A facile co-solvent strategy for preparation of graphene nanoplatelet powder: An industrially viable innovative approach |
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| Affiliation: | 1. International Advanced Research Centre for Powder Metallurgy and New Materials (ARCI), Hyderabad, 500 005, India;2. Department of Metallurgical and Materials Engineering, National Institute of Technology (NIT), Warangal, India;1. CSIR-Central Glass & Ceramic Research Institute, Kolkata, 700032, West Bengal, India;2. Institute for Materials Research (IMO), Hasselt University, 3590, Diepenbeek, Belgium;3. IMOMEC, IMEC vzw, 3590, Diepenbeek, Belgium;4. International Advanced Research Centre for Powder Metallurgy and New Materials (ARCI), Hyderabad, 500005, Telangana, India;1. Nanotechnology Research Center, Sultan Qaboos University, P.O. Box. 17, P.C. 123, Al-khoudh, Oman;2. Materials Engineering Department, Babol Noshirvani University of Technology, P.O. Box: 484, Zip code: 47148-71168, Babol, Iran;3. Petroleum and Chemical Engineering Department, College of Engineering, Sultan Qaboos University, P.O. Box. 33, Muscat, P.C. 123, Al-khoudh, Oman;4. Faculty of Civil Engineering, Babol Noshirvani University of Technology, P.O. Box: 484, post code: 47148-71167, Babol, Iran;5. Department of Physics, College of Science, Sultan Qaboos University, P.O. Box 36, P.C. 123, Muscat, Oman;6. TFT laboratory, Department of Mechanical Engineering, École de Technologie Supérieure, Montréal, QC H3C 1K3, Canada |
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| Abstract: | We report an industrially viable promising approach to produce micrometer-sized multilayer graphene nanoplatelet powder (MGNP) in a scalable quantity via microwave-assisted exfoliation of graphite (MEG) and fragmented into MGNP through liquid-phase exfoliation in the co-solvent mixture by kitchen mixer (KM). KM allows rapid delaminating MEG into MGNP by shear force dominated exfoliation. Majority of MGNPs are with a diameter of few micrometers and thickness is in nanometers. MGNP are crystalline with very limited defects was confirmed by Raman measurements and transmission electron microscopy. This process transforms, more than 86% of graphite flakes into MGNP. This advanced approach opens a new pathway to produce MGNP in bulk quantity as it is feasible, rapid, and cost-effective. |
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| Keywords: | Microwave exfoliation Multilayer graphene nanoplatelets Liquid-phase exfoliation Kitchen mixer |
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