镍铝混合氧化物薄膜的制备及其对水中S_2O_3^(2-)的电吸附脱除性能

由基体提供镍源,采用原位生长法在泡沫镍表面获得镍铝水滑石薄膜后,经400℃焙烧得到了镍铝混合氧化物薄膜。X射线衍射(XRD)、元素分析、傅里叶变换红外光谱(FT-IR)和扫描电子显微(SEM)表征表明在泡沫镍表面获得了致密的镍铝镍铝水滑石薄膜。将进一步热处理得到的镍铝复合氧化物薄膜用作电极电吸附水溶液中的S_2O_3^(2-),在静态电吸附条件下,S_2O_3^(2-)的吸附率可达10%以上,吸附容量约为0.056 mg/cm^2;经5个电吸附及脱附循环,电吸附率下降不明显,单次脱附率可达89%以上。研究表明,该电极可应用于工业废水中S_2O_3^(2-)的脱除和回收。

铝基材组织结构对氧化铝薄膜纳米孔阵列结构的影响

Alumina film with nano-pore array structure was prepared by anodic oxidation of aluminum matrix with different techniques treated in phosphoric acid solution.It was indicated that aluminum matrix with different composition had a great effect on the formation process and nano-pore array structure of alummina film.It was found out that the basic cause of such effect was the difference of the crystal defect density of aluminum matrix.