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Mesoporous Octahedron-Shaped Tricobalt Tetroxide Nanoparticles for Photocatalytic Degradation of Toxic Dyes

[Image: see text] The present article reports a facile approach to fabrication of mesoporous octahedron-shaped tricobalt tetroxide nanoparticles (Co(3)O(4) NPs) with a very narrow size distribution for eco-friendly remediation of toxic dyes. Co(3)O(4) NPs were fabricated by a sol–gel process using c...

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Autores principales: Sonkusare, Vaishali N., Chaudhary, Ratiram Gomaji, Bhusari, Ganesh S., Mondal, Aniruddha, Potbhare, Ajay K., Mishra, Raghvendra Kumar, Juneja, Harjeet D., Abdala, Ahmed A.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2020
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7160848/
https://www.ncbi.nlm.nih.gov/pubmed/32309692
http://dx.doi.org/10.1021/acsomega.9b03998
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author Sonkusare, Vaishali N.
Chaudhary, Ratiram Gomaji
Bhusari, Ganesh S.
Mondal, Aniruddha
Potbhare, Ajay K.
Mishra, Raghvendra Kumar
Juneja, Harjeet D.
Abdala, Ahmed A.
author_facet Sonkusare, Vaishali N.
Chaudhary, Ratiram Gomaji
Bhusari, Ganesh S.
Mondal, Aniruddha
Potbhare, Ajay K.
Mishra, Raghvendra Kumar
Juneja, Harjeet D.
Abdala, Ahmed A.
author_sort Sonkusare, Vaishali N.
collection PubMed
description [Image: see text] The present article reports a facile approach to fabrication of mesoporous octahedron-shaped tricobalt tetroxide nanoparticles (Co(3)O(4) NPs) with a very narrow size distribution for eco-friendly remediation of toxic dyes. Co(3)O(4) NPs were fabricated by a sol–gel process using cobalt chloride hexahydrate (CoCl(2)·6H(2)O) and monosodium succinate (C(4)H(5)O(4)Na) as a chelating/structure-directing agent and sodium dodecyl sulfate as a surfactant. Moreover, the phase structure, elemental composition, and thermal and morphological facets of Co(3)O(4) NPs were investigated using XRD, FT-IR, EDS, Raman, XPS, TGA, SEM, and TEM techniques. The face-centered cubic spinel crystalline structure of the Co(3)O(4) NPs was confirmed by XRD and SEM, and TEM analysis revealed their octahedron morphology with a smooth surface. Moreover, the narrow pore size distribution and the mesoporous nature of the Co(3)O(4) NPs were confirmed by Brunauer–Emmett–Teller measurements. The photocatalytic activity of Co(3)O(4) NPs for degradation of methyl red (MR), Eriochrome Black-T (EBT), bromophenol blue (BPB), and malachite green (MG) was examined under visible light irradiation, and the kinetics of the dye degradation was pseudo-zero-order with the rate constant in the order of MR > EBT > MG > BPB. Furthermore, the mechanism of photo-disintegration mechanism of the dye was examined by a scavenging test using liquid chromatography–mass chromatography, and its excellent photodegradation activities were attributed to the photogenerated holes (h(+)), superoxide (O(2)(–)) anions, and hydroxyl ((·)OH) radicals. Finally, the synergistic effect of the nano-interconnected channels with octahedron geometry, mesoporous nature, and charge transfer properties along with photogenerated charge separations leads to an enhanced Co(3)O(4) photocatalytic activity.
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spelling pubmed-71608482020-04-17 Mesoporous Octahedron-Shaped Tricobalt Tetroxide Nanoparticles for Photocatalytic Degradation of Toxic Dyes Sonkusare, Vaishali N. Chaudhary, Ratiram Gomaji Bhusari, Ganesh S. Mondal, Aniruddha Potbhare, Ajay K. Mishra, Raghvendra Kumar Juneja, Harjeet D. Abdala, Ahmed A. ACS Omega [Image: see text] The present article reports a facile approach to fabrication of mesoporous octahedron-shaped tricobalt tetroxide nanoparticles (Co(3)O(4) NPs) with a very narrow size distribution for eco-friendly remediation of toxic dyes. Co(3)O(4) NPs were fabricated by a sol–gel process using cobalt chloride hexahydrate (CoCl(2)·6H(2)O) and monosodium succinate (C(4)H(5)O(4)Na) as a chelating/structure-directing agent and sodium dodecyl sulfate as a surfactant. Moreover, the phase structure, elemental composition, and thermal and morphological facets of Co(3)O(4) NPs were investigated using XRD, FT-IR, EDS, Raman, XPS, TGA, SEM, and TEM techniques. The face-centered cubic spinel crystalline structure of the Co(3)O(4) NPs was confirmed by XRD and SEM, and TEM analysis revealed their octahedron morphology with a smooth surface. Moreover, the narrow pore size distribution and the mesoporous nature of the Co(3)O(4) NPs were confirmed by Brunauer–Emmett–Teller measurements. The photocatalytic activity of Co(3)O(4) NPs for degradation of methyl red (MR), Eriochrome Black-T (EBT), bromophenol blue (BPB), and malachite green (MG) was examined under visible light irradiation, and the kinetics of the dye degradation was pseudo-zero-order with the rate constant in the order of MR > EBT > MG > BPB. Furthermore, the mechanism of photo-disintegration mechanism of the dye was examined by a scavenging test using liquid chromatography–mass chromatography, and its excellent photodegradation activities were attributed to the photogenerated holes (h(+)), superoxide (O(2)(–)) anions, and hydroxyl ((·)OH) radicals. Finally, the synergistic effect of the nano-interconnected channels with octahedron geometry, mesoporous nature, and charge transfer properties along with photogenerated charge separations leads to an enhanced Co(3)O(4) photocatalytic activity. American Chemical Society 2020-04-01 /pmc/articles/PMC7160848/ /pubmed/32309692 http://dx.doi.org/10.1021/acsomega.9b03998 Text en Copyright © 2020 American Chemical Society This is an open access article published under an ACS AuthorChoice License (http://pubs.acs.org/page/policy/authorchoice_termsofuse.html) , which permits copying and redistribution of the article or any adaptations for non-commercial purposes.
spellingShingle Sonkusare, Vaishali N.
Chaudhary, Ratiram Gomaji
Bhusari, Ganesh S.
Mondal, Aniruddha
Potbhare, Ajay K.
Mishra, Raghvendra Kumar
Juneja, Harjeet D.
Abdala, Ahmed A.
Mesoporous Octahedron-Shaped Tricobalt Tetroxide Nanoparticles for Photocatalytic Degradation of Toxic Dyes
title Mesoporous Octahedron-Shaped Tricobalt Tetroxide Nanoparticles for Photocatalytic Degradation of Toxic Dyes
title_full Mesoporous Octahedron-Shaped Tricobalt Tetroxide Nanoparticles for Photocatalytic Degradation of Toxic Dyes
title_fullStr Mesoporous Octahedron-Shaped Tricobalt Tetroxide Nanoparticles for Photocatalytic Degradation of Toxic Dyes
title_full_unstemmed Mesoporous Octahedron-Shaped Tricobalt Tetroxide Nanoparticles for Photocatalytic Degradation of Toxic Dyes
title_short Mesoporous Octahedron-Shaped Tricobalt Tetroxide Nanoparticles for Photocatalytic Degradation of Toxic Dyes
title_sort mesoporous octahedron-shaped tricobalt tetroxide nanoparticles for photocatalytic degradation of toxic dyes
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7160848/
https://www.ncbi.nlm.nih.gov/pubmed/32309692
http://dx.doi.org/10.1021/acsomega.9b03998
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