基于环糊精多壁碳纳米管的多元复合电化学多巴胺传感材料的构建及性能

菜单

摘要碳纳米管早在1991年就被日本科学家Iijima发现，它是最富特征的一维纳米材料，而纳米管的表面积较大、物理性质较为独特、化学性质较为稳定，且导电性良好的特殊结构也让其具有良好的性能。碳纳米管具有超强的力学性能、极高的纵横比和独特的导电性。同时，为了提高碳纳米管的性能以及性质，延伸碳纳米管的用途，有许多的方法用于研究改性多壁碳纳米管的结构和性能，包括用物理方法和化学方法。这些碳纳米管复合材料已经应用于很多领域中，例如，催化剂、电子、光学和传感器等领域中。43200

本文分别用羟基化多壁碳纳米管(OH-MWCNTs)、氨基化多壁碳纳米管(NH2-MWCNTs)和羧基化多壁碳纳米管(COOH-MWCNTs)和未经改性的纯多壁碳纳米管(MWCNTs)原料在相同条件下与β-环糊精π-π自组装成超分子材料，通过比较对多巴胺(DA)电催化响应的不同来选择出最优功能化多壁碳纳米管f-MWCNT。然后研究不同还原剂(NaBH4/肼)作用下，石墨烯和最优f-MWCNT在不同配比下与β-环糊精超分子自组装，通过对获得的一系列碳基自组装体进行各种结构表征和电学性能测试，选择出最佳优化条件下的碳基复合纳米材料，用于修饰裸玻碳电极。将获得的新型传感器完成对DA的超灵敏检测，为临床医学检测做基础。然后研究了在四种不同温度下，一定质量配比的氧化石墨烯和氮化碳复合负载环糊精的合成反应，通过比较对多巴胺(DA)电催化响应的不同来选择出最优温度来合成制备一系列碳基复合纳米材料。最后研究了在最佳优化条件下合成一系列不同配比的氧化石墨烯和氮化碳的反应，并通过对获得的一系列碳基自组装体进行各种结构表征和电学性能测试:751!文~论`文/网www.751com.cn，选择出最佳优化条件下的碳基复合纳米材料，用于修饰裸玻碳电极。

关键词多壁碳纳米管改性环糊精氮化碳氧化石墨烯

毕业论文设计说明书外文摘要

Title The Construction and Performance of Multiple Composite Electrochemical Dopamine Sensing Materials based on Cyclodextrin /Multi-Walled Carbon Nanotubes.

Abstract

In 1991,the Japanese scientist Iijima discovered carbon nanotubes, which are the most special nanomaterials. And the surface area of carbon nanotubes is large, the physical property is unique, the chemical property is stable as well as the conductive structure is excellent, which could make carbon nanotubes excellent performance. Therefore, carbon nanotubes have superior mechanical properties, high aspect ratio and unique electrical conductivity. At the same time, in order to enhance the properties of carbon nanotubes and extend the application of carbon nanotubes, many methods including physical ways and chemical ways are used to study the structure and properties of multi-walled carbon nanotubes, all these carbon nanotubes are applied to many fields such as catalysts, electronics, optics and chemical sensors.

In this article, OH-MWCNTs, COOH-MWCNTs, NH2-MWCNTs and MWCNTs, with β-CDs and π-π self-assembling into supramolecular material, are used to prepare modified carbon nanotubes. And in this article we select optimal functionalized multi-walled carbon nanotubes by comparison with dopamine electrocatalytic response. Then we study the supromolecular self-assembled ofβ-CDs and the different proportion of graphene and f-MWCNTs under the different reducing agent, and a series of carbon matrix self-assembled material was subjected to test the structure and properties, and according the process, we select the carbon matrix composite material to modify bare glassy electrode under the optimal conditions. Also at four kinds of different temperature, a certain mass ratio of graphene oxide and carbon nitride compound supported by cyclodextrin synthesize a series of different carbon matrix composite material by comparing the electrocatalytic response to dopamine. Finally, we synthesized a series of different ratios of graphene oxide and carbon nitride under optimum conditions, and then in the research we select the optimum carbon nanotubes to modify bare glassy electrode by testing the structure and studying the properties of self-assembly of carbon matrix.