Issue 67, 2019, Issue in Progress
From the journal:

RSC Advances

The development of a ternary nanocomposite for the removal of Cr(vi) ions from aqueous solutions

Azza Shokry, ORCID logo *a   Ayman El Tahan,b   Hesham Ibrahim,a   Moataz Solimanc  and  Shaker Ebrahimc  

* Corresponding authors

a Department of Environmental Studies, Institute of Graduate Studies and Research, Alexandria University, P.O. Box 832 163 Horreya Avenue, El-Shatby, Alexandria, Egypt
E-mail: azzashokry@alexu.edu.eg

b Department of Physics, Faculty of Science, Tanta University, P.O. Box 44519, Tanta, Egypt

c Department of Materials Science, Institute of Graduate Studies and Research, Alexandria University, P.O. Box 832, Alexandria, Egypt

Abstract

The aim of this study is to develop a ternary nanocomposite (NC) of polyaniline (PANI)/2-acrylamido-2-methylpropanesulfonic acid (AMPSA)-capped silver nanoparticles (NPs)/graphene oxide quantum dots (PANI/Ag (AMPSA)/GO QDs) as an efficient adsorbent for the removal of the highly toxic hexavalent chromium (Cr(VI)) from polluted water. PANI/Ag (AMPSA)/GO QDs NC was synthesized via in situ oxidative polymerization. The effects of pH, adsorbent dose, initial concentration, temperature, contact time, ionic strength and co-existing ions on the removal of Cr(VI) by PANI/Ag (AMPSA)/GO QDs were investigated. The PANI/Ag (AMPSA)/GO QDs NC (25.0 mg) removed 99.9% of Cr(VI) from an aqueous solution containing 60 mg L−1 Cr(VI) ions at pH 2. Energy dispersive X-ray (EDX) and inductively coupled plasma spectrometry (ICP) studies confirmed the adsorption of Cr(VI) and that some of the adsorbed Cr(VI) was reduced to Cr(III). Cr(VI) removal by the PANI/Ag (AMPSA)/GO QDs NC followed the pseudo-second order kinetic model, and the removal was highly selective for Cr(VI) in the presence of other co-existing ions. In summary, the PANI/Ag (AMPSA)/GO QDs NC has potential as a novel adsorbent for Cr(VI).

Graphical abstract: The development of a ternary nanocomposite for the removal of Cr(vi) ions from aqueous solutions

About
Cited by
Related
Download options Please wait...

Article information

DOI
https://doi.org/10.1039/C9RA08298K
Article type
Paper
Submitted
11 Oct 2019
Accepted
14 Nov 2019
First published
28 Nov 2019
This article is Open Access
Creative Commons BY license

RSC Adv., 2019,9, 39187-39200

Permissions

Request permissions

The development of a ternary nanocomposite for the removal of Cr(VI) ions from aqueous solutions

A. Shokry, A. El Tahan, H. Ibrahim, M. Soliman and S. Ebrahim, RSC Adv., 2019, 9, 39187 DOI: 10.1039/C9RA08298K

This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. You can use material from this article in other publications without requesting further permissions from the RSC, provided that the correct acknowledgement is given.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements