Progress in preparation, characterization, surface functional modification of graphene oxide: A review

Graphene oxide (GO) has become the focus of scientific research due to unique mechan-ical, optical, electrical and chemical properties. We review the synthesis approaches and formation mechanism of GO, and propose that the crucial factor to the preparation of GO is to find efficient and environmentally friendly oxidant. Various characterization techniques are introduced, and characteristics are summarized. The GO model theories are synopsized, and determining the struc-ture of GO has important influence on its surface modification and its application and development in composite materials. The interaction and reaction types between GO matrix and modified mole-cules, as well as the properties of modified products were described. In conclusion, the present chal-lenges and future research directions are presented in terms of preparation and surface functional modification for GO.& COPY; 2022 The Authors. Published by Elsevier B.V. on behalf of King Saud University.This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

Automated summary

This paper reviews the synthesis, characteristics, and applications of graphene oxide (GO), emphasizing the importance of finding efficient and environmentally friendly oxidants, as well as the influence of GO structure on surface modification and composite material applications.