Preparation and characterization of nanoscale cadmium oxide using bovine serum albumin as green capping agent and its photocatalytic activity

AbstractCadmium oxide nanoparticles were synthesized in aqueous phase at 70°C using bovine serum albumin (BSA) as the capping agent. X-ray diffraction, transmission electron microscopy, thermogravimetric analysis, and Fourier transform infra red techniques were used to characterize CdO nanoparticles. The average particle sizes of CdO nanoparticles were found to be ∼14 nm. The polarity of the BSA capped CdO nanoparticles was determined using gel electrophoresis technique. The synthesized CdO nanoparticles were used as photocatalyst for methylene blue degradation. The photodegrdation of methylene blue was optimized under different reaction conditions such as catalyst loading, dye concentration, temperature, and pH. Methylene blue dye was completely decolorized in 70 min of irradiation time. CdO nanoparticles were effectively used as antibacterial agent to inhibit the growth of Escherichia coli bacteria.

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