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dc.creatorPopadić, Daliborka
dc.creatorGavrilov, Nemanja
dc.creatorIgnjatović, Ljubiša
dc.creatorKrajišnik, Danina
dc.creatorMentus, Slavko
dc.creatorMilojević-Rakić, Maja
dc.creatorBajuk-Bogdanović, Danica
dc.date.accessioned2022-05-17T10:54:40Z
dc.date.available2022-05-17T10:54:40Z
dc.date.issued2022
dc.identifier.issn2073-4344
dc.identifier.urihttps://www.mdpi.com/2073-4344/12/5/519
dc.identifier.urihttps://farfar.pharmacy.bg.ac.rs/handle/123456789/4099
dc.description.abstractUnmodified natural silicates (bentonite, kaolin, clinoptilolite and diatomites) were tested as adsorbents for the organic pollutants in water tables using Methylene Blue (MB) as the model adsorbate. Among the selected materials, bentonite adsorbed as much as 237 mg/g, confirming its excellent suitability for pollutant removal. Spectral evidence confirmed successful MB immobilization at the bentonite surface. Furthermore, the thermal treatment of MB-saturated adsorbent in an inert atmosphere at 700 °C produced a carbon/silicate composite. EDX confirmed the formation of the nitrogen-doped carbon overlay on the silica scaffold and the obtained composite material was probed as an electrode material for oxygen reduction in an alkaline solution. Reduction proceeded via a two-electron mechanism with the main product being HO2−, a known nucleophile, which was subsequently used to degrade/demethylate MB. The composite showed a considerable 70% MB removal rate after an hour of electrochemical treatment. The synergy between the processes of adsorption of MB and the surface-generated HO2− dictates the efficiency of the method and points to a possible route for spent adsorbent reuse in the form of a durable product for environmental protection.
dc.publisherMDPI
dc.relationinfo:eu-repo/grantAgreement/MESTD/inst-2020/200146/RS//
dc.relationinfo:eu-repo/grantAgreement/MESTD/inst-2020/200161/RS//
dc.rightsopenAccess
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.sourceCatalysts
dc.subjectbentonite
dc.subjectmethylene blue
dc.subjectoxygen reduction reaction
dc.subjectspent adsorbent
dc.titleHow to Obtain Maximum Environmental Applicability from Natural Silicates
dc.typearticle
dc.rights.licenseBY
dc.citation.volume12
dc.citation.issue5
dc.citation.rankM22
dc.identifier.wos00080152910000
dc.identifier.doi10.3390/catal12050519
dc.identifier.scopus2-s2.0-85129371491
dc.type.versionpublishedVersion


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Приказ основних података о документу