Green sol–gel synthesis of CoMnCrO 4 spinel nanoparticles and their photocatalytic application

Micro & nano letters

article

Farzaneh Moradnia¹  Saeid Taghavi Fardood¹  Ali Ramazani¹  Samira Osali¹  Ilnaz Abdolmaleki³ 

[1] Department of Chemistry, University of Zanjan;Research Institute of Modern Biological Techniques (RIMBT), University of Zanjan;Department of Science, Payame Noor University (PNU)

关键词: dyes;    X-ray diffraction;    nanofabrication;    particle size;    X-ray chemical analysis;    transmission electron microscopy;    nanoparticles;    scanning electron microscopy;    sol-gel processing;    crystallites;    photocatalysis;    cobalt compounds;    manganese compounds;    Fourier transform infrared spectra;    optical constants;    CoMnCrO4 spinel nanoparticles;    green sol–gel method;    Fourier-transform infrared spectroscopy;    X-ray powder diffraction;    transmission electron microscopy;    diffuse reflectance spectroscopy analysis;    spinel cubic structure;    photocatalytic application;    Rietveld refinement;    scanning electron microscopy;    crystallite size;    uniform spherical morphology;    particle size;    narrow bandgap;    Congo red dye;    visible light irradiation;    dye concentration;    dye degradation efficiency;    electron volt energy 1.75 eV;    time 30.0 min;    CoMnCrO4;   

DOI  :  10.1049/mnl.2020.0189

学科分类：计算机科学（综合）

来源: Wiley

【 摘 要 】

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.

【 授权许可】

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