中文摘要：

在氟化铵-乙二醇体系中,采用阳极氧化法在铁基体上制备Fe2O3纳米管阵列,然后以氟钛酸铵为钛源,利用水热法在Fe2O3纳米管阵列上负载TiO2纳米片,制得Fe2O3/TiO2复合纳米管阵列,利用SEM、EDS、XRD、TEM、UV-Vis等手段,对所制Fe2O3/TiO2纳米管阵列的表面形貌、物相结构及光催化性能进行表征,并分析Fe2O3/TiO2纳米结构对亚甲基蓝的可见光降解能力。结果表明,Fe2O3/TiO2复合纳米管阵列具有良好的可见光响应;NH4F浓度为0.4%、水热反应3h制备的Fe2O3/TiO2复合结构具有最佳的光催化性能,对亚甲基蓝的降解率可达90%。

英文摘要：

Fe2O3nanotube arrays（NTAs）were prepared on pure iron substrate via anodic oxidation method in NH4F-ethylene glycol electrolytes,and then hydrothermal method was adopted to carry TiO2 nanosheets with（NH4）2TiF6 as titanium source,the Fe2O3/TiO2 nanocomposites were therefore synthesized.The morphology,microstructure,phase composition,photocatalytic properties,especially the photocatalytic degradation performance for methylene blue solution of prepared Fe2O3/TiO2 nanocomposites were characterized by SEM,EDS,TEM,XRD and UV-Vis.The results show that the obtained Fe2O3/TiO2 nanocomposites exhibit good visible-light response.Moreover,the Fe2O3/TiO2 NTAs prepared under the condition that NH4F concentration is 0.4% and hydrothermal reaction time is 3hhas the best photocatalytic activity,and the degradation rate of methylene blue solution can reach 90%.