Diffusion of Formaldehyde on Rutile TiO2(110) Assisted by Surface Hydroxyl Groups

doi:10.1063/1674-0068/30/cjcp1703030

	Diffusion of Formaldehyde on Rutile TiO2(110) Assisted by Surface Hydroxyl Groups
	Guan, Da-wei 1,2,3,4; Wang, Rui-min 2,3; Jin, Xian-chi 2,3; Dai, Dong-xu 2; Ma, Zhi-bo 2; Fan, Hong-jun 2; Yang, Xue-ming 1,2,4
刊名	CHINESE JOURNAL OF CHEMICAL PHYSICS
	2017-06-01
卷号	30 期号:3 页码:253-258
关键词	Diffusion Desorption Formaldehyde Scanning Tunneling Microscope
DOI	10.1063/1674-0068/30/cjcp1703030
英文摘要	As the photo-dissociation product of methanol on the TiO2(110) surface, the diffusion and desorption processes of formaldehyde (HCHO) were investigated by using scanning tunneling microscope (STM) and density functional theory (DFT). The molecular-level images revealed the HCHO molecules could diffuse and desorb on the surface at 80 K under UV laser irradiation. The diffusion was found to be mediated by hydrogen adatoms nearby, which were produced from photodissociation of methanol. Diffusion of HCHO was significantly decreased when there was only one H adatom near the HCHO molecule. Furthermore, single HCHO molecule adsorbed on the bare TiO2(110) surface was quite stable, little photo-desorption was observed during laser irradiation. The mechanism of hydroxyl groups assisted diffusion of formaldehyde was also investigated using theoretical calculations.
语种	英语
WOS记录号	WOS:000405446400003
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/152046]
专题	大连化学物理研究所_中国科学院大连化学物理研究所
作者单位	1.Chinese Acad Sci, Shanghai Adv Res Inst, Shanghai 201210, Peoples R China 2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Mol React Dynam, Dalian 116023, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.ShanghaiTech Univ, Sch Phys Sci & Technol, Shanghai 201210, Peoples R China
推荐引用方式 GB/T 7714	Guan, Da-wei,Wang, Rui-min,Jin, Xian-chi,et al. Diffusion of Formaldehyde on Rutile TiO2(110) Assisted by Surface Hydroxyl Groups[J]. CHINESE JOURNAL OF CHEMICAL PHYSICS,2017,30(3):253-258.
APA	Guan, Da-wei.,Wang, Rui-min.,Jin, Xian-chi.,Dai, Dong-xu.,Ma, Zhi-bo.,...&Yang, Xue-ming.(2017).Diffusion of Formaldehyde on Rutile TiO2(110) Assisted by Surface Hydroxyl Groups.CHINESE JOURNAL OF CHEMICAL PHYSICS,30(3),253-258.
MLA	Guan, Da-wei,et al."Diffusion of Formaldehyde on Rutile TiO2(110) Assisted by Surface Hydroxyl Groups".CHINESE JOURNAL OF CHEMICAL PHYSICS 30.3(2017):253-258.