Cyclic Voltammetric Studies in Adsorption of Cetyltrimethylammonium Bromide (CTAB) on Au(111) Electrode

Authors

Ling CHEN, State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian, 361005,China;
Chang-deng XU, State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian, 361005,China;
Jin-yu YE, State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian, 361005,China;
Chun-hua ZHEN, State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian, 361005,China;
Shi-gang SUN, State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian, 361005,China;Follow

Corresponding Author

Shi-gang SUN(sgsun@xmu.edu.cn)

Abstract

Adsorption of cetyltrimethylammonium bromide (CTAB) on Au(111) electrode was investigated by cyclic voltammetry (CV). The results demonstrate that the adsorption of CTAB on Au(111) yields particular CV features. Both the adsorption of CTA⁺ and the phase change of the surfactant film are surface structure selective. Two pairs of stable sharp peaks that depend on halide species appear upon the adsorption of cationic surfactant on Au(111) electrode. The relationship between the peak current density and the scan rate indicates that the electron transfer reaction was controlled by diffusion process. These CV features are observed for the first time, and reflect the specific interaction between CTAB and Au(111). The results are of significance in understanding the interaction of CTAB with Au surface for shape-control synthesis of Au nanoparticles.

Graphical Abstract

Keywords

cetyltrimethylammonium bromide, Au(111) electrode, cyclic voltammetry

DOI Link

https://doi.org/10.13208/j.electrochem.130890

Publication Date

2014-08-28

Online Available Date

2013-11-14

Revised Date

2013-11-04

Received Date

2013-10-20

Recommended Citation

Ling CHEN, Chang-deng XU, Jin-yu YE, Chun-hua ZHEN, Shi-gang SUN. Cyclic Voltammetric Studies in Adsorption of Cetyltrimethylammonium Bromide (CTAB) on Au(111) Electrode[J]. Journal of Electrochemistry, 2014 , 20(4): 302-306.
DOI: 10.13208/j.electrochem.130890
Available at: https://jelectrochem.xmu.edu.cn/journal/vol20/iss4/2