Preparation and Properties of Micro/Nanostructural Polyaniline Doped with α-SiW₁₁Co

Abstract:

Micro/nano-structural polyaniline were prepared by using thin glass tubes as template in the presence of α-SiW₁₁Co and ammonium persulfate, which were used as dopant and oxidant, respectively, in this study. The structure and morphology of Micro/nano-structural polyaniline were characterized by means of IR, UV-Vis spectrum, XRD pattern and SEM images. The conductivity and fluorescence property were determined, and thermal stability was studied. The experimental results showed that the conductivity of the materials was 0.86 S·cm^-1 at room temperature（20°C）. The images of scanning electron microscopy show that the materials have microspheres morphology. The spectra data indicate that polyaniline doped with α-SiW₁₁Co exhibits fluorescence property. The photocatalytic degradation of gentian violet on α-SiW₁₁Co/PANI in an aqueous solution was carried out to investigate the catalytic activity. The results indicated that the sensitizing effect of PANI can improve the light response of α-SiW₁₁Co and enhance the separation efficiency of electron and hole pairs which in turn promotes the photocatalytic ability of the composites materials. This novel photocatalyst exhibits very high photocatalytic activities to decompose gentian violet in aqueous system under 30W ultraviolet light irradiation. After extraction, the photocatalytic activity under UV irradiation and gentian violet degraded by 90.41% within 150 min.

• Periodical: Materials Science Forum (Volumes 743-744)
• Pages: 745-750
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.743-744.745
• Online since: January 2013
• Authors: Rong Hua Ma, Ying Wang, Xue Hua Ma, Cheng Xin Ma
• Keywords: Conductivity, Fluorescence Property, Polyaniline, Silicotungstat

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