Abstract
Photoactive anatase TiO2 films were deposited on thermally sensitive expanded polystyrene (EPS) surface using reactive pulsed DC magnetron sputtering technique. Free-surface energy of EPS was increased by plasma treatment. Thickness of deposited TiO2 film was approximately 450 nm. Photocatalytic properties were investigated by bleaching methylene blue (MB) aqueous solution under UV-B, UV-A and daylight irradiation. TiO2 films deposited on EPS surface demonstrated significant photocatalytic effect under all three types of irradiation. Photocatalyst stability tests showed decrease of photocatalytic activity after each consecutive cycle (≈80% decrease after 5 cycles) due to detachment of unstable areas of TiO2 film and aggregation of MB solution at boundaries of closely connected EPS beads. The detailed analysis of TiO2 films was performed using combination of conventional SEM, XRD, XPS and other techniques.
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.
