Abstract
An overall comparative study was carried out on Li-doped, F-doped, and Li–F-codoped TiO 2 powders in order to elucidate the roles of Li + and F − ions in photocatalyst. The characteristic data were based on the analysis of XRD, XPS, and PL spectra. The effects of atomic ratio of Li/Ti and F/Ti on the photocatalytic activity were also investigated. As the results, Li doping accelerated the phase formation of rutile in lower temperature while F doping prevented the phase transition from anatase to rutile. Li doping inducted a large amount of O OH on the surface of TiO 2, while F doping consumed much of O OH. Li + ions acted as the roles of recombination center of electron–hole pairs while F doping could restrain the recombination of electron–hole pairs on the center of Li + ions. The roles of Li + and F − ions were also confirmed in the experimental section, where the photocatalytic activity of TiO 2 was improved greatly by synergistic reaction of Li + and F − ions.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: 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.
