Bottom-up Formation of Carbon-Based Structures with Multilevel Hierarchy from MOF-Guest Polyhedra.
Journal of the American Chemical Society
American Chemical Society (ACS)
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Wang, T., Kim, H., Liu, Y., Li, W., Griffiths, J., Wu, Y., Laha, S., et al. (2018). Bottom-up Formation of Carbon-Based Structures with Multilevel Hierarchy from MOF-Guest Polyhedra.. Journal of the American Chemical Society, 140 (19), 6130-6136. https://doi.org/10.1021/jacs.8b02411
3D carbon-based structures have proven useful for tailoring material properties in structural mechanical and energy storage applications. One approach to obtain them has been by carbonization of selected metal-organic frameworks (MOFs) with catalytic metals, but this is not applicable to most common MOF structures. Here, we present a strategy to transform common MOFs, by guest inclusions and high-temperature MOF-guest interactions, into complex carbon-based, diatom-like, hierarchical structures (named for the morphological similarities with the naturally-existing dia-tomaceous species). As an example, we introduce metal salt guests into HKUST-1-type MOFs to generate a family of carbon-based nano-diatoms with two-to-four levels of structural hierarchy. We report control of the morphology by simple changes in the chemistry of the MOF and guest, with implications for the formation mechanisms. We demonstrate that one of these structures has unique advantages as a fast-charging Li-ion battery (LiB) anode. The tunability of composition should enable further studies of reaction mechanisms and result in the growth of a myriad of unprecedented carbon-based structures from the enormous variety of currently-available MOF-guest candidates.
The project was funded through a European Research Council (ERC) grant to S.K.S. (grant number: EMATTER 280078). A.K.C. and Y.W. thank the Ras Al Khaimah Center for Advanced Materials (RAK-CAM). T.W. thanks the China Scholarship Council (CSC) for funding and EPSRC Centre for Doctoral Training in Sensor Technologies and Applications (EP/L015889/1 and 1566990) for support. W.L. acknowledges the EPSRC grants (EP/L011700/1 and EP/N004272/1). Financial support by the Max Planck Society is gratefully acknowledged. K.D.F. acknowledges support from the Winston Churchill Foundation of the United States. C.Y. thanks the Cambridge Commonwealth, European and International Trust for funding.
European Research Council (280078)
External DOI: https://doi.org/10.1021/jacs.8b02411
This record's URL: https://www.repository.cam.ac.uk/handle/1810/278690
Attribution 4.0 International
Licence URL: http://creativecommons.org/licenses/by/4.0/
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