Single Nanobubble Formation on Au Nanoelectrodes and Au@WS₂ Nanoelectrodes: Voltammetric Analysis and Electrocatalysis

Authors

Xianzhun Luo, Anhui Province Key laboratory of biomedical materials and chemical measurement, Key Laboratory of Functional Molecular Solids, Ministry of Education, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, 241000, P.R. China
Xiaohu Chen, Anhui Province Key laboratory of biomedical materials and chemical measurement, Key Laboratory of Functional Molecular Solids, Ministry of Education, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, 241000, P.R. China
Yongxin Li, Anhui Province Key laboratory of biomedical materials and chemical measurement, Key Laboratory of Functional Molecular Solids, Ministry of Education, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, 241000, P.R. China

Document Type

Article

Corresponding Author(s)

Yongxin Li(yongli@mail.ahnu.edu.cn)

Abstract

Taking advantage of the extremely small size of the gold nanodisk electrode, the single hydrogen nanobubble generated on the surface of the nanoelectrode was studied to evaluate its hydrogen evolution performance. It was found that compared with the bare gold nanodisk electrode, the bubble formation potential of the gold nanodisk electrode modified with tungsten disulfide quantum dots (WS₂ QDs) on the surface was more positive, indicating that its hydrogen evolution activity was higher. Microdynamic model analysis shows that the average standard rate constant of the rate-determining step of the hydrogen evolution reaction of gold nanoelectrodes modified with WS₂ QDs is approximately 12 times larger than that of gold nanoelectrodes. This work based on the formation of nanobubbles provides new ideas for the design and performance evaluation of hydrogen evolution reaction catalysts.

Graphical Abstract

Keywords

nanoelectrodes, nanobubble, electrocatalysis

DOI

10.61558/2993-074X.3475

Online Date

5-30-2024

Recommended Citation

Xianzhun Luo , Xiaohu Chen , Yongxin Li . Single Nanobubble Formation on Au Nanoelectrodes and Au@WS₂ Nanoelectrodes: Voltammetric Analysis and Electrocatalysis[J]. Journal of Electrochemistry, doi: 10.61558/2993-074X.3475.