The Nanocrystalline Nickel with Catalytic Properties on Methanol Oxidation in Alkaline Medium
β Scribed by R. M. A. Tehrani; S. Ab Ghani
- Publisher
- John Wiley and Sons
- Year
- 2009
- Tongue
- English
- Weight
- 454 KB
- Volume
- 9
- Category
- Article
- ISSN
- 1615-6846
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β¦ Synopsis
Abstract
The hexagonal closed packed (hcp) nanocrystalline nickel (Ni), with an average diameter of 9.7βΒ±β2.27βnm was deposited uniformly on composite graphite (CG) by the rapid scanning (6,500βmVs^β1^) voltammetry technique. The hcpβnano Niβmodified CG electrode was investigated for the catalytic oxidation of methanol in alkaline medium through the formation of NiOOH. A high anodic current was obtained at peak potential of +570βmV vs Ag/AgCl. Both the scan rate and the methanol concentration affected the oxidation of methanol. The results showed that catalytic activity had increased with decrease in Ni particle diameter. It was also shown that the hcpβnano Ni/CG modified electrode was the most efficient catalyst in the oxidation of methanol.
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