Next Article in Journal
Synergistic Path for Dual Anisotropic and Electrically Switchable Emission From a Nanocomposite of CsPbBr3 Quantum Cuboids and Nematic Liquid Crystal
Next Article in Special Issue
All-Inorganic Red-Light Emitting Diodes Based on Silicon Quantum Dots
Previous Article in Journal
Quality Control and Structural Assessment of Anisotropic Scintillating Crystals
Previous Article in Special Issue
Growth of Multi-Layer hBN on Ni(111) Substrates via MOCVD
Article Menu

Export Article

Open AccessCommunication

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

Physics Research Group, Faculty of Science, Escuela Superior Politécnica de Chimborazo, Riobamba EC060155, Ecuador
Research Institute on Membrane Technology (ITM-CNR), Cubo 17C, I-87036 University of Calabria, 87100 Cosenza, Italy
Surface Nanoscience Group, Department of Physics, University of Calabria, Via P. Bucci, Cubo 33C, I-87036 Rende, Italy
GraphenTech NL, Olympiaweg 28A, 3077AL Rotterdam, The Netherlands
Faculty of Mechanical Engineering, Escuela Superior Politécnica de Chimborazo, Riobamba EC060155, Ecuador
Faculty of Computing and Electronic, Escuela Superior Politécnica de Chimborazo, Riobamba EC060155, Ecuador
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;
Received: 1 July 2019 / Revised: 18 July 2019 / Accepted: 19 July 2019 / Published: 24 July 2019
PDF [2733 KB, uploaded 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

Graphical abstract

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

Supplementary material


Share & Cite This Article

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.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics



[Return to top]
Crystals EISSN 2073-4352 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top