Open AccessGreen sol–gel synthesis of CoMnCrO 4 spinel nanoparticles and their photocatalytic application
Author(s) -
Moradnia Farzaneh,
Taghavi Fardood Saeid,
Ramazani Ali,
Osali Samira,
Abdolmaleki Ilnaz
Publication year - 2020
Publication title -
micro and nano letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.25
H-Index - 31
ISSN - 1750-0443
DOI - 10.1049/mnl.2020.0189
Subject(s) - spinel , photocatalysis , materials science , diffuse reflectance infrared fourier transform , rietveld refinement , scanning electron microscope , crystallite , nanoparticle , transmission electron microscopy , diffuse reflection , visible spectrum , fourier transform infrared spectroscopy , powder diffraction , spectroscopy , analytical chemistry (journal) , nuclear chemistry , chemical engineering , nanotechnology , optics , chemistry , crystallography , catalysis , crystal structure , optoelectronics , chromatography , metallurgy , organic chemistry , composite material , physics , engineering , quantum mechanics
CoMnCrO 4 spinel nanoparticles were prepared using the green and efficient sol–gel method. The synthesised nanoparticles were fully characterised by Fourier‐transform infrared spectroscopy, X‐ray powder diffraction with Rietveld refinement, transmission electron microscopy, scanning electron microscopy, and diffuse reflectance spectroscopy analysis. The characterisation of the sample showed that the CoMnCrO 4 NPs have a spinel cubic structure with a crystallite size of 14 nm, narrow bandgap (1.75 eV), and uniform spherical morphology with particle size about 25–30 nm. The CoMnCrO 4 NPs demonstrated high photocatalysis capability towards the Congo red dye as a pollutant with a high and fast efficiency degradation of 90% after 30 min under the visible light irradiation. Also, the impacts of different parameters consisting of nanoparticle amount, initial dye concentration, irradiation time, light and dark on dye degradation efficiency were assessed.