Abstract
The most widely used type of spinel aluminate is Cobalt Aluminate (CoAl2O4). This spinel is known to have different structural, magnetic and morphological characteristics depending upon their synthesis methods and the types of materials used. A variety of fine, complex oxide powders have been produced using the Solution Combustion Method (SC), which is employed for advanced applications such as catalysts, fuel cells and in biotechnology. In the current study, COAl2O4 nano-particles was prepared using the solution combustion technique. Various temperatures used to heat the samples at 500 °C, 700 °C and 900 °C in order to understand various properties of the materials with different annealing temperatures. Using XRD, SEM, EDAX and FT-IR the structural, morphological and compositional properties of the materials were analysed in this paper. XRD confirmed that the obtained metal oxides are COAl2O4 and these oxides crystalline sizes were calculated using Scherrer equation. Metal oxide structures were confirmed by FT-IR. On comparing the three samples, the sample annealed at 900 °C showed good UV–Vis absorption and also it proves to be a suitable choice for the degradation of organic dyes.
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