Microwave Assisted Green Synthesis of Gold Nanoparticles Using Bougainvillea glabra Leaf Extract

摘要

Bougainvillea glabra has excellent antimicrobial property and it has good glucose tolerance and significantly reduced intestinal glucosidase activity, with regeneration of insulin-producing cells and increase in plasma insulin. A novel technique for biosynthesis of gold nanoparticles (GNPs) using B. glabra as a reductant and offers a green route for the synthesis of GNPs. The synthesized GNPs are characterized by UV-visible spectrophotometer, TEM, EDAX, FTIR and XRD. The synthesized GNPs were mostly oval in shape and the average diameter of GNPs was about 25.71 nm. Energy dispersive X-ray (EDAX) spectrometer confirmed the presence of elemental gold signal of gold nanoparticles. The nanoparticles are found to be highly crystalline as evidenced by the peaks in XRD pattern corresponding to Bragg reflections from (111), (2 0 0), (2 2 0) and (3 11) planes of the fcc structure.