Catalysis, Adsorption and Charge Transfer Kinetics in Reactions at Electrodes

该项目属于分析和表面化学的一般领域，以及电化学子领域。它包括五个具体的研究内容：(1)明确定义的Langmuir-Blodgett取向分子膜中电子转移动力学的研究；(2)胶体粘土负载电子转移介体的电催化；(3)二氧化氧电催化还原的机理研究；(4)多金属氧酸盐作为电催化试剂的研究；以及(5)含氮化合物的氧化电催化。这些研究涉及跨膜状分子结构的非均相电子转移动力学的基本问题，对高效燃料电池技术至关重要的二氧化氧电化学的基础研究，以及新催化系统的开发和评估，利用该催化系统可以选择性地以经济高效的方式进行所需材料的电化学生产。该项目目标的实现有望增进我们对膜-溶液界面电子传递过程的基本原理的理解，这对生物传感器的开发是必不可少的，并定义新的电催化系统，利用该系统可以促进经济的电合成以及电能和化学能的有效相互转换。

This project is in the general area of analytical and surface chemistry and in the subfield of electrochemistry. It contains five specific research thrusts: (1) Studies of electron transfer kinetics across well-defined Langmuir-Blodgett oriented molecular films; (2) Electrocatalysis using colloidal clay-supported electron transfer mediators; (3) Mechanistic studies of the electrocatalytic reduction of dioxygen; (4) Studies of polyoxymetallates as electrocatalytic reagents; and (5) Oxidative electrocatalysis using nitroxyl compounds. These studies address fundamental issues in heterogeneous electron transfer kinetics across membrane-like molecular structures, basic studies in the electrochemistry of dioxygen that are of prime importance to efficient fuel cell technology, and the development and evaluation of new catalytic systems with which the electrochemical production of desired materials can be made to proceed selectively and cost effectively. Realization of the goals of this project can be expected to enhance our understanding of the fundamentals of electron transfer processes at membrane-solution interfaces, which is essential to the development of biosensors, and to define new electrocatalytic systems with which economical electrosyntheses and the efficient interconversion of electrical energy and chemical energy can be facilitated.