Eur. Phys. J. Appl. Phys.
Volume 98, 2023
Special issue on ‘Materials for Energy Harvesting, Conversion, Storage, Environmental Engineering and Sustainability’, edited by M. El Ganaoui, M. El Jouad, R. Bennacer and J.M. Nunzi
|Number of page(s)||14|
|Published online||27 June 2023|
Modeling, optimization and characterization of titanium dioxide thin film prepared by the spin-coating method using the experimental design for an application of photocatalytic degradation of methylene blue
Laboratoire des Sciences de l’Ingénieur pour l’Energie, Ecole Nationale des Sciences Appliquées d’El Jadida, BP 1166, EL Jadida Plateau 24002, Morocco
Received in final form: 14 March 2023
Accepted: 9 May 2023
Published online: 27 June 2023
This work focuses on modeling and optimizing the deposition of a TiO2 film on ITO glass using the spin-coating method and experimental design. The parameters studied include the concentration of the solution, speed and duration of rotation, drying temperatures and time, and calcination temperature and time. Results show that optimal conditions are achieved at 457 g/l concentration, 1020 rpm speed, 43 s duration of rotation, 100 °C drying temperature for 30 s, and 500 °C calcination temperature for 2 h. XRD, FTIR, EDX, and SEM analyses of the TiO2/ITO film indicate crystallization in the anatase phase with a 29.3 nm crystal size and around 80% deposition quality, with good surface adhesion and a thickness of approximately 30 nm. The photocatalytic activity of the thin film for the decomposition of methylene blue (MB) in water was also studied. Results showed a 70% degradation of MB after 4.5 h, which was confirmed by absorption spectra and discoloration of MB. Additionally, the degradation reaction of MB by TiO2 followed the pseudo-first-order, with good agreement between the kinetic study and a high degradation rate constant (k1deg = 0.2919 (h−1)), indicating a rapid process. Finally, a photodegradation mechanism of MB was reported.
© EDP Sciences, 2023
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.