Novel TiO2-Pt@SiO2 nanocomposites with high photocatalytic activity

doi:10.1039/c2nr30523b

CORC > 北京大学 > 化学与分子工程学院

	Novel TiO2-Pt@SiO2 nanocomposites with high photocatalytic activity
	Wu, Hao-Shuai ; Sun, Ling-Dong ; Zhou, Huan-Ping ; Yan, Chun-Huan
刊名	nanoscale
	2012
关键词	EXPOSED 001 FACETS AU-FE3O4 NANOPARTICLES ELECTRON-TRANSFER NANOTUBE ARRAYS THIN-FILMS TIO2 NANOSHEETS CARBON
DOI	10.1039/c2nr30523b
英文摘要	This article reports a facile and controllable two-step method to construct TiO2-Pt@SiO2 nanocomposites. TiO2 nanoparticles (NPs), with small size and high surface energy, were synthesized by a solvothermal reaction process. The TiO2-Pt@SiO2 nanocomposites were fabricated by a reverse micro-emulsion method. SiO2 shell coated NPs were adopted for further photocatalytic reaction. Because of their small size and high surface energy, TiO2@SiO2 and TiO2-Pt@SiO2 nanocomposites show higher photocatalytic activity than commercial Degussa P25. Compared with TiO2@SiO2, TiO2-Pt@SiO(2)nanocomposites have improved photocatalytic activity due to the Pt induced spatial separation of electrons and holes. The silica shells not only maintain the structure of the nanocomposites but also prevent their aggregation during the photocatalytic reactions, which is highly important for the good durability of the photocatalyst. This strategy is simple, albeit efficient, and can be extended to the synthesis of other composites of noble metals. It has opened a new window for the construction of hetero-nanocomposites with high activity and durability, which would serve as excellent models in catalytic systems of both theoretical and practical interest.; Chemistry, Multidisciplinary; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied; SCI(E); EI; 18; ARTICLE; 10; 3242-3247; 4
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/236240]
专题	化学与分子工程学院
推荐引用方式 GB/T 7714	Wu, Hao-Shuai,Sun, Ling-Dong,Zhou, Huan-Ping,et al. Novel TiO2-Pt@SiO2 nanocomposites with high photocatalytic activity[J]. nanoscale,2012.
APA	Wu, Hao-Shuai,Sun, Ling-Dong,Zhou, Huan-Ping,&Yan, Chun-Huan.(2012).Novel TiO2-Pt@SiO2 nanocomposites with high photocatalytic activity.nanoscale.
MLA	Wu, Hao-Shuai,et al."Novel TiO2-Pt@SiO2 nanocomposites with high photocatalytic activity".nanoscale (2012).