Akademik Veri Yönetim Sistemi
JOURNAL OF THE FACULTY OF ENGINEERING AND ARCHITECTURE OF GAZI UNIVERSITY, cilt.40, sa.2, ss.1371-1384, 2025 (SCI-Expanded, Scopus, TRDizin)
Studies on the synthesis of graphene oxide by the Hummers method and the synthesis of reduced graphene oxide by the chemical reduction method are gradually increasing due to the increasing use of researchers in the study of graphene oxide and reduced graphene oxide. In this study, a different approach to the synthesis of graphene oxide and reduced graphene oxide was discussed. In the study, a cyclic approach in hummers and the chemical reduction method are discussed. In the cyclic approach, it was aimed to evaluate the performance of chemicals by using sodium boron hydride at the chemical reduction stage. In the first stage, graphene oxide was synthesized from graphite using the modified hummers method. The synthesized graphene oxide was reduced by sodium boron hydride cycle. Graphene oxide synthesized by the Hummers method and reduction by sodium boron hydrate formed the first cycle for this study. This process was repeated 4 times to create a loop, taking into account the differences between the loops. The quality criteria determined for graphene oxide and reduced graphene oxide with the cyclic approach are the ratio of D peak intensity to G peak intensity (D/G), surface area measurement (YA-m2/g/), average particle size (PB-nm) and zeta, respectively. potential (ZP-mv) and atomic ratio of carbon to oxygen (C/O) were selected. The improvement rates from the quality criteria selected in the cyclical approach were- 20.69% with RGO-B2 for D/G,-10.15% with GO-B3 for C/O, 63.72% with RGO-B4 for PB, 3.93% with GO-B2 for ZP and 599.06% with GO-B3 for YA.