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以钛酸丁酯为钛源,采用无模板溶剂热法合成了Ti O_2中空微球,并采用X射线衍射(XRD)、扫描电镜(SEM)、透射电镜(TEM)、N_2物理吸附-脱附(BET)对样品进行了表征和分析,以甲基橙为模拟污水考察了样品光催化降解甲基橙的能力。结果表明,Ti O_2中空微球为锐钛矿相,是由细小的纳米晶自组装形成的具有中空结构的Ti O_2微球,微球的直径为0.4~0.5μm,样品的比表面积为60 m~2/g。在8 W紫外灯照射下,将Ti O_2中空微球加到初始溶度为15 mg/L的甲基橙溶液中,在光照80 min后甲基橙降解率达到95%,表现出良好的光催化活性。
Ti 2 O 2 hollow microspheres were synthesized by a non-template solvothermal method using butyl titanate as a titanium source. X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), physical adsorption- (BET) were used to characterize and analyze the samples. Methyl orange as simulated wastewater was used to investigate the photocatalytic degradation of methyl orange. The results show that the Ti 2 O 2 hollow microspheres are anatase phase and are hollow Ti O 2 microspheres formed by self-assembly of small nanocrystals. The microspheres have a diameter of 0.4-0.5 μm and a specific surface area of 60 m ~ 2 / g. Ti O_2 hollow microspheres were added to methyl orange solution with an initial solubility of 15 mg / L under irradiation of 8 W UV lamp. The degradation rate of methyl orange reached 95% after 80 min illumination, showing good light Catalytic activity.