Open AccessPreparation of LaMnO3/TiO2/NGP composites for methylene blue dye removal via adsorption and photosonocatalysis
Author(s) -
Yulia Susanti,
Nur Afifah,
Rosari Saleh
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1725/1/012003
Subject(s) - methylene blue , materials science , adsorption , raman spectroscopy , composite material , degradation (telecommunications) , precipitation , nuclear chemistry , chemical engineering , catalysis , chemistry , photocatalysis , organic chemistry , engineering , telecommunications , physics , meteorology , computer science , optics
In this study, LaMnO 3 /TiO 2 /nanographene platelet (NGP) composites with different loadings (3, 5, and 10 wt.%) of NGP were successfully synthesized by co-precipitation. The as-prepared composites were characterized by X-ray diffraction (XRD) and Raman spectroscopy. The XRD patterns confirmed the combination of the desired nanoparticles. The Raman spectra of the LaMnO 3 /TiO 2 /NGP composites revealed the D-and G-band structures of NGP. Furthermore, the composites were investigated for the degradation of methylene blue (MB) via adsorption and photosonocatalysis. The maximum degradation of MB via adsorption was achieved at 10 wt.% NGP loading in LaMnO 3 /TiO 2 /NGP, whereas for photosonocatalysis, the maximum degradation of MB was observed at 5 wt.% NGP loading. In addition, the pseudo-first-order and second-order adsorption kinetic models and the effect of scavengers on photosonocatalysis were evaluated.