Abstract
Silica-doped nanocrystalline titania powders were prepared using the sol–gel technique. The influence of dopant concentration on the phase transition and grain growth was studied. Subsequently the sample was studied at a constant dopant concentration to investigate the effect of calcination temperature on the photoactivity of titania. It was found that 30SiO 2/TiO 2 (30 denotes the weight percent of SiO 2) fired at 800 °C has a higher photoactivity than other samples with different silica content and different calcination temperature. The effect of addition of silica was to increase the photoactivity by suppressing the phase transformation of titania from anatase to rutile and forming oxygen vacancies in titania.
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.
