FeCoCa氧化物纳米晶的制备及芬顿降解亚甲基蓝的性能分析  

Preparation of Fe Co Ca Oxide Nano Particles and Performance Analysis of Fenton-Degraded Methylene Blue

作　　者：贾若琨[1] 徐凯[1] 林松竹[1] 李艺花 马宗伟[1] 

机构地区：[1]东北电力大学化学工程学院,吉林132012

出　　处：《硅酸盐通报》2015年第3期653-658,共6页Bulletin of the Chinese Ceramic Society

基　　金：国家自然科学基金(51003010);吉林省科技发展计划项目(SKLSSM201132;20140101090JC)

摘　　要：采用溶胶-凝胶法制备了Fe Co Ca三种元素的氧化物纳米晶。采用XRD,SEM对催化剂进行表征,同时研究了亚甲基蓝催化剂与H2O2的协同降解作用。结果表明:Fe Co Ca氧化物纳米晶和H2O2组成的Fenton反应可以有效地降解亚甲基蓝溶液;当铁钴钙三种元素的摩尔比例为1∶1.5∶3.5,催化剂投加量为1.2 g/L,过氧化氢投加量为0.7m L,初始p H值为6.80,亚甲基蓝的降解率达到93%;与传统Fenton反应体系相比,溶出铁的量降低到0.18 mg/L。FeCoCa oxide nanocrystals prepared by sol-gel method. XRD and SEM were used to characterize the catalysts. At the same times, we studied the synergistic degradation of Methylene blue catalyst and H2O2. Results showed that FeCoCa Fenton reaction system composed of oxide nanocrystals and H2O2 effectively degraded methylene blue. When the molar ratio of Fe, Co, Ca elements is 1： 1.5： 3.5, the dosage of catalysts is 1.2 g/L, the dosage of H2O2 is 0.7 mL, the initial pH is 6.80, the degradation rate of methylene blue was evaluated to be 93%. Compared with traditional Fenton reaction system, the amount of leaching of iron was decreased to 0. 18 mg/L as the catalyst under similar conditions.

关 键 词：混芬顿试剂 铁钴钙氧化物纳米晶 溶出铁 降解率 

分 类 号：O643[理学—物理化学]