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

Abstract

Abstract Herein, a porous nitrogen‐doped carbon material (NH 2 ‐MIL‐101‐C) derived from the metal‐organic frameworks (MOFs) of NH 2 ‐MIL‐101 ([Fe 3 OX(NH 2 ‐BDC) 3 ] n , X: OH, NH 2 ‐BDC: 2‐aminoterephthalic acid) is applied as a corrosion‐resistant support matrix for the growth of Pt nanoparticles (NH 2 ‐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. NH 2 ‐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 NH 2 ‐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 NH 2 ‐MIL‐101‐C@Pt catalyst, which convincingly change the d‐band center of Pt compared to the Fermi level and promotes faster ORR kinetics.