Surface-enhanced Raman Spectroscopic Studies on the Inhibition Mechanisms for Imidazole on Zinc Surfaces

Abstract

Abstract: Surface-enhanced Raman spectroscopy(SERS) was employed to study the surface layers formation and inhibition behavior of imidazole at zinc electrode. The inhibition mechanism of imidazole on zinc surfaces was investigated with the variations in potential and pH. The results reveal that imidazole absorbed on the zinc surface by its N atom with perpendicular orientation in a wide potential region in the solutions with pH=8.53. In alkaline solution with pH=11.40, imidazole was absorbed on the zinc surface by its N atom in a perpendicular position at a relative positive potential. With the negative movement of potential, the orientation was changed in which the ring was slightly tilted on the surface. Imidazole exhibited a higher effective inhibition on zinc in neutral solution than that in alkaline solution due to the strong interaction with zinc for the former.

Key words: Zn electrode, Imidazole, Inhibition, Surface-enhanced Raman spectroscopy(SERS)

CLC Number:

O647
O657.37

TrendMD:

GU Ren-Ao*, BAO Fang, SHEN Xiao-Ying, CUI Yan, YAO Jian-Lin. Surface-enhanced Raman Spectroscopic Studies on the Inhibition Mechanisms for Imidazole on Zinc Surfaces[J]. Chem. J. Chinese Universities, doi: .

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Surface-enhanced Raman Spectroscopic Studies on the Inhibition Mechanisms for Imidazole on Zinc Surfaces

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