Please use this identifier to cite or link to this item:
http://hdl.handle.net/2445/143260
Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Serrà i Ramos, Albert | - |
dc.contributor.author | Zhang, Yue | - |
dc.contributor.author | Sepúlveda, Borja | - |
dc.contributor.author | Gómez, Elvira | - |
dc.contributor.author | Nogués, Josep | - |
dc.contributor.author | Michler, Johann | - |
dc.contributor.author | Philippe, Laetitia | - |
dc.date.accessioned | 2019-10-28T11:49:48Z | - |
dc.date.available | 2021-10-16T05:10:20Z | - |
dc.date.issued | 2020-02-01 | - |
dc.identifier.issn | 0043-1354 | - |
dc.identifier.uri | http://hdl.handle.net/2445/143260 | - |
dc.description.abstract | Developing 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.extent | 18 p. | - |
dc.format.mimetype | application/pdf | - |
dc.language.iso | eng | - |
dc.publisher | Elsevier Ltd | - |
dc.relation.isformatof | Versió postprint del document publicat a: https://doi.org/10.1016/j.watres.2019.115210 | - |
dc.relation.ispartof | Water Research, 2020, vol. 169, p. 115210 | - |
dc.relation.uri | https://doi.org/10.1016/j.watres.2019.115210 | - |
dc.rights | cc-by-nc-nd (c) Elsevier Ltd, 2019 | - |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/3.0/es | - |
dc.source | Articles publicats en revistes (Ciència dels Materials i Química Física) | - |
dc.subject.classification | Fotocatàlisi | - |
dc.subject.classification | Òxid de zinc | - |
dc.subject.classification | Contaminants persistents | - |
dc.subject.classification | Microalgues | - |
dc.subject.other | Photocatalysis | - |
dc.subject.other | Zinc oxide | - |
dc.subject.other | Persistent pollutants | - |
dc.subject.other | Microalgae | - |
dc.title | Highly reduced ecotoxicity of ZnO-based micro/nanostructures on aquatic biota: Influence of architecture, chemical composition, fixation, and photocatalytic efficiency | - |
dc.type | info:eu-repo/semantics/article | - |
dc.type | info:eu-repo/semantics/acceptedVersion | - |
dc.identifier.idgrec | 692198 | - |
dc.date.updated | 2019-10-28T11:49:48Z | - |
dc.relation.projectID | info:eu-repo/grantAgreement/EC/H2020/754364/EU//EMPAPOSTDOCS-II | - |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | - |
Appears in Collections: | Articles publicats en revistes (Ciència dels Materials i Química Física) |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
692198.pdf | 2.03 MB | Adobe PDF | View/Open |
This item is licensed under a Creative Commons License