The Charge Transfer Effect of SERS Induced by the Electrochemical Hydrogen Evolution Reaction

Authors

Feng-ming LIU, State Key Lab. for Phys. Chem. of Sol. Surf., Inst. of Phys. Chem. and Dept. of Chem., Xiamen Univ., Xiamen 361005, China
Qi HAN, State Key Lab. for Phys. Chem. of Sol. Surf., Inst. of Phys. Chem. and Dept. of Chem., Xiamen Univ., Xiamen 361005, China
Yan-xia CHEN, State Key Lab. for Phys. Chem. of Sol. Surf., Inst. of Phys. Chem. and Dept. of Chem., Xiamen Univ., Xiamen 361005, China
Qi-ling ZHONG, Dept. Chem., Jiangxi Normal Univ., Nanchang 330027, China
Bin REN, State Key Lab. for Phys. Chem. of Sol. Surf., Inst. of Phys. Chem. and Dept. of Chem., Xiamen Univ., Xiamen 361005, China
Zhong-qun TIAN, State Key Lab. for Phys. Chem. of Sol. Surf., Inst. of Phys. Chem. and Dept. of Chem., Xiamen Univ., Xiamen 361005, ChinaFollow

Corresponding Author

Zhong-qun TIAN(zqtian@xmu.edu.cn)

Abstract

As one of the important mechanisms of SERS, the charge transfer (CT) enhancement requires the strong interaction of the adsorbed species with the substrate in order to permit the transition of charge between the metal Fermi level (energy state) and the molecular orbital. The high enhancement needs the match of the energy gap between the Fermi level (or surface state) and the orbital energy level of the adsorbed molecules with the energy of the incident light. The electrode Fermi level is usually adjusted by the applied potential to satisfy the CT resonance. For the electrochemical reaction process, the frontier orbital energy level of the reacting surface species should be greatly different from that of the adsorbed molecules. Thus, it is interesting to test the additional SERS enhancement induced by the electrochemical reaction.

Keywords

SERS, Thiourea, Water, Charge transfer effect

DOI Link

https://doi.org/10.61558/2993-074X.3241

Publication Date

2001-02-28

Online Available Date

2001-02-28

Revised Date

2001-02-20

Received Date

2000-11-01

Recommended Citation

Feng-ming LIU, Qi HAN, Yan-xia CHEN, Qi-ling ZHONG, Bin REN, Zhong-qun TIAN. The Charge Transfer Effect of SERS Induced by the Electrochemical Hydrogen Evolution Reaction[J]. Journal of Electrochemistry, 2001 , 7(1): 74-77.
DOI: 10.61558/2993-074X.3241
Available at: https://jelectrochem.xmu.edu.cn/journal/vol7/iss1/21