Confocal Microprobe Raman Spectroscopy for Investigating the Electrochemical Interface

Authors

Bin REN, Dept. of Chem., State Key Lab. for Phys. Chem. of Sol. Surf. and Inst. of Phys. Chem., Xiamen Univ., Xiamen 361005, China;
Feng ming LIU, Dept. of Chem., State Key Lab. for Phys. Chem. of Sol. Surf. and Inst. of Phys. Chem., Xiamen Univ., Xiamen 361005, China;
Xufeng LIN, Dept. of Chem., State Key Lab. for Phys. Chem. of Sol. Surf. and Inst. of Phys. Chem., Xiamen Univ., Xiamen 361005, China;
Zhong-qun TIAN, Dept. of Chem., State Key Lab. for Phys. Chem. of Sol. Surf. and Inst. of Phys. Chem., Xiamen Univ., Xiamen 361005, China;

Corresponding Author

Bin REN(bren@xmu.edu.cn);
Zhong qun TIAN

Abstract

The invention of the surface enhanced Raman spectroscopy (SERS) in the mid of 1970s, opened an entirely new and very promising area. However, it was found that SERS of practical application in electrochemistry can only be found on noble metal surfaces, such as Ag, Au and Cu that exhibit huge surface enhancement [1] . This greatly limits the application of SERS in electrochemistry. In electrocatalysis, corrosion inhibition, sensor, and power source, the most widely used materials are Pt, Fe and Ni and their alloys as well as Si. Thus, it is of great significance to extend surface Raman study to transition metals and semiconductors. Although the effort has been made along this direction by several groups since the late of 1970s, only recently, this goal has been attained [2,3] . The success of our work towards the goal is benefited from the improvement of the Raman instrumentation and the development of proper electrode surface pretreatment for transition metal surfaces. The employment of the charge_coupled device (CCD) detector, the confocal microscope, and the notch filter in the Raman instrumentation, brought up a new generation Raman instrument. It provides very high sensitivity that can partially break the limitation of the sensitivity to the surface Raman investigation [4] . The most important is, with the confocal pinhole, the instrument can only collect the light from the focus of the laser, thus it can effectively exclude the interference of the solution Raman signal, which makes the detection of very weak Raman signal from surface feasible. The emphasis of this paper is placed on the methodology. Some examples are given to demonstrate the advance in this area.

Keywords

Electrochemical interface, Confocal microprobe Raman spectroscopy, Platinum, Roughened, Coadsorption

DOI Link

https://doi.org/10.61558/2993-074X.1412

Publication Date

2001-02-28

Online Available Date

2001-02-28

Revised Date

2001-02-28

Received Date

2001-02-28

Recommended Citation

Bin REN, Feng ming LIU, Xufeng LIN, Zhong-qun TIAN. Confocal Microprobe Raman Spectroscopy for Investigating the Electrochemical Interface[J]. Journal of Electrochemistry, 2001 , 7(1): 41-47.
DOI: 10.61558/2993-074X.1412
Available at: https://jelectrochem.xmu.edu.cn/journal/vol7/iss1/3