Abstract
Porous carbons can be prepared from crystalline metal–organic frameworks (MOFs) by pyrolysis. However, MOF-derived porous carbons (denoted as MPCs) are mostly composed of microporosity, potentially causing diffusional limitation during guest transport. To overcome the potential diffusional limitation of MPCs due to pore size constraints, secondary meso- or macropores need to be introduced in the MPCs. Our strategy is to granulize MOF-808 nanoparticles via spray drying, followed by pyrolysis and HF etching, yielding MPC granules with a bimodal micro-mesoporous structure, in which the micropores originate from intrinsic pores of MOF-808 and the mesopores stem from interparticle spaces between assembled MOF-808 particles.
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The datasets generated during and/or analyzed during the current study are available from the corresponding authors on reasonable request.
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Acknowledgments
This work was supported by the National Research Foundation (NRF) of Korea funded by the Ministry of Science and ICT, Republic of Korea (NRF-2019R1A2C1090693, NRF-2021R1A5A6002853, and NRF-2020R1C1C1013869).
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Kim, Y.R., Jeong, J.Y., Lim, S.m. et al. MOF-808-derived carbon granules with a bimodal micro-mesoporous structure. MRS Communications 13, 70–74 (2023). https://doi.org/10.1557/s43579-022-00313-2
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DOI: https://doi.org/10.1557/s43579-022-00313-2