Piezo-enhanced photocatalytic diclofenac mineralization over ZnO.

Ultrasonics Sonochemistry
Daniela MeroniErmelinda Falletta

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.

References

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Feb 13, 2010·Journal of Hazardous Materials·Jagannathan MadhavanMuthupandian Ashokkumar
Jun 15, 2010·Chemosphere·Jagannathan MadhavanMuthupandian Ashokkumar
Oct 6, 2015·Nature Materials·Ilias KatsourasDago M de Leeuw
Nov 15, 2016·Photochemical & Photobiological Sciences : Official Journal of the European Photochemistry Association and the European Society for Photobiology·Luca RimoldiSilvia Ardizzone
Jul 26, 2017·Environmental Monitoring and Assessment·Maryam SalimiHamid Reza Sobhi
Apr 14, 2020·Ultrasonics Sonochemistry·Daniela MeroniCarlo Pirola

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