掺杂元素对钛基二氧化铅电极电催化氧化性能的影响和调控机理研究

项目名称： 掺杂元素对钛基二氧化铅电极电催化氧化性能的影响和调控机理研究

项目编号： No.20873051

项目类型： 面上项目

立项/批准年度： 2009

项目学科： 环境科学、安全科学

项目作者： 林海波

作者单位： 吉林大学

项目金额： 34万元

中文摘要： 将现代仪器测试技术与电化学研究方法、溶液的常规仪器分析相结合，主要研究掺杂二氧化铅电极涂层的表面电子结构、聚集状态、非化学计量性（如离子缺陷、电子缺陷、固态氧化还原特性等）、化学键结构、协同效应等物理化学特性以及与有机污染物氧化降解的电催化活性关系，深入认识掺杂元素对Ti/PbO2电极性能的影响和机理，为提高Ti/PbO2电极的电催化活性和寿命、改善电极的选择性，设计和研制高效、长寿命的新型PbO2电极奠定理论基础。主要内容包括：掺杂Ti/PbO2电极的制备工艺研究；电极表面物理和化学特性研究；掺杂元素对电极表面结构和电极电催化活性位的影响；研究电极的电催化氧化降解性能，分析掺杂元素对电极电催化活性的作用机制；研究元素掺杂对电极性能的影响规律；用特定的电催化过程验证掺杂元素对Ti/PbO2电极性能的影响和调控机理。发表10－15篇高水平论文，申请发明专利1－3项。

中文关键词： 二氧化铅电极；掺杂元素；电催化；影响；机理

英文摘要： Combining modern testing technology, normal analysis of solution and electrochemical method, it is mainly investigated that electronic, non-stoichiometry (defect of ions and electronic, solid redox properties), bond, synergic effect of the electrode and some other physical chemical properties, the relation between it and electrocatalytic activity of degradation of organic pollutant, deeply understanding the mechanism and influence of doped element on the properties of the electrode. To improve the electrocatalytic activity of Ti/PbO2 and prolong the service life, change it electivity, we prepare and design new Ti/PbO2 electrode with higher activity and longer service life, and establish the theoretical outline for synthetic electrode. Preparation of doped lead dioxide on the substrate of Titanium; physical and chemical properties of the surface of electrode; effect of doped element on the structure and electrocatalytic activity of the electrode; capability of the electrode degrading organic pollutant, and understanding the mechanism of doped element influencing the activity of the electrode; research regulation of element changing the activity of the electrode; confirm the effect of doped element on the properties of the electrode and mechanism of controlling the properties of the electrode.

英文关键词： PbO2/Ti; doped element; electrocatalysis; effect; mechanism