Structure and Catalytic Property Relationship of Core-Shell Metal Nanoparticles

核壳金属纳米粒子的结构与催化性能关系

• 批准号: 1213926
• 负责人: Hong Yang
• 金额: $ 37.53万
• 依托单位: University of Illinois at Urbana-Champaign
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2012
• 资助国家: 美国
• 起止时间: 2012-06-01 至 2016-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1213926&HistoricalAwards=false
• 关键词: Structure; Catalytic; Property; Relationship; Core

With this award from the Chemical Catalysis Program of the Chemistry Division Professor Hong Yan of the University of Illinois at Urbana-Champaign will develop new heterogeneous, metallic catalysts as well as fundamental understanding of the structural origins of their high performance in oxygen reduction reactions (ORR) and in chemical conversion of major by-products from biomass. Specifics aims are: 1) study of the preparation and fine nanostructures of M@Pt (core@shell) particle-on-particle heterogeneous nanostructures; 2) study of the structure and catalytic property relationship of M@Pt or M@PtM catalysts in ORR; 3) design, synthesis and ORR catalytic property of faceted heterogeneous Pt multimetallic nanocrystal catalysts; and 4) thermal chemical conversion of glycerol using on Pt-based core-shell heterogeneous catalysts. Preparation, atomic level characterization and structure-catalytic property relation of core-shell, heterogeneous nanostructures will be examined. Effect of particular structural issues such as facet and surface distortion on catalytic performance will be carefully studied. New production technologies using alternative energy sources, including hydrogen and biofuel, heavily depend on the development of new generation of advanced catalysts to facilitate and accelerate reactions using less energy than conventional systems. This project will directly address this technological challenge through the design and understanding of new bimetallic nanostructures. It will also serve as a training platform for students at all levels and with different social, economic backgrounds to become able scientists to carry out life-long research in the utilization of new sustainable energy sources. The knowledge gained during this work will be rapidly disseminated through scientific publications, conference presentations and web-based media.

伊利诺伊大学厄巴纳-香槟分校的洪岩教授获得了化学催化项目的奖项，他将开发新的非均相金属催化剂，并对其在氧还原反应（ORR）和生物质主要副产物化学转化中的高性能的结构根源有了基本的了解。具体目标是：1)研究M@Pt （core@shell）颗粒间非均相纳米结构的制备和精细纳米结构；2)研究ORR中M@Pt或M@PtM催化剂的结构和催化性能关系；3)面型多相Pt多金属纳米晶催化剂的设计、合成及其ORR催化性能；4)利用pt基核-壳非均相催化剂对甘油进行热化学转化。研究了核-壳非均相纳米结构的制备、原子水平表征和结构-催化性能关系。特殊的结构问题，如面和表面畸变对催化性能的影响将被仔细研究。使用替代能源的新生产技术，包括氢和生物燃料，在很大程度上依赖于新一代先进催化剂的开发，以促进和加速反应，使用比传统系统更少的能源。该项目将通过设计和理解新的双金属纳米结构来直接解决这一技术挑战。它还将成为一个培训平台，使各级不同社会、经济背景的学生成为有能力的科学家，在利用新的可持续能源方面进行终身研究。在这项工作中获得的知识将通过科学出版物、会议发言和网络媒体迅速传播。