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|Title:||Ultrafast crystallization of ordered mesoporous metal oxides and carbon from block copolymer self-assembly and joule heating||Authors:||Wang, Leyan
Seah, Geok Leng
Tu, Wei Han
Manalastas, William, Jr.
Reavley, Matthew J.-H.
Corcoran, Edward W., Jr.
Usadi, Adam K.
McConnachie, Jonathan M.
Ong, Hock Guan
Tan, Kwan Wee
|Issue Date:||2022||Source:||Wang, L., Seah, G. L., Li, Y., Tu, W. H., Manalastas, W. J., Reavley, M. J., Corcoran, E. W. J., Usadi, A. K., Du, Z., Madhavi, S., McConnachie, J. M., Ong, H. G. & Tan, K. W. (2022). Ultrafast crystallization of ordered mesoporous metal oxides and carbon from block copolymer self-assembly and joule heating. Advanced Materials Interfaces. https://dx.doi.org/10.1002/admi.202200151||Project:||EM11161.TO6
|Journal:||Advanced Materials Interfaces||Abstract:||Conventional heat treatments to generate well-ordered and crystalline mesoporous oxide and carbon structures are limited by long durations and annealing temperatures that can cause mesostructural collapse. This paper describes a facile strategy coupling block copolymer-directed self-assembly with high-power Joule heating to form highly crystalline and well-ordered mesoporous oxide and carbon nanostructures within second timeframes. The combined approach is compatible with various functional self-assembled hybrid systems with a range of crystallization temperatures, generating mesoporous composites of γ-Al2O3-carbon, γ-Al2O3/MgO-carbon, and anatase-TiO2-carbon with p6mm symmetry, non-close-packed mesoporous carbon, as well as hierarchical mesoporous α-Fe2O3-carbon structures. Removing the polymer/carbon gives well-defined, highly crystalline mesoporous all-γ-Al2O3 and all-anatase-TiO2 structures. Impregnation of chloroplatinic acid followed by Joule heating yields platinum nanoparticles decorated on the channel walls of mesoporous γ-Al2O3-carbon structures. The resultant Joule-heating-induced well-ordered crystalline mesoporous oxide and oxide-carbon structures have high thermal and structural stabilities and exhibit better performances in CO2 adsorption capacity and lithium-ion batteries than conventional heat-treated counterparts. This approach represents an energy-efficient and time-saving route toward ordered porous materials with high surface area and pore accessibility for a wide range of environmental applications such as carbon sequestration, renewable energy storage, and environmental filtration.||URI:||https://hdl.handle.net/10356/157085||ISSN:||2196-7350||DOI:||10.1002/admi.202200151||Rights:||This is the peer reviewed version of the following article: Wang, L., Seah, G. L., Li, Y., Tu, W. H., Manalastas, W. J., Reavley, M. J., Corcoran, E. W. J., Usadi, A. K., Du, Z., Madhavi, S., McConnachie, J. M., Ong, H. G. & Tan, K. W. (2022). Ultrafast crystallization of ordered mesoporous metal oxides and carbon from block copolymer self-assembly and joule heating. Advanced Materials Interfaces, which has been published in final form at https://doi.org/10.1002/admi.202200151. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions.||Fulltext Permission:||embargo_20230428||Fulltext Availability:||With Fulltext|
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