Easy synthesis and characterization of high quality graphene sheets produced from mesocarbon microbeads |
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| Authors: | Ying Kong Dong-Lin Zhao Li-Zhong Bai Zeng-Min Shen |
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| Affiliation: | 1. Department of Printed Electronics Engineering, Sunchon National University, Chonnam, 57922, Republic of Korea;2. Department of Chemistry, Ulsan National Institute of Science & Technology, Ulju-gun, Ulsan, 44919, Republic of Korea;3. Faculty of Nanotechnology and Advanced Materials Engineering, Sejong University, Seoul, 143-747, Republic of Korea;1. Department of Industrial Engineering Chemistry, Chungbuk National University, 52 Nasudong-ro, Heungdeok-ku, Cheong-ju 361-763, Republic of Korea;2. PureEchem. Co. Ltd., Factory Block 2 Floor, 66-26, Songjeong-dong, Heungdeok-gu, Cheongju, Chungbuk 361-763, Republic of Korea;3. Department of Applied Chemistry, Graduate School of Science and Engineering, Yamaguchi-University, 2-16-1 Tokiwadai, Ube 755-8611, Japan;1. Department of Chemistry, Kurukshetra University, Kurukshetra 136119, Haryana, India;2. Department of Chemistry, Dr B R Ambedkar National Institute of Technology, Jalandhar 144011, Punjab, India |
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| Abstract: | An easy method of producing graphene sheets with high quality from mesocarbon microbeads (MCMBs) is demonstrated using oxidation, rapid expansion and ultrasonic treatment. Single layer graphene sheets have been successfully prepared from MCMBs through thermal exfoliation. The structure of the graphene sheets was investigated by scanning and transmission electron microscopy, Fourier transform infrared spectroscopy and Raman spectroscopy. MCMBs expanded mainly along the c-axis and formed worm-like ellipses from the original regular spherules. Exfoliation continued with the fragmentation of the pieces and produced delamination of the graphene sheets. MCMBs can be an excellent starting material for producing high quality graphene sheets with high yields, becoming an attractive raw material for industrial up-scale. |
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