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

Cerrato G.;
2021

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.
ULTRASONICS SONOCHEMISTRY
75
105615
105619
Advanced oxidation processes; Diclofenac; Mineralization; Piezo-enhanced photodegradation; Transformation products; ZnO
Meroni D.; Bianchi C.L.; Boffito D.C.; Cerrato G.; Bruni A.; Sartirana M.; Falletta E.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/2318/1799584
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