Preparation of few-layer and single-layer graphene by exfoliation of expandable graphite in supercritical N,N-dimethylformamide

Application of graphene as filler to improve thermal transport property of epoxy resin for thermal interface materials

“…The value of d is very small for the RGO ($3.1 Â 10 À9 m 2 K W À1 ) and 3DGNs ($6.3 Â 10 À9 m 2 K W À1 ) modified composites (based on our previous study, the average thicknesses of RGO is about ten-layers $3.4 nm, and the 3DGNs is assumed with three-layers structure $1 nm) [21][22][23][24] , which are much smaller than that of other carbon materials modified epoxy resin (such as CNTs $10 À8 m 2 K W À1 , black carbon >10 À6 m 2 K W À1 and NG $3.8 Â 10 À7 m 2 K W À1 ). Moreover, the obtained values are in agreement with the molecular dynamics (MD) simulations [26,[31][32][33][34].…”

“…Detailed characterizations including morphology, BET surface areas and conductivities of the prepared 3DGNs and RGO have been reported by our group elsewhere [21][22][23][24]. Fig.…”

“…The 3DGNs and RGO are prepared by CVD and chemical exfoliation-reduction process, and more details have been reported in our previous reports [21][22][23][24].…”

Preparation and photocatalytic performance of transparent titania film from monolayer titania quantum dots

“…The procedure of graphene producing in supercritical fluid was described in our previous research in detail [12]. Typically, expandable graphite powder (Qingdao Tianhe Graphite Co., Ltd., China) was added in DMF (Sinopharm Chemical Reagent Co., Ltd.) and dispersed by sonication for 15 min, and then transferred into the stainless-steel reactor.…”

Preparation, characterization, and physical properties of graphene nanosheets and films obtained from low-temperature expandable graphite

“…In addition, suitable solvents with comparable surface energies to that of graphene could enable the exfoliation of graphene layers from the outermost layers of graphite under the specific reaction conditions [23,56]. Therefore, the high efficient exfoliation of multilayer graphene results from the high density of the surface dislocations, weak interlayer attraction, and pure shear stress as well as strong DMF-graphene interaction.…”