New photocatalytic contactors obtained by PECVD deposition of TiO 2 thin layers on the surface of macroporous supports
- 89 Downloads
Two different kinds of PECVD anatase-based composite membranes have been successfully prepared by PECVD synthesis (at 150 °C)/post-annealing (at 300 °C) of a titania film deposited on macroporous supports as a top-layer or a skin-coverage. Photocatalytic activity of PECVD anatase films has been proved performing Pilkington test and methylene blue degradation determination in a lab-scale diffusion cell. Measurements of methylene blue degradation and water flow in a pilot-scale dynamic unit have enabled to show the performance of PECVD anatase-based membranes in terms of permeation and photocatalytic properties. Whereas bi-layered membranes present higher photo-degradation ability (up to 2.5 × 10−8 mol s−1 m−2 destroyed methylene blue moles per unit of time and of membrane surface area), skin-covered membranes are characterized by higher water permeance (up to 6800 L h−1 m−2 bar−1). So both kinds of membranes should have an interest as photocatalytic contactors.
KeywordsMethylene Blue Photocatalytic Activity Methylene Blue European Physical Journal Special Topic Composite Membrane
Unable to display preview. Download preview PDF.
- 6.J. Madocks, W. Seaman, M.A. George, Q. Shangguan, in Proceedings of the Annual Technical Conference Proceedings, edited by Society of Vacuum Coaters, 53rd (2010), p. 247Google Scholar
- 7.S. Roualdes, V. Rouessac, J. Durand, in Comprehensive Membrane Science and Engineering, edited by E. Drioli and L. Giorno 1, 159 (2010)Google Scholar
- 8.S.S. Huang, J.S. Chen, J. Mater. Sc.: Mater. Electron. 13(2), 77 (2002)Google Scholar
- 12.M. Zhou, S. Roualdès, J. Zhao, V. Autès, A. Ayral, Thin Solid Films (to be published)Google Scholar
- 15.J.A.M. Ammerlaan, R.J. Mc Curdy, S.J. Hurst, International Patent WO 00/75087 A1 (2000)Google Scholar