This study added different types of graphene (GN-1 and GN-2) in to LaMnO3/Fe3O4 nanocomposite to degrade MB as an organic pollutant. LaMnO3/Fe3O4/GN-1 and LaMnO3/Fe3O4/GN-2 composites were synthesized using the co-precipitation method in a constant 5 wt% of GN. The as-prepared samples were characterized using XRD and TGA. The LaMnO3/Fe3O4/GN-1 and LaMnO3/Fe3O4/GN-2 composites showed the orthorhombic structure of LaMnO3 nanoparticles and the cubic spinel of Fe3O4 nanoparticles, as well as of GN-1 and GN-2. The graphite structure of NGP in LaMnO3/Fe3O4/GN-1 composites was confirmed. However, the peak of graphene in LaMnO3/Fe3O4/GN-2 could not be identified. The photocatalytic efficiency of the LaMnO3/Fe3O4/GN-2 was higher than that of LaMnO3/Fe3O4/GN-1. The enhancement of the photocatalytic light activity can be attributed to the high separation efficiency of electron-hole recombination and to the large surface contact between LaMnO3/Fe3O4 and graphene, which can improve the transfer efficiency of the photocatalytic process. In addition, the effects of catalyst dosage, rate constant, and scavengers were investigated and discussed.
|Journal||Journal of Physics: Conference Series|
|Publication status||Published - 5 Apr 2017|
|Event||5th International Conference on Science and Engineering in Mathematics, Chemistry and Physics 2017, ScieTech 2017 - Kuta, Bali, Indonesia|
Duration: 21 Jan 2017 → 22 Jan 2017