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Anatase phase visible-light-driven TiO_2 yolk-shell spheres with the size of ca.1-2μm have been synthesized with the combination of solvothermal and heat treatment method.XRD,SEM,TEM.XPS,and PL analysis were used to examine structure and properties of the photocatalyst.The N species and Ti~(3+) centers introduced into the as-prepared photocatalyst can enhance the visible light absorption significantly.The mesoporous shell of the prepared photocatalyst,which promotes the pollutant adsorption ability,consists of the high-reactive(001) facets dominated nanocrystals.Due to the unique structure,it is also observed that the as-prepared visible-light-driven TiO_2 yolk-shell spheres exhibit a superior photocatalytic activity for organic dyes decomposition than the well-known P25.
Anatase phase visible-light-driven TiO 2 yolk-shell spheres with the size of ca.1-2 μm have been synthesized with the combination of solvothermal and heat treatment method. XRD, SEM, TEM.XPS, and PL analysis were used to examine structure and properties of the photocatalyst. The N species and Ti ~ (3+) centers into the as-prepared photocatalyst can enhance the visible light absorption significantly. mesoporous shell of the prepared photocatalyst, which promotes the pollutant ionizing ability, consists of the high-reactive (001) facets dominated nanocrystals. Due to the unique structure, it is also also observed that the as-prepared visible-light-driven TiO 2 yolk-shell spheres exhibit a superior photocatalytic activity for organic dyes decomposition than the well-known P25 .