Abstract: Silver nanoparticles decorated polyaniline (PANI-AgNPs) nanocomposite material were prepared through the chemical polymerization followed by the liquid impregnation method with additional reduction process to achieve an effective catalyst working in the visible region. The resulting particles are characterized by using Transmission Electron Microscopy (TEM), Scanning Electron Microscopy (SEM), Energy Dispersive X-ray Spectroscopy (EDX) and Inductively Coupled Plasma Optical Emission Spectroscopy (ICP-OES). The photocatalytic activities of the PANI-AgNPs, TiO2 nanoparticles (P25) and bare PANI were revealed in degradation of methylene blue (MB) under solar light exposure, respectively. Compared to bare PANI and TiO2 nanoparticles, PANI-AgNPs showed enhanced catalytic activity which provided 99% degradation of dye in 120 min. So, highly efficient and stable photocatalyst which can be active in visible light was produced by simply adding AgNPs onto conducting polymer PANI by using green and fast methods.
Keywords: Semiconductor photocatalysts, environmental remediation, polyaniline, dye removal.
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