Synthesis and characterization of cobalt orthoborate nanopowders

This thesis study investigates the effects of various parameters on the production of nanosized cobalt borate (Co3(BO3)2). The synthesis of nanosized cobalt borate was successfully achieved using five different fuels—glycine, beta-alanine, 1,6-diaminohexane, carbohydrazide, and hexamethylenetetramine—through a solution combustion method. The primary aim of this research is to evaluate the potential of different fuels, as well as the effects of temperature and reaction time, to exceed standard production conditions and to analyze the structural properties of the obtained materials. During the production process, the starting materials (Co(NO₃)₂·6H₂O and H₃BO₃) and fuels were separately dissolved in pure water. The mixtures were then gelled and subjected to thermal treatment at 400°C for approximately 5-10 minutes. Following the combustion reaction, the resulting ceramic powders were reheated at 900°C for 1 hour. Characterization studies conducted using X-ray powder diffraction (XRD) and Fourier Transform Infrared Spectroscopy (FTIR) methods revealed that the production of high-purity and homogeneous nanosized cobalt borate was achieved in a very short time frame (1 hour) using the solution combustion method with all the fuels employed in this thesis.