Abstract
The transition metal (Zn2+)-doped Co3O4 nanoparticle was tailored through thermal decomposition of precursor synthesized by simple co-precipitation which is an experimentally and economically comfortable method. The precursor was characterized using EDS, FTIR and thermogravimetric analysis. Also, the nano-sized metal oxide synthesized from its precursor was investigated by powder X-ray diffraction, X-ray photoelectron spectroscopy, high-resolution transmission electron microscopy, scanning electron microscopy. The specific surface area was scrutinized through Bruner–Emmet–Teller (BET) adsorption. The ferromagnetic property of the nanoparticle was detected using vibrating sample magnetometer. The photocatalytic degradation performance of nano ZnCo2O4 was evaluated using methyl orange (MO), rhodamine B (RhB) and Congo red (CR) dyes under sunlight. The nanoparticle demonstrated good photocatalytic activity towards azo dyes (MO and CR) rather than rhodamine (RhB)-based dye. The degradation of organic dyes was found to follow first-order kinetics.
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Acknowledgement
We are thankful to Kongunadu Arts and Science College for providing facilities. We also express our huge gratitude to CIT (Coimbatore), SAIF (Cochin), IIT (Madras), Karunya University (Coimbatore), Amrita Centre for Nanosciences and Molecular Medicine (AIMS, Cochin), CSIR – National Institute for Interdisciplinary Science and Technology (NIIST) Thiruvananthapuram, and BIT University (Bangalore) for providing instrument services.
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HEMAMALINI, S., MANIMEKALAI, R. Synthesis, physicochemical and photocatalytic activities of nano ZnCo2O4 catalyst for photodegradation of various dyes under sunlight irradiation. Bull Mater Sci 44, 154 (2021). https://doi.org/10.1007/s12034-021-02453-y
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DOI: https://doi.org/10.1007/s12034-021-02453-y