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Empowering Adsorption and Photocatalytic Degradation of Ciprofloxacin on BiOI Composites: A Material-by-Design Investigation
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Geosciences and Environmental Engineering.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.ORCID iD: 0000-0002-4628-3857
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Energy Science.ORCID iD: 0000-0001-6081-5736
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2023 (English)In: ACS Omega, E-ISSN 2470-1343, Vol. 8, no 46, p. 44044-44056Article in journal (Refereed) Published
Abstract [en]

Binary and ternary composites of BiOI with NH2-MIL-101(Fe) and a functionalized biochar were synthesized through an in situ approach, aimed at spurring the activity of the semiconductor as a photocatalyst for the removal of ciprofloxacin (CIP) from water. Experimental outcomes showed a drastic enhancement of the adsorption and the equilibrium (which increased from 39.31 mg g–1 of bare BiOI to 76.39 mg g–1 of the best ternary composite in 2 h time), while the kinetics of the process was not significantly changed. The photocatalytic performance was also significantly enhanced, and the complete removal of 10 ppm of CIP in 3 h reaction time was recorded under simulated solar light irradiation for the best catalyst of the investigated batch. Catalytic reactions supported by different materials obeyed different reaction orders, indicating the existence of different mechanisms. The use of scavengers for superoxide anion radicals, holes, and hydroxyl radicals showed that although all these species are involved in CIP photodegradation, the latter play the most crucial role, as also confirmed by carrying out the reaction at increasing pH conditions. A clear correlation between the reduction of BiOI crystallite sizes in the composites, as compared to the bare material, and the material performance as both adsorbers and photocatalyst was identified. 

Place, publisher, year, edition, pages
American Chemical Society (ACS), 2023. Vol. 8, no 46, p. 44044-44056
National Category
Physical Chemistry Materials Chemistry
Research subject
Energy Engineering; Experimental Physics; Waste Science and Technology
Identifiers
URN: urn:nbn:se:ltu:diva-103204DOI: 10.1021/acsomega.3c06243ISI: 001108005100001Scopus ID: 2-s2.0-85178352921OAI: oai:DiVA.org:ltu-103204DiVA, id: diva2:1818575
Funder
The Kempe Foundations, SMK-1974Knut and Alice Wallenberg FoundationBio4Energy
Note

Validerad;2023;Nivå 2;2023-12-11 (joosat);

License full text: CC BY

Available from: 2023-12-11 Created: 2023-12-11 Last updated: 2024-03-07Bibliographically approved

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Khasevani, Sepideh GholizadehNikjoo, DariushUmeki, KentaroConcina, Isabella

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