Type

Journal Article

Authors

Joe McCauley
Ronan J Smith
Andrew Harvey
Claudia Backes
Keith R Paton
Jonathan Coleman
Eswaraiah Varrla

Subjects

Engineering

Topics
turbulence exfoliation production graphene commercial applications shear lab to commercial applications detergent shear rate

Turbulence-assisted shear exfoliation of graphene using household detergent and a kitchen blender (2014)

Abstract To facilitate progression from the lab to commercial applications, it will be necessary to develop simple, scalable methods to produce high quality graphene. Here we demonstrate the production of large quantities of defect-free graphene using a kitchen blender and household detergent. We have characterised the scaling of both graphene concentration and production rate with the mixing parameters: mixing time, initial graphite concentration, rotor speed and liquid volume. We find the production rate to be invariant with mixing time and to increase strongly with mixing volume, results which are important for scale-up. Even in this simple system, concentrations of up to 1 mg ml−1 and graphene masses of >500 mg can be achieved after a few hours mixing. The maximum production rate was [similar]0.15 g h−1, much higher than for standard sonication-based exfoliation methods. We demonstrate that graphene production occurs because the mean turbulent shear rate in the blender exceeds the critical shear rate for exfoliation.
Collections Ireland -> Trinity College Dublin -> RSS Feeds
Ireland -> Trinity College Dublin -> School of Physics
Ireland -> Trinity College Dublin -> Physics (Scholarly Publications)
Ireland -> Trinity College Dublin -> RSS Feeds
Ireland -> Trinity College Dublin -> Physics

Full list of authors on original publication

Joe McCauley, Ronan J Smith, Andrew Harvey, Claudia Backes, Keith R Paton, Jonathan Coleman, Eswaraiah Varrla

Experts in our system

1
Ronan J Smith
Trinity College Dublin
Total Publications: 11
 
2
Andrew Harvey
Trinity College Dublin
Total Publications: 17
 
3
Claudia Backes
Trinity College Dublin
Total Publications: 20
 
4
Jonathan Coleman
Trinity College Dublin
Total Publications: 217