孔间距和孔径连续可调的PAA模板的制备

发布时间：2018-06-14 23:49

本文选题：多孔阳极氧化铝 + 规整纳米材料　；参考：《化学工程》2017年02期

【摘要】：在磷酸溶液中以二次阳极氧化制备的多孔阳极氧化铝(PAA)模板存在孔的规整低的缺点,文中提出了在磷酸/草酸混合溶液中采用二次阳极氧化法制备高规整(PAA)模板,利用图像处理软件(Image-Pro plus)对PAA膜的扫描电镜图进行分析处理,定量研究了阳极氧化电压、草酸含量和扩孔时间对PAA模板的孔径和孔间距的影响。由实验结果可知,在质量分数1%磷酸溶液中加入0.03 mol/L草酸溶液作为阳极氧化电解液,阳极氧化电压可以达到200 V。通过调节草酸添加量和阳极氧化电压可以得到孔间距在345—498 nm范围内高规整PAA模板。通过改变扩孔时间可以获得孔径在140-400 nm范围内高规整PAA模板,并且孔径与扩孔时间呈正线性相关关系,相关系数为0.99。这种高规整孔径、孔间距连续可调的PAA模板能够被用于制备规整金属纳米线阵列、纳米管阵列和高分子纳米柱等材料。
[Abstract]:The porous anodic alumina (PAA) template prepared by secondary anodizing in phosphoric acid solution has the disadvantage of low pore regularity. In this paper, a new high order PAA template was prepared by secondary anodizing method in phosphoric acid / oxalic acid mixed solution. The scanning electron microscope (SEM) images of PAA films were analyzed by image processing software image-Pro plus.The effects of anodic oxidation voltage, oxalic acid content and pore reaming time on the pore size and pore spacing of PAA template were quantitatively studied. The experimental results show that the anodic oxidation voltage can reach 200 V when 0.03 mol / L oxalic acid solution is added into 1% phosphoric acid solution by mass fraction as anodizing electrolyte. By adjusting the amount of oxalic acid and anodizing voltage, a highly structured PAA template with pore spacing in the range of 345-498 nm can be obtained. A highly structured PAA template with pore diameter ranging from 140 nm to 400 nm can be obtained by changing the reaming time, and the correlation coefficient is 0.99 with a positive linear correlation between pore diameter and reaming time. The PAA template with highly structured pore size and continuously adjustable pore spacing can be used to fabricate structured metal nanowire arrays nanotube arrays and polymer nanocolumns.
【作者单位】：天津工业大学纺织学院;厦门理工学院材料工程学院;天津工业大学教育部先进复合材料重点实验室;
【基金】：国家自然科学基金面上项目(51473122)
【分类号】：TQ133.1

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