A comparative study on few-layer graphene production by exfoliation of different starting materials in a low boiling point solventReport as inadecuate




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1 CIRIMAT - Centre interuniversitaire de recherche et d-ingenierie des matériaux 2 Anadolu University TURKEY

Abstract : Three different graphite-based powders expandable graphite and two different nano-graphite powders were investigated as starting materials for an effective liquid phase exfoliation process in isopropyl alcohol IPA. The prepared dispersions were analyzed and compared in terms of their graphene concentration, stability, number of graphene layers and quality, as well as the electrical conductivity of the prepared graphene-based materials. Good quality graphene dispersions ID-IG < 0.3 with a relatively high concentration ∼1.1 mg-ml were prepared in IPA within 90 min sonication time by utilizing a high specific surface area ∼175 m2-g nano-graphite powder derived from natural graphite. Transmission electron microscope analyses of this sample revealed mostly folded and scrolled few layer graphene FLG sheets



Author: Yasemin Çelik - Emmanuel Flahaut - Ender Suvacı -

Source: https://hal.archives-ouvertes.fr/



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