Surface interactions and mechanisms study on the removal of iodide from water by use of natural zeolite-based silver nanocomposites

Vassilis J. Inglezakis; Aliya Satayeva; Almira Yagofarova; Zhandos Tauanov; Kulyash Meiramkulova; Judit Farrando-Pérez; Joseph C. Bear

doi:10.3390/nano10061156

Surface interactions and mechanisms study on the removal of iodide from water by use of natural zeolite-based silver nanocomposites

Vassilis J. Inglezakis, Aliya Satayeva, Almira Yagofarova, Zhandos Tauanov, Kulyash Meiramkulova, Judit Farrando-Pérez, Joseph C. Bear

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Abstract

In this work a natural zeolite was modified with silver following two different methods to derive Ag2O and Ag0 nanocomposites. The materials were fully characterized and the results showed that both materials were decorated with nanoparticles of size of 5-25 nm. The natural and modified zeolites were used for the removal of iodide from aqueous solutions of initial concentration of 30-1400 ppm. Natural zeolite showed no affinity for iodide while silver forms were very efficient reaching a capacity of up to 132 mg/g. Post-adsorption characterizations showed that AgI was formed on the surface of the modified zeolites and the amount of iodide removed was higher than expected based on the silver content. A combination of experimental data and characterizations indicate that the excess iodide is most probably related to negatively charged AgI colloids and Ag-I complexes forming in the solution as well as on the surface of the modified zeolites.

Original language	English
Article number	e1156
Journal	Nanomaterials
Volume	10
Issue number	6
Early online date	12 Jun 2020
DOIs	https://doi.org/10.3390/nano10061156
Publication status	Published - 12 Jun 2020

Bibliographical note

Note: This work was supported by Nazarbayev University under the project entitled ‟Noble metals nanocomposites hyper-activity in heterogeneous non-catalytic and catalytic reactions”, [grant number: 110119FD4536], European Commission HORIZON 2020 project ‟Nanoporous and Nanostructured Materials for Medical Applications (NanoMed)”, H2020-MSCA-RISE-2016, 734641 and Kingston University GCRF [grant number: P2034-106].

Keywords

Chemistry
iodide removal
nanocomposites
natural zeolite
silver nanoparticles
silver oxide

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Bear-J-C-45758-VoRFinal published version, 3.29 MBLicence: CC BY

https://doi.org/10.3390/nano10061156

Cite this

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title = "Surface interactions and mechanisms study on the removal of iodide from water by use of natural zeolite-based silver nanocomposites",

abstract = "In this work a natural zeolite was modified with silver following two different methods to derive Ag2O and Ag0 nanocomposites. The materials were fully characterized and the results showed that both materials were decorated with nanoparticles of size of 5-25 nm. The natural and modified zeolites were used for the removal of iodide from aqueous solutions of initial concentration of 30-1400 ppm. Natural zeolite showed no affinity for iodide while silver forms were very efficient reaching a capacity of up to 132 mg/g. Post-adsorption characterizations showed that AgI was formed on the surface of the modified zeolites and the amount of iodide removed was higher than expected based on the silver content. A combination of experimental data and characterizations indicate that the excess iodide is most probably related to negatively charged AgI colloids and Ag-I complexes forming in the solution as well as on the surface of the modified zeolites.",

keywords = "Chemistry, iodide removal, nanocomposites, natural zeolite, silver nanoparticles, silver oxide",

author = "Inglezakis, \{Vassilis J.\} and Aliya Satayeva and Almira Yagofarova and Zhandos Tauanov and Kulyash Meiramkulova and Judit Farrando-P{\'e}rez and Bear, \{Joseph C.\}",

note = "Note: This work was supported by Nazarbayev University under the project entitled ‟Noble metals nanocomposites hyper-activity in heterogeneous non-catalytic and catalytic reactions”, [grant number: 110119FD4536], European Commission HORIZON 2020 project ‟Nanoporous and Nanostructured Materials for Medical Applications (NanoMed)”, H2020-MSCA-RISE-2016, 734641 and Kingston University GCRF [grant number: P2034-106].",

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doi = "10.3390/nano10061156",

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TY - JOUR

T1 - Surface interactions and mechanisms study on the removal of iodide from water by use of natural zeolite-based silver nanocomposites

AU - Inglezakis, Vassilis J.

AU - Satayeva, Aliya

AU - Yagofarova, Almira

AU - Tauanov, Zhandos

AU - Meiramkulova, Kulyash

AU - Farrando-Pérez, Judit

AU - Bear, Joseph C.

N1 - Note: This work was supported by Nazarbayev University under the project entitled ‟Noble metals nanocomposites hyper-activity in heterogeneous non-catalytic and catalytic reactions”, [grant number: 110119FD4536], European Commission HORIZON 2020 project ‟Nanoporous and Nanostructured Materials for Medical Applications (NanoMed)”, H2020-MSCA-RISE-2016, 734641 and Kingston University GCRF [grant number: P2034-106].

PY - 2020/6/12

Y1 - 2020/6/12

N2 - In this work a natural zeolite was modified with silver following two different methods to derive Ag2O and Ag0 nanocomposites. The materials were fully characterized and the results showed that both materials were decorated with nanoparticles of size of 5-25 nm. The natural and modified zeolites were used for the removal of iodide from aqueous solutions of initial concentration of 30-1400 ppm. Natural zeolite showed no affinity for iodide while silver forms were very efficient reaching a capacity of up to 132 mg/g. Post-adsorption characterizations showed that AgI was formed on the surface of the modified zeolites and the amount of iodide removed was higher than expected based on the silver content. A combination of experimental data and characterizations indicate that the excess iodide is most probably related to negatively charged AgI colloids and Ag-I complexes forming in the solution as well as on the surface of the modified zeolites.

AB - In this work a natural zeolite was modified with silver following two different methods to derive Ag2O and Ag0 nanocomposites. The materials were fully characterized and the results showed that both materials were decorated with nanoparticles of size of 5-25 nm. The natural and modified zeolites were used for the removal of iodide from aqueous solutions of initial concentration of 30-1400 ppm. Natural zeolite showed no affinity for iodide while silver forms were very efficient reaching a capacity of up to 132 mg/g. Post-adsorption characterizations showed that AgI was formed on the surface of the modified zeolites and the amount of iodide removed was higher than expected based on the silver content. A combination of experimental data and characterizations indicate that the excess iodide is most probably related to negatively charged AgI colloids and Ag-I complexes forming in the solution as well as on the surface of the modified zeolites.

KW - Chemistry

KW - iodide removal

KW - nanocomposites

KW - natural zeolite

KW - silver nanoparticles

KW - silver oxide

U2 - 10.3390/nano10061156

DO - 10.3390/nano10061156

M3 - Article

SN - 2079-4991

VL - 10

JO - Nanomaterials

JF - Nanomaterials

IS - 6

M1 - e1156

ER -

Surface interactions and mechanisms study on the removal of iodide from water by use of natural zeolite-based silver nanocomposites

Abstract

Bibliographical note

Keywords

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