Electrochemical synthesis of mesoprous metal nanostructure; Application for electrocatalytic oxidation of methanol

Electrooxidation of methanol in an alkaline electrolyte has been studied on nickel foam (NF) electrode. The aim of this work was to establish the electrochemical usefulness of electrodes in alkaline fuel cells. One approach to formation of high surface area porous metal electrodes is to electrodeposit metal into nanostructured templates on 3-D scaffolds such as nickel foam. By careful control of composition and voltage thin films of mesoporous silica can be deposited onto these 3-D templates. Removal of the templating surfactant produces a very high surface area mesoporous coating. Metal can then be plated into the mesoporous silica, which, after removal of the silica, leaves a high surface area 3-D porous electrode. Electrocatalytic oxidation of methanol on the surface of the modified electrode was investigated by cyclic voltammetry method and the dependence of the oxidation current and shape of cyclic voltammograms were discussed.

کلیدواژه ها:

methanol oxidation ، nickel foam ، mesoporous silica ، modified electrode ، electrocatalysis