| Abstrakt: |
The octahedron-shaped spinel cobalt oxide micro-particles (Co3O4 MPs) are fabricated via the thermal decomposition of a new cobalt(III) complex precursor without employing toxic solvents, surfactants, and complicated equipment. The X-ray structure of the precursor consists of one non-coordinating chloride anion and one mononuclear cation [Co(L)2]+ of the CoN4O2 structure with Co(III) center adopting a distorted octahedral geometry. The octahedral Co3O4 MPs are decorated on the chitosan (CS) polymer to form a Co3O4@CS composite. The chemical composition, phase structure, morphology, band gap energy, and magnetic properties of the samples are studied using the FT-IR, EDX, XRD, FE-SEM, AFM, UV–visible DRS, and VSM techniques. The Co3O4-catalyzed methylene blue (MB) degradation under LED light is investigated, and the operating conditions are optimized. Then the performance of the chitosan-decorated Co3O4 MPs is evaluated in the photo-degradation of MB at the optimum conditions. The kinetics mechanism and reusability of the catalysts are studied. Moreover, the anti-bacterial activity of the prepared samples is tested against the Gram + ve and Gram −ve bacterial strains. [ABSTRACT FROM AUTHOR] |
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