Synthesis of Cu/TiO2 nanocomposite by gamma irradiation for enhanced photocatalytic activity
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TiO2, copper, nanoparticles, photocatalytic, irradiation, rhodamine BTóm tắt
TiO2 doped with copper nanoparticles (Cu/TiO2) was prepared by g-irradiation method. The Cu/TiO2 nanoparticles were characterized using X-ray diffraction, transmission electron microscopy (TEM) and diffuse reflectance spectra (DRS). The photo-catalytic degradation of rhodamine B (RB) in the aqueous suspensions of TiO2 and Cu/TiO2 under visible light was carried out. Results showed that Cu/TiO2 catalysts was found to enhance photo-degradation efficiency of rhodamine B compared to pure TiO2.At 3.0% Cu content, the Cu/TiO2 photocatalyst exhibited the highest visible light photocatalytic activity. The higher activity of copper doped TiO2 is due to the enhancement of electron-hole separation by the electron trapping of copper particles.
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