Rapid Access to Ordered Mesoporous Carbons for Chemical Hydrogen Storage

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

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-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 NaAlH4, where remarkable improvement in hydrogen desorption kinetics was observed. The state-of-the-art lowest activation energy of dehydrogenation as a single step was attributed to their ordered pore structure and N-doping effect.

Original languageEnglish
Pages (from-to)22478-22486
Number of pages9
JournalAngewandte Chemie - International Edition
Volume60
Issue number41
Early online date7 Sep 2021
DOIs
Publication statusPublished - 4 Oct 2021
MoE publication typeA1 Journal article-refereed

Keywords

  • hard template synthesis
  • hydrogen storage
  • microwave heating
  • nanoconfinement
  • nitrogen doped carbon

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