3 years ago

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

Nitrogen-Doped Porous Carbon Matrix Derived from Metal-Organic Framework-Supported Pt Nanoparticles with Enhanced Oxygen Reduction Activity
Erkang Wang, Wenling Gu, Jing Li, Changshuai Shang
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. Hard to resist: A porous nitrogen-doped carbon matrix of NH2-MIL-101-C, derived from the NH2-MIL-101 precursor, is applied as a corrosion-resistant support matrix for the targeted growth of Pt nanoparticles. The oxygen reduction reaction activity in basic medium is subsequently explored, and the enhanced mass activity and specific activity of the catalyst relative to the commercial Pt/C catalyst gives promise for practical alkaline fuel cell applications.

Publisher URL: http://onlinelibrary.wiley.com/resolve/doi

DOI: 10.1002/celc.201700632

You might also like
Discover & Discuss Important Research

Keeping up-to-date with research can feel impossible, with papers being published faster than you'll ever be able to read them. That's where Researcher comes in: we're simplifying discovery and making important discussions happen. With over 19,000 sources, including peer-reviewed journals, preprints, blogs, universities, podcasts and Live events across 10 research areas, you'll never miss what's important to you. It's like social media, but better. Oh, and we should mention - it's free.

  • Download from Google Play
  • Download from App Store
  • Download from AppInChina

Researcher displays publicly available abstracts and doesn’t host any full article content. If the content is open access, we will direct clicks from the abstracts to the publisher website and display the PDF copy on our platform. Clicks to view the full text will be directed to the publisher website, where only users with subscriptions or access through their institution are able to view the full article.