Synthetic sodalite doped with silver nanoparticles

Characterization and mercury (II) removal from aqueous solutions

P E Tsakiridis, D Shah, V J Inglezakis

Research output: Contribution to journalArticle

Abstract

In this work, a novel silver nanoparticles-doped synthetic sodalitic composite was synthesized and characterized using advanced characterization methods, namely TEM-EDS, XRD, SEM, XRF, BET, zeta potential, and particle size analysis. The synthesized nanocomposite was used for the removal of Hg2+ from 10 ppm aqueous solutions of initial pH equal to 2. The results showed that the sodalitic nanocomposites removed up to 98.65% of Hg2+, which is ∼16% and 70% higher than the removal achieved by sodalite and parent coal fly ash, respectively. The findings revealed that the Hg2+ removal mechanism is a multifaceted mechanism that predominantly involves adsorption, precipitation and Hg-Ag amalgamation. The study of the anions effect (Cl-, NO3-, C2H3O2-, and SO42-) indicated that the Hg2+ uptake is comparatively higher when Cl- anions co-exist with Hg2+ in the solution.

Original languageEnglish
Pages (from-to)1-9
Number of pages9
JournalJournal of Environmental Science and Health - Part A Toxic/Hazardous Substances and Environmental Engineering
DOIs
Publication statusE-pub ahead of print - May 6 2019

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Silver
Nanoparticles
Nanocomposites
Negative ions
Zeta potential
Fly ash
Particle size analysis
Energy dispersive spectroscopy
Coal
Transmission electron microscopy
Adsorption
Scanning electron microscopy
Composite materials

Cite this

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title = "Synthetic sodalite doped with silver nanoparticles: Characterization and mercury (II) removal from aqueous solutions",
abstract = "In this work, a novel silver nanoparticles-doped synthetic sodalitic composite was synthesized and characterized using advanced characterization methods, namely TEM-EDS, XRD, SEM, XRF, BET, zeta potential, and particle size analysis. The synthesized nanocomposite was used for the removal of Hg2+ from 10 ppm aqueous solutions of initial pH equal to 2. The results showed that the sodalitic nanocomposites removed up to 98.65{\%} of Hg2+, which is ∼16{\%} and 70{\%} higher than the removal achieved by sodalite and parent coal fly ash, respectively. The findings revealed that the Hg2+ removal mechanism is a multifaceted mechanism that predominantly involves adsorption, precipitation and Hg-Ag amalgamation. The study of the anions effect (Cl-, NO3-, C2H3O2-, and SO42-) indicated that the Hg2+ uptake is comparatively higher when Cl- anions co-exist with Hg2+ in the solution.",
author = "Tsakiridis, {P E} and D Shah and Inglezakis, {V J}",
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T1 - Synthetic sodalite doped with silver nanoparticles

T2 - Characterization and mercury (II) removal from aqueous solutions

AU - Tsakiridis, P E

AU - Shah, D

AU - Inglezakis, V J

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Y1 - 2019/5/6

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AB - In this work, a novel silver nanoparticles-doped synthetic sodalitic composite was synthesized and characterized using advanced characterization methods, namely TEM-EDS, XRD, SEM, XRF, BET, zeta potential, and particle size analysis. The synthesized nanocomposite was used for the removal of Hg2+ from 10 ppm aqueous solutions of initial pH equal to 2. The results showed that the sodalitic nanocomposites removed up to 98.65% of Hg2+, which is ∼16% and 70% higher than the removal achieved by sodalite and parent coal fly ash, respectively. The findings revealed that the Hg2+ removal mechanism is a multifaceted mechanism that predominantly involves adsorption, precipitation and Hg-Ag amalgamation. The study of the anions effect (Cl-, NO3-, C2H3O2-, and SO42-) indicated that the Hg2+ uptake is comparatively higher when Cl- anions co-exist with Hg2+ in the solution.

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