As a kind of composite material,silica-metal core-shell particles have great potential and bright prospect in application,especially composite particles with noble metal.In this article,SiO2@Ag and SiO2@Ag@Au core-shell composite particles with uniform metal shells were successfully synthesized by electroless depositing.The effect of activation process、the speed of adding reductive agent and the concentration of plating solution on the electroless depositing process were researched.Besides,the composite par...