凹凸棒土负载CeO_2催化氧化处理亚甲基蓝染料废水  

Catalytic oxidation process of methylene blue dyestuff by cerium coated attapulgite

作　　者：陈志刚[1] 郭亭亭[1] 李霞章[1] 陈丰[1] 陆晓旺[1] 张跃[2] 

机构地区：[1]江苏工业学院材料科学与工程学院,江苏常州213164 [2]江苏工业学院精细化工研究所,江苏常州213164

出　　处：《功能材料》2009年第10期1709-1712,共4页Journal of Functional Materials

基　　金：国家自然科学基金资助项目(20771047);江苏省自然科学基金资助项目(BK2008541);江苏省工业支撑资助项目(BE2008033)

摘　　要：采用均相沉淀法,以Ce(NO3)3.6H2O为原料,HMT为沉淀剂,制备了ATP/CeO2纳米复合材料。并以H2O2为氧化剂,利用该复合材料对亚甲基蓝(MB)染料模拟废水进行了催化氧化处理,分别考察了催化剂的投加量及CeO2的负载量对MB降解的影响规律。研究结果表明,负载CeO2凹凸棒土纳米复合催化剂的催化活性明显高于相同条件下制备的纯的CeO2,CeO2负载量及ATP/CeO2的投加量分别为40%和0.2g时,最大降解率可达96%,对亚甲基蓝表现出较强的催化活性。Attapulgite/CeO2 nanocomposite was prepared by homogeneous deposition method using Ce（NO3）3·6H2O as raw material,and HMT as precipitator. The catalytic activity of ATP/CeO1 was investigated by oxygenating methylene blue dye wastewater with taking H2 O2 as oxidant. The effects of ATP/CeO2 amount and the loading amount of CeO2 upon attapulgite on the degradation rate of the methylene blue are respectively investigated in detail. The results show that CeO2-coated attapulgite powder has remarkably enhanced catalytic activity compared with pure CeOz powder, and when the loading amount was 40% and the dosage of ATP/CeO2 was 0.2 g, the maximum degradation rate of MB reached 96%, which showed excellent catalytic activity.

关 键 词：凹凸棒土 二氧化铈 亚甲基蓝 催化氧化 

分 类 号：TB383[一般工业技术—材料科学与工程]