摘要
采用纳米TiO2-K2Cr2O7协同体系光催化氧化,分光光度法测定染料浓度.通过正交实验设计,研究pH值、TiO2用量、K2Cr2O7初始浓度、反应温度、紫外光照时间等因素对染料消解的影响.实验结果表明,各因素的影响程度从大到小依次为pH值>K2Cr2O7浓度>TiO2用量>反应温度>紫外光照时间;最佳消解条件为pH=1.0,TiO2用量为1.0g·L-1,K2Cr2O7初始浓度为10mmol·L-1,反应温度为90℃,紫外光照时间为12min.
A nano TiO2-K2Cr207 synergistic photocatalytic oxidation system was used to determine dye concentration.Through orthogonal experimental design, we studied the influencing factors on dye digestion such as pH,TiO2 dosage,the initial concentration of K2Cr207,reaction temperature and UV irradiation time. The results showed that the influence degree of each factor was ：pH〉K2Cr207 initial concentration〉TiO2 dos- age ,reaction temperature and irradiation time had the minor effects.According to the results,the optimal di- gestion conditions were as follows： pH = 1. O, TiO2 dosage = 1.0g · L-1 , K2 Cr2 07 initial concentration = 10mmol · L-1 ,reaction temperature= 90℃ ,and irradiation time= 12min.
出处
《浙江外国语学院学报》
2013年第4期12-15,共4页
Journal of Zhejiang International Studies University
