Preparation of Polyaniline-Modified TiO₂ Nanoparticles by In Situ Chemical Oxidative Polymerization and their Photocatalytic Activity for the Degradation of Methyl Orange under Natural Light

Abstract:

Polyaniline-modified nanocrystalline TiO₂ composites were successfully prepared by in situ chemical oxidative polymerization and used as an efficient photocatalyst for the degradation of methyl orange under natural light. The nanocomposites were characterized by Transmission electron microscope (TEM), Scanning electron microscope (SEM), Fourier transform infrared spectra (FT-IR), X-ray diffraction and UV-Vis spectra. Results show that polyaniline-modified nanocrystalline TiO₂ composites exhibit significantly higher photocatalytic activity than that of neat TiO₂ on degradation of methyl orange under natural light. In addition, the conductivity of polyaniline-modified TiO₂ nanoparticles was also investigated and has reached 2.65 × 10^-1 S cm^-1 at room temperature.

• Periodical: Advanced Materials Research (Volume 669)
• Pages: 24-29
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.669.24
• Online since: March 2013
• Authors: Zhao Pin He, Yuan Chang Shi, Li Bo Sun, Bo Li, Hong Jiao Nie
• Keywords: Chemical Oxidative Polymerization, Methyl Orange, Photocatalytic, Polyaniline-Modified, TiO₂

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