Abstract
Hollow carbons have emerged as a new class of porous carbon materials, showing promise in a variety of areas. However, their morphology has been limited to spherical shapes, with the carbon shell possibly limiting access to their inner surfaces and utilization. Herein, we report a new type of hollow carbon material consisting of non-spherical, adamantane-shaped, hierarchically micro- and macro-porous, N-doped carbon nanoframes (mM-NCs) by exploiting selective etching and pseudomorphic thermal conversion of zeolitic imidazolate framework-8 (ZIF-8). The mM-NCs showed superior performance as adsorbents for large dye molecules and as catalysts for the oxygen reduction reaction relative to macropore-free N-doped carbons, which can be attributed to the presence of macropores, fully utilizable pore surfaces, and nitrogen species.
Original language | English |
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Pages (from-to) | 18906-18911 |
Number of pages | 6 |
Journal | Journal of Materials Chemistry A |
Volume | 6 |
Issue number | 39 |
DOIs | |
State | Published - 2018 |
Bibliographical note
Funding Information:This work was supported by the National Research Foundation of Korea (NRF) Grant funded by the Ministry of Science and ICT (No. NRF-2016R1A5A1009405, NRF-2017R1A2B4008757, NRF-2017R1A2B2008464, and NRF-2017R1A4A1015533).
Publisher Copyright:
© 2018 The Royal Society of Chemistry.