High performance graphene-melamine sponge prepared via eco-friendly and cost-effective process
An eco-friendly and cost-effective preparation process for high performance graphene-melamine sponge is reported in this article. Different from traditional preparation process through two steps including dip-coating graphene oxide on sponge skeletons and reducing graphene oxide to graphene, a new process has been developed in this work that the coating and reducing of graphene oxide can be carried out simultaneously in a one-pot hydrothermal reaction with suitable concentration of graphene oxide aqueous dispersion. The eco-friendly reduction agent water-soluble ascorbic acid instead of toxic hydrazine hydrate works efficiently in this process. The as prepared superhydrophobic and superoleophilic graphene-melamine sponge exhibits high adsorption capacity for various oils and organic solvents and excellent selective adsorption performance for pump oil and chloroform. Therefore, the prepared graphene-melamine sponge is a cost-effective and environmental friendly material which certainly can find applications in polluted water treatment.
KeywordsGraphene-melamine sponge Eco-friendly Superhydrophobic Oil and water separation Flame retardancy Nanomaterials
This work was financially supported by the Ph.D. Programs Foundation of SINOPEC Beijing Research Institute of Chemical Industry.
Compliance with ethical standards
The authors declare that they have no competing interest.
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