Rapid access to ordered mesoporous carbons for chemical hydrogen storage

Uiseok Jeong, HyeonJi Kim, Sreerangappa Ramesh, Nesibe A. Dogan, Sirinapa Wongwilawan, Sungsu Kang, Jungwon Park, Eun Seon Cho, Cafer T Yavuz

Research output: Contribution to journalArticlepeer-review

Abstract

Ordered mesoporous carbon materials offer robust network of organized pores for energy storage and catalysis applications, but suffer from time-consuming and intricate preparations hindering their widespread use. Here we report a new and rapid synthetic route for a N-doped ordered mesoporous carbon structure through a preferential heating of iron oxide nanoparticles by microwaves. A nanoporous covalent organic polymer is first formed in situ covering the hard templates of assembled nanoparticles, paving the way for a long-range order in a carbonaceous nanocomposite precursor. Upon removal of the template, a well-defined cubic mesoporous carbon structure was revealed. The ordered mesoporous carbon was used in solid state hydrogen storage as a host scaffold for NaAlH 4 , where remarkable improvement in hydrogen desorption kinetics was observed. The state-of-the-art lowest activation energy of dehydrogenation as single step was attributed to their ordered pore structure and N-doping effect.
Original languageEnglish (US)
JournalAngewandte Chemie International Edition
DOIs
StatePublished - Aug 12 2021

ASJC Scopus subject areas

  • Chemistry(all)
  • Catalysis

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