Caffeine-mediated synthesis of CuO nanoparticles: characterization, morphology changes, and bactericidal activity
Angeline Pureza Mary, Afzal Ansari, R. Subramanian
Abstract
This study aims the synthesis of CuO nanoparticles using caffeine as stabilizing agent by precipitation method. The effect of caffeine on the morphology of CuO NPs was studied by varying the concentrations of caffeine. The synthesized CuO NPs were characterized using Fourier-transform infrared spectroscopy (FTIR), X-ray diffraction study (XRD) scanning electron microscopy coupled with energy-dispersive X-ray diffraction (SEM-EDAX), and transmission electron microscope with selected area diffraction (TEM-SAED). The morphological study of the nanoparticles shows that the leafy particles transformed into spherical nanoparticles at higher concentration of caffeine. The synthesized CuO NPs showed antibacterial activity against pathogenic bacteria. This research support to understand the role of caffeine in the synthesis of CuO NPs and further it could be used as material for biomedical applications.