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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 2024-09-13T04:59:51Z
dc.date.available 2024-09-13T04:59:51Z
dc.date.issued 2020
dc.identifier.issn 2227-9717
dc.identifier.other doi:10.3390/pr8040471
dc.identifier.uri http://rep.enu.kz/handle/enu/16292
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 ru
dc.language.iso en ru
dc.publisher Processes ru
dc.relation.ispartofseries Volume 8;Issue 4
dc.subject zeolites ru
dc.subject clinoptilolite ru
dc.subject methylene blue ru
dc.subject oxidation ru
dc.subject nanoparticles ru
dc.subject silver ru
dc.subject silver oxide ru
dc.subject magnetite ru
dc.title Catalytic Oxidation of Methylene Blue by Use of Natural Zeolite-Based Silver and Magnetite Nanocomposites ru
dc.type Article ru


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