Photocatalytic and photoelectrocatalytic degradation of perfluorooctanoic acid by immobilised ZnO nanoparticles using electrophoretic deposition

Navidpour, AH; Safaei, J; Zhang, G; Mojiri, A; Ni, BJ; Huang, Z; Zhou, JL

Photocatalytic and photoelectrocatalytic degradation of perfluorooctanoic acid by immobilised ZnO nanoparticles using electrophoretic deposition

Navidpour, AH Safaei, J

Zhang, G Mojiri, A Ni, BJ Huang, Z

Zhou, JL

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Publisher:: ROYAL SOC CHEMISTRY
Publication Type:: Journal Article
Citation:: Environmental Science: Nano, 2023, 10, (8), pp. 1955-1965
Issue Date:: 2023-07-11

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Field	Value	Language
dc.contributor.author	Navidpour, AH
dc.contributor.author	Safaei, J https://orcid.org/0000-0003-3397-5026
dc.contributor.author	Zhang, G
dc.contributor.author	Mojiri, A
dc.contributor.author	Ni, BJ
dc.contributor.author	Huang, Z https://orcid.org/0000-0003-1985-0884
dc.contributor.author	Zhou, JL
dc.date.accessioned	2024-03-13T01:29:44Z
dc.date.available	2024-03-13T01:29:44Z
dc.date.issued	2023-07-11
dc.identifier.citation	Environmental Science: Nano, 2023, 10, (8), pp. 1955-1965
dc.identifier.issn	2051-8153
dc.identifier.issn	2051-8161
dc.identifier.uri	http://hdl.handle.net/10453/176612
dc.description.abstract	This research represented the first study of perfluorooctanoic acid (PFOA) decomposition using immobilized ZnO nanoparticles by electrophoretic deposition in photocatalysis and photoelectrocatalysis. Overall, considering process performance, application under visible light exposure, and cost-effectiveness, ZnO nanoparticles are highly promising for PFOA degradation. The effect of the probable production of sulfate radicals on PFOA photocatalytic decomposition over ZnO films was investigated by the addition of different concentrations of peroxymonosulfate (PMS). Notably, ∼42% of PFOA was decomposed within 2 hours (rate constant = 0.287 h−1) under UV irradiation in the presence of 0.27 g L−1 PMS. Importantly, the same amount of PMS initiated PFOA degradation under visible light exposure with the rate constant of 0.125 h−1. In photoelectrocatalysis, the optimal ZnO film demonstrated an excellent degradation performance of ∼49% within 2 hours at V = 0 (under UV irradiation). Overall, ZnO was highly promising in both photoelectrocatalysis and PMS-assisted photocatalysis, although PMS could enhance ZnO corrosion. In addition to the sulfate radicals, the photogenerated holes and superoxide radicals were among the main active species responsible for PFOA decomposition.
dc.language	English
dc.publisher	ROYAL SOC CHEMISTRY
dc.relation.ispartof	Environmental Science: Nano
dc.relation.isbasedon	10.1039/d3en00241a
dc.rights	info:eu-repo/semantics/embargoedAccess
dc.subject	0399 Other Chemical Sciences, 0907 Environmental Engineering, 1002 Environmental Biotechnology
dc.title	Photocatalytic and photoelectrocatalytic degradation of perfluorooctanoic acid by immobilised ZnO nanoparticles using electrophoretic deposition
dc.type	Journal Article
utslib.citation.volume	10
utslib.for	0399 Other Chemical Sciences
utslib.for	0907 Environmental Engineering
utslib.for	1002 Environmental Biotechnology
pubs.organisational-group	University of Technology Sydney
pubs.organisational-group	University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
pubs.organisational-group	University of Technology Sydney/Faculty of Science
pubs.organisational-group	University of Technology Sydney/Strength - CTWW - Centre for Technology in Water and Wastewater Treatment
pubs.organisational-group	University of Technology Sydney/Faculty of Science/School of Mathematical and Physical Sciences
pubs.organisational-group	University of Technology Sydney/Strength - CCET - Centre for Clean Energy Technology
pubs.organisational-group	University of Technology Sydney/Strength - CGT - Centre for Green Technology
utslib.copyright.status	embargoed	*
utslib.copyright.embargo	2024-08-10T00:00:00+1000Z
dc.date.updated	2024-03-13T01:29:42Z
pubs.issue	8
pubs.publication-status	Published
pubs.volume	10
utslib.citation.issue	8

Abstract:

This research represented the first study of perfluorooctanoic acid (PFOA) decomposition using immobilized ZnO nanoparticles by electrophoretic deposition in photocatalysis and photoelectrocatalysis. Overall, considering process performance, application under visible light exposure, and cost-effectiveness, ZnO nanoparticles are highly promising for PFOA degradation. The effect of the probable production of sulfate radicals on PFOA photocatalytic decomposition over ZnO films was investigated by the addition of different concentrations of peroxymonosulfate (PMS). Notably, ∼42% of PFOA was decomposed within 2 hours (rate constant = 0.287 h−1) under UV irradiation in the presence of 0.27 g L−1 PMS. Importantly, the same amount of PMS initiated PFOA degradation under visible light exposure with the rate constant of 0.125 h−1. In photoelectrocatalysis, the optimal ZnO film demonstrated an excellent degradation performance of ∼49% within 2 hours at V = 0 (under UV irradiation). Overall, ZnO was highly promising in both photoelectrocatalysis and PMS-assisted photocatalysis, although PMS could enhance ZnO corrosion. In addition to the sulfate radicals, the photogenerated holes and superoxide radicals were among the main active species responsible for PFOA decomposition.

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http://hdl.handle.net/10453/176612