- 著者
- Hasan Md. Mahmudul Rakib Riad Hussain Hasnat Mohammad Abul Nagao Yuki
- 出版者
- American Chemical Society
- 雑誌
- ACS Applied Energy Materials (ISSN:25740962)
- 巻号頁・発行日
- vol.3, no.3, pp.2907-2915, 2020-02-24
- 被引用文献数
- 15
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 towards 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 highly stable on the GCE surface and could be employed as an anode for an AA fuel cell.