论文部分内容阅读
以钛酸四丁酯为钛源,采用溶胶-凝胶法制备二氧化钛粉末,并将其用于紫外光下降解水体中的亚甲基蓝。探讨了二氧化钛的用量,亚甲基蓝溶液的初始浓度,有无紫外光照以及光照时间对亚甲基蓝降解率的影响。结果表明:所制备的二氧化钛对亚甲基蓝具有很好的光催化效果;当二氧化钛用量为0.05 g,亚甲基蓝的浓度为10 mg/L,体积为50 m L,光照时间为90 min时,亚甲基蓝的降解率可高达95.92%。
Titanium tetrabutoxide was used as titanium source to prepare titanium dioxide powder by sol-gel method, which was used to degrade methylene blue in water by UV light. The effects of the amount of titanium dioxide, the initial concentration of methylene blue solution, the presence or absence of ultraviolet light and the irradiation time on the degradation rate of methylene blue were discussed. The results showed that the prepared titanium dioxide had good photocatalytic activity for methylene blue. When the dosage of titanium dioxide was 0.05 g, the concentration of methylene blue was 10 mg / L, the volume was 50 m L, the irradiation time was 90 min, the degradation rate of methylene blue Up to 95.92%.