Add time:08/26/2019         Source:sciencedirect.com

Fenton-like reaction has been widely used to decompose organic pollutants via heterogeneous catalysis mechanism. Graphene-based materials have attracted lots of attention in catalysis process, but the catalysis efficiency and stability of these materials are still needed to improve. In this work, a new type of polyamine-modified reduced graphene oxide (rGO) nanocomposite has been obtained through a facile synthesis process, wherein rGO was chemically anchored by Triethylenetetramine (cas 112-24-3) (TETA) molecules via nucleophilic reaction, forming rGO-TETA intermediate compounds that binds to Fe3O4 nanoparticles by forming stable chelating bonds, finally resulting in rGO-TETA-Fe3O4 nanocomposite. This new material exhibits remarkable catalysis ability to degrade azo type dye - Acid Orange 7 dye (AO7) and excellent reusability in 10 cycles, since H2O2 decomposition rate, electron transfer and material stability have been highly promoted by the unique structure of this nanocomposite.

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