高指数晶面Cu2O晶体的生长机理及其CO催化氧化性能研究

项目名称： 高指数晶面Cu2O晶体的生长机理及其CO催化氧化性能研究

项目编号： No.51302213

项目类型： 青年科学基金项目

立项/批准年度： 2014

项目学科： 一般工业技术

项目作者： 孙少东

作者单位： 西安交通大学

项目金额： 25万元

中文摘要： 研究表明：氧化亚铜（Cu2O）晶体中高指数晶面的存在，可以改变其催化氧化CO的反应机理和反应动力学，降低反应活化能，从而提高催化效率。然而，目前已经合成的含有高指数晶面的Cu2O晶体中均同时存在活性低的低指数晶面。迄今为止，完全由高指数晶面组成的高指数晶面Cu2O晶体尚未见文献报道。因此，本项目以获得具有高CO催化氧化性能的高指数晶面Cu2O晶体为目的，拟系统研究高指数晶面Cu2O晶体的液相合成工艺，阐明高指数晶面Cu2O晶体的生长机理，继而实现其可控合成。在此基础上，揭示Cu2O晶体中高指数晶面的调控对CO催化氧化性能的影响规律，明确高指数晶面结构与CO催化氧化性能的相关性，找到有效提高CO催化氧化效率的机制和途径。研究结果将为制备高效可靠且成本低廉的Cu2O催化材料提供理论指导和实验依据，对拓展其在环境保护中的应用具有一定意义。

中文关键词： 氧化亚铜；高指数晶面；生长机理；一氧化碳催化氧化；

英文摘要： Researches have demonstrated that the high-index facets of cuprous oxide (Cu2O) catalyst can change the reaction mechanism and kinetics of CO catalytic oxidation and reduce the reaction activate energy, finally leading to the enhancement of the catalytic efficiency. Although a number of Cu2O crystals partially exposed with high-index facets have been successfully synthesized, the presence of low-active low-index facets building blocks would decrease their chemical actives and limit their potential applications. So far, the relevant investigation of Cu2O crystals wholly exposed with high-index facets is still unavailable. In this project, in order to prepare Cu2O catalysts with high CO catalytic oxidation performances, we are designed to systematically study the synthesis process of Cu2O crystals wholly exposed with high-index facets by solution-phase routes and uncover the influence rule of reaction conditions and high-index facets. We would illustrate the formation mechanism of Cu2O crystals wholly exposed with high-index facets and achieve their shape-controlled synthesis. Based on the aforementioned results, we can uncover the reaction mechanism of CO catalytic oxidation involving different high-index facets, understand the relationship between high-index facet and CO catalytic oxidation performances, and fin

英文关键词： cuprous oxide；high-index facet；growth mechanism；carbon monoxide catalytic oxidation；