Oxidative and antibacterial activity of Mn sub(3)O sub(4)

Mn sub(3)O sub(4) nanoparticles with diameter ca. 10nm were synthesized by the forced hydrolysis of Mn(II) acetate at 80 super(o)C. The X-ray diffraction (XRD), Fourier transform infra red (FT-IR) spectroscopy, scanning electron microscopy (SEM) and energy dispersive X-ray (EDX) techniques were empl...

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Bibliographic Details
Published in:Journal of hazardous materials 2009-12, Vol.172 (2-3), p.1229-1235
Main Authors: Chowdhury, AN, Azam, MdS, Aktaruzzaman, Md, Rahim, A
Format: Article
Language:English
Subjects:
Acetates
Aniline
Bacteria
Dyes
Nanoparticles
Polymerization
Salmonella
Scanning electron microscopy
Shigella
Vibrio cholerae
X-rays
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Summary:Mn sub(3)O sub(4) nanoparticles with diameter ca. 10nm were synthesized by the forced hydrolysis of Mn(II) acetate at 80 super(o)C. The X-ray diffraction (XRD), Fourier transform infra red (FT-IR) spectroscopy, scanning electron microscopy (SEM) and energy dispersive X-ray (EDX) techniques were employed to study structural features and chemical composition of the nanoparticles. The unique oxidative activity of the Mn sub(3)O sub(4) nanoparticles was demonstrated in the polymerization and dye degradation reactions. On adding Mn sub(3)O sub(4) suspension to an acidic solution of aniline, yielded immediately green sediment of polyaniline (PANI). The organic dyes, viz., methylene blue (MB) and procion red (PR) were found to be completely decolorized from their aqueous solution on treating the dyes with Mn sub(3)O sub(4) suspension in acidic media. The Mn sub(3)O sub(4) nanoparticles also showed a clear antibacterial activity against the Vibrio cholerae, Shigella sp., Salmonella sp., and Escherichi coli bacteria that cause cholera, dysentery, typhoid, and diarrhea diseases, respectively.
ISSN:0304-3894
1873-3336
DOI:10.1016/j.jhazmat.2009.07.129