Showing papers in "ECS Journal of Solid State Science and Technology in 2021"

Combustion Synthesis of CuO Nanomaterials: Effect of Different Fuels on the Structural, Thermal, and Optical Properties

Abstract: The combustion synthesis and the effect of different fuels on the combustion products of CuO nanomaterials are reported. The pure CuO phase combustion products were produced from hexamine, urea, and glycine as fuels, whereas fuel-like sucrose yielded nearly a single phase of CuO combustion product. The pure combustion products crystallized in a monoclinic structure with a space group, C12/c1 (15). For the mixed phases of combustion products, weight gain (102.5% - 109%) is noted > 400°C in the TG curves owing to the oxidation of Cu2O phase into CuO phase. The bandgap of the different CuO powder was in the range of 2.1 – 2.6 eV. From the NIR spectra, we conclude that the nanocrystallinty of the CuO phase plays a major role in the enhancement (~35%) of NIR reflectance owing to the difference in the fuels used. Different morphologies are observed for the different CuO combustion products obtained from hexamine, urea, and glycine as fuels.