The origin of enhanced photocatalytic activities of hydrogenated TiO2 nanoparticles

doi:10.1039/c7dt00827a

	The origin of enhanced photocatalytic activities of hydrogenated TiO2 nanoparticles
	Wang, JO; Dua, Y; Hao, WC; Wang JO(王嘉鸥); Liu, YN; Feng, HF; Yan, XB; Yang, HG
刊名	DALTON TRANSACTIONS
	2017
卷号	46 期号:32 页码:10694-10699
ISSN号	1477-9226
DOI	10.1039/c7dt00827a
文献子类	Article
英文摘要	The photocatalytic activity of semiconductors is largely governed by their light absorption, separation of photoinduced charge carriers and surface catalytically active sites, which are primarily controlled by the morphology, crystalline size, structure, and especially the electronic structure of photocatalysts. Black TiO2 is recognized as one of the most promising visible-light photocatalysts, due to its significantly enhanced visible-light photocatalytic performance in comparison to intrinsic TiO2. In this work, black TiO2 is synthesized through the hydrogenation process. The sample shows a TiO2@TiO2-x core/shell structure which is attributed to hydrogenation. By using X-ray photoelectron spectroscopy (XPS), X-ray absorption spectroscopy (XAS), and nuclear magnetic resonance (NMR) spectroscopy, we identified the featured midgap electronic states in black TiO2, which gave rise to the TiO2-x shell layer. These states lead to the improvement of visible-light absorption and the separation of photoinduced charge carriers, which consequently result in remarkable enhanced photocatalytic activities in black TiO2.
电子版国际标准刊号	1477-9234
WOS关键词	X-RAY-ABSORPTION ; TITANIUM-DIOXIDE ; VISIBLE-LIGHT ; SURFACE MODIFICATION ; DEFECTS ; NANOMATERIALS ; WATER
WOS研究方向	Chemistry
语种	英语
WOS记录号	WOS:000408696500024
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/285263]
专题	高能物理研究所_实验物理中心高能物理研究所_多学科研究中心
作者单位	中国科学院高能物理研究所
推荐引用方式 GB/T 7714	Wang, JO,Dua, Y,Hao, WC,et al. The origin of enhanced photocatalytic activities of hydrogenated TiO2 nanoparticles[J]. DALTON TRANSACTIONS,2017,46(32):10694-10699.
APA	Wang, JO.,Dua, Y.,Hao, WC.,王嘉鸥.,Liu, YN.,...&Yang, HG.(2017).The origin of enhanced photocatalytic activities of hydrogenated TiO2 nanoparticles.DALTON TRANSACTIONS,46(32),10694-10699.
MLA	Wang, JO,et al."The origin of enhanced photocatalytic activities of hydrogenated TiO2 nanoparticles".DALTON TRANSACTIONS 46.32(2017):10694-10699.