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Enhanced removal of Nickel (II) ions from aqueous solutions by SDS-functionalized graphene oxide

Lookup NU author(s): Dr Elif Caliskan Salihi, Jiabin Wang, Professor Lidija Siller

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This work is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0).

Abstract

In this paper a one pot and easy-to-handle method at room temperature without additional chemicals for the modification of graphene oxide with surfactant is found. Removal of Nickel (II) ions from aqueous solutions by graphene oxide (GO) and surfactant (sodium dodecyl sulfate) modified graphene oxide (SDS-GO) was studied spectrophotometrically at room temperature as a function of time, initial concentration and pH. Adsorption capacity of the adsorbent was increased dramatically (from 20.19 mg/g to 55.16 mg/g found by Langmuir model) due to the functionalization of the surface by sodium dodecyl sulphate. The driving force of the adsorption of Ni (II) ions is electrostatic attraction and Ni (II) ions adsorbed on the GO surface chemically besides ion exchange.

Publication metadata

Author(s): Caliskan Salihi E, Wang J, Coleman DJL, Siller L

Publication type: Article

Publication status: Published

Journal: Separation Science and Technology

Year: 2016

Volume: 51

Issue: 8

Pages: 1317-1327

Online publication date: 22/03/2016

Acceptance date: 01/03/2016

Date deposited: 29/02/2016

ISSN (print): 0149-6395

ISSN (electronic): 1520-5754

Publisher: Taylor & Francis

URL: http://dx.doi.org/10.1080/01496395.2016.1162172

DOI: 10.1080/01496395.2016.1162172

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