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.

凭借化学系化学催化项目的这一奖项，伊利诺伊大学厄巴纳-香槟分校的教授 Hong Yan 将开发新型多相金属催化剂，并对其在氧还原反应（ORR）中高性能的结构起源有基本的了解。 ）以及生物质主要副产品的化学转化。 具体目标是：1）M@Pt（核@壳）颗粒-颗粒异质纳米结构的制备和精细纳米结构研究； 2）M@Pt或M@PtM催化剂在ORR中的结构与催化性能关系研究； 3）多面多相Pt多金属纳米晶催化剂的设计、合成及ORR催化性能； 4）使用Pt基核壳多相催化剂进行甘油的热化学转化。 将研究核-壳、异质纳米结构的制备、原子级表征以及结构-催化性能关系。 将仔细研究特定结构问题（例如小面和表面变形）对催化性能的影响。使用氢和生物燃料等替代能源的新生产技术在很大程度上依赖于新一代先进催化剂的开发，以比传统系统使用更少的能源来促进和加速反应。该项目将通过设计和理解新型双金属纳米结构来直接解决这一技术挑战。它还将为各级、不同社会、经济背景的学生提供一个培训平台，使他们成为能够在新的可持续能源利用方面进行终身研究的科学家。 这项工作中获得的知识将通过科学出版物、会议演示和网络媒体迅速传播。