Preparation and Photocatalytic Activity of [PWxMo12-xO40]3-/TiO2 Hybrid Film Composites
Preparation and Photocatalytic Activity of [PWxMo12-xO40]3-/TiO2 Hybrid Film Composites
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DOI：
10.1016/j.apcata.2010.07.001
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发表时间：
2010-09
影响因子：
5.5
通讯作者：
A. Nakajima;T. Koike;S. Yanagida;T. Isobe;Y. Kameshima;K. Okada
中科院分区：
文献类型：
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作者：
A. Nakajima;T. Koike;S. Yanagida;T. Isobe;Y. Kameshima;K. Okada
采用逐层（LBL）法制备了Keggin离子（PW 12 O 403-（PW 12），PW 6 Mo 6 O 403-（PW 6 Mo 6），PMo 12 O 403-（PMo 12））和TiO 2杂化薄膜。以异丙醇（IPA）为催化剂，考察了它们的光催化活性.所有膜在可见光波长范围内是透明的。从XPS和UV-vis光谱，它被证实，LBL涂层获得使用相同的厚度之间的Keggin离子和TiO 2。对于IPA的分解，PW 12与TiO 2的组合是最有效的。PMo 12对气态IPA的吸附能力最强，表现出准液相效应。可见光激发的还原Keggin离子将发挥重要作用的IPA分解的整个光催化活性。
Keggin ions (PW12O403−(PW12), PW6Mo6O403−(PW6Mo6), PMo12O403−(PMo12)) and TiO2hybrid 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 TiO2. For IPA decomposition, PW12was the most effective for the combination with TiO2. The PMo12possessed 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.