Abstract
Herein, we have described one pot synthesis of Cu2OZnO nanocomposites via green route using Callistemon viminalis aqueous leaf extract first for antimicrobial applications and facile synthesis of phenyl xanthenedione. FTIR spectroscopic study of Cu2O-ZnO NCs was carried out to confirm bioreduction of copper and zinc ions by biomolecules present in leaf extract. Elemental composition was detected by Energy Dispersive X-ray spectral study whereas powder XRD analysis revealed nanosize and lattice interaction in the bimetallic composite. Biosynthesized nanocomposites were also screened by SEM, TEM and TGA/DTA techniques. Purity and presence of oxides of copper and zinc in the product had been investigated by X-ray Photoelectron spectroscopy (XPS). Furthermore, synergistic effect of copper and zinc was examined by comparing antimicrobial (against S.aureus, P.aeruginosa and Candida albicans) and catalytic activity (for Phenylxanthenedione synthesis) of Cu2O-ZnO nanocomposites with that of Cu2O nanoparticles. The results indicate that Cu2O-ZnO nanocomposites possess more potential as compared to Cu2O nanoparticles.
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