Biosynthesis of Flower-Shaped CuO Nanostructures and Their Photocatalytic and Antibacterial Activities

Copper oxide nanoflowers(Cu O-NFs) have been synthesized through a novel green route using Tulsi leaves-extracted eugenol(4-allyl-2-methoxyphenol) as reducing agent. Characterizations results reveal the growth of crystalline singlephase CuO-NFs with monoclinic structure. The prepared Cu O-NFs can e ectively degrade methylene blue with 90% efficiency. They also show strong barrieragainst E. coli(27 ± 2 mm) at the concentration of 100 μg m L-1, while at the concentration of 25 μg m L-1 weak barrier has been found against all examined bacterial organisms. The results provide important evidence that Cu O-NFs have sustainable performance in methylene blue degradation as well as bacterial organisms.