Open AccessEfficient degradation of picric acid using rGO-MnO2 hybrid nanocomposite under different light conditions
Author(s) -
B. Usharani,
V. Manivannan,
P. Shanmugasundaram
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 - 10.1088/1742-6596/2070/1/012089
Subject(s) - picric acid , nanocomposite , x ray photoelectron spectroscopy , photocatalysis , materials science , visible spectrum , fourier transform infrared spectroscopy , degradation (telecommunications) , scanning electron microscope , nuclear chemistry , ultraviolet light , chemical engineering , catalysis , chemistry , nanotechnology , organic chemistry , composite material , optoelectronics , telecommunications , computer science , engineering
Picric acid is a very dangerous environmental pollutant generated from chemical and dye industries due to its high toxicity. Therefore, efforts have been made to develop techniques for the efficient degradation of picric acid. A novel rGO-MnO 2 nanocomposite has been synthesized by chemical method for the degradation of picric acid in various light medium. The rGO-MnO 2 nanocomposite was characterized by X-ray Photoelectron Spectroscopy (XPS), Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), Energy dispersive X-ray (EDAX), Ultraviolet-visible (UV-Vis) and Scanning electron microscope (SEM). The synthesized, pure rGO, MnO 2 and rGO-MnO 2 nanocomposite catalyst have been studied for the activity of photocatalytic degradation against picric acid under different light sources such as UV light (254,365,390 nm), visible light and sunlight. It is found that rGO-MnO 2 has achieved better performance compared to that of pure rGO, MnO 2 .