Formation of Bi2WO6 Bipyramids with Vacancy Pairs for Enhanced Solar-Driven Photoactivity

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 环境水质学国家重点实验室

	Formation of Bi2WO6 Bipyramids with Vacancy Pairs for Enhanced Solar-Driven Photoactivity
	Zhang, Gong; Hu, Ziyu; Sun, Meng; Liu, Yang; Liu, Limin; Liu, Huijuan; Huang, Chin-Pao; Qu, Jiuhui; Li, Jinghong
刊名	ADVANCED FUNCTIONAL MATERIALS
	2015-06-24
卷号	25 期号:24 页码:3726-3734
英文摘要	In order to improve the photoactivity, many attempts have focused on increasing the exposure of highly reactive surfaces on crystals. However, the connection between the reactive surfaces and enhancement is still elusive. Herein, Bi2WO6 nanostructured bipyramids with a large fraction of {100} facets are fabricated by the solvothermal method. The formation of "Bi-O" dimer vacancy pairs on the {100} high-energy facets is responsible for the reduction in band gap and the decrease in the recombination of photo-excited charge carriers, which is unambiguously confirmed by the positron annihilation spectra (PAS), X-ray photoelectron spectrum (XPS), and theoretical calculations. The effective separation of electron-hole pairs and the narrowing bandgap significantly improve the photoactivity of Bi2WO6 nanobipyramids, especially under solar light irradiation. These findings can be applied broadly to the design and fabrication of energy efficient and robust catalysts.
研究领域[WOS]	Chemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter
WOS记录号	WOS:000356822200012
公开日期	2016-03-15
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/32781]
专题	生态环境研究中心_环境水质学国家重点实验室
推荐引用方式 GB/T 7714	Zhang, Gong,Hu, Ziyu,Sun, Meng,et al. Formation of Bi2WO6 Bipyramids with Vacancy Pairs for Enhanced Solar-Driven Photoactivity[J]. ADVANCED FUNCTIONAL MATERIALS,2015,25(24):3726-3734.
APA	Zhang, Gong.,Hu, Ziyu.,Sun, Meng.,Liu, Yang.,Liu, Limin.,...&Li, Jinghong.(2015).Formation of Bi2WO6 Bipyramids with Vacancy Pairs for Enhanced Solar-Driven Photoactivity.ADVANCED FUNCTIONAL MATERIALS,25(24),3726-3734.
MLA	Zhang, Gong,et al."Formation of Bi2WO6 Bipyramids with Vacancy Pairs for Enhanced Solar-Driven Photoactivity".ADVANCED FUNCTIONAL MATERIALS 25.24(2015):3726-3734.