Multifunctional photocatalytic degradation of methylene blue using LaMnO3/Fe3O4 nanocomposite on different types of graphene

Yulia Dwi Susanti, Nur Afifah, Rosari Saleh

Research output: Contribution to journalConference article

6 Citations (Scopus)

Abstract

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.

Original languageEnglish
Article number012021
JournalJournal of Physics: Conference Series
Volume820
Issue number1
DOIs
Publication statusPublished - 5 Apr 2017
Event5th International Conference on Science and Engineering in Mathematics, Chemistry and Physics 2017, ScieTech 2017 - Kuta, Bali, Indonesia
Duration: 21 Jan 201722 Jan 2017

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