| Khadidja Hadj Larbi,Farid Habelhames,Meriem Lakhdari,Farid Bennabi,Belkacem Nessark,Mehdi Adjdir,Abdelkader Echchergui Nebatti,Bouhalouane Amrani.A comparative study of a direct and pulse electrodeposition method of TiO2 films and its effect on photoelectrocatalytic degradation of methyl orange dye[J].Optoelectronics Letters,2021,17(6):334-341 |
| A comparative study of a direct and pulse electrodeposition method of TiO2 films and its effect on photoelectrocatalytic degradation of methyl orange dye |
| Author Name | Affiliation | | Khadidja Hadj Larbi | Laboratoire d’électrochimie et matériaux LEM, Faculté de Technologie, Département de génie des procédés, Université Ferhat Abbas Sétif-1, Sétif 19000, Algérie | | Farid Habelhames | Laboratoire d’électrochimie et matériaux LEM, Faculté de Technologie, Département de génie des procédés, Université Ferhat Abbas Sétif-1, Sétif 19000, Algérie | | Meriem Lakhdari | Laboratoire d’électrochimie et matériaux LEM, Faculté de Technologie, Département de génie des procédés, Université Ferhat Abbas Sétif-1, Sétif 19000, Algérie | | Farid Bennabi | Laboratory of Applied Chemistry, University of Ain-Temouchent Belhadj Bouchaib, Algeria | | Belkacem Nessark | Laboratoire d’électrochimie et matériaux LEM, Faculté de Technologie, Département de génie des procédés, Université Ferhat Abbas Sétif-1, Sétif 19000, Algérie | | Mehdi Adjdir | Laboratory of Applied Organic Synthesis, Faculty of Exact and Applied Sciences, University Oran1 Ahmed Ben Bella, BP 1524 El M'Naouer, Oran 31000, Algeria | | Abdelkader Echchergui Nebatti | Laboratory of Materials Sciences and Applications LMSA, University of Ain-Temouchent Belhadj Bouchaib, Algeria | | Bouhalouane Amrani | Electron Microscopy Center, Faculty of Exact and Applied Sciences, University of Oran1 Ahmed Ben Bella, Oran, Algeria |
|
| Abstract: |
| The present study reports the titanium dioxide (TiO2) films synthesized from TiCl3 precursor on ITO glass substrates using two electrochemical techniques, namely direct electro-deposition (DE) and pulse electro-deposition (PE). The synthesis potential during the time-on (Ton) period was fixed at ?1.5 V. However, the open-circuit potential was applied during the time-off (Toff) period. The effect of the technique of electro-deposition and Toff duration on the properties of TiO2 films and their photoelectron-catalytic activity were investigated. The obtained films were investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM), UV-VIS spectrometer, and photocurrent measurement respectively. It is found that the use of the PE technique at different Toff improves the properties of TiO2 films compared to the DE technique. The XRD patterns show the anatase phase with a marked preferential orientation along the (101) direction for all samples. From the SEM analysis, it is seen a significant change from big multigrain agglomerates at DE to a dense film structure and small multigrain agglomerates at different Toff. As the Toff decreases from 3 s to 1 s, the photocurrent response rises and reaches a high value of about 12 mA/cm2. Compared with DE, and under UV light the photocatalytic property of TiO2 film synthesis via PE has been improved in the degradation of methyl orange (MO). Finally, the films deposited at low Toff (Toff =1 s) show a faster degradation of MO. |
| Hits: 566 |
| Download times: 40 |
|
| View Full Text Download reader |
|
|
|
