采用溶胶-凝胶法制备了FeCoCa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:FeCoCa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∶i.5∶3.5,催化剂投加量为1.2 g/L,过氧化氢投加量为0.7mL,初始pH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.
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