Facile synthesis of gold nanoplates by thermally reducing AuCl_4^- with aniline

摘要

We herein report a one-step,wet-chemical approach to synthesizing gold nanoplates in large quantities via the AuCl_4^-thermal reduction process by aniline,without introducing additional capping agent or suffactant.It is found that the reduction kinetics of AuCl_4^-is greatly altered by varying the initial molar ratio of aniline to AuCl_4^-.Moreover,further investigation reveals that the in- situ formed polyaniline could serve effectively as a capping agent to preferably adsorb the{111}facets of gold crystals during a slow reduction process,directing the formation of gold nanoplates.