Multivalent cation crosslinking suppresses highly energetic graphene oxide’s flammability
Abstract
Graphene oxide (GO), a common intermediate for making graphene-like materials from graphite, was recently found to possess an explosive fire-hazard that can jeopardize the GO’s large-scale production and wide applications. This work reports a simple and facile method to cross-link the GO with Al3+ cations, in one step, into a freestanding flexible membrane. This inorganic membrane resists in-air burning on an open-flame, at which non-cross-linked GO was burnt out within ~5 seconds. All characterization data suggested that the in-situ “epoxy ring opening” reactions on GO surface facilitated the cross-linking, which elucidated a new mechanism for the generalized inorganic polymerization. With the much improved thermal- and water-stabilities, the cross-linked GO-film can help to advance high-temperature fuel-cells, electronic packaging, etc. as one of the long-sought inorganic polymers known to date.
Citation
Turgut , H , Tian , Z R , Yu , F & Zhou , W 2017 , ' Multivalent cation crosslinking suppresses highly energetic graphene oxide’s flammability ' , Journal of Physical Chemistry C , vol. 121 , no. 10 , pp. 5829-5835 . https://doi.org/10.1021/acs.jpcc.6b13043
Publication
Journal of Physical Chemistry C
Status
Peer reviewed
ISSN
1932-7447Type
Journal article
Description
The authors acknowledges National Science Foundation- Experimental Program to Stimulate Competitive Research (NSF-EPSCoR) for partial support, Prof. S. Yu’s lab for the micro-Raman experiments, and Dr. Jingyi Chen’s lab for the TGA study.Collections
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