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@article{ART002959002},
author={Kumar Neeraj and Setshedi Katlego and Masukume Mike and Ray Suprakas Sinha},
title={Facile scalable synthesis of graphene oxide and reduced graphene oxide: comparative investigation of different reduction methods},
journal={Carbon Letters},
issn={1976-4251},
year={2022},
volume={32},
number={4},
pages={1031-1046},
doi={10.1007/s42823-022-00335-9}

TY - JOUR
AU - Kumar Neeraj
AU - Setshedi Katlego
AU - Masukume Mike
AU - Ray Suprakas Sinha
TI - Facile scalable synthesis of graphene oxide and reduced graphene oxide: comparative investigation of different reduction methods
JO - Carbon Letters
PY - 2022
VL - 32
IS - 4
PB - Korean Carbon Society
SP - 1031
EP - 1046
SN - 1976-4251
AB - As frontier materials, graphene oxide (GO) and graphene have penetrated almost all research areas and advanced numerous technologies in sensing, electronics, energy storage, catalysis, water treatment, advanced composites, biomedical, and more. However, the affordable large-scale synthesis of high-quality GO and graphene remains a significant challenge that negatively affects its commercialisation. In this article, firstly, a simple, scalable approach was demonstrated to synthesise high-quality, high yield GO by modifying the improved Hummers method. The advantages of the optimised process are reduced oxidation time, straightforward washing steps without using coagulation step, reduction in cost as eliminating the use of phosphoric acid, use of minimum chemical reagents, and increased production of GO per batch (~ 62 g). Subsequently, the produced GO was reduced to reduced graphene oxide (rGO) using three different approaches: green reduction using ascorbic acid, hydrothermal and thermal reduction techniques. The GO and rGO samples were characterised using various microscopy and spectroscopy techniques such as XRD, Raman, SEM, TEM, XPS and TGA. The rGO prepared using different methods were compared thoroughly, and it was noticed that rGO produced by ascorbic acid reduction has high quality and high yield. Furthermore, surface (surface wettability, zeta potential and surface area) and electrical properties of GO and different rGO were evaluated. The presented synthesis processes might be potentially scaled up for large-scale production of GO and rGO.
KW - Graphite oxidation Scalable production Graphene oxide reduction Graphene properties Electrical characteristics
DO - 10.1007/s42823-022-00335-9
ER -

Kumar Neeraj, Setshedi Katlego, Masukume Mike and Ray Suprakas Sinha. (2022). Facile scalable synthesis of graphene oxide and reduced graphene oxide: comparative investigation of different reduction methods. Carbon Letters, 32(4), 1031-1046.

Kumar Neeraj, Setshedi Katlego, Masukume Mike and Ray Suprakas Sinha. 2022, "Facile scalable synthesis of graphene oxide and reduced graphene oxide: comparative investigation of different reduction methods", Carbon Letters, vol.32, no.4 pp.1031-1046. Available from: doi:10.1007/s42823-022-00335-9

Kumar Neeraj, Setshedi Katlego, Masukume Mike, Ray Suprakas Sinha "Facile scalable synthesis of graphene oxide and reduced graphene oxide: comparative investigation of different reduction methods" Carbon Letters 32.4 pp.1031-1046 (2022) : 1031.

Kumar Neeraj, Setshedi Katlego, Masukume Mike, Ray Suprakas Sinha. Facile scalable synthesis of graphene oxide and reduced graphene oxide: comparative investigation of different reduction methods. 2022; 32(4), 1031-1046. Available from: doi:10.1007/s42823-022-00335-9

Kumar Neeraj, Setshedi Katlego, Masukume Mike and Ray Suprakas Sinha. "Facile scalable synthesis of graphene oxide and reduced graphene oxide: comparative investigation of different reduction methods" Carbon Letters 32, no.4 (2022) : 1031-1046.doi: 10.1007/s42823-022-00335-9

Kumar Neeraj; Setshedi Katlego; Masukume Mike; Ray Suprakas Sinha. Facile scalable synthesis of graphene oxide and reduced graphene oxide: comparative investigation of different reduction methods. Carbon Letters, 32(4), 1031-1046. doi: 10.1007/s42823-022-00335-9

Kumar Neeraj; Setshedi Katlego; Masukume Mike; Ray Suprakas Sinha. Facile scalable synthesis of graphene oxide and reduced graphene oxide: comparative investigation of different reduction methods. Carbon Letters. 2022; 32(4) 1031-1046. doi: 10.1007/s42823-022-00335-9

Kumar Neeraj, Setshedi Katlego, Masukume Mike, Ray Suprakas Sinha. Facile scalable synthesis of graphene oxide and reduced graphene oxide: comparative investigation of different reduction methods. 2022; 32(4), 1031-1046. Available from: doi:10.1007/s42823-022-00335-9

Kumar Neeraj, Setshedi Katlego, Masukume Mike and Ray Suprakas Sinha. "Facile scalable synthesis of graphene oxide and reduced graphene oxide: comparative investigation of different reduction methods" Carbon Letters 32, no.4 (2022) : 1031-1046.doi: 10.1007/s42823-022-00335-9