Nano-sized FeVO4·1.1H₂O and FeVO4 for peroxymonosulfate activation towards enhanced photocatalytic activity

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dc.contributor.authorLi, D.
dc.contributor.authorYao, Z.
dc.contributor.authorLin, J.
dc.contributor.authorTian, W.
dc.contributor.authorZhang, H.
dc.contributor.authorDuan, X.
dc.contributor.authorWang, S.
dc.date.issued2022
dc.description.abstractVisible-light-assisted catalytic peroxymonosulfate (PMS) activation is an effective advanced oxidation technique for removing organic pollutants from water. Here, nano-sized fervanite FeVO4∙1.1 H2O (FV-H) and FeVO4 (FV-A) with regulated structures are synthesized at different pH values or annealing temperatures for photocatalytic methylene blue (MB) degradation via PMS activation. The activation mechanisms induced by FV-H and FV-A photocatalysts are examined by radical quenching, electron paramagnetic resonance (EPR) tracing methods, and (photo) electrochemical characterization. Our findings indicate that the multiple PMS activation pathways by photogenerated charge carriers from photocatalysts, as well as Fe(II)/Fe(III) and V(IV)/V(V) mixed-valence ion pairs led to the production of reactive holes (h+), hydroxyl (•OH) and sulfate radical (SO4•−) in FV-H (or FV-A)/PMS/Vis system for photodegradation, while SO4•− worked dominantly for MB degradation. The influences of PMS dosage, inorganic anions, pH value, and MB concentration on the degradation rates are also investigated. This work offers a new thought to the synthesis of high-efficiency photocatalysts for practical water treatment.
dc.description.statementofresponsibilityDi Li, Zhengxin Yao, Jingkai Lin, Wenjie Tian, Huayang Zhang, Xiaoguang Duan, Shaobin Wang
dc.identifier.citationJournal of Environmental Chemical Engineering, 2022; 10(2):107199-1-107199-10
dc.identifier.doi10.1016/j.jece.2022.107199
dc.identifier.issn2213-3437
dc.identifier.issn2213-3437
dc.identifier.orcidLin, J. [0000-0001-6409-0146]
dc.identifier.orcidTian, W. [0000-0002-7503-5481] [0000-0002-9896-1154]
dc.identifier.orcidDuan, X. [0000-0001-9635-5807]
dc.identifier.orcidWang, S. [0000-0002-1751-9162]
dc.identifier.urihttps://hdl.handle.net/2440/135255
dc.language.isoen
dc.publisherElsevier BV
dc.relation.granthttp://purl.org/au-research/grants/arc/DP190103548
dc.rights© 2022 Elsevier Ltd. All rights reserved.
dc.source.urihttps://doi.org/10.1016/j.jece.2022.107199
dc.subjectFeVO4 1.1H20
dc.subjectFeVO4
dc.subjectPeroxymonosulfate
dc.subjectSulfate radical
dc.subjectPhotocatalysis
dc.titleNano-sized FeVO4·1.1H₂O and FeVO4 for peroxymonosulfate activation towards enhanced photocatalytic activity
dc.typeJournal article
pubs.publication-statusPublished

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