Effect of γ-ray irradiation on the wettability of TiO2 single crystals

被引：44

作者：

Dohshi, S

Anpo, M

Okuda, S

Kojima, T

机构：

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

[2] Osaka Prefecture Univ, Res Ctr Radiat & Radioisotopes, Res Inst Adv Sci & Technol, Osaka 5998570, Japan

来源：

TOPICS IN CATALYSIS | 2005年 / 35卷 / 3-4期

关键词：

TiO2 single Crystals; hydrophilicity of TiO2 surfaces; Contact angle; v-irradiation; water droplet;

D O I：

10.1007/s11244-005-3841-1

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

The contact angles of the water droplets on TiO2 single crystal surfaces decreased and became superhydrophilic state by gamma-ray irradiation. It was found that these behaviors were dependent on gamma-ray irradiation atmosphere, i.e., in air and in N-2 atmosphere (r. h.; 30%) as well as crystal faces of TiO2 single crystals, i.e., TiO2 (100) and (110) surfaces. It was also found from the results of UV-Vis and ESR measurements that gamma-ray irradiation under N-2 atmosphere led to the oxygen vacancies and associated Ti3+, regardless of the presence of gaseous water. Moreover, it was suggested that the organic molecules adsorbed on TiO2 single crystal surfaces decomposed by gamma-ray irradiation.

引用

页码：327 / 330

页数：4

共 21 条

[1] 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 [J].