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摘要：如今多孔阳极氧化铝薄膜由于是具有均匀而规则的纳米孔道阵列的材料而越来越多地被应用于研究开发，并应用于多种新型功能材料。多孔阳极氧化铝膜的制备是采用直流阳极氧化的方法，铝片通过预处理再在电解池中阳极氧化而制备的。阳极氧化铝薄膜其孔径小，孔密度高，能制备出高质量有序的一文纳米线阵列，而被人们用作合成纳米有序结构的模板。我们提出了一种氧化铝模板自还原制备金属镍粉的方法，我们将铝基氧化铝模板放入金属镍氯化物水溶液中，在氧化铝孔上部沉积了金属镍颗粒，超声后,粒径大小均匀的微米级金属颗粒从氧化铝模板上脱落，即可获得金属镍粉。在磁场作用下镍粉首尾相连，线状排列，表现了良好的组装性能。39454
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毕业论文关键词：氧化铝模板、还原反应、线状排列
Preparation of nickel powder and its assembling properties by alumina template
Abstract:Now the porous anodic alumina film has been more and more used in the research and development because it is the material having a uniform and regular nanohole array, and it applied to a variety of new functional materials. Porous anodic alumina membranes were prepared by DC anodic oxidation .The aluminum sheet has been preprocessed and then, it will been the and anodic aluminum oxide thin films in an electrolytic cell by anode oxidation with the small pore size, the high-density pore , which can prepare a high-quality and ordered nanowire array, that can be used for synthesis of ordered nano structure template. The method of anodic aluminum oxide template using electroless deposition can be deposited metal nickel . The experiment researched the process of the preparation of porous alumina film and using the porous alumina as a template to deposite the nickel on the nano hole .In this paper ,preparation of Janus metal particles on porous aluminum template via redox reaction , we report a basic and simple method for fabricating metal Ni particles by putting the AAO template with a backside aluminum sheet into aqueous solutions of metal chloride salts, based on redox reactions of two galvanic cells to form metal atoms and subsequent size uniformity metal particles growth on the pores of AAO template,and last Janus metals particles are collected by ultrasonic from the AAO template. SEM images of a single metal particle pattern, revealing that the metal particle one face is like hemisphere and the other face is like plane .moreover,Ni particles can be a linear structure in magnetic field.
Keywords:AAO, Redox reaction, Linear structure
第一章 绪论 1
1.1铝片 1
1.1.1铝片的物理性质 1
1.1.2 铝片的化学性质 1
1.1.3 铝片的特点及应用 1
1.2 氧化铝模板制备纳米材料 2
1.2.1 氧化铝模板的制备 2
1.2.2 多孔阳极氧化铝模板制备纳米材料 5
1.2.3 多孔阳极氧化铝模板的应用 7
1.3 本论文的选题背景与研究内容 9
第二章 氧化铝模板制备镍粉及其组装性质 10
2.1引言 10
2.2 氧化铝模板的制备 10
2.2.1 试剂及仪器 10
2.2.2 实验装置 10
2.2.3一步阳极氧化实验流程 11
2.2.4两步阳极氧化实验流程 12
2.2.5 实验结果 13
2.3氧化铝模板沉积镍实验部分 13
2.3.1实验材料 13
2.3.2 实验步骤 13
2.3.3 样品表征 14
2.3.4 结果讨论 15
2.3.5 反应原理 15
2.4镍粉的组装性质 16