A new route for the preparation of silver nanoshells on silica spheres, leading to the establishment of a simple, efficient and easy-to-scale-up way for the synthesis of smooth silver nanoshells on silica monodispersed spheres, is reported through transforming the silver oxide shell to zero-valence silver by thermal cracking, applying surface strain theory to alter the shape of core-metal shell colloidal and form smooth metal nanoshell in hot inert flowing liquid. SEM images show that the silver nanoshells may be formed at 130 ℃ and deformed at 180 ℃ in hot inert flowing liquid. XRD indicates the formation of cubic structure pure silver with high crystallinity. Also, EDX and UV diffuse reflection spectrum analyses were conducted to characterize the as-prepared samples.
