The homogeneity and stability of the structure of anodic TiO₂ nanotube (ATNT) arrays have been a hot topic in materials synthesis research. In this work, the current density distribution during the anodization of ATNT arrays was optimized by adding polyethylene glycol-600 (PEG-600) to the conventional ethylene glycol-based electrolyte, which enhanced the dependence of the electronic current on the applied voltage, thus providing a stabilizing effect on anodization and improving the homogeneity of the pores on the surface of ATNT arrays. A new image processing approach, called the region-growing method, is reported in this work, which can quantitatively analyze the pore size of ATNT arrays through SEM images, and the surface morphology of ATNT arrays was evaluated based on this. The most stable anodization was obtained with a 50 wt % PEG-600 addition, and the equivalent diameters of the pores prepared at applied voltages of 40, 50, and 60 V were 34.5340, 42.4010, and 50.4791 nm, respectively, with a linear correlation of 0.9999.

中文翻译：

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纳米结构优化和表征：聚乙二醇基电解质中 TiO2 的阳极氧化


阳极 TiO₂ 纳米管 （ATNT） 阵列结构的均匀性和稳定性一直是材料合成研究的热点。在这项工作中，通过在常规乙二醇基电解质中加入聚乙二醇-600 （PEG-600） 来优化 ATNT 阵列阳极氧化过程中的电流密度分布，增强了电子电流对外加电压的依赖性，从而对阳极氧化起到了稳定作用，提高了 ATNT 阵列表面孔隙的均匀性。本工作报道了一种新的图像处理方法，称为区域生长法，该方法可以通过 SEM 图像定量分析 ATNT 阵列的孔径，并在此基础上评价 ATNT 阵列的表面形貌。添加 50 wt % PEG-600 获得最稳定的阳极氧化，在 40、50 和 60 V 的外加电压下制备的孔的等效直径分别为 34.5340、42.4010 和 50.4791 nm，线性相关为 0.9999。