Self-assembled graphene oxide with organo-building blocks of Fe-aminoclay for heterogeneous Fenton-like reaction at near-neutral pH: A batch experiment

摘要: a b s t r c Respective water-soluble graphene oxide (GO) and Fe-aminoclay were investigated for decoloration of recalcitrant organic dyes with different charges in the presence hydrogen peroxide (H2O2). This oxida- tion process was updated order to enable development heterogeneous catalysts by self-assembled (precipitated) GO organo-building blocks aqueous solution. Due electrostatic attraction between negatively charged positively Fe-aminoclay, obtained decomposed H2O2 at pH 6.0 generate • OH radicals capable breaking aromatic carbon structures. These novel tested cationic methylene blue (MB) anionic orange II (OII) as model pollutants. At 1.0 wt% treatment, apparent rate constants MB OII optimal loading catalyst (0.61 mg/mL) 0.35288 h−1 (r2 = 0.9721) 0.57930 0.9581), respectively. Furthermore, two-dye mixture system, simultaneous both dyes, near-complete ∼100% removal, achieved after 5 h. Thus, it can be concluded that our developed Fenton-like reaction neutral are suitable practical application. © 2013 Elsevier B.V. All rights reserved.