采用溶胶-凝胶法制备了5-(4-羧基亚甲氧基)苯基-10,15,20-三萘基卟啉合锌(Cmp TNPP(Zn))敏化Al2O3/TiO2得到了Cmp TNPP(Zn)/Al2O3/TiO2复合材料.实验中采用UV-Vis DRS、XRD、FT-IR、TG和SEM等手段对该复合材料进行表征.用亚甲基蓝(MB)溶液模拟废水,评价了该复合材料在可见光辐照下的光催化活性.结果表明,Cmp TNPP(Zn)和Al2O3的加入并未对TiO2的晶体结构产生影响.Cmp TNPP(Zn)的加入能有效地提高Al2O3/TiO2粉体对可见光的吸收,明显提高了该复合材料的光催化活性,亚甲基蓝的降解率在80 min内达到95.5%.并且发现Cmp TNPP(Zn)/Al2O3/TiO2催化材料重复使用5次后,仍然保持一定的降解效果.
Zn (II) -5- (4-carboxylmildmethoxy) phenyl-10, 15, 20-trinaphthylporphyrin sensitized A12OJTiO2 composite materials were synthesized by the sol-gel method. The TiO2 composite materials were characterized by scanning electron microscope (SEM), X-ray diffraction (XRD), fourier transform infrared spectrophotometer ( FT-IR), thermalgravimetry ( TG), and UV-Vis diffuse reflectance spectrum (DRS). As the result, the TiO2 composite materials all existed in the form of anatase crystal phase, and the add of Znic porphyrin and inorganic substances had no impact on the TiO2 crystal. Using methylene blue solution as the simulated wastewater, and evaluated the catalytic activity of the catalysts under visible light, it was found that the addition of CmpTNPP (Zn) effectively increased the absorption of visible light for the pure composite materials Al2O3/TiO2, it obviously improved the composite activity of the catalyst, making rate of methylene blue (MB) of 95.5% within 80 min. Moreover, the CmpTNPP the degradation (Zn) TiO2 was particularly stable under the visible light with photocatalytic degradation of MB cycles. /Al2O3/ after five