Experiment Research on the Sequence and Mechanism of Gold and Silver Composite Nanocrystal Synthesis

Abstract

In this experiment, the authors reviewed the principles and methods for the synthesis and characterization of gold-silver nanocrystals and proposed two possible synthesis mechanisms for Gold and Silver Composite Nanocrystals. Gold nanocrystals, silver nanocrystals, and Gold and Silver Composite Nanocrystals were prepared by the "Sodium citrate seedless method"(Turkevich Method). The products were characterized by dynamic light scattering (DLS), ultraviolet-visible light spectroscopy (UV), and scanning electron microscopy (SEM). Through comparative experiments, synthesis mechanisms behind different synthesis sequences of gold-silver nanocrystals are analyzed. Observed exotic phenomena are discussed.

Added the mechanism part and the discussion about it; Added one reference. Updated the author list, the first two authors contributed equally, and the third author is the corresponding author; This paper is in Chinese