Catalytic oxidation of methylene blue by use of natural zeolite-based silver and magnetite nanocomposites

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dc.contributor.author Kuntubek, Aldiyar
dc.contributor.author Kinayat, Nurassyl
dc.contributor.author Meiramkulova, Kulyash
dc.contributor.author Poulopoulos, Stavros G.
dc.contributor.author Bear, Joseph C.
dc.contributor.author Inglezakis, Vassilis J.
dc.date.accessioned 2020-09-11T10:14:21Z
dc.date.available 2020-09-11T10:14:21Z
dc.date.issued 2020-04-01
dc.identifier.isbn DOI: 10.3390/PR8040471
dc.identifier.issn 22279717
dc.identifier.uri http://repository.enu.kz:8080/handle/data/16095
dc.description.abstract This work reports the synthesis of natural zeolite-based silver and magnetite nanocomposites and their application for the catalytic oxidation of methylene blue in water. The zeolite was impregnated with 5.5 wt. % Fe in the form of magnetite nanoparticles with size of 32 nm, and with 6.4 wt. % Ag in the form of silver oxide and metallic silver nanoparticles with sizes of 42 and 20 nm, respectively. The results showed that physical adsorption contributed to the removal of methylene blue by 25-36% and that Fe3O4@NZU is superior to Ag2O@NZU and Ag0@NZU, leading to 55% removal without oxidant and 97% in the presence of H2O2. However, there is no evidence of significant mineralization of methylene blue. The application of reaction rate models showed that the reaction order changes from zero to first and second order depending on the H2O2 concentration. © 2020 by the authors. ru_RU
dc.language.iso en ru_RU
dc.publisher Processes ru_RU
dc.relation.ispartofseries Volume 8, Issue 4;Номер статьи 471
dc.subject zeolites ru_RU
dc.subject clinoptilolite ru_RU
dc.subject methylene blue ru_RU
dc.subject oxidation ru_RU
dc.subject nanoparticles ru_RU
dc.subject silver ru_RU
dc.subject silver oxide ru_RU
dc.subject magnetite ru_RU
dc.title Catalytic oxidation of methylene blue by use of natural zeolite-based silver and magnetite nanocomposites ru_RU
dc.type Article ru_RU


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