Fe_2O_3/TiO_2纳米管阵列的制备及其光催化性能  

Preparation and Photocatalytic Properties of Fe_2O_3/TiO_2 Nanotube Arrays

作　　者：黄益操 赵浙菲 李世雄[1] 邸婧[1] 郑华均[1] 

机构地区：[1]浙江工业大学化学工程学院,杭州310032

出　　处：《无机化学学报》2015年第1期133-139,共7页Chinese Journal of Inorganic Chemistry

基　　金：浙江省科技计划(No.2009R50002-20)资助项目

摘　　要：在钛基体上采用阳极氧化法制备了TiO2纳米管阵列,采用化学浴方法在TiO2纳米管阵列上修饰了Fe2O3纳米颗粒。利用扫描电镜、X射线衍射和紫外可见漫反射光谱等手段对材料进行了表征,同时测试了材料的光电化学性能及其光催化降解亚甲基蓝染料废水的性能。结果表明,Fe2O3纳米颗粒的修饰将TiO2纳米管阵列的光响应拓宽至可见光区域,提高了光电流,Fe2O3/TiO2纳米管阵列的光电流是未修饰的TiO2纳米管阵列的9倍。而在光催化反应中,亚甲基蓝最高降解率可达80%,比未修饰的TiO2纳米管阵列高出30%。TiO2 nanotube array was prepared by anodic oxidation method on the titanium substrate,and Fe2O3 nanoparticles was successfully deposited on TiO2 nanotube array by a chemical bath method.Scanning electron microscopy（SEM）,X-ray diffraction（XRD） and UV-Vis diffuse reflectance spectroscopy was applied to characterize their properties and the photoelectrochemical properties and the performance of photocatalytic degradation of methylene blue was investigated.The results indicated that the Fe2O3 modification not only broadened the absorption spectrum of TiO2 nanotube arrays to the visible light region,but also increased the photocurrent.The photocurrent response of Fe2O3 modified TiO2 nanotube arrays was 9 times higher than undecorated TiO2 nanotube arrays.In the photocatalytic reaction,the highest methylene blue degradation rate can reach 80%,which was30% higher than the bare TiO2 nanotube arrays.

关 键 词：三氧化铁 二氧化钛纳米管阵列 光催化降解 亚甲基蓝 

分 类 号：O614.411[理学—无机化学] O614.811[理学—化学]