Please use this identifier to cite or link to this item: http://hdl.handle.net/2445/143260
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dc.contributor.authorSerrà i Ramos, Albert-
dc.contributor.authorZhang, Yue-
dc.contributor.authorSepúlveda, Borja-
dc.contributor.authorGómez, Elvira-
dc.contributor.authorNogués, Josep-
dc.contributor.authorMichler, Johann-
dc.contributor.authorPhilippe, Laetitia-
dc.date.accessioned2019-10-28T11:49:48Z-
dc.date.available2021-10-16T05:10:20Z-
dc.date.issued2020-02-01-
dc.identifier.issn0043-1354-
dc.identifier.urihttp://hdl.handle.net/2445/143260-
dc.description.abstractDeveloping efficient sunlight photocatalysts with enhanced photocorrosion resistance and minimal eco-toxicological effects on aquatic biota is critical to combat water contamination. Here, the role of chem-ical composition, architecture, and fixation on the ecotoxicological effects on microalgae of different ZnO and ZnO@ZnS based water decontamination photocatalysts was analyzed in depth. In particular, the ecotoxicological effects of films, nanoparticles and biomimetic micro/nano-ferns were carefully as-sessed by correlating the algae's viability to the Zn(II) release, the photocatalyst-microalgae interac-tion, and the production of reactive oxygen species (ROS). The results showed a drastic improvement in algal viability for supported ZnO@ZnS core@shell micro/nanoferns, as their ecotoxicity after 96 h light exposure was significantly lower (3.7-10.0% viability loss) compared to the ZnO films (18.4-35.5% loss), ZnO micro/nanoferns (28.5-53.5% loss), ZnO nanoparticles (48.3-91.7% loss) or ZnO@ZnS nanoparticles (8.6-19.2% loss) for catalysts concentrations ranging from 25 mg L-1 to 400 mg L-1. In particular, the ZnO@ZnS micro/nanoferns with a concentration of 400 mg L-1 exhibited ex-cellent photocatalytic efficiency to mineralize a multi-pollutant solution (81.4±0.3% mineralization ef-ficiency after 210 min under UV-filtered visible light irradiation) and minimal photocorrosion (< 5% of photocatalyst dissolution after 96 h of UV-filtered visible light irradiation). Remarkably, the ZnO@ZnS micro/nanoferns showed lower loss of algal viability (9.8±1.1%) after 96 h of light exposure, with min-imal reduction in microalgal biomass (9.1±1.0%), as well as in the quantity of chlorophyll-a (9.5±1.0%), carotenoids (8.6±0.9%) and phycocyanin (5.6±0.6%). Altogether, the optimized ZnO@ZnS core@shell micro/nanoferns represent excellent ecofriendly photocatalysts for water reme-diation in complex media, as they combine enhanced sunlight remediation efficiency, minimal adverse effects on biological microorganisms, high reusability and easy recyclability.-
dc.format.extent18 p.-
dc.format.mimetypeapplication/pdf-
dc.language.isoeng-
dc.publisherElsevier Ltd-
dc.relation.isformatofVersió postprint del document publicat a: https://doi.org/10.1016/j.watres.2019.115210-
dc.relation.ispartofWater Research, 2020, vol. 169, p. 115210-
dc.relation.urihttps://doi.org/10.1016/j.watres.2019.115210-
dc.rightscc-by-nc-nd (c) Elsevier Ltd, 2019-
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es-
dc.sourceArticles publicats en revistes (Ciència dels Materials i Química Física)-
dc.subject.classificationFotocatàlisi-
dc.subject.classificationÒxid de zinc-
dc.subject.classificationContaminants persistents-
dc.subject.classificationMicroalgues-
dc.subject.otherPhotocatalysis-
dc.subject.otherZinc oxide-
dc.subject.otherPersistent pollutants-
dc.subject.otherMicroalgae-
dc.titleHighly reduced ecotoxicity of ZnO-based micro/nanostructures on aquatic biota: Influence of architecture, chemical composition, fixation, and photocatalytic efficiency-
dc.typeinfo:eu-repo/semantics/article-
dc.typeinfo:eu-repo/semantics/acceptedVersion-
dc.identifier.idgrec692198-
dc.date.updated2019-10-28T11:49:48Z-
dc.relation.projectIDinfo:eu-repo/grantAgreement/EC/H2020/754364/EU//EMPAPOSTDOCS-II-
dc.rights.accessRightsinfo:eu-repo/semantics/openAccess-
Appears in Collections:Articles publicats en revistes (Ciència dels Materials i Química Física)

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