自支撑柔性(Ni/Co)硒化物/NSG-PEDOT电极材料的构筑及其过氧化氢检测性能与机理研究

过渡金属化合物纳米材料是一类极具应用潜力的无酶过氧化氢检测候选材料。然而，要使该类材料具有更优的无酶过氧化氢检测性能，就需要解决三大难题：优选具有良好电催化活性的活性材料，提高活性材料的利用率及电极材料的电子传输速率。本项目针对这三个难题，分别将过渡金属（Ni/Co）硒化物与自支撑柔性基底材料（NSG-PEDOT）相复合，构建出具有优异无酶过氧化氢检测性能的系列新型电极材料，并深入研究其相关科学问题。主要研究内容：1）系统研究各工艺参数对NSG-PEDOT及系列过渡金属（Ni/Co）硒化物活性材料的物相结构、组成、微观形貌及性能等的影响规律，获得系列具有优异电化学催化性能的无酶过氧化氢检测电极材料，掌握其可控制备技术；2）基于表征结果和相关理论，诠释系列电极材料的生长机理；3）基于相关理论及表征和性能测试结果，揭示基底与活性材料协同作用下的性能优化机理。

Transition metal compound nanomaterials are great potential candidate materials for non-enzyme hydrogen peroxide detection. However, three prominent problems (optimizing active materials with excellent electrocatalytic activity; enhancing the utilization rate of active materials and electron transfer rate) need to be solved in order to make this kind of materials possess superior performance of non-enzyme hydrogen peroxide detection. In this project, for solving the above mention problems, a series of the novel electrode materials with excellent non-enzymatic hydrogen peroxide detection performance were constructed by combining the transition metal (Ni/Co) selenide and self-supported flexible substrate materials (NSG-PEDOT) with high effective surface area and conductivity, and the related scientific problems were deeply studied. Main research contents as follows: 1) The effects of the various process parameters on the phase structure, composition, micro-morphology, surface/interface structure and performance of NSG-PEDOT and a series of transition metal (Ni/Co) selenide active materials are systematically studied. And a series of electrode materials with excellent electrochemical catalytic performance for non-enzyme hydrogen peroxide detection are obtained, meanwhile, the controllable fabrication techniques are mastered. 2) According to the results of the characterization and relevant theories, the growth mechanism of the electrode materials is illustrated. 3) According to the relevant basic theories and results of the characterization and performance tests, the optimized performance mechanism based on the synergistic effect of the substrate and active materials is revealed.