含磷铂基合金纳米结构的可控合成、结构调控与电催化性能

项目名称： 含磷铂基合金纳米结构的可控合成、结构调控与电催化性能

项目编号： No.21373149

项目类型： 面上项目

立项/批准年度： 2014

项目学科： 物理化学

项目作者： 张兵

作者单位： 天津大学

项目金额： 40万元

中文摘要： 铂基合金纳米材料作为重要的燃料电池催化剂，已成为当前纳米化学与能源科学领域中的研究热点，但如何有效地提高催化剂活性和稳定性以及降低催化剂成本仍有待进一步研究。研究表明，构建含磷铂基合金纳米结构有助于获得具有优越性能的电催化材料。但在当前，如何以简便而有效的方法实现含磷铂基合金材料的合成，并对其形貌、结构和组成等进行有效调控仍是该研究领域的一大难题和挑战。本项目旨在发展多种含磷铂基合金纳米结构的可控合成方法，系统研究材料形貌、结构、尺寸等与实验工艺参数的依赖关系，研究材料的形成和生长机理以及其对有机小分子电氧化反应的催化行为，详细分析材料的形貌、结构和组成等对其性能的影响。本实验的研究成果将为纳米材料的可控合成提供新的思路，对研制具有优越性能的电催化材料和理解催化剂作用下有机小分子电氧化反应机理有重要意义。

中文关键词： 含磷纳米材料；铂基合金；化学转化；催化；构效关系

英文摘要： As an important type of electrocatalysts in fuel cells, platinum-based alloy nanostructures have become a research focus in the field of energy science and nanochemistry. How to improve the catalytic activity and stablity, and simultaneously decrease the cost of electrocatalysts still remains an issue in the synthesis and applications of these materials. Present achievements have demonstrated that doping P into Pt or Pt-based nanostructures can enhance their catalytic performance. However, the fabrication of P-doped Pt-based nanomaterials with well-defined morphologies, structures and compositions remains a great scientific and technical challenge due to their complicated synthetic chemistry. This project aims at developing effective synthetic methods for fabricating P-doped Pt-based alloy nanostructures with controlled morphology, structure, as well as composition; exploring the relationship between these parameters and the experimental conditions; studying the formation and growth mechanism of these as-prepared materials by various advanced characterization techniques. To study structure-dependent electrocatalytic performance and explore their applications in electrocatalysis, The electrocatalytic behaviors of these as-obtained nanostructures towards the small organic molecular electrooxidation reaction will

英文关键词： P-containing nanomaterials；platinum-based alloys；chemical transformation；catalysis；structure-activity relationship