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利用微波辅助水热法,以十八胺作为软模板合成了多孔TiO2;对多孔的TiO2进行XRD、N2吸附脱咐等温曲线、比表面积的表征。研究了超声波的能量、温度、硝酸的浓度对多孔结构形成的影响;并以甲苯为目标污染物,考察了合成的多孔TiO2在紫外光下的光催化活性。结果表明,多孔TiO2的光催化活性要比无孔道结构的TiO2的光催化活性高。
Porous TiO2 was synthesized by using octadecylamine as soft template by microwave-assisted hydrothermal method. The isothermal curves of XRD, N2 adsorption and desorption of porous TiO2 were characterized. The effects of ultrasonic energy, temperature and concentration of nitric acid on the formation of porous structure were studied. Toluene was chosen as the target pollutant, and the photocatalytic activity of the synthesized porous TiO2 under ultraviolet light was investigated. The results show that the photocatalytic activity of porous TiO2 is higher than that of TiO2 without porous structure.