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Synthesis and Characterization of Ruthenium-Titanium Composite Oxide and a Platinum Catalyst Supported on It

✍ Scribed by Aiping WANG; Haibo XU; Yonghong LU; Jiezhen HU; Xiangfeng KONG; Binglun TIAN; Hui DONG

Publisher
Elsevier Science
Year
2009
Weight
591 KB
Volume
30
Category
Article
ISSN
1872-2067

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✦ Synopsis

Ru 0.1 Ti 0.9 O 2 nanopowder was synthesized from TiN nanoparticles and RuCl 3 precursors by the impregnation-thermal decomposition method. A supported Pt/Ru 0.1 Ti 0.9 O 2 electrocatalyst was prepared using this as the support by solid phase synthesis. X-ray diffraction and transmission electron microscopy results indicate that RuO 2 and TiO 2 formed a binary solid solution with rutile phase. Pt nanoparticles were deposited uniformly on the surface of the solid solution. Pt/Ru 0.1 Ti 0.9 O 2 showed good electrocatalytic properties as characterized by hydrogen and oxygen evolution in the polarization curves measured in 0.5 mol/L H 2 SO 4 . This was due to a synergistic effect between Pt and Ru 0.1 Ti 0.9 O 2 . Pt/Ru 0.1 Ti 0.9 O 2 also showed high electrocatalytic activity in oxygen reduction as a proton exchange membrane fuel cell cathodic catalyst. Pt/Ru 0.1 Ti 0.9 O 2 showed much better stability than Pt/C in an anti-polarization experiment.

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