聚吡咯/Pd(Au,Pt)@HSiO1.5复合电极的一体化构建及协同催化机制研究

针对严重影响环境和人类健康的过氧化氢污染这一重大问题，本项目提出以吡咯为前驱体，空心笼状纳米Pd(Au,Pt)@HSiO1.5复合颗粒为骨架，三氯化铁为引发剂，诱导聚合得到一体成型的聚吡咯/空心笼状纳米Pd(Au,Pt)@HSiO1.5复合电极。通过以过氧化氢为研究对象，结合多种电化学分析技术，利用聚吡咯/空心笼状纳米Pd(Au,Pt)@HSiO1.5复合电极对过氧化氢进行研究分析，获得过氧化氢电催化氧化的电化学响应和特征信号，探讨聚吡咯和贵金属Pd(Au,Pt)对过氧化氢电催化动力学和电化学过程，揭示聚吡咯和贵金属Pd(Au,Pt)对过氧化氢电催化的协同机制。预期构筑一种对过氧化氢具有高效催化活性和高灵敏度的新型纳米多级孔电化学传感器，实现对过氧化氢的高效催化分解和快速定量检测分析。同时为研究聚吡咯和贵金属电催化过氧化氢相互协同增强机制提供重要科学依据和奠定理论基础。

Hydrogen peroxide pollution has become a serious environmental issue, which is a serious threat to human health and environment. This project is aim at the fabrication of a novel electrochemical sensor with high catalytic activity and high sensitivity for detecting hydrogen peroxide. For this purpose, integration of polypyrrole/Pd(Au,Pt)@HSiO1.5 composite electrodes are fabricated by induced polymerization with pyrrole as the precursor, ferric chloride as the initiator and nano hierarchically porous Pd(Au,Pt)@HSiO1.5 composite particles as the framework. This project is focused on researching the synergistic catalysis mechanism between polypyrrole and Pd(Au,Pt) on hydrogen peroxide by advanced electroanalytical techniques. Hydrogen peroxide will be systematically investigated by polypyrrole/ Pd(Au,pt)@HSiO1.5 composite electrodes. The kinetics and electrochemical process of electrocatalying hydrogen peroxide will be deeply studied by obtaining its electrochemical response and characteristic signals. This project is anticipated to reveal the synergistic catalysis mechanism between polypyrrole and Pd(Au,Pt) on electrocatalying hydrogen peroxide. This project provides an important scientific basis for researching synergistic enhancement mechanism of electro-catalyzing hydrogen peroxide between polypyrrole and precious metal, and lay a theoretical foundation.