Novel ZnIn2S4/FeUiO-66 (ZFeU) photocatalyst with different proportion of FeUiO-66 has been successfully prepared by a facile one-pot solvothermal reaction. The as-synthesized nanocomposites have been thoroughly characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier transform-infrared spectroscopy (FT-IR), UV-Vis diffuse reflectance spectroscopy (UV-Vis DRS), Brunauer–Emmett–Teller (BET) characterization, photoluminescence (PL) analysis and electrochemical impedance spectrum (EIS). The photocatalytic performance of ZFeU nanocomposites for the photodegradation of RhB under visible light irradiation was better than that of ZnIn2S4 and FeUiO-66 alone. The experiment results showed the 20% ZFeU nanocomposites had the best photocatalytic properties. At the same time, a probable mechanism was discussed and it was believed that introduction of FeUiO-66 on ZnIn2S4 would minimize the recombination of photogenerated electron-hole pairs, leading to the enhancement of the photocatalytic activity.
PDA/MIL-53(Fe) nanocomposites prepared via a nature-mimicking method were efficient catalysts towards the photocatalytic selective oxidation of alcohols to aldehydes or ketones by a direct holeoxidation process under visible-light illuminated conditions.
Carbon doped mesoporous TiO2 was prepared by an improved calcination route. X-Ray diffraction, UV-visible spectroscopy, TEM, X-ray photoelectron spectroscopy and nitrogen adsorption were used to characterize the prepared TiO2 samples. Citric acid was used as not only carbon source but also the pore-forming agent. The photocatalytic activities were tested in the degradation of an aqueous solution of a reactive dyestuff, methylene blue, under both UV and visible light. The carbon doped mesoporous TiO2 prepared by improved calcination route showed much higher photocatalytic activity than that of catalyst prepared by conventional calcination route and neat TiO2 under visible light. A possible mechanism for the photocatalysis was proposed.
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