Preparation of cerium and nitrogen co-doped titania hollow spheres with enhanced visible light photocatalytic performance

N,Ce-codoped titania hollow spheres were prepared using carbon spheres as template and using N,Ce-codoped titania nanoparticles as building blocks. The N,Ce-codoped titania nanoparticles were synthesized at low temperature. The prepared hollow spheres were characterized by X-ray diffraction (XRD), transmission electron microscope (TEM), X-ray photoelectron spectroscopy (XPS) and UV–Vis diffuse reflectance spectrum (DRS). The effect of N and Ce content on the physical structure and photocatalytic properties of the as-prepared hollow sphere samples was investigated. The mechanism of photocatalytic degradation of dyes under visible light irradiation was also discussed.

N,Ce-codoped titania hollow spheres were prepared using carbon spheres as template and N,Ce-codoped titania nanoparticles as building blocks. The obtained samples showed high visible light photocatalytic performance.TEM image of the as-prepared N–Ce codoped titania spheresFigure optionsDownload as PowerPoint slideResearch highlights
► N,Ce-codoped titania hollow spheres were prepared for the first time.
► The codoped titania hollow spheres show high activity under visible light.
► The effect of N and Ce on the physical structure and photocatalytic activity was investigated.