摘要
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注. 应用较广的模板合成法是一种较好的制备纳米结构的化学或电化学方法,尤其是利用它可以稳定地制备出复合材料的纳米线.
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.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
2002年第5期944-946,共3页
Chemical Journal of Chinese Universities
基金
国家自然科学基金(批准号:69890220)资助.
