Couroupita guianensis Induced Facial Synthesis of Silver and Gold Nanoparticles and its Antimicrobial Property on Impregnated Cotton Fabric
This paper explores the novel approach towards bio-reduction using Couroupita guianensis flower extract as a reducing and stabilizing agent in the synthesis of silver and gold nanoparticles. The experiments were conducted at a constant temperature of [Formula: see text]C. The surface plasmon resonance band of silver and gold nanoparticles occurred at 420[Formula: see text]nm and 540[Formula: see text]nm, respectively. The investigation proved that the formation of silver nanoparticle started within 7[Formula: see text]min and it was completed at end of 6[Formula: see text]h, while in the case of gold nanoparticles the reaction completed in 5.30[Formula: see text]h. The characterization of the formed nanoparticles was performed using transmission electron microscope, zeta potential and x-ray diffraction studies. The size of the silver and gold nanoparticles ranged between 10[Formula: see text]nm and 18[Formula: see text]nm and 5[Formula: see text]nm and 28[Formula: see text]nm, respectively. The effectiveness of cotton fabric impregnated with silver and gold nanoparticles was tested against Escherichia coli and Staphylococcus aureus.