Electroless Deposition of Silver Dendrite Nanostructure onto Glassy Carbon Electrode and Its Electrocatalytic Activity for Ascorbic Acid Oxidation

Md Mahmudul Hasan, Riad Hussain Rakib, Mohammad Abul Hasnat*, Yuki Nagao

*この研究の対応する著者

研究成果: Article査読

8 被引用数 (Scopus)

抄録

Well-defined silver dendrite nanostructures with primary and secondary branches on a glassy carbon electrode (GCE) surface are first demonstrated using a simple wet chemical electroless deposition method without any aid of a surfactant. The properties of dendrite structures were characterized using scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX), X-ray powder diffraction (XRD), X-ray photoelectron spectroscopy (XPS), cyclic voltammetry (CV), and electrochemical impedance spectroscopy (EIS). Results of XPS and XRD indicated that most of the silver particles were not oxidized. The obtained silver dendrite GCE (Ag/GCE) showed high electrochemical activity toward catalytic oxidation for ascorbic acid (AA). The oxidation process followed a stepwise mechanism at slower scan rates (υ < 0.15 V s-1) and a concerted mechanism at faster scan rates (υ > 0.15 V s-1). The silver nanostructures are stable on the GCE surface and could be employed as an anode for an AA fuel cell.

本文言語English
ページ(範囲)2907-2915
ページ数9
ジャーナルACS Applied Energy Materials
3
3
DOI
出版ステータスPublished - 2020 3月 23
外部発表はい

ASJC Scopus subject areas

  • 化学工学(その他)
  • エネルギー工学および電力技術
  • 電気化学
  • 材料化学
  • 電子工学および電気工学

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