Facile Preparation of Graphene Dots Functionalized Au Nanoparticles and Their Application as Peroxidase Mimetics in Glucose Detection

Based on the reducing property of graphene dots, we developed a facile strategy to synthesize well-stable gra- phene dots functionalized Au nanoparticles (denoted as GQD@AuNP) by one-step process at low temperature without added protecting agent. The prepared GQD@AuNP were characterized by transmission electron microscopy (TEM), X-ray photo- electron spectroscopy (XPS) and UV-vis absorption spectra. It was found that the as-prepared GQD@AuNP are...