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This document discusses a study on dispersing graphene in aqueous solutions using different types of surfactants. The researchers found that non-ionic surfactant polyoxyethylene (40) nonylphenylether (Igepal CO890) achieved optimal graphene dispersion at 200-300 ppm, as shown by UV-vis analysis and sedimentation testing. The stable graphene suspensions were then used to produce graphene films through low-cost spray or drop coating. The graphene films had significantly lower sheet resistance than films made

Author

ary.engenharia1244

Language

EN