CeO2 nanoparticle-modified BiOI nanoflowers as visible-light-driven heterojunction photocatalyst for tetracycline degradation and antibacterial

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F24%3A43930261" target="_blank" >RIV/60461373:22310/24:43930261 - isvavai.cz</a>

Result on the web

<a href="https://www.sciencedirect.com/science/article/pii/S2352492824024383" target="_blank" >https://www.sciencedirect.com/science/article/pii/S2352492824024383</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.mtcomm.2024.110457" target="_blank" >10.1016/j.mtcomm.2024.110457</a>

Result language

angličtina

Original language name

CeO2 nanoparticle-modified BiOI nanoflowers as visible-light-driven heterojunction photocatalyst for tetracycline degradation and antibacterial

Original language description

BiOI, a typical narrow-band gap visible-light-driven photocatalyst, possesses a high recombination rate of photogenerated electrons and holes, which hinders its practical application in environmental remediation. To improve its photocatalytic efficiency, BiOI/CeO2 heterojunction was designed and prepared via a facile chemical bath method. Compared to pure BiOI, the BiOI/CeO2 heterojunction not only enhanced the absorption of visible-light but also improved the separation and transfer efficiency of photogenerated carriers. Impressively, the BiOI/CeO2 heterojunction with a BiOI:CeO2 molar ratio of 2:1 (named CBOI-2) exhibited the best photocatalytic performance. The CBOI-2 heterojunction can degrade 80 % of tetracycline within 60 min, and the degradation activity was almost intact after three cycles. The reaction rate constant of CBOI-2 heterojunction was 22.1 times that of BiOI and 5.8 times that of CeO2. Moreover, CBOI-2 heterojunction behaves much better in antibacterial effect whose antibacterial efficiency reaches similar to 99.6 %. A double charge-transfer mechanism was proposed in this work and it indicated that the improved photocatalytic efficiency mainly resulted from an enhanced separation and transfer of photogenerated carriers. During the photocatalytic reaction process, superoxide radicals, hydroxyl radicals and holes were generated, which play important roles in the degradation of tetracycline and antibacterial. This work provides important insights into the design of visible-light-driven photocatalysts with high photocatalytic activity for antibiotic degradation and bacteria killing.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10405 - Electrochemistry (dry cells, batteries, fuel cells, corrosion metals, electrolysis)

Project

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2024

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Materials Today Communications

ISSN

2352-4928

e-ISSN

2352-4928

Volume of the periodical

41

Issue of the periodical within the volume

December 2024

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

10

Pages from-to

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UT code for WoS article

001320776300001

EID of the result in the Scopus database

2-s2.0-85204290925