Activation of Peroxydisulfate by Ferrite Materials for Phenol Degradation
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F19%3A73595172" target="_blank" >RIV/61989592:15310/19:73595172 - isvavai.cz</a>
Result on the web
<a href="https://pubs.acs.org/doi/10.1021/acssuschemeng.8b05257" target="_blank" >https://pubs.acs.org/doi/10.1021/acssuschemeng.8b05257</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1021/acssuschemeng.8b05257" target="_blank" >10.1021/acssuschemeng.8b05257</a>
Alternative languages
Result language
angličtina
Original language name
Activation of Peroxydisulfate by Ferrite Materials for Phenol Degradation
Original language description
Persulfates such as peroxydisulfate (PDS) are among the most widely applied oxidants for breaking down organic contaminants in water. The oxidation power arises from conversion of persulfate to sulfate radical or other reactive oxidants. Ferrite materials are good candidates for catalytic activation of persulfate owing to its ability to incorporate a variety of transition metals in the structure, stability against aqueous dissolution, and magnetic susceptibility allowing catalyst separation and reuse. In this study, ferrite spinels incorporating zinc, nickel, cobalt, or copper were synthesized with an epoxide-driven sol-gel method and were annealed at 350 and 700 degrees C, respectively. The particles were evaluated for activating PDS using phenol as a model organic contaminant. Cu-ferrite annealed at the low temperature (350 degrees C) was identified to be the most active ferrite for PDS activation. This solid consists of predominantly CuFe2O4, while at the higher annealing temperature, decomposition of CuFe2O4 to Fe2O3 and CuO and significant increase in particle size resulted in severe loss of PDS activation ability. Remarkable increases in phenol oxidation rate were observed above pH 9.0 and were attributed to PDS activation by phenoxide. The presence of methanol, bicarbonate, or chloride ion (1-5 mM) significantly slowed down phenol oxidation, whereas the addition of tert-butyl alcohol did not affect the degradation rate, indicating the dominant oxidant is sulfate radical. Comparison of Cu-ferrite against reference metal oxides suggests that the catalytic performance of Cu(II) sites in the ferrite phase is comparable to those in the highly active but leachable CuO, and Cu-ferrite demonstrated good reusability during repeated phenol oxidation experiments.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10403 - Physical chemistry
Result continuities
Project
<a href="/en/project/EF16_019%2F0000754" target="_blank" >EF16_019/0000754: Nanotechnologies for Future</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
ACS Sustainable Chemistry & Engineering
ISSN
2168-0485
e-ISSN
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Volume of the periodical
7
Issue of the periodical within the volume
9
Country of publishing house
US - UNITED STATES
Number of pages
10
Pages from-to
8099-8108
UT code for WoS article
000467351200012
EID of the result in the Scopus database
2-s2.0-85064986055