采用二次铝阳极氧化法在草酸体系中制备多孔铝阳极氧化膜,用逆电剥离技术将氧化膜从铝基体上剥离.经超声清洗后,放入磷酸溶液中去除阻挡层,使纳米孔贯通.再将膜放入c=1 mol/L的NaOH溶液和w=6%的铬酸、w=1.8%的磷酸混合溶液中进行溶解,可获得Al2O3纳米线.纳米线长度为40μm,与模板厚度一致,直径为10～20 nm.通孔前后铝阳极氧化膜的形貌由SEM进行表征,纳米线的形貌由SEM和TEM表征.此外,本文还结合模板在溶解过程中的实验现象,对Al2O3纳米线的形成机理进行了初步分析.
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