{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,7]],"date-time":"2026-07-07T17:44:38Z","timestamp":1783446278800,"version":"3.55.0"},"reference-count":81,"publisher":"MDPI AG","issue":"3","license":[{"start":{"date-parts":[[2023,1,20]],"date-time":"2023-01-20T00:00:00Z","timestamp":1674172800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Nanomaterials"],"abstract":"<jats:p>The present work investigates the effect of ultrasounds in the performance of combined advanced oxidation processes (AOPs) on the degradation of formaldehyde (HCHO)-polluted aqueous solutions for potential application in wastewater treatment. Different heterogeneous nanostructured catalysts based on TiO2 and FeSO4 for photocatalysis and the Fenton process were employed after electrospray deposition on electrospun nanofibrous membranes. Such systems were tested, without the use of any added hydrogen peroxide, by varying the combinations among the selected AOPs in a batch reactor configuration. The results show that, in the absence of a Fenton reaction, ultrasounds provided a significantly increased formaldehyde photocatalytic abatement, probably by increasing the concentration of active species through a different set of reactions while providing a favorable mass transfer regime by the cavitational effect. Due to the faster kinetics of the photo\u2013Fenton process, thanks to its partial homogeneous nature, such a beneficial effect is more limited for the sono\u2013photo\u2013Fenton configuration. On the other hand, the employment of a sono\u2013photocatalytic\u2013Fenton process revealed a synergic effect that provided the best results, reducing the formaldehyde concentration to less than 99% after 240 min. Further analysis showed that, due to a mutual influence, only a tailored TiO2\/FeSO4 ratio on the membranes was able to display the best performance.<\/jats:p>","DOI":"10.3390\/nano13030435","type":"journal-article","created":{"date-parts":[[2023,1,23]],"date-time":"2023-01-23T03:48:08Z","timestamp":1674445688000},"page":"435","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":8,"title":["Ultrasound-Promoted Abatement of Formaldehyde in Liquid Phase with Electrospun Nanostructured Membranes: The Synergy of Combined AOPs"],"prefix":"10.3390","volume":"13","author":[{"given":"Carlo","family":"Boaretti","sequence":"first","affiliation":[{"name":"Department of Industrial Engineering, University of Padova, Via Marzolo 9, 35131 Padova, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6430-2751","authenticated-orcid":false,"given":"Martina","family":"Roso","sequence":"additional","affiliation":[{"name":"Department of Industrial Engineering, University of Padova, Via Marzolo 9, 35131 Padova, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5805-5587","authenticated-orcid":false,"given":"Michele","family":"Modesti","sequence":"additional","affiliation":[{"name":"Department of Industrial Engineering, University of Padova, Via Marzolo 9, 35131 Padova, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Alessandra","family":"Lorenzetti","sequence":"additional","affiliation":[{"name":"Department of Industrial Engineering, University of Padova, Via Marzolo 9, 35131 Padova, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2023,1,20]]},"reference":[{"key":"ref_1","unstructured":"(2022, November 18). 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