Nano-inclusion in one step: spontaneous ice-templating of porous hierarchical nanocomposites for selective hydrogen release

Champet, S., van den Berg, J., Szczesny, R., Godula-Jopek, A. and Gregory, D. (2019) Nano-inclusion in one step: spontaneous ice-templating of porous hierarchical nanocomposites for selective hydrogen release. Sustainable Energy and Fuels, 3, pp. 396-400. (doi: 10.1039/C8SE00526E)

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Abstract

3-Dimensional porous scaffold materials can be fabricated by ice templating sheets of graphene oxide (GO) or partially reduced graphene oxide (rGO). Aqueous suspensions of GO (or rGO) can be cast into monoliths or formed as beads on cooling and the solid matrices then fashioned with either laminar or radial porosity as result. Further, ammonia borane (AB) can be integrated into the hierarchical structures in situ in a one-step process without the requirement of melt infiltration or solution impregnation techniques. Compared to AB itself, the ensuing self-assembled beads release hydrogen at a reduced onset temperature and without volume expansion on heating, suppressing the release of diborane, borazine and ammonia. Pre-reduction of the GO matrix material (to rGO) eliminates CO/CO2 release from the composites.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:CHAMPET, Simon and Szczesny, Dr Robert and Gregory, Professor Duncan
Authors: Champet, S., van den Berg, J., Szczesny, R., Godula-Jopek, A., and Gregory, D.
College/School:College of Science and Engineering > School of Chemistry
Journal Name:Sustainable Energy and Fuels
Publisher:Royal Society of Chemistry
ISSN:2398-4902
ISSN (Online):2398-4902
Published Online:07 January 2019
Copyright Holders:Copyright © 2019 The Royal Society of Chemistry
First Published:First published in Sustainable Energy and Fuels 3:396-400
Publisher Policy:Reproduced under a Creative Commons license

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