Preparation of Au Core-shell Nano-catalyst and Its Catalytic Performance

Au core-shell nano-catalyst with excellent catalytic performance was prepared by electroless plating technology,and the diameter of Au particles on the surface was around 16 nm with a narrow distribution.The influence of adding order of complexing agent and reducing agent on the catalytic performance was investigated by SEM,UV-Vis spectrometer,and guantity of H2 production in the progress of the catalytic reaction.It was found that the sample prepared with the order of adding complexing agent first showed the highest reaction rates,H2 production,and catalytic activity.The higher loading and surface roughness of Au nanoparticles were responsible for the excellent catalytic performance of the Au core-shell nano-catalyst.