摘要
制备了Ce掺杂的TiO2复合SiO2光催化剂(Ce-TiO2/SiO2),使用该光催化剂在模拟太阳光下催化降解亚甲基蓝水溶液,研究了催化剂用量、亚甲基蓝初始质量浓度、溶液pH、无机阴离子对光催化降解效果的影响。结果表明:n(Ce)∶n(Ti)∶n(Si)=0.002∶1∶1时所制催化剂的光催化活性最好;对于2.5 mg/L、pH为11的亚甲基蓝溶液,投加100 mg/L的光催化剂反应2 h可达到最高降解率(92.6%);NO3-、SO42-、Cl-的存在对光催化降解具有抑制作用。
The Ce-TiO2/SiO2 composite has been prepared. （MB） solution under simulated sunlight. The effects of the It is used as photocatalyst for degrading methylene blue dosage of catalyst, initial mass concentration of methylene blue, pH of the solution, and inorganic anions on the photocatalytic efficiency are studied. The results indicate that the photocatalytic activity of the catalyst is the best, when it is prepared as n （Ce）：n （Ti）：n （Si）=0.002：1：1. Adding 100 mg/L of photocatalyst to methylene blue whose initial mass concentration is 2.5 mg/L,pH=l 1 and reaction time is 2 h, the highest degradation rate 92.6% can be obtained. The presence of NO3-, SO2- and Cl- has an inhibitory effect on the photocatalytic degradation of MB.
出处
《工业水处理》
CAS
CSCD
北大核心
2012年第9期16-20,共5页
Industrial Water Treatment
基金
国家水体污染控制与治理科技重大专项(2009ZX07208-002-006-01)
