CAS OpenIR
In Situ Tracking of Organic Reactions at the Vapor/Liquid Interfaces of Ionic Liquids
Song, Yuting1,2,3; Huo, Feng1; Jiang, Yi2; Zhang, Suojiang1; Chen, Shimou1
2018-10-19
Source PublicationCHEMPHYSCHEM
ISSN1439-4235
Volume19Issue:20Pages:2741-2750
Abstract

The molecular structures of ionic liquids at interfaces play a crucial role in determining their chemical activities in applications. In situ X-ray photoelectron spectroscopy (XPS) was used to track the evolution of X-ray irradiation-induced chemical reactions in a series of ionic liquids ([C(n)mim][AuCl4]; n=4, 6, 8, 10) on the Si (111) single-crystal surface. Analyses of microstructure and chemical bonding based on the XPS results indicated that reactions occurred at the vapor/liquid interfaces of the ionic liquids. The time-resolved XPS spectra revealed that with increasing irradiation time, the intensity of the peak corresponding to trivalent Au anion decreased for the four ionic liquids as Au was continually reduced to a lower chemical state and finally converted to gold nanoparticles. The rate and conversion of the reaction were associated with the length of the alkyl chain of the ionic liquids cation. Molecular dynamics simulations further revealed that the alkyl chain of the cation in the ionic liquids was oriented towards the vacuum environment at the vapor/liquid interface. Our results provide a real-time atomic-scale experimental evidence of organic reactions at the vapor/liquid interfaces of ionic liquids. The findings are important for understanding the roles of ionic liquids in catalysis, separation, electrochemistry, functional materials, and so on.

KeywordIonic Liquids Insitu Xps Vapor Liquid Interface Reaction Tracking
DOI10.1002/cphc.201800476
Language英语
WOS KeywordRay Photoelectron-spectroscopy ; Atom Force-field ; Molecular-dynamics Simulation ; Sum-frequency Generation ; Room-temperature ; Absorption-spectroscopy ; Electronic-structure ; Formation Mechanism ; Carbon Nanotubes ; Double-layer
Funding ProjectNational Key Projects for Fundamental Research and Development of China[2016YFB0100104] ; National Natural Science Foundation of China[91534109] ; National Natural Science Foundation of China[91434203] ; National Natural Science Foundation of China[51306194] ; Beijing Municipal Science and Technology Project[D171100005617001] ; Henan province science and technology cooperation project[172106000061]
WOS Research AreaChemistry ; Physics
WOS SubjectChemistry, Physical ; Physics, Atomic, Molecular & Chemical
Funding OrganizationNational Key Projects for Fundamental Research and Development of China ; National Natural Science Foundation of China ; Beijing Municipal Science and Technology Project ; Henan province science and technology cooperation project
WOS IDWOS:000448062900017
PublisherWILEY-V C H VERLAG GMBH
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/26333
Collection中国科学院过程工程研究所
Corresponding AuthorZhang, Suojiang; Chen, Shimou
Affiliation1.Chinese Acad Sci, Beijing Key Lab Ion Liquids Clean Proc, Key Lab Green Proc & Engn, State Key Lab Multiphase Complex Syst,Inst Proc E, Beijing 100190, Peoples R China
2.Chinese Acad Sci, Chengdu Inst Organ Chem, Chengdu 610041, Sichuan, Peoples R China
3.Univ Chinese Acad Sci, Chinese Acad Sci, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Song, Yuting,Huo, Feng,Jiang, Yi,et al. In Situ Tracking of Organic Reactions at the Vapor/Liquid Interfaces of Ionic Liquids[J]. CHEMPHYSCHEM,2018,19(20):2741-2750.
APA Song, Yuting,Huo, Feng,Jiang, Yi,Zhang, Suojiang,&Chen, Shimou.(2018).In Situ Tracking of Organic Reactions at the Vapor/Liquid Interfaces of Ionic Liquids.CHEMPHYSCHEM,19(20),2741-2750.
MLA Song, Yuting,et al."In Situ Tracking of Organic Reactions at the Vapor/Liquid Interfaces of Ionic Liquids".CHEMPHYSCHEM 19.20(2018):2741-2750.
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