Degradation of atrazine by ZnxCu1 (-) xFe2O4 nanomaterial-catalyzed sulfite under UV-vis light irradiation: Green strategy to generate SO4 center dot(-)

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F18%3A73583091" target="_blank" >RIV/61989592:15310/18:73583091 - isvavai.cz</a>

Result on the web

<a href="http://www.sciencedirect.com/science/article/pii/S0926337317308263" target="_blank" >http://www.sciencedirect.com/science/article/pii/S0926337317308263</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.apcatb.2017.09.001" target="_blank" >10.1016/j.apcatb.2017.09.001</a>

Result language

angličtina

Original language name

Degradation of atrazine by ZnxCu1 (-) xFe2O4 nanomaterial-catalyzed sulfite under UV-vis light irradiation: Green strategy to generate SO4 center dot(-)

Original language description

Degradation of atrazine, a widely-used herbicide, by a novel advanced oxidation process was investigated through photo-catalyzing sulfite, the precursor of sulfate radical (SO4 center dot(-)) in this study, by zinc-copper ferrites (ZnxCu1 - xFe2O4) under UV-vis light irradiation. The ZnxCu1 - xFe2O4 with different ratios of Zn to Cu was synthesized through a facile sol-gel combustion method, and characterized by X-ray powder diffractometry, scanning electron microscopy, transmission electron microscopy, porosimetry, and UV-vis diffuse reflectance spectroscopy, and by a vibrating sample magnetometer and Mossbauer spectrometer. The Zn0.8Cu0.2Fe2O4 demonstrated the highest photocatalytic ability to activate sulfite for the degradation of atrazine under current experimental conditions. The sulfate radical generated in the UV-vis light/Zn0.8Cu0.2Fe2O4/qulfite system was identified as the main reactive species through radical quenching experiments and measuring two important byproducts (atrazine-desethyl and atrazine-desisopropyl). The XPS spectra of fresh and used catalysts were analyzed to further elucidate the reaction mechanisms. There are two possible approaches to produce SO4 center dot(-): the oxidation of sulfite by photo-generated holes and the accelerated decomposition of metal-sulfito complexes (Fe (III)-sulfito and Cu(II)-sulfito) on the surface of Zn0.8Cu0.2Fe2O4. Based on the detected byproducts, the transformation pathways of atrazine by UV-vis light/Zn0.8Cu0.2Fe2O4/sulfite were proposed as well. After the complete decomposition of atrazine, the used catalysts could be magnetically recovered using a magnet and no sulfite remained in the system. The results suggest that the UV-vis light/Zn0.8Cu0.2Fe2O4/sulfite system is a &quot;green&quot; advanced oxidation technology for future application in wastewater treatment.

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

—

OECD FORD branch

10403 - Physical chemistry

Project

<a href="/en/project/LO1305" target="_blank" >LO1305: Development of the center of advanced technologies and materials</a><br>

Continuities

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

Publication year

2018

Confidentiality

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

Name of the periodical

Applied Catalysis B: Environmental

ISSN

0926-3373

e-ISSN

—

Volume of the periodical

221

Issue of the periodical within the volume

FEB

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

13

Pages from-to

380-392

UT code for WoS article

000414109700039

EID of the result in the Scopus database

2-s2.0-85029679846