Surface Enhanced Raman Spectroscopic Studies of Pyridine Adsorbed on Ti/Au@SiO₂ Film Electrode

Authors

Min-min XU, 苏州大学材料与化学化工学部，江苏 苏州 215123;
Ke LIU, 苏州大学材料与化学化工学部，江苏 苏州 215123;
Qing-hua GUO, 苏州大学材料与化学化工学部，江苏 苏州 215123;
Jian-lin YAO, 苏州大学材料与化学化工学部，江苏 苏州 215123;Follow

Corresponding Author

Jian-lin YAO(jlyao@suda.edu.cn)

Abstract

This study was performed based on shell-isolated nanoparticles-enhanced Raman spectroscopy (SHINERS) technology. The Au@SiO₂ nanoparticles were prepared and characterized by TEM and cyclic voltammetry. It was shown that the shell of SiO₂ was compact. The high quality signal measured by surface enhanced Raman spectroscopy (SERS) was obtained from the adsorbed pyridine on Ti/Au@SiO₂ electrode. The origin of the SERS signals was further confirmed by testing Pt and Ni electrodes. In addition, potential dependent adsorption behavior was investigated. It was found that pyridine was adsorbed parallel on the surface from -0.1 V to -0.6 V, and converted to perpendicular adsorption from -0.6 V. At last, pyridine was desorbed from the electrode accompanied with hydrogen evolution when the potential moved to -1.2 V.

Graphical Abstract

Keywords

surface enhanced Raman spectroscopy, Ti electrode, Au@SiO2 nanoparticles, pyridine

DOI Link

https://doi.org/10.13208/j.electrochem.130888

Publication Date

2014-06-28

Online Available Date

2013-12-04

Revised Date

2013-11-29

Received Date

2013-09-13

Recommended Citation

Min-min XU, Ke LIU, Qing-hua GUO, Jian-lin YAO. Surface Enhanced Raman Spectroscopic Studies of Pyridine Adsorbed on Ti/Au@SiO₂ Film Electrode[J]. Journal of Electrochemistry, 2014 , 20(3): 272-276.
DOI: 10.13208/j.electrochem.130888
Available at: https://jelectrochem.xmu.edu.cn/journal/vol20/iss3/9