Affiliation:
1. National scientific laboratory of collective use S.Amanzholov East Kazakhstan University 18/1 Kanipa Bitibaeva str. 070002 Ust-Kamenogorsk Kazakhstan
2. National Nanotechnology Laboratory of Open Type al-Farabi Kazakh National University al-Farabi Avenue 71 050040 Almaty Kazakhstan
3. Department of Physics School of Sciences and Humanities Nazarbayev University Kabanbay Batyr Avenue 53 010000 Astana Kazakhstan
Abstract
AbstractThe properties of pure graphene and reduced graphene oxide (RGO) are close, so thermal annealing is a simple, safe and more cost‐effective alternative, in comparison to other methods to produce graphene oxide (GO) on a significant scale. In this work, for the first time, for the production of GO and its membrane with subsequent thermal reduction, local Kazakhstan “Ognevsky” graphite was used as the initial raw material. The GO membrane was obtained by vacuum filtration and subjected to thermal annealing at various temperatures in a hydrogen atmosphere. It was noticed, that after the thermal recovery of GO membranes, their physical and chemical properties changed. This changes show the possibility of using GO new membranes as a potential material for sensitive elements, such kind of gas and humidity sensors. In this regard, GO and RGO membranes were studied by: SEM, EDX, FTIR, XRD, TGA and Raman spectroscopy. This work demonstrates a new and efficient strategy for manufacturing high performance RGO membranes from local raw materials.