铟掺杂多相结薄膜对金属的光电化学抗腐蚀机制研究

项目名称： 铟掺杂多相结薄膜对金属的光电化学抗腐蚀机制研究

项目编号： No.41206067

项目类型： 青年科学基金项目

立项/批准年度： 2013

项目学科： 海洋科学

项目作者： 孙萌萌

作者单位： 中国科学院海洋研究所

项目金额： 24万元

中文摘要： 本项目将对一种新型金属抗腐蚀保护方法-光电化学法进行研究，研究铟掺杂多相结可见光响应半导体光电材料在海洋环境中对金属的抗腐蚀保护性能。光电薄膜对金属的抗腐蚀仅利用清洁太阳能激发半导体光电材料产生光生电子，传输到被保护金属上，使之处于富电子状态而避免被氧化腐蚀。与牺牲阳极保护法比，不消耗薄膜材料本身；与外加电流保护法比，对环境保护及能源利用有显著优势。本项目从能级结构包括导带和价带位置的调整出发，应用合理的掺杂方法，针对可见光响应的导带位置较负（即抗腐蚀电位较负）的铟掺杂多相结可见光材料进行研究，探索掺杂改性条件、生长形貌、能带结构对其光电化学抗金属腐蚀性能的影响。通过调整掺杂条件来调控光电化学抗金属腐蚀性能，探索调控机制。同时考察铟掺杂改性的光电材料与新型储电子材料匹配后的协同作用性能，使其在夜间或阴天可持续对金属构筑物进行抗腐蚀保护。

中文关键词： 光电化学阴极保护；铟化合物；多相结；可见光；微结构

英文摘要： This research project will focus on the investigation of a novel anticorrosion method- - the photoelectrochemical method for metals protection. In principle, the anticorrosion of metals using photovoltaic film is that utilizing solar energy to excite the semiconductor materials to generate photo-induced electrons, and then these photo-induced electrons are transmitted to the protected metal and keep the metals in an electron-rich state to avoid being corroded. Compared with the sacrificial anode protection, this technique does not consume coating material itself. Compared with the cathodic protection of impressed current, it possesses predominant advantages for environmental protection and energy utilization because the energy come from clean solar energy. This proposal will investigate the photoelectrochemical anticorrosion property of indium doped TiO2 and ZnO heterojunction semiconductor materials by adjusting the energy band structure, including the conduction band and valence band locations. The effects of doping condition, growth feature and energy band structure on photoelectrochemical property and further the corrosion resistance property will be studied. By adjusting doping condition to adjust and control the photoelectrochemical anticorrosion property, and then the mechanism of the adjustment and contr

英文关键词： Photoelectrochemical cathodic protection；indium compound；heterojunction；visible light；micro-structure