Abstract
Abstract The Ag/AgCl modified self-doped TiO 2 hollow spheres were successfully prepared firstly by a sol–gel method using carbon sphere as template and subsequently deposition-precipitation and photo-reduction process. Characteristics and properties of the products were investigated using X-ray diffraction (XRD), UV–vis diffuse reflectance spectra (UV–vis DRS), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The results showed that the self-doped TiO 2 hollow spheres, with diameters about 800–950 nm and shell thickness of 20–30 nm, are constituted with thousands of self-doped TiO 2 nanoparticles with diameters of 20–30 nm. Ag/AgCl modified self-doped TiO 2 hollow spheres showed broad absorption in the region of 400–700 nm arising from surface plasmon resonance of Ag nanoparticles. The as prepared samples showed improved solar light and visible light induced photocatalytic activities by decomposing Rhodamine B. The improved visible light photocatalytic activities may be due to the oxygen vacancies and Ti 3+ localized states of the self-doped TiO 2 hollow spheres and the surface plasmonic resonance effect.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.