通过脱合金方法对金银合金薄膜进行选择性腐蚀得到了具有三维双连通结构的纳米多孔金(NPG).将NPG作为三电极测试体系中的工作电极,利用循环伏安法表征了其在碱性条件下对10 mmol/L的水合肼溶液的电催化性能.结果表明,纳米多孔金对水合肼的电催化氧化不仅峰电流强度比纯金电极高一个数量级以上,而且起峰电位很低,表现出很高的电催化氧化性能,这种优越的电催化性能和它的高比表面积以及多孔结构紧密相关.
Nanoporous gold (NPG) films are found to exhibit high electrocatalytic properties towards hydrazine (N2H4) oxidation.Compared with bulk gold,NPG shows not only the enhanced current but also the lower overpotential of hydrazine oxidation.The electrocatalytic activities of the as prepared NPG films towards 10 mmol/L hydrazine oxidation in 0.5 mol/L NaOH solution were investigated by cyclic voltammetry(CV).At the NPG electrode,hydrazine oxidation in 0.5 mol/L NaOH took place at the potential of-0.6 V (vs SCE) and the peak of the potential was about-0.5 V (vs SCE).We found that after 30 min chemical dealloying,the NPG-30 min films showed a better electrocatalytic properties towards hydrazine(N2H4).
参考文献
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%