【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%。更多还原

【Abstract】 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 Fe3O4 mixed in.The nanorods have a greater length-diameter ratio,good magnetic property,and the specific surface area is 32.89m2/g.The degradation experiments indicate that α-FeO(OH) nanorods have effective photocatalytic activity.The decolouring rates of methyl oran-ge solution are 29.8%,43.5% and 76.4% after more than 3 hours’ irradiation under 21W,50W xenon lamp,and natural lighting.更多还原