TY - JOUR
T1 - Multifunctional photocatalytic degradation of methylene blue using LaMnO3/Fe3O4 nanocomposite on different types of graphene
AU - Susanti, Yulia Dwi
AU - Afifah, Nur
AU - Saleh, Rosari
N1 - Publisher Copyright:
© Published under licence by IOP Publishing Ltd.
PY - 2017/4/5
Y1 - 2017/4/5
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=85017561944&partnerID=8YFLogxK
U2 - 10.1088/1742-6596/820/1/012021
DO - 10.1088/1742-6596/820/1/012021
M3 - Conference article
AN - SCOPUS:85017561944
SN - 1742-6588
VL - 820
JO - Journal of Physics: Conference Series
JF - Journal of Physics: Conference Series
IS - 1
M1 - 012021
T2 - 5th International Conference on Science and Engineering in Mathematics, Chemistry and Physics 2017, ScieTech 2017
Y2 - 21 January 2017 through 22 January 2017
ER -