Formation and Structure of p-Nitrobenzoic Acid Adlayer on Au(111) Surface in HClO(4) Investigated by In-Situ Scanning Tunneling Microscopy
文献类型：期刊论文
| 作者 | Yang, Liu1,2,3; Chen, Ting1,2; Wang, Dong1,2; Wan, Li-Jun1,2 |
| 刊名 | JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
 |
| 出版日期 | 2011-06-01 |
| 卷号 | 11期号:6页码:4800-4805 |
| 关键词 | Adlayer Structure P-nitrobenzoic Acid Scanning Tunneling Microscopy Electro-reduction Electrochemistry |
| ISSN号 | 1533-4880 |
| DOI | 10.1166/jnn.2011.4196 |
| 英文摘要 | The 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. |
| 语种 | 英语 |
| WOS记录号 | WOS:000291568100018 |
| 出版者 | AMER SCIENTIFIC PUBLISHERS |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/72879]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Wang, Dong |
| 作者单位 | 1.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 |
| 推荐引用方式 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. |
入库方式： OAI收割
来源：化学研究所
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