Effect of the local structure of Ti-oxide species on the photocatalytic reactivity and photo-induced super-hydrophilic properties of Ti/Si and Ti/B binary oxide thin films

被引：22

作者：

Dohshi, S ^{[1
]}

Takeuchi, M ^{[1
]}

Anpo, M ^{[1
]}

机构：

[1] Osaka Prefecture Univ, Grad Sch Engn, Dept Appl Chem, Sakai, Osaka 5998531, Japan

来源：

CATALYSIS TODAY | 2003年 / 85卷 / 2-4期

关键词：

photocatalysis; photo-induced super-hydrophilicity; Ti/Si binary oxide; Ti/B binary oxide; oxide thin films; tetrahedral species; octahedral coordination;

D O I：

10.1016/S0920-5861(03)00387-0

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

From the results of various spectroscopic investigations of Ti-oxide-based binary oxides, it was found that tetrahedrally coordinated Ti-oxide species are formed in the thin films of Ti/Si binary oxides with low TiO2 content, while octahedrally coordinated TiO2 nano-particles are formed in the Ti/B binary oxide thin films, reflecting the effect of the crystalline structures of the host SiO2 or B2O3 on the local structure of the guest Ti-oxide species, respectively. The photocatalytic reactivity of the TiO2 thin films was found to be remarkably enhanced by the dispersion of the Ti-oxide moiety into both the SiO2 and B2O3 matrices, whereas the photo-induced super-hydrophilic properties of the TiO2 thin films were enhanced only by a combination or mixing of the Ti-oxide moiety with B2O3. (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：199 / 206

页数：8

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