Forming ceria shell on Au-core by LSPR photothermal induced interface reaction

- Au@CeO2 precursor NPs were fabricated by LSPR-photothermal effect.
- The shell formation mechanism was proposed.
- The shell formation reactions are confined on the surface of metal core.
- The shell can disperse and stabilize the metal core during loading and calcination.
- The encapsulation method can be extended to plasmonic metal@shell formed by heating.