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

Chong Huang; Wujie Dong; Chenlong Dong; Xin Wang; Bingquan Jia; Fuqiang Huang

doi:10.1039/c9dt04570h

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

Dalton Trans. 2020 Feb 7;49(5):1398-1402. doi: 10.1039/c9dt04570h. Epub 2020 Jan 17.

Authors

Chong Huang¹, Wujie Dong², Chenlong Dong³, Xin Wang⁴, Bingquan Jia¹, Fuqiang Huang⁵

Affiliations

¹ State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, P. R. China. dongwujie0219@163.com huangfq@mail.sic.ac.cn and University of Chinese Academy of Sciences, Beijing 100049, P. R. China.
² State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, P. R. China. dongwujie0219@163.com huangfq@mail.sic.ac.cn.
³ State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P.R. China.
⁴ College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou, 450001, P. R. China.
⁵ State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, P. R. China. dongwujie0219@163.com huangfq@mail.sic.ac.cn and University of Chinese Academy of Sciences, Beijing 100049, P. R. China and State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P.R. China.

PMID: 31950938
DOI: 10.1039/c9dt04570h

Abstract

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.