聚苯胺在氧化钛纳米管中的电化学合成研究

摘要聚苯胺（PANI）作为一种导电高分子材料，由于具有良好的导电性、化学稳定性、电化学可逆性、优良的电磁微波吸收性能和合成方法简便等特性，成为当今研究进展最快的导电高分子材料之一。而具有纳米结构的聚苯胺不仅在聚苯胺传统的应用领域中具有更好的性能，而且能够在更新的应用领域中发挥重要作用。化学方法合成聚苯胺一般需要在低温条件，且污染较大。电化学方法则可以在常温合成聚苯胺，且电解液可以重复利用，产生的污染较少。因此，电化学方法合成聚苯胺的实用性研究具有一定的现实意义。本课题采用二次阳极氧化法制备高度有序的二氧化钛纳米管阵列，分别在四个不同氧化时间下制备二氧化钛纳米管，根据氧化时间的不同，得到不同长度的钛纳米管。对带有钛基体的钛片进行退火处理。在电化学工作站合成聚苯胺，分别测试在不同钛纳米管长度电极上得到的聚苯胺的 CV 曲线，分别在酸性溶液和中性溶液中的恒流充放电和阻抗特性，在酸性溶液和中性溶液中各选取功率特性和电容特性优良的一组，测试在不同扫速下的CV曲线。59691
毕业论文关键词聚苯胺钛纳米管电化学聚合中性溶液 CV
Title Study on The Electropolymerization of Polyaniline on Titanium Oxide Nanotubes
Abstract As a conductive polymer material, Polyaniline (PANI) has a good electrical conductivity and chemical stability, electrochemical reversibility and excellent electromagnetic microwave absorbing properties. Due to the simple methods of synthesis, Polyaniline has become one of the fastest polymer materials in the research progress. However, Polyaniline with nanostructures has a more unique performance, not only in traditional applications, but also can play an important role in the more updated application fields. It is well-known that the chemical synthesis of polyaniline generally need to be at low temperatures with greater pollution, while electrochemical synthesis of polyaniline merely need to be at room temperature and the electrolyte can be used repeatedly with less pollution. Therefore, the electrochemical synthesis of polyaniline has a certain practical significance in the practical study. In this paper, firstly, we prepared four different highly ordered titania nanotube array in 15min, 30min, 60min, 120min oxidation time with using secondary oxidation method. Different titania nanotube lengths depend on the different oxidation time. Secondly, we annealed the sheet of titanium with a titanium substrate. Thirdly, we polymerized polyaniline in a three-electrode electrochemical system. Fourthly, we separately tested the performance of different lengths of the nanotube electrodes on charging and discharging in an acidic solution and a neutral solution, so as to the impedance characteristic. Then, we each selected the one which has excellent characteristics in power and capacitance in the acidic solution and the neutral solution. Finaly, we did a test and got the CV curves under different scan rates and the charge-discharge curves under the different current densities.
Keywords Polyaniline titania nanotube electrochemical synthesis neutral solution CV

1 绪论· · ·1

1.1 二氧化钛及氧化钛纳米管 · 1

1.2 导电高分子及聚苯胺· · · 2

1.3 聚苯胺的合成研究现状· · ·3

1.4 本文研究内容 · 4

2 实验部分· 6 聚苯胺在氧化钛纳米管中的电化学合成研究:http://www.751com.cn/huaxue/lunwen_64985.html