α-FeO(OH)纳米棒的制备、表征及光催化性能  

Preparation,Characterization and Photocatalytic Properties of α-FeO(OH) Nanorod

作　　者：李潇[1,2] 张国欣[1] 周伟[1] 王妮[1] 沈华[1] 胡伟青[1] 张岚[1] 

机构地区：[1]中国科学院上海应用物理研究所,上海201800 [2]中国科学院研究生院,北京100049

出　　处：《材料导报》2011年第12期88-90,94,共4页Materials Reports

基　　金：国家自然科学基金(1080506910875163)

摘　　要：通过氧化-沉淀法合成了具有光催化活性的-αFeO(OH)纳米棒,用TGA、SEM、BET等分析方法进行结构表征和性能测试,并对其降解偶氮类染料的性能进行了研究。结果表明,产物主要成分为针铁矿-αFeO(OH),另含有少量Fe3O4;产物长径比较高,比表面积为32.89m2/g,并具有优良的磁性能。在作为光催化剂降解偶氮类染料甲基橙的实验中,-αFeO(OH)纳米棒表现出较好的催化效果。在21W、50W模拟光源和自然光照下降解3h以上,其脱色率分别为29.8%、43.5%和76.4%。α-FeO（OH） nanorods were prepared by oxidation-precipitation process, and characterized by TGA, SEM, BET, etc. The photocatalytic properties of α-FeO（OH） nanorod were also tested. The results show that the main composition of product is qoethite（α-FeO（OH））, with a little FeaO4 mixed in. The nanorods have a greater length-diameter ratio, good magnetic property, and the specific surface area is 32. 89m2/g. The degradation experi- ments indicate that α-FeO（OH） nanorods have effective photocatalytic activity. The decolouring rates of methyl orange solution are 29.8%, 43.5% and 76. 4% after more than 3 hours＇ irradiation under 21W, 50W xenon lamp, and natural lighting.

关 键 词：氧化-沉淀法 α—FeO(OH)纳米棒 光催化降解 甲基橙 

分 类 号：TQ138.1[化学工程—无机化工]