title: Graphene Aerogels Decorated with α-FeOOH Nanoparticles for Efficient Adsorption of Arsenic from Contaminated Waters.
abstract: Arsenic (As) is the world's most hazardous chemical found in drinking water of many countries; therefore, there is an urgent need for the development of low-cost adsorbents for its removal. Here, we report a highly versatile and synthetic route for the preparation of a three-dimensional (3D) graphene-iron oxide nanoparticle aerogel composite for the efficient removal of As from contaminated water. This unique three-dimensional (3D) interconnected network was prepared from natural graphite rocks with a simple reaction, without the use of harsh chemicals, which combines with the exfoliation of graphene oxide (GO) sheets via the reduction of ferrous ion to form a graphene aerogel composite decorated with iron oxide nanoparticles. The prepared adsorbent showed outstanding absorption performance for the removal of As from contaminated water, because of its high surface-to-volume ratio and characteristic pore network in the 3D architecture. The performed case study using real drinking water contaminated with As under batch conditions showed successful removal of arsenic to the concentration recommended by the World Health Organisation (WHO).
authors: †Innovation Center of the Faculty of Chemistry, University of Belgrade, Studentski Trg 12-16, Belgrade, Serbia.|‡School of Chemical Engineering, The University of Adelaide, Adelaide, SA 5005, Australia.
authors: Ivan
authors: I
authors: Andjelkovic
authors: ‡School of Chemical Engineering, The University of Adelaide, Adelaide, SA 5005, Australia.
authors: Diana N H
authors: DN
authors: Tran
authors: ‡School of Chemical Engineering, The University of Adelaide, Adelaide, SA 5005, Australia.
authors: Shervin
authors: S
authors: Kabiri
authors: ‡School of Chemical Engineering, The University of Adelaide, Adelaide, SA 5005, Australia.
authors: Sara
authors: S
authors: Azari
authors: §Institute of Chemistry, Technology and Metallurgy, Center of Chemistry, University of Belgrade, Njegoseva 12, Belgrade, Serbia.
authors: Marijana
authors: M
authors: Markovic
authors: ‡School of Chemical Engineering, The University of Adelaide, Adelaide, SA 5005, Australia.
authors: Dusan
authors: D
authors: Losic
keywords: adsorption; aerogel; arsenic; graphene; α-FeOOH nanoparticles