模板法制备CuO分叉纳米线

Templating preparation of branched CuO nanowires

通过3次阳极氧化制备具有分叉结构的氧化铝模板,在氧化铝模板的纳米孔洞中,用电化学方法沉积铜纳米线,经过500℃、30h氧化处理,成功制备出具有分叉结构的CuO纳米线。分别用扫描电子显微镜(SEM)、透射电子显微镜(TEM)和X射线衍射仪(XRD)对样品的形貌和晶体结构进行了表征测试。SEM观察结果氧化铝模板的纳米孔洞相互平行、分布均匀,枝干的孔心距约为120nm,枝叉的孔心距约为70nm。TEM观察显示纳米线各部分粗细均匀。样品的XRD分析表明分叉纳米线阵列的晶体结构为CuO。

Using electrochemistry method, we embeded copper nanowires in branched anodic aluminum oxide （AAO） membranes with nanoholes,which were fabricated in oxalic acid and sulfuric acid at a constant voltage. Then branched CuO nanowire arrays had been prepared successfully after being oxided thirty hours in 500℃. Scanning electron microscopy（SEM） studies showed that the nanohole in AAO membranes were parallel in symmetrical distribution. There are 120nm between the trunks and 70nm between the branches. Transmission electron microscopy （TEM） showed the nanowires have approximate diameter in the same part. X-ray diffraction （XRD） patterns confirmed the branched nanowire arrays had CuO phase.