Metal oxide single-component light-powered micromotors for photocatalytic degradation of nitroaromatic pollutants

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dc.contributor.authorPeng, Xiacs
dc.contributor.authorUrso, Mariocs
dc.contributor.authorPumera, Martincs
dc.coverage.issue1cs
dc.coverage.volume6cs
dc.date.issued2023-03-14cs
dc.description.abstractMass transfer is a key parameter in heterogeneous reactions. Micro/nanomachines, a promising technology for environmental applications, significantly enhance the performance of conventional purification treatments because of the active motion ability and thus enhanced diffusion (superdiffusion) of these photocatalysts, which in turn leads to dramatically improved mass transfer and higher degradation capability compared to stationary microparticles. However, the design of micromotors generally involves noble metals, for instance, Au and Pt, to achieve an effective autonomous motion. Considering the expensive fabrication cost and complicated steps, we present Pt-free single-component light-powered WO3 micromotors capable of enhanced diffusion and effective degradation of nitroaromatic compounds in water. These microswimmers, synthesized by a hydrothermal method, which is highly scalable at low cost, followed by calcination, exhibit fuel-free light-driven motion due to asymmetric light irradiation. Picric acid (PA) and 4-nitrophenol (4-NP) were selected as representative nitroaromatic contaminants and photocatalytically decomposed by WO3 micromotors thanks to the close contact with the micromotors promoted by their self-propulsion. This work provides a low-cost, sustainable, scalable method for enhancing mass transfer by creating moving catalysts with broad application potential for water cleanup.en
dc.formattextcs
dc.format.extent1-7cs
dc.format.mimetypeapplication/pdfcs
dc.identifier.citationnpj Clean Water. 2023, vol. 6, issue 1, p. 1-7.en
dc.identifier.doi10.1038/s41545-023-00235-zcs
dc.identifier.issn2059-7037cs
dc.identifier.orcid0000-0001-7993-8138cs
dc.identifier.orcid0000-0001-5846-2951cs
dc.identifier.other183970cs
dc.identifier.researcheridF-2724-2010cs
dc.identifier.urihttp://hdl.handle.net/11012/213609
dc.language.isoencs
dc.publisherSpringer Naturecs
dc.relation.ispartofnpj Clean Watercs
dc.relation.urihttps://www.nature.com/articles/s41545-023-00235-zcs
dc.rightsCreative Commons Attribution 4.0 Internationalcs
dc.rights.accessopenAccesscs
dc.rights.sherpahttp://www.sherpa.ac.uk/romeo/issn/2059-7037/cs
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/cs
dc.subjectMicro/nanomachinesen
dc.subjecthydrothermal methoden
dc.subjectnitroaromatic contaminantsen
dc.titleMetal oxide single-component light-powered micromotors for photocatalytic degradation of nitroaromatic pollutantsen
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
sync.item.dbidVAV-183970en
sync.item.dbtypeVAVen
sync.item.insts2025.02.03 15:50:33en
sync.item.modts2025.01.17 16:43:17en
thesis.grantorVysoké učení technické v Brně. Středoevropský technologický institut VUT. Energie budoucnosti a inovacecs
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