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采用阳极氧化法,在醇(丙三醇、乙二醇)-水-NH4F电解液体系中制备高度有序的TiO2纳米管阵列。采用场发射扫描电子显微镜(SEM)、X射线衍射仪(XRD)对TiO2纳米管阵列的形貌和晶型结构进行表征,讨论了阳极氧化法制备工艺(阳极氧化电压、氧化时间、电解液)对TiO2纳米管的形貌、结构及其甲基橙光催化降解性能的影响;分析了退火温度对TiO2阵列的物相及其光催化性能的影响。研究结果表明,采用高电压、增加氧化时间有利于TiO2纳米管阵列光催化的提高,在其它参数相同的情况下,采用丙三醇作为电解液制备获得的TiO2纳米管阵列较乙二醇体系具有更加优异的光催化性能。
Anodization was used to prepare highly ordered TiO2 nanotube arrays in alcohol (glycerol, ethylene glycol) -water-NH4F electrolyte system. The morphology and crystal structure of TiO2 nanotube arrays were characterized by field emission scanning electron microscopy (SEM) and X-ray diffraction (XRD). The preparation process of anodization (anodization voltage, oxidation time, electrolyte) On the morphology and structure of TiO2 nanotubes and its photocatalytic degradation of methyl orange; the effect of annealing temperature on the phase and the photocatalytic properties of TiO2 arrays were analyzed. The results show that the use of high voltage, increasing the oxidation time is conducive to TiO2 nanotube array photocatalytic increase in the other parameters of the same circumstances, the use of glycerol as the electrolyte prepared TiO2 nanotube array has a More excellent photocatalytic performance.