【摘要】 在0.3mol/dm3的草酸溶液中,采用二次阳极氧化法制备多孔氧化铝模板,研究了阳极氧化后的扩孔处理对多孔膜形貌和结构的影响。SEM和FE-SEM结果表明,经20min超声波扩孔处理后,多孔氧化铝模板纳米孔的结构更加趋于规则,表观孔径从30nm增大到70nm,其扩孔效果较常规扩孔方法更为明显。超声波扩孔时间增加到40min后,多孔膜孔径扩大至100nm,但某些区域的纳米孔壁已被部分溶解。在一定的电压范围内,随着电压增加,经超声波扩孔后的多孔氧化铝膜孔径增大,有序度有较大提高。更多还原

【Abstract】 Anodic aluminum oxide films can be prepared by anodizing highly pure aluminum foils in 0.3mol/dm³ H₂C₂O₄ solution by a two-step preparation technology.The microstructures of Al₂O₃ can be controlled by different pore-enlarging methods.Images of SEM and FE-SEM indicate that anodic alumina oxide template enlarged with ultrasonic wave for 20min has nearly ideal nanopore arrays,the diameter of pore is enlarged from 30nm to 70nm.Distinctly the effect with ultrasonic wave is better than ordinary method.When Al₂O₃ films were kept vibrating for 40min,the diameter of pore was enlarged to 100nm,but some regions of the films were destroyed.When anodic voltages arised,the pore diameter was enlarged and the template showed better nanopore arrays.更多还原