In Situ Studies on Temperature-Dependent Photocatalytic Reactions of Methanol on TiO2(110)

doi:10.1021/acs.jpcc.9b02244

	In Situ Studies on Temperature-Dependent Photocatalytic Reactions of Methanol on TiO2(110)
	Zhang RD; Wang HC; Peng XX; 冯冉冉1,2,4); Liu AA; Guo Q; Zhou CY; Ma ZB; Yang XM; Jiang Y
刊名	JOURNAL OF PHYSICAL CHEMISTRY C
	2019-04-18
卷号	123 期号:15 页码:9993-9999
ISSN号	1932-7447
DOI	10.1021/acs.jpcc.9b02244
通讯作者	Ma, Zhibo(zhbma@dicp.ac.cn) ; Ren, Zefeng(zfren@dicp.ac.cn)
英文摘要	We studied the photocatalytic reaction of methanol on the TiO2(110) surface in situ by surface sum frequency generation vibrational spectroscopy. The in situ vibrational spectra of the photo-oxidation product, formaldehyde and methyl formate, on TiO2(110) was unambiguously assigned and identified. The temperature-dependent photocatalytic reaction efficiency was observed and suggested that the thermal diffusion might be important for the photocatalytic reaction. Scanning tunneling microscopy combined with ultraviolet light was used to investigate the photocatalytic reaction efficiency on the hydrox-ylated TiO2(110) surface, which shows that the neighboring hydroxyl group on the bridge-bonded oxygen site dramatically inhibits the photo oxidation of methanol because of the repulsion between hydroxyl groups. Our results provide direct vibrational spectral evidence of photo-oxidation products of methanol on TiO2(110), show the importance of thermal processes in surface photocatalytic reactions, and deepen our understanding on photochemistry on this surface.
分类号	二类/Q1
资助项目	Ministry of Science and Technology[2018YFA0208700] ; Ministry of Science and Technology[2016YFA0200602] ; Chinese Academy of Sciences[XDB17000000] ; National Natural Science Foundation of China[91645125] ; National Natural Science Foundation of China[21673236] ; National Natural Science Foundation of China[21688102] ; Youth Innovation Promotion Association of CAS[2017224]
WOS关键词	METHYL FORMATE ; CHEMICAL-REACTIONS ; HYDROGEN-PRODUCTION ; ADSORPTION ; DISSOCIATION ; FORMALDEHYDE ; SURFACE ; RUTILE ; WATER ; 1ST-PRINCIPLES
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science
语种	英语
WOS记录号	WOS:000465488600041
资助机构	Ministry of Science and Technology ; Chinese Academy of Sciences ; National Natural Science Foundation of China ; Youth Innovation Promotion Association of CAS
其他责任者	Ma, Zhibo ; Ren, Zefeng
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/80714]
专题	力学研究所_国家微重力实验室
推荐引用方式 GB/T 7714	Zhang RD,Wang HC,Peng XX,et al. In Situ Studies on Temperature-Dependent Photocatalytic Reactions of Methanol on TiO2(110)[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2019,123(15):9993-9999.
APA	Zhang RD.,Wang HC.,Peng XX.,冯冉冉1,2,4).,Liu AA.,...&Ren ZF.(2019).In Situ Studies on Temperature-Dependent Photocatalytic Reactions of Methanol on TiO2(110).JOURNAL OF PHYSICAL CHEMISTRY C,123(15),9993-9999.
MLA	Zhang RD,et al."In Situ Studies on Temperature-Dependent Photocatalytic Reactions of Methanol on TiO2(110)".JOURNAL OF PHYSICAL CHEMISTRY C 123.15(2019):9993-9999.