Fast degradation of dyes in water using manganese-oxide-coated diatomite for environmental remediation

Dang, Trung-Dung and Banerjee, Arghya Narayan and Tran, Quang-Tung and Roy, Sudipta (2016) Fast degradation of dyes in water using manganese-oxide-coated diatomite for environmental remediation. Journal of Physics and Chemistry of Solids, 98. pp. 50-58. ISSN 0022-3697

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    Abstract

    By a simple wet-chemical procedure using a permanganate in the acidic medium, diatomite coated with amorphous manganese oxide nanoparticles was synthesized. The structural, microstructural and morphological characterizations of the as-synthesized catalysts confirmed the nanostructure of MnO2 and its stabilization on the support - diatomite. The highly efficient and rapid degradation of methylene blue and methyl orange over synthesized MnO2 coated Diatomite has been carried out. The results revealed considerably faster degradation of the dyes against the previously reported data. The proposed mechanism of the dye-degradation is considered to be a combinatorial effect of chemical, physicochemical and physical processes. Therefore, the fabricated catalysts have potential application in waste water treatment, and pollution degradation for environmental remediation.