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Open AccessCommunication

Zeolite-Assisted Shear Exfoliation of Graphite into Few-Layer Graphene

1
Physics Research Group, Faculty of Science, Escuela Superior Politécnica de Chimborazo, Riobamba EC060155, Ecuador
2
Research Institute on Membrane Technology (ITM-CNR), Cubo 17C, I-87036 University of Calabria, 87100 Cosenza, Italy
3
Surface Nanoscience Group, Department of Physics, University of Calabria, Via P. Bucci, Cubo 33C, I-87036 Rende, Italy
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GraphenTech NL, Olympiaweg 28A, 3077AL Rotterdam, The Netherlands
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Faculty of Mechanical Engineering, Escuela Superior Politécnica de Chimborazo, Riobamba EC060155, Ecuador
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Faculty of Computing and Electronic, Escuela Superior Politécnica de Chimborazo, Riobamba EC060155, Ecuador
7
Department of Biology, Ecology and Earth Sciences, University of Calabria, Via Pietro Bucci, I-87036 Rende, Italy
*
Author to whom correspondence should be addressed.
Crystals 2019, 9(8), 377; https://doi.org/10.3390/cryst9080377
Received: 1 July 2019 / Revised: 18 July 2019 / Accepted: 19 July 2019 / Published: 24 July 2019
A novel method is presented to prepare few-layer graphene (FLG) in N-methyl-2-pyrrolidinone (NMP) by using a simple, low-cost and energy-effective shear exfoliation assisted by zeolite and using a cappuccino mixer to produce shear. We propose that the exfoliation of natural graphite flakes can be achieved using inelastic collisions between graphite flakes and zeolite particles in a dynamic colloidal fluid. To confirm the exfoliation of FLG, spectroscopy and morphological studies are carried out using Raman spectroscopy, scanning electron microscopy (SEM) and transmission electron microscopy (TEM). Additionally, the obtained graphene shows a linear flow of current and low resistance. The proposed method shows great promise for the industrial-scale synthesis of high-quality graphene with potential applications in future graphene-based devices, and furthermore, this method can be extended to exfoliate inorganic layered materials such as BN and MoS2. View Full-Text
Keywords: few-layer graphene; zeolite 4A; NMP; mixer few-layer graphene; zeolite 4A; NMP; mixer
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MDPI and ACS Style

Tubon Usca, G.; Vacacela Gomez, C.; Guevara, M.; Tene, T.; Hernandez, J.; Molina, R.; Tavolaro, A.; Miriello, D.; Caputi, L.S. Zeolite-Assisted Shear Exfoliation of Graphite into Few-Layer Graphene. Crystals 2019, 9, 377.

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