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Citation: ZHANG Wenbin, ZHANG Zhangcai. Electrocatalytic Oxidation of Ethanol Using Porous Nickel Prepared by Hydrogen Bubble Template[J]. Chinese Journal of Applied Chemistry, ;2015, 32(10): 1177-1183. doi: 10.11944/j.issn.1000-0518.2015.10.150087 shu

Electrocatalytic Oxidation of Ethanol Using Porous Nickel Prepared by Hydrogen Bubble Template

ZHANG Wenbin ^a,b,, ,
ZHANG Zhangcai ^a

1.
a College of Chemistry and Bio-engineering, Yichun University, Yichun, Jiangxi 336000, China;
2.
b Engineering Center of Jiangxi University for Lithium Energy, Yichun, Jiangxi 336000, China

Corresponding author: ZHANG Wenbin,
Received Date: 9 March 2015
Available Online: 4 May 2015
Fund Project: 国家自然科学基金(21303158) (21303158)江西省教育厅科学技术研究项目(赣教技字12701号)资助 (赣教技字12701号)

Porous nickel was electrodeposited by the reduction of nickel ions with the evolution of hydrogen bubble in aqueous solution.This material shows outstanding performance for electrocatalytic oxidation of ethanol in a strong base solution.Quasi-reversible proton coupled electron transfer reaction between β-Ni (OH)₂ and β-Ni OOH is observed for porous nickel in 1 mol/L KOH solution.From the cyclic voltammograms,a linear relationship between peak current density and square root of potential scan rate is obtained.Based on this relationship,proton diffusion coefficient is calculated to be 2.92×10^-8 cm²/s for porous nickel,which is four order of magnitude higher than that for bulk nickel due to the increased real surface area.Cyclic voltammetry and chronoamperometry have been used to characterize the electrocatalytic oxidation ability of porous nickel toward ethanol.In comparison to Ni (220),porous nickel gives a higher catalytic efficiency.The catalytic reaction rate constant is measured to be 7.17×10³ cm³/(mol·s) by chronoamperometry.
- hydrogen bubble template method,
- porous nickel,
- electrocatalytic oxidation,
- ethanol
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