Issue 2, 2019

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

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 a 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.

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

Supplementary files

Article information

Article type
Communication
Submitted
28 okt 2018
Accepted
06 yan 2019
First published
07 yan 2019
This article is Open Access
Creative Commons BY license

Sustainable Energy Fuels, 2019,3, 396-400

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

S. Champet, J. van den Berg, R. Szczesny, A. Godula-Jopek and D. H. Gregory, Sustainable Energy Fuels, 2019, 3, 396 DOI: 10.1039/C8SE00526E

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