Abstract

AbstractCovalent functionalization of graphene nanoparticles by autoclave, reflux‐condensation, and microwave‐assisted methods was performed. Nanofluids prepared by acidic functionalized graphene exhibit a higher dispersion stability than raw graphene. The thermal conductivity of nanofluids obtained by the microwave‐assisted method was higher than with other functionalization methods, and a signifcant maximum thermal conductivity enhancement compared to deionized water was achieved. Microwave‐assisted thermochemical synthesis is a highly effective energy‐saving method over other conventional approaches.

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