Efficient removal of hexavalent chromium from water by an adsorption-reduction mechanism with sandwiched nanocomposites.

ABSTRACT: Hexavalent chromium Cr(vi), one of the most toxic contaminants, is released in the environment due to various anthropogenic activities. This study presents a novel sandwiched nanocomposite synthesized using graphene oxide (GO), manganese dioxide (MnO₂) nanowires, iron oxide (Fe₃O₄) nanoparticles and polypyrrole (PPy) to remove hexavalent chromium ion Cr(vi) from water by an adsorption-reduction mechanism. In the sandwiched nanocomposites, GO provided enough surface area, functional groups, and hydrophilic surface for efficient absorption. Fe₃O₄ nanoparticles with excellent magnetic properties make it easy to separate and recover from water. Under acidic conditions, MnO₂ nanowires act as both template and oxidant to initiate

SUBMITTER: Liu W 

PROVIDER: S-EPMC9080019 | biostudies-literature | 2018 Apr

REPOSITORIES: biostudies-literature