硅酸盐学报2016，Vol.44Issue(10)：1494-1500,7.DOI:10.14062/j.issn.0454-5648.2016.10.17
RuO2负载TiO2纳米管的制备及其光催化性能
Preparation and Photocatalytic Activity of RuO2 Loaded TiO2 Nanotubes
摘要
Abstract
RuO2 loaded TiO2 nanotube arrays photocatalyst was fabricatedvia 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 0.85V. 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 3.0mmol/L at an electrolytic voltage of 0.85V. 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.关键词
二氧化钛纳米管阵列/氧化钌负载/电解/可见光/光催化活性Key words
titanium dioxide nanotubes arrays/ruthenium oxideloaded/electrolysis/visible light/photocatalytic activity分类
化学化工引用本文复制引用
王竹梅,朱晓玲,李月明,沈宗洋..RuO2负载TiO2纳米管的制备及其光催化性能[J].硅酸盐学报,2016,44(10):1494-1500,7.基金项目
国家自然科学基金(51462010)；江西省自然科学基金(20114BAB203021)项目。 （51462010）
