Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/157085
Title: Ultrafast crystallization of ordered mesoporous metal oxides and carbon from block copolymer self-assembly and joule heating
Authors: Wang, Leyan
Seah, Geok Leng
Li, Yun
Tu, Wei Han
Manalastas, William, Jr.
Reavley, Matthew J.-H.
Corcoran, Edward W., Jr.
Usadi, Adam K.
Du, Zehui
Madhavi, Srinivasan
McConnachie, Jonathan M.
Ong, Hock Guan
Tan, Kwan Wee
Keywords: Engineering::Materials::Nanostructured materials
Engineering::Materials::Composite materials
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 
NRFI2017-08 
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
Appears in Collections:ERI@N Journal Articles
MSE Journal Articles
TL Journal Articles

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