利用电化学方法在丙二酸的乙二醇溶液中制备多孔阳极氧化铝,并通过控制溶液浓度对氧化铝的厚度、孔径、孔间距进行了调控.实验发现,在氧化电压为500 V时制备出的氧化铝模板孔间距大,且色彩饱和度高,其UV-Vis反射波峰随着溶液浓度的增大产生红移.在浓度为1.5 mol/L丙二酸的乙二醇溶液中,制备出的阳极氧化铝薄膜孔间距能够达到400 nm,并且在红光区(约622 nm处)其UV-Vis反射光谱存在一个极大峰值.
Porous anodic alumina film can be formed on aluminum substrate in malonic acid and ethylene glycol electrolyte solution by electrochemical method.Effects of concentration of electrolyte on thickness and interpore distances of porous anodic alumina film were discussed.The test results ofthe porous anodic alumina show highly ordered dimple arrays measuring 200-400 nm in interpore distances at the ultra-high voltage of 500 V.Such film shows bright color successfully.The reflection peak shifts gradually with the alumina interpore distances toward longer wavelength.The aluminum specimens were anodized in 1.5 mol/L malonic acid and ethylene glycol electrolytes, and its maximum peak reaches 622 nm at 400 nm in interpore distances.
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