Abstract
Gold nanoparticles supported on were prepared using the chemical vapor deposition method, and their electrocatalytic activities for methanol oxidation in acid solution were evaluated. The gold nanoparticles on were about 4 nm in diameter. The catalytic properties of such catalysts containing gold nanoparticles were studied in with 1 M by the steady-state polarization method using a conventional three-electrode cell. Steady-state currents were measured after 1000 s from the beginning of electro-oxidation at potentials from 350 to 700 mV. The catalytic activities of and were also studied for comparison. As a result, gold nanoparticles enhanced the electrocatalytic activities for methanol oxidation in the potential region below 450 mV (vs reversible hydrogen electrode) compared with the catalysts and .
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