Reactivity enhancement of 2-propanol photocatalysis on SO(4)(2-)/TiO(2): Insights from solid-state NMR spectroscopy

CORC > 武汉物理与数学研究所 > 中国科学院武汉物理与数学研究所 > 2011年以前论文发表（包括2011年）

	Reactivity enhancement of 2-propanol photocatalysis on SO(4)(2-)/TiO(2): Insights from solid-state NMR spectroscopy
	Zhang, Hailu 1,2; Yu, Huaguang 1,2; Zheng, Anmin 1; Li, Shenhui 1,2; Shen, Wanling 1,2; Deng, Feng 1
刊名	ENVIRONMENTAL SCIENCE & TECHNOLOGY
	2008-07-15
卷号	42 期号:14 页码:5316-5321
英文摘要	Solid-state NMR techniques have been employed to investigate the surface acidic properties of TiO(2) and sulfated TiO(2), as well as their photocatalytic activities toward 2-propanol. The multinuclear MAS NMR experiments clearly revealed that three different types of Bronsted acid sites with much stronger acid strength were generated after the sulfation of TiO(2). Due to the enhanced Bronsted acidity, the protonation of 2-propanol can occur more easily, preferentially leading to the formation of Ti-bound 2-propoxy species on the SO(4)(2-)/TiO(2) catalyst. The 2-propoxy species can be directly converted to CO(2) and thus the photocatalytic activity of sulfated TiO(2) catalyst is remarkably enhanced. For comparison, both hydrogen-bonded 2-propanol and Ti-bound 2-propoxy species are present on the TiO(2) catalyst with the former being predominant. The hydrogen-bonded 2-propanol species are oxidated into acetone molecules that are difficult to further convert into CO(2), and the conversion of 2-propoxy species to 2-propanol hampers the direct mineralization of 2-propoxy species on the TiO(2) catalyst.
WOS标题词	Science & Technology ; Technology ; Life Sciences & Biomedicine
类目[WOS]	Engineering, Environmental ; Environmental Sciences
研究领域[WOS]	Engineering ; Environmental Sciences & Ecology
关键词[WOS]	SULFATED TIO2 ; MAGNETIC-RESONANCE ; ACID SITES ; OXIDATION ; ADSORPTION ; CATALYSTS ; DEGRADATION ; TITANIA ; TRANSIENT ; SURFACES
收录类别	SCI
语种	英语
WOS记录号	WOS:000257620000049
公开日期	2015-10-13
内容类型	期刊论文
源URL	[http://ir.wipm.ac.cn/handle/112942/7971]
专题	武汉物理与数学研究所_2011年以前论文发表（包括2011年）
作者单位	1.Chinese Acad Sci, Wuhan Ctr Magnet Resonance, State Key Lab Magnet Resonance & Atom & Mol Phys, Wuhan Inst Phys & Math, Wuhan 430071, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Hailu,Yu, Huaguang,Zheng, Anmin,et al. Reactivity enhancement of 2-propanol photocatalysis on SO(4)(2-)/TiO(2): Insights from solid-state NMR spectroscopy[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2008,42(14):5316-5321.
APA	Zhang, Hailu,Yu, Huaguang,Zheng, Anmin,Li, Shenhui,Shen, Wanling,&Deng, Feng.(2008).Reactivity enhancement of 2-propanol photocatalysis on SO(4)(2-)/TiO(2): Insights from solid-state NMR spectroscopy.ENVIRONMENTAL SCIENCE & TECHNOLOGY,42(14),5316-5321.
MLA	Zhang, Hailu,et al."Reactivity enhancement of 2-propanol photocatalysis on SO(4)(2-)/TiO(2): Insights from solid-state NMR spectroscopy".ENVIRONMENTAL SCIENCE & TECHNOLOGY 42.14(2008):5316-5321.