Preparation and photocatalytic activity of RuO2 Loaded TiO2 nanotubes

被引：0
|
作者：
Wang Z. [1 ]
Zhu X. [1 ]
Li Y. [1 ]
Shen Z. [1 ]
机构：
[1] Jiangxi Key Laboratory of Advanced Ceramic Materials, School of Materials Science and Engineering, Jingdezhen Ceramic Institute, Jingdezhen, 333403, Jiangxi
来源：
| 1600年 / Chinese Ceramic Society卷 / 44期
关键词：
Electrolysis; Photocatalytic activity; Ruthenium oxide loaded; Titanium dioxide nanotubes arrays; Visible light;
D O I：
10.14062/j.issn.0454-5648.2016.10.17
中图分类号：
学科分类号：
摘要：
RuO2 loaded TiO2 nanotube arrays photocatalyst was fabricated via anodic oxidation, electrolytic method and impregnation method. The morphology, structure and surface chemical states of the nanotubes were analyzed. The change of ruthenium ion in the impregnation solution before and after electrolysis was analyzed by UV-Vis absorption spectroscopy. The photocatalytic properties of RuO2/TiO2 nanotube arrays to methylene blue solution were investigated under visible light irradiation. The results indicate that Ru ion in the impregnating solution exists in +2 valence state at an applying voltage of 0.85 V. Ru element can be only loaded onto the TiO2 nanotubes surface when the Ru3+ is reduced to Ru2+ in the impregnation solution, and then formed RuO2 after calcination. RuO2/TiO2 nanotubes are still remained the same structural characteristics as unloaded TiO2 nanotubes, and the crystal structure is not changed after RuO2 loading. The loading of RuO2 cannot cause the increase of the hydroxyl number on the surface of TiO2 nanotubes. The RuO2/TiO2 nanotube arrays with the optimum photocatalytic activity were fabricated in the ruthenium chloride solution with a concentration of 3.0 mmol/L at an electrolytic voltage of 0.85 V. The 2 h visible-light photocatalytic degradation rate of methylene blue increases from 37.50% for pure TiO2 nanotubes to 66.67% for RuO2/TiO2 nanotube arrays. © 2016, Editorial Department of Journal of the Chinese Ceramic Society. All right reserved.
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页码：1494 / 1500
页数：6
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