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

Aldiyar Kuntubek; Nurassyl Kinayat; Kulyash Meiramkulova; Stavros G. Poulopoulos; Joseph C. Bear; Vassilis J. Inglezakis

doi:10.3390/PR8040471

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

Aldiyar Kuntubek, Nurassyl Kinayat, Kulyash Meiramkulova, Stavros G. Poulopoulos, Joseph C. Bear, Vassilis J. Inglezakis

Nazarbayev University

Research output: Contribution to journal › Article › peer-review

13 Citations (Scopus)

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.

Original language	English
Article number	471
Journal	Processes
Volume	8
Issue number	4
DOIs	https://doi.org/10.3390/PR8040471
Publication status	Published - Apr 1 2020

Keywords

Clinoptilolite
Magnetite
Methylene blue
Nanoparticles
Oxidation
Silver
Silver oxide
Zeolites

ASJC Scopus subject areas

Bioengineering
Chemical Engineering (miscellaneous)
Process Chemistry and Technology

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10.3390/PR8040471

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title = "Catalytic oxidation of methylene blue by use of natural zeolite-based silver and magnetite nanocomposites",

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.",

keywords = "Clinoptilolite, Magnetite, Methylene blue, Nanoparticles, Oxidation, Silver, Silver oxide, Zeolites",

author = "Aldiyar Kuntubek and Nurassyl Kinayat and Kulyash Meiramkulova and Poulopoulos, {Stavros G.} and Bear, {Joseph C.} and Inglezakis, {Vassilis J.}",

note = "Funding Information: This research was funded Nazarbayev University, Grant Number 110119FD4536 and Kingston University c/o GCRF Grant Number P2034-106. The APC was funded by Nazarbayev University. The authors would like to thank the University of Alicante for the XPS analysis. Funding Information: Funding: This research was funded Nazarbayev University, Grant Number 110119FD4536 and Kingston University c/o GCRF Grant Number P2034-106. The APC was funded by Nazarbayev University. Publisher Copyright: {\textcopyright} 2020 by the authors.",

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doi = "10.3390/PR8040471",

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journal = "Processes",

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T1 - Catalytic oxidation of methylene blue by use of natural zeolite-based silver and magnetite nanocomposites

AU - Kuntubek, Aldiyar

AU - Kinayat, Nurassyl

AU - Meiramkulova, Kulyash

AU - Poulopoulos, Stavros G.

AU - Bear, Joseph C.

AU - Inglezakis, Vassilis J.

N1 - Funding Information: This research was funded Nazarbayev University, Grant Number 110119FD4536 and Kingston University c/o GCRF Grant Number P2034-106. The APC was funded by Nazarbayev University. The authors would like to thank the University of Alicante for the XPS analysis. Funding Information: Funding: This research was funded Nazarbayev University, Grant Number 110119FD4536 and Kingston University c/o GCRF Grant Number P2034-106. The APC was funded by Nazarbayev University. Publisher Copyright: © 2020 by the authors.

PY - 2020/4/1

Y1 - 2020/4/1

N2 - 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.

AB - 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.

KW - Clinoptilolite

KW - Magnetite

KW - Methylene blue

KW - Nanoparticles

KW - Oxidation

KW - Silver

KW - Silver oxide

KW - Zeolites

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

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