期刊
JOURNAL OF CLUSTER SCIENCE
卷 34, 期 5, 页码 2381-2395出版社
SPRINGER/PLENUM PUBLISHERS
DOI: 10.1007/s10876-022-02392-6
关键词
Green chemistry; TEM; IONPs; Mossbauer spectroscopy; DC magnetometry; Catalytic activity
A green synthesis method using Coffea arabica L extract and iron salt precursor was used to obtain iron oxide nanoparticles, which showed potential application in wastewater treatment.
It is presented a green synthesis method to obtain hematite (or magnetite) as a function of the concentration of Coffea arabica L extract mixed with a single iron salt precursor. The crystal structure, microstructural and phase formation of the iron oxide nanoparticles were characterized by X-ray diffraction, transmission electron microscopy, Mossbauer spectroscopy and DC magnetometry. The particle sizes of the obtained nanoparticles are of the order of 5 nm. Optical properties were studied with UV-Vis spectroscopy from which a band gap energy of E-g = 3.09 eV for hematite and E-g = 3.23 eV for magnetite were deduced. The photocatalytic activity of the synthesized nanoparticles was tested by degradation of methyl orange dye under UV radiation, showing their potential application in wastewater treatment.
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