Nitrogen-Doped Porous Carbon Matrix Derived from Metal-Organic Framework-Supported Pt Nanoparticles with Enhanced Oxygen Reduction Activity

被引:9
作者
Gu, Wenling [1 ,2 ]
Shang, Changshuai [1 ,2 ]
Li, Jing [1 ]
Wang, Erkang [1 ]
机构
[1] Chinese Acad Sci, State Key Lab Electroanalyt Chem, Changchun Inst Appl Chem, Changchun 130022, Jilin, Peoples R China
[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
基金
中国国家自然科学基金;
关键词
electrocatalysts; metal-organic frameworks; oxygen reduction reaction; porous materials; Pt nanoparticles; FUEL-CELLS; PLATINUM NANOPARTICLES; CATALYST SUPPORTS; SURFACE-AREA; PT-ALLOY; ELECTROCATALYSTS; DURABILITY; COMPOSITES; NANOFIBERS; EXCELLENT;
D O I
10.1002/celc.201700632
中图分类号
O646 [电化学、电解、磁化学];
学科分类号
081704 ;
摘要
Herein, a porous nitrogen-doped carbon material (NH2-MIL-101-C) derived from the metal-organic frameworks (MOFs) of NH2-MIL-101 ([Fe3OX(NH2-BDC)(3)](n), X: OH, NH2-BDC: 2-aminoterephthalic acid) is applied as a corrosion-resistant support matrix for the growth of Pt nanoparticles (NH2-MIL-101-C@Pt). The Pt nanoparticles could be uniformly and steadily deposited on the porous carbon support matrix, owing to their strong interactions, which effectively inhibited agglomeration of the nanoparticles. NH2-MIL-101-C@Pt is tested for the possible factors as an excellent oxygen reduction reaction (ORR) catalyst in basic medium. Compared to the commercial Pt/C catalyst, enhanced ORR activity and greater long-time durability is obtained when using the NH2-MIL-101-C@Pt catalyst. In addition, it is proved that the enhanced activity should be ascribed to the alternate local electron density of Pt in the NH2-MIL-101-C@Pt catalyst, which convincingly change the d-band center of Pt compared to the Fermi level and promotes faster ORR kinetics.
引用
收藏
页码:2814 / 2818
页数:5
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