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

Trung-Dung Dang, Arghya Narayan Banerjee, Quang-Tung Tran, Sudipta Roy

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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.
Original languageEnglish
Pages (from-to)50-58
Number of pages9
JournalJournal of Physics and Chemistry of Solids
Early online date6 Jun 2016
Publication statusPublished - 30 Nov 2016


  • diatomite
  • permanganate
  • manganese oxide
  • methylene blue
  • methyl orange
  • rapid degradation

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