低频交流电沉积金纳米线阵列的AFM研究

迄今，人们已采用许多方法制备纳米材料，如刻蚀技术、化学法和模板法等［1]．其中，引起科学界广泛兴趣的模板法，在合成有序纳米材料上占有极其重要的地位．常用的模板有两种，一种是有序孔洞阳极氧化铝（Anodic Aluminum Oxide，AAO）模板2]，另一种是含有孔洞无序分布的高分子模板．AAO模板具有耐高温，绝缘性好，孔洞分布均匀有序，而且大小可控等特点［3]．可以利用 AAO模板来制备各种纳米纤维和纳米管，如导电聚合物［4]、金属［5]、半导体［6]、碳［7]和其它一些材料．由于纳米材料的应用具有广阔的前景，如光催化、电化学、酶固定等方面，因而不同材料纳米线的制备备受关

AFM Study of Gold Nanowires Array Electrodeposited Under AC Lower Frequency

Abstract Hexagonally ordered microporous aluminum anoxic oxide(AAO) template was prepared by two-step anodization process. The thickness and diameter of the anodic alumina pore is proportional to the an-odization voltage and the second time anodization. Au/AAO membrane was also characterized by X-ray diffraction (XRD). Gold nanowires array was prepared in AAO by a lower frequency AC electrodeposition. The deposition rate of gold nanoparticles under the lower frequency is slower than under the higher frequency , so the membrane surface of Gold/AAO is uniform. The morphology of the nanowires array uniformly filled in hexagonally ordered pore was also monitored by atomic force microscope (AFM) after dissolution parts of alumina film.