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Efficacy of the Reactive Oxygen Species Generated by Immobilized TiO2 in the Photocatalytic Degradation of Diclofenac
Joint Authors
Di Credico, B.
Bellobono, I. R.
Fumagalli, D.
Redaelli, M.
Scotti, R.
Morazzoni, Franca
D'Arienzo, Massimiliano
Source
International Journal of Photoenergy
Issue
Vol. 2015, Issue 2015 (31 Dec. 2015), pp.1-13, 13 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2015-05-27
Country of Publication
Egypt
No. of Pages
13
Main Subjects
Abstract EN
We report on the photodegradation of diclofenac (DCF) by hydrothermal anatase nanocrystals either free or immobilized in porous silica matrix (TS) in connection to the type and amount of reactive oxygen species (ROS), in order to have deeper insight into their role in the photocatalysis and to provide an effective tool to implement the DCF mineralization.
TiO2 and TS exhibit a remarkable efficiency in the DCF abatement, supporting that the utilization of anatase nanoparticles with the highly reactive {001}, {010}, and {101} exposed surfaces can be an effective way for enhancing the photooxidation even of the persistent pollutants.
Furthermore, the hydrothermal TiO2, when immobilized in silica matrix, preserves its functional properties, combining high photoactivity with an easy technical use and recovery of the catalyst.
The catalysts performances have been related to the presence of OH•, O21, and O2-• species by electron paramagnetic resonance spin-trap technique.
The results demonstrated that the ROS concentration increases with the increase of photoactivity and indicated a significant involvement of O21 in the DCF degradation.
The efficacy of TiO2 when immobilized on a silica matrix was associated with the high ROS life time and with the presence of singlet oxygen, which contributes to the complete photomineralization of DCF.
American Psychological Association (APA)
Di Credico, B.& Bellobono, I. R.& D'Arienzo, Massimiliano& Fumagalli, D.& Redaelli, M.& Scotti, R.…[et al.]. 2015. Efficacy of the Reactive Oxygen Species Generated by Immobilized TiO2 in the Photocatalytic Degradation of Diclofenac. International Journal of Photoenergy،Vol. 2015, no. 2015, pp.1-13.
https://search.emarefa.net/detail/BIM-1066652
Modern Language Association (MLA)
Di Credico, B.…[et al.]. Efficacy of the Reactive Oxygen Species Generated by Immobilized TiO2 in the Photocatalytic Degradation of Diclofenac. International Journal of Photoenergy No. 2015 (2015), pp.1-13.
https://search.emarefa.net/detail/BIM-1066652
American Medical Association (AMA)
Di Credico, B.& Bellobono, I. R.& D'Arienzo, Massimiliano& Fumagalli, D.& Redaelli, M.& Scotti, R.…[et al.]. Efficacy of the Reactive Oxygen Species Generated by Immobilized TiO2 in the Photocatalytic Degradation of Diclofenac. International Journal of Photoenergy. 2015. Vol. 2015, no. 2015, pp.1-13.
https://search.emarefa.net/detail/BIM-1066652
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1066652