ICCAS OpenIR
Formation and Structure of p-Nitrobenzoic Acid Adlayer on Au(111) Surface in HClO(4) Investigated by In-Situ Scanning Tunneling Microscopy
Yang, Liu1,2,3; Chen, Ting1,2; Wang, Dong1,2; Wan, Li-Jun1,2
2011-06-01
Source PublicationJOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
ISSN1533-4880
Volume11Issue:6Pages:4800-4805
AbstractThe adsorption and adlayer structure of p-nitrobenzoic acid (pNBA) on a Au(111) surface in 0.1 M HClO(4) are investigated by in-situ scanning tunneling microscopy (STM) and cyclic voltammetry. The pNBA adlayer is prepared by dipping Au(111) into a saturated pNBA aqueous solution. The cyclic voltammogram (CV) of the so-prepared Au(111) electrode shows an irreversible cathodic peak at 0.24 V, which corresponds to the electro-reduction reaction from pNBA to hydroxylamine, and a pair of reversible peaks at ca. 0.7 V, corresponding to redox reaction of hydroxylamine to nitrosobenzoic acid. STM is employed to investigate the pNBA adlayer structure. The molecules form ordered adlayers in (16 x 2 root 3), (7 x 4 root 3) and (9 X 6 root 3) structures at the double layer potential region. High resolution STM image reveals the details of the molecular arrangement in the adlayers. On the basis of the STM image and the chemical structure of pNBA, structural models for three adlayers are proposed. In all three structures, pNBA molecules adsorb perpendicularly with the carboxylic groups contacting with the Au(111) substrate. The effect of dipping time on the adlayer formation is investigated. Upon shifting the electrode potentials in negative direction to induce the electro-reduction reaction, the bright dots corresponding to the molecular aggregations start emerging on the surface and selectively locate at the elbow position along Au(111) reconstruction lines. The results provide direct evidence for the adsorption and electrochemical behavior of nitro-benzene derivatives.
KeywordAdlayer Structure P-nitrobenzoic Acid Scanning Tunneling Microscopy Electro-reduction Electrochemistry
DOI10.1166/jnn.2011.4196
Indexed BySCI
Language英语
WOS IDWOS:000291568100018
PublisherAMER SCIENTIFIC PUBLISHERS
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/72880
Collection中国科学院化学研究所
Corresponding AuthorWang, Dong
Affiliation1.Chinese Acad Sci, Inst Chem, Beijing 100190, Peoples R China
2.Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China
3.Chinese Acad Sci, Grad Univ, Beijing 100064, Peoples R China
Recommended Citation
GB/T 7714
Yang, Liu,Chen, Ting,Wang, Dong,et al. Formation and Structure of p-Nitrobenzoic Acid Adlayer on Au(111) Surface in HClO(4) Investigated by In-Situ Scanning Tunneling Microscopy[J]. JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY,2011,11(6):4800-4805.
APA Yang, Liu,Chen, Ting,Wang, Dong,&Wan, Li-Jun.(2011).Formation and Structure of p-Nitrobenzoic Acid Adlayer on Au(111) Surface in HClO(4) Investigated by In-Situ Scanning Tunneling Microscopy.JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY,11(6),4800-4805.
MLA Yang, Liu,et al."Formation and Structure of p-Nitrobenzoic Acid Adlayer on Au(111) Surface in HClO(4) Investigated by In-Situ Scanning Tunneling Microscopy".JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY 11.6(2011):4800-4805.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Yang, Liu]'s Articles
[Chen, Ting]'s Articles
[Wang, Dong]'s Articles
Baidu academic
Similar articles in Baidu academic
[Yang, Liu]'s Articles
[Chen, Ting]'s Articles
[Wang, Dong]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Yang, Liu]'s Articles
[Chen, Ting]'s Articles
[Wang, Dong]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.