碳纳米管/石墨烯用于修饰电极作为伏安传感器在电分析中已广泛应用，在现行修饰方法中，碳纳米管/石墨烯在电极表面排列无序或修饰量较少，未能充分发挥碳纳米管/石墨烯高的电化学活性和电催化性能。项目提出将碳纳米管/石墨烯垂直紧密排列修饰在电极表面，制作成碳纳米管/石墨烯阵列的伏安传感器。首先在碳纳米管的一端和石墨烯的一边嫁接上适合制作LB膜的功能基团，然后借助LB膜技术将其修饰在电极上，这样制作的修饰电极，碳纳米管/石墨烯将整齐地单层排列，碳纳米管管体和石墨烯片体将垂直于电极表面，即碳纳米管/石墨烯阵列伏安传感器，充分发挥碳纳米管/石墨烯的高电化学活性和电催化性能，提高研究底物的电子传递速率和检测灵敏度。利用碳纳米管/石墨烯大比表面积和生物相容性，将酶、蛋白质等生物大分子固定于功能化的碳纳米管/石墨烯LB膜中，构建第三代生物电化学传感器，研究在LB膜微环境下，生物大分子的电化学行为及活性变化规律。

Carbon nanotubes/graphene modified electrodes as voltammetric sensors are widely used in electroanalytical chemistry. In current modifying methods, carbon nanotubes/graphene were disordered or modified less at the electrode surface, on which the high electrochemical activity and catalytic properties of carbon nanotubes and graphene will be diaplayed full. This project proposes that the carbon nanotubes/graphene will be vertically and tightly modified on the electrode surface, which is fabricated as carbon nanotubes/graphene array voltammetric sensor. Firstly, some functional groups are grafted on one end of carbon nanotubes and one side of graphene, which make them suitable for fabricating LB film. Then, the functional carbon nanotubes and graphene will be modified on electrode using LB membrane technology. For this fabrication, the carbon nanotubes and graphene will be ordered monolayer and the tube bodies and graphene sheets will be perpendicular to the electrode surface, i.e. carbon nanotubes/graphene array voltammetric sensor. These array sensors will display full the electrochemical activity and electrocatalytic properties of carbon nanotubes and graphene, achieving the goal of improving the electron transport rate and detection sensitivity for the studied substances. By using the big specific surface area and biocompatibility of carbon nanotubes and graphene, enzyme and protein biomacromolecules will be immobilized into the functionalized carbon nanotubes/graphene LB film, constructing the third generation electrochemical biosensors. Under the LB film micro-environment, the electrochemical behavior and activity change rule of biomacromolecules will be studied.