In this study, we report synthesis of highly ordered self-organized nanoporous alumina membranes (NAMs) with two distinct pore diameter ranges by two step anodization technique from two different electrolytes containing simple H₂SO₄ and mixed electrolyte consisting of H₂SO₄ and ethylene glycol. Three different complimentary techniques field emission scanning electron microscopy (FESEM), atomic force microscopy (AFM) and small X-ray scattering (SAXS) were used to characterize the synthesised membranes. An attempt was made to correlate the pore parameters obtained from low ensemble size two dimensional FESEM and AFM micrographs and from large area three dimensional scattering using SAXS. A special attention was given in estimating the porosity of these ordered membranes and compared the results. It was demonstrated that such controlled synthesis method can result in improved pore regularity in NAMs along with enhanced porosity, greater than 40%.

在这项研究中，我们报告了通过两步阳极氧化技术，从包含简单H ₂ SO _4的两种不同电解质和由H ₂ SO ₄组成的混合电解质中合成具有两个不同孔径范围的高度有序的自组织纳米多孔氧化铝膜（NAM）和乙二醇。三种不同的互补技术使用场发射扫描电子显微镜（FESEM），原子力显微镜（AFM）和小X射线散射（SAXS）表征合成膜。尝试关联从低整体尺寸二维FESEM和AFM显微照片以及使用SAXS从大面积三维散射获得的孔隙参数。在估计这些有序膜的孔隙率并比较结果时，要特别注意。结果表明，这种受控的合成方法可以改善NAM中的孔隙规则性，并提高孔隙率，大于40％。