FexCo3-xO4 nanoporous particles stemmed from metal-organic frameworks Fe3[Co(CN)6]2: A highly efficient material for removal of organic dyes from water

A novel facile strategy has been designed to fabricate FexCo3-xO4 porous nanostructure, which involves a morphology conserved and pyrolysis-induced transformation of Prussian Blue Analogue (PBA) Fe-3[Co(CN)(6)](2) center dot nH(2)O nanoparticles. Owing to the release of born gases during the process of thermal decomposition, FexCo3-xO4 nanoporous particles with a relatively high surface area of 81 m(2) g(-1) were effectively obtained. Most importantly, when evaluate as the adsorbent for Congo red in water, the FexCo3-xO4 nanoporous particles not only exhibit a high adsorption capacity (84 mg/g) for the dye removal, but also are feasible for the fast recyclable treatment via a simple magnetic separation, suggesting their potential application in water treatment. The excellent adsorption abilities of FexCo3-xO4 particles is attributed to the beneficial features of porous nanostructure and large surface area, which facilitate dye access into the inner of materials with sufficient active sites. (C) 2013 Elsevier B.V. All rights reserved.