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Citation: WANG Feng-Wu, WEI Yi-Jun, CHU Dao-Bao. Preparation and Electrocatalytical Behavior of Nanocrystalline TiO₂-Pt Electrode[J]. Chinese Journal of Applied Chemistry, ;2004, 21(4): 378-382. shu

Preparation and Electrocatalytical Behavior of Nanocrystalline TiO₂-Pt Electrode

1.
a Department of Chemistry, Huainan Normal College, Huainan 232001;
2.
b College of Chemistry and Material Science, Anhui Normal University, Wuhu

Received Date: 18 November 2003
Available Online: 26 March 2004
Fund Project: 安徽省高校自然科学基金(2003KJ295) (2003KJ295)

The high active Ti/nano-TiO₂-Pt electrode is prepared by electrochemical synthesis and electrodeposition. The electrochemical behavior of the TiO₂/nano membrane electrode, Pt electrode and Ti/nano-TiO₂-Pt electrode in H₂SO₄ solution have been studied by cyclic voltammetry. The property of Ti/nano-TiO₂-Pt electrode in oxidation of Mn²⁺ to Mn³⁺ is also studied. The results show that the Ti/nano-Pt electrode has high catalytic activity in Mn²⁺ oxidation of 1.28 V(vs. SCE) oxidation potential peak, 0.12 V negative shifted as compared with that occurrs on Pt electrode. The oxygen-releasing potential is 1.4 V, about 0.08 V higher than that of Pt electrode. The electro-catalysis property of Ti/nano-TiO₂-Pt electrode is better than that of the Pt electrode and Ti/nano electrode, it gives a average current efficiency more than 90% in non-homogeneous electrolytical oxidation of Mn²⁺ to Mn³⁺.
- nanometre TiO₂-Pt electrode,
- electrocatalysis cyclic voltammetry,
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沈阳化工大学材料科学与工程学院沈阳 110142

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Preparation and Electrocatalytical Behavior of Nanocrystalline TiO2-Pt Electrode

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Preparation and Electrocatalytical Behavior of Nanocrystalline TiO₂-Pt Electrode