title: 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-1of the initial concentration. The calculated adsorption capacities were 185 mg g-1for As(iii) and 212 mg g-1for 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.
authors.affiliation: Advanced materials processing and analysis center (AMPAC), Nanoscience and Technology center (NSTC), Materials science and Engineering (MSE), University of Central Florida, Orlando, FL 32826, USA. Sudipta.Seal@ucf.edu.
authors.forename: Tamil S
authors.initials: TS
authors.lastname: Sakthivel
authors.affiliation: Advanced materials processing and analysis center (AMPAC), Nanoscience and Technology center (NSTC), Materials science and Engineering (MSE), University of Central Florida, Orlando, FL 32826, USA. Sudipta.Seal@ucf.edu.
authors.forename: Soumen
authors.initials: S
authors.lastname: Das
authors.affiliation: Department of Chemistry, Hope College, Holland, MI 49423, USA.
authors.forename: Cameron J
authors.initials: CJ
authors.lastname: Pratt
authors.affiliation: Advanced materials processing and analysis center (AMPAC), Nanoscience and Technology center (NSTC), Materials science and Engineering (MSE), University of Central Florida, Orlando, FL 32826, USA. Sudipta.Seal@ucf.edu and College of Medicine, University of Central Florida, Orlando, FL 32827, USA.
authors.forename: Sudipta
authors.initials: S
authors.lastname: Seal