Construction of TiO2@PT photocatalyst and its study on photocatalytic degradation of toluene
TiO2 composite condensation of p-phenylenediamine and p-phenylenedialdehyde(TiO2@PT)catalysts were prepared by in-situ condensation method,using p-phenylenediamine and p-phenylenedialdehyde as raw materials.The toluene photocatalytic degradation abilities of the catalysts were studied.The catalysts'morphologies and optical properties were characterized by scanning electron microscope(SEM),surface area analysis(BET),fourier transform infrared spectroscopy(FT-IR),photoluminescence spectroscopy(PL)and ultraviolet-visible spectroscopy(UV-Vis)and transient photocurrent(TPC).It was found that under 365nm ultraviolet irradiation,TiO2@PT catalyst had a good degradation ratio on toluene.In addition,the toluene degradation capacities of TiO2@PT with different polymer coating ratios were studied under various catalyst dosages,toluene concentrations,and reaction temperatures.The results showed that the highest degradation conversion was 26.41％,under 100W ultraviolet irradiation(365nm),0.1g TiO2@1％PT dosage,1000× 10-6toluene concentration,corresponding to a reaction rate of 1177.89μmol/(g·h).
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