The degradation of diclofenac has been realized for the first time by a piezo-enhanced sonophotocatalytic approach based on ZnO. The sonophotocatalytic degradation showed a slight enhancement in the degradation of the parent compound, whereas strong synergistic effects were observed for the mineralization process when suitable ZnO morphologies are used, reaching 70% of complete degradation of 25 ppm diclofenac using 0.1 g/L ZnO in 360 min. Tests in a complex water matrix show enhanced diclofenac removal, outperforming a TiO2 benchmark photocatalyst. These promising experimental results promote this process as a good alternative to traditional degradation approaches for remediation of real water matrices.

Piezo-enhanced photocatalytic diclofenac mineralization over ZnO / D. Meroni, C.L. Bianchi, D.C. Boffito, G. Cerrato, A. Bruni, M. Sartirana, E. Falletta. - In: ULTRASONICS SONOCHEMISTRY. - ISSN 1350-4177. - 75(2021 Jul), pp. 105615.1-105615.5.

Piezo-enhanced photocatalytic diclofenac mineralization over ZnO

D. Meroni
Primo
Validation
;
C.L. Bianchi
Secondo
Formal Analysis
;
A. Bruni
Investigation
;
M. Sartirana
Investigation
;
E. Falletta
Ultimo
Data Curation
2021-07

Abstract

The degradation of diclofenac has been realized for the first time by a piezo-enhanced sonophotocatalytic approach based on ZnO. The sonophotocatalytic degradation showed a slight enhancement in the degradation of the parent compound, whereas strong synergistic effects were observed for the mineralization process when suitable ZnO morphologies are used, reaching 70% of complete degradation of 25 ppm diclofenac using 0.1 g/L ZnO in 360 min. Tests in a complex water matrix show enhanced diclofenac removal, outperforming a TiO2 benchmark photocatalyst. These promising experimental results promote this process as a good alternative to traditional degradation approaches for remediation of real water matrices.
advanced oxidation processes; ZnO; diclofenac; piezo-enhanced photodegradation; mineralization; transformation products
Settore CHIM/04 - Chimica Industriale
Settore CHIM/02 - Chimica Fisica
Water decontamination by sunlight-driven floating photocatalytic systems (SUNFLOAT)
1-giu-2021
Article (author)
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/2434/849012
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