Composite TiO2-SiO2-REOs photocatalysts for water treatment: Degradation kinetics of monuron and its intermediates

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F23%3A43926657" target="_blank" >RIV/60461373:22310/23:43926657 - isvavai.cz</a>

Result on the web

<a href="https://www.sciencedirect.com/science/article/pii/S1010603023004902?via%3Dihub#s0065" target="_blank" >https://www.sciencedirect.com/science/article/pii/S1010603023004902?via%3Dihub#s0065</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jphotochem.2023.115025" target="_blank" >10.1016/j.jphotochem.2023.115025</a>

Result language

angličtina

Original language name

Composite TiO2-SiO2-REOs photocatalysts for water treatment: Degradation kinetics of monuron and its intermediates

Original language description

Modifying a hydrophilic TiO2 photocatalyst by hydrophobic rare-earth oxides (REOs) maypromote affinity to hydrophobic non-polar species, thus improving photocatalytic activity. Thepresent work was focused on the kinetics of photocatalytic degradation of the polar AcidOrange 7 (AO7) and of the non-polar herbicide monuron (3-(4-chlorophenyl)-1, 1-dimethylurea) and its degradation intermediates in the presence of composite TiO2 filmscontaining SiO2 binder and different REOs (CeO2, La2O3, Er2O3, Yb2O3). The addition ofREOs particles into the TiO2/SiO2 composite matrix resulted in an increase in the initialdegradation rate of monuron from 2.1 nmol min−1 cm−2 to 2.7 - 3.0 nmol min−1 cm−2.Furthermore, the ratios between the initial degradation rates of monuron to those of AO7 weresignificantly higher for composite films containing REOs showing a positive effect on theremoval of the non-polar monuron molecules for all REOs. A comparison between the kineticswith the various types of photocatalysts reveals that the positive impact of SiO2 and that ofSiO2/REOs on the kinetics was not limited to the conversion of monuron, but to the overallmineralization. The main novelty represents the fact although the rate of TOC decrease variedamong photocatalysts, the kinetics of intermediates is not significantly influenced

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

10402 - Inorganic and nuclear chemistry

Project

<a href="/en/project/LTAIZ19011" target="_blank" >LTAIZ19011: Nano particulate photocatalysts embedded in hydrophobic matrices for treatment of turbid wastewater containing non-polar, non-biodegradable compounds</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2023

Confidentiality

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

Name of the periodical

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY

ISSN

1010-6030

e-ISSN

1873-2666

Volume of the periodical

445

Issue of the periodical within the volume

115025

Country of publishing house

CH - SWITZERLAND

Number of pages

9

Pages from-to

1-9

UT code for WoS article

001116838100001

EID of the result in the Scopus database

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