One-Pot Synthesis Of A Ceria-Graphene Oxide Composite For The Efficient Removal Of Arsenic Species

Abstract

Arsenic contamination has posed a health risk to millions of people around the world. In this study, we describe a simple and facile one-step hydrothermal synthesis of a ceria-graphene oxide (ceria-GO) composite for the efficient removal of arsenic species. The prepared ceria-GO composite materials exhibited almost complete (over 99.99%) and quick removal of both arsenic species within 0.1 mg L-1 of the initial concentration. The calculated adsorption capacities were 185 mg g-1 for As(iii) and 212 mg g-1 for As(v). It was found that Ce3+ is an active site and continuously adsorbs arsenic species; there is a concomitant change from Ce4+ to Ce3+ due to the solution redox environment. This increase in the Ce3+ concentration further facilitates the complete removal of arsenic species in solution. Thus our approach offers a promising potential for the treatment of arsenic-contaminated drinking water.

Publication Date

3-14-2017

Publication Title

Nanoscale

Volume

9

Issue

10

Number of Pages

3367-3374

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1039/c6nr07608d

Socpus ID

85014939860 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/85014939860

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