The shape-specific photocatalytic efficiency of quantum size TiO<sub>2sub> nanoparticles
- 作者：Zheng Chen<sup> ; sup><sup>zchen2007@sinano.ac.cnsup> ; Jinghai Liu ; Song Qiu ; Graham Dawson ; Wei Chen
- 关键词：One dimension ; Shape ; 1D ; PL
- 刊名：Catalysis Communications
- 出版年：2012
- 期刊代码：12_15667367
- 类别：ce
- 出版时间：5 May, 2012
- 卷：21
- 期：Complete
- 页码：1-4
- 文件大小：527 K
摘要
The hypothesis of increasing electron/hole separation and photocatalytic activity by elongating one dimension size of extremely small nanoparticles was verified. Comparable TiO<sub>2sub> nanorods and nanodots were prepared using very similar hydrolysis processes in oleic acid. The oleic acid coating on the TiO<sub>2sub> surface was removed using UV irradiation. The structure, surface and absorption properties of samples were characterized. Photoluminescence and photocatalytic activity of samples were evaluated semi-quantitatively. The experimental results proved that the nanorods did have more efficient electron/hole separation and higher photocatalytic activity than spherical nanodots.