Synthesis, characterization, and thermal conductivity properties of graphene oxide doped chromium-titanium oxide structures

Authors : Serhat Koçyiğit

Pages : 78-89

Doi:10.37094/adyujsci.1564392

View : 76 | Download : 83

Publication Date : 2024-12-31

Article Type : Research Paper

Abstract :This study investigates synthesis and characterization of graphene oxide (GO) undoped and doped chromium-titanium oxide structures, along with their thermal conductivity properties in detail. The importance of low or high thermal conductivity varies depending on the intended application, and it is known that thermal conductivity, which determines which determines a material\\\'s ability to conduct heat, plays a crucial role in energy, electronics, and thermoelectric applications. Materials with low thermal conductivity are widely used in various industrial fields due to their effective heat insulation capabilities. For experimental studies, GO-undoped(T1), 1%-GO-doped(T2), and 3%-GO-doped(T3) samples were produced via the sol-gel method, followed by calcination, pelletization, and sintering processes. Characterization of these pellets was performed using X-ray Diffraction (XRD), Scanning Electron Microscopy (SEM), and Fourier Transform-Infrared Spectroscopy (FTIR). Thermal conductivity was measured using Physical Properties Measurement System (PPMS). No structural or peak changes were detected in the XRD and FTIR results, but differences in peak intensities were observed. SEM images revealed reductions in structural dimensions with GO doping, which corresponded to changes in thermal conductivity data. The thermal conductivity values of the T1, T2, and T3 samples were measured as 6.49, 3.45, and 1.50 W/K·m, respectively. These findings indicate that GO-doping reduces thermal conductivity and that differences in the material structure are significant. Additionally, it was observed that reducing the structure to the nanoscale also led to a decrease in thermal conductivity. These materials could play an important role in developing next-generation material designs.
Keywords : Krom oksit, Grafen oksit, Sol-jel, Termal iletkenlik, Titanyum oksit

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