Niobium dioxide prepared by a novel La-reduced route as a promising catalyst support for Pd towards the oxygen reduction reaction.


State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, P. R. China. [Email] [Email]


Strong electron coupling between an active center and support ensures a significant improvement in catalytic performance. Herein, niobium dioxide nanoparticles (NbO2 NPs), prepared by a facile and controllable La-reduced route for the first time, serve as a catalyst support for Pd and demonstrate superior activity toward the oxygen reduction reaction (ORR). In contrast to commercial Pd/C, Pd/NbO2 shows a positive shift of 32 mV in half-wave potential, better robustness and stronger tolerance against methanol, which are attributed to the electron transfer from NbO2 to Pd.

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