA decomposition.",

keywords = "2-Propanol, Keggin, Layer-by-layer method, Photocatalyst, TiO",

author = "Akira Nakajima and Tomohisa Koike and Sayaka Yanagida and Toshihiro Isobe and Yoshikazu Kameshima and Kiyoshi Okada",

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AU - Nakajima, Akira

AU - Koike, Tomohisa

AU - Yanagida, Sayaka

AU - Isobe, Toshihiro

AU - Kameshima, Yoshikazu

AU - Okada, Kiyoshi

PY - 2010/9/15

Y1 - 2010/9/15

N2 - Keggin ions (PW12O403- (PW12), PW6Mo6O403- (PW6Mo 6), PMo12O403- (PMo12)) and TiO2 hybrid thin films were prepared using the layer-by-layer (LBL) method. Their photocatalytic activities were investigated using gaseous 2-propanol (IPA) decomposition. All films were transparent in the visible wavelength range. From XPS and UV-vis spectra, it was confirmed that LBL coating was attained using the same thicknesses between Keggin ions and TiO 2. For IPA decomposition, PW12 was the most effective for the combination with TiO2. The PMo12 possessed the highest adsorption capability against gaseous IPA, suggesting the effect of pseudo-liquid phase. Visible-light excitation of reduced Keggin ions will play an important role in the entire photocatalytic activity of IPA decomposition.

AB - Keggin ions (PW12O403- (PW12), PW6Mo6O403- (PW6Mo 6), PMo12O403- (PMo12)) and TiO2 hybrid thin films were prepared using the layer-by-layer (LBL) method. Their photocatalytic activities were investigated using gaseous 2-propanol (IPA) decomposition. All films were transparent in the visible wavelength range. From XPS and UV-vis spectra, it was confirmed that LBL coating was attained using the same thicknesses between Keggin ions and TiO 2. For IPA decomposition, PW12 was the most effective for the combination with TiO2. The PMo12 possessed the highest adsorption capability against gaseous IPA, suggesting the effect of pseudo-liquid phase. Visible-light excitation of reduced Keggin ions will play an important role in the entire photocatalytic activity of IPA decomposition.

KW - 2-Propanol

KW - Keggin

KW - Layer-by-layer method

KW - Photocatalyst

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