Nickel oxide-doped ACF and TiO 2 composites (NiO/ACF/TiO 2) were prepared by a sol-gel method. The composite obtained was characterized by BET surface area measurements, X-ray diffraction, transmission electron microscopy and energy dispersive X-ray analysis. A methylene blue (MB) solution under visible light irradiation was used to determine their photocatalytic activity. Excellent photocatalytic degradation of the MB solution was observed using the TiO 2 , Ti-ACF and NiO/ACF/TiO 2 composite under visible light.
Activity carbon (AC), Cu and Cu 2 O modified TiO 2 composites (Cu/Cu 2 O-AC/TiO 2) were prepared using a sol-gel method. The characteristics of the composites were evaluated using Brunauer-Emmett-Teller (BET) surface area measurements, X-ray diffraction (XRD), energy dispersive X-ray (EDX) analysis and scanning electron microscope (SEM) analysis. A methyl orange (MO) solution under visible light irradiation was used to determine the photocatalytic activity. The degradation of MO was determined using UV/Vis spectrophotometry. Cu 2 O, Cu and the cooperative effect of the AC increased the photo-absorption effect, thus increasing in photocatalytic activity.
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