科研之友
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摘要
Multilayer nanoporous Ti/TiO2 films were obtained by controlling electro-oxidation potentials in a sulfuric acid solution. After etching in a dilute hydrogen fluoride solution, the porous layers were deposited and intercalated with Pt and Pt-Ru to form Ti/TiO2-Pt and Ti/TiO2-PtRu electrodes by using the cyclic voltammetric method. An electron diffraction spectroscopy was used to examine the electrode surface structure. The catalytic activity of the electrodes for electro-oxidation of coal shows that the multilayer nanoporous Ti/TiO2-Pt structure improves the electrode performance in comparison to a pure Pt electrode and a Pt coated Ti electrode. The Ti/TiO2-Pt-Ru (1: 2) electrode shows even better catalytic activity than the Ti/TiO2-Pt. Anode gas analysis shows that the coal electro-oxidation produces mainly CO2 with trace amount of CO and the cathode gas is pure hydrogen. We also observed some lower hydrocarbon by-products, such as methane. The amount of CO2 is only similar to 10% of the amount of H-2 produced.
- 出版日期2007
- 单位上海大学
