A simple microemulsion based method for the synthesis of gold nanoparticles

摘要

The production of gold nanoparticles and nanoplates by enzymatically-synthesized lauroyl glucose, lauroyl fructose and lauroyl ascorbate is described. These emulsifiers formed oil-in-water microemulsions with toluene and the available reducing groups brought about a rapid reduction of chloroauric acid (HAuCI_4). Gold nanoparticles could thus be synthesized without the use of an additional reducing agent. Optical images, UV-visible spectroscopy, scanning electron microscopy, energy dispersive spectra (SEM-EDS) and X-ray diffraction (XRD) analysis revealed the presence of gold nanoparticles, which on further incubation aggregated into nanoplates. This paper thus describes a novel application of the enzymatically-synthesized esters.