Supramolecular precursor derived loofah sponge-like Fe2Ox/C for effective synergistic reaction of Fenton and photocatalysis

Fenton or photocatalytic degradations of organic contaminants are recognized as promising approaches to address the increasing environmental pollution issues. Herein, we develop effective synergistic catalysis reaction and photocatalysis based on a loofah sponge-like Fe2Ox/C nanocomposite, which exhibits excellent nitrobenzene degradation property. It is noted that Fe2O3 nanoparticles with surface Fe2+ species were encapsulated an ultrathin carbon layer (denoted Fe2Ox/C) via supramolecular self-sacrificing template following thermal treatment process. The experimental results indicated thin coating not only inhibited Fe iron leaching from Fe2Ox but also prompted separation transferring electrons-hole pairs. introduction enables induce rapid Fe2+/Fe3+ cycle, meanwhile, together produce continuous active substances for subsequent catalytic without successive H2O2, resulting in inexpensive procedure. As result, 100% (100 mg/L) was degraded 97% mineralized 90 min using (0.1 g/L) at low H2O2 dosage (0.50 mM), under air mass (AM) 1.5 irradiation. Theoretical calculations confirmed Fe2Ox/C-600 promoted dissociation ·OH desorption. this work may provide new ideas low-cost more efficient pollutants.