报告人：Peter C. Burns, Department of Civil and Environmental Engineering and Earth Sciences, University of Notre Dame

报告题目:  Uranium Peroxide Clusters

报告时间：2016年8月1日 下午 2:00 （星期一）

报告地点：放射医学与防护学院会议室（401一楼会议室）

报告摘要：Uranium peroxide nanoclusters are one unique subset of metal oxide clusters and have well-defined structures. They usually have a size of several nanometers and are much larger than the common small molecules and ions. Thus they may be used to separate uranium from uranium-bearing materials such uranium mineral and spent nuclear fuel in the form of nanoclusters. Due to such potential applications in the nuclear fuel cycles, uranium peroxide clusters have been intensively studied and about 80 clusters have been synthesized and characterized by our group over the past decade. In this presentation, I will report the formation mechanism of a uranyl cage cluster and how to control the size and topology of a cluster based on our experimental and computational studies. Then I will examine several typical uranyl cage clusters such as the only two uranium clusters with core-shell structures, the only two pairs of chiral uranium clusters, and the largest uranium cluster, and introduce their syntheses, crystallographic structures, stabilities, and self-assembly processes in the solution.

报告人简介：Burns教授是美国圣母大学土木工程与地质系和化学系双聘教授，并担任Center for Sustainable Energy at Notre Dame主任，Energy Frontier Research Center Materials Science of Actinides主任。研究方向重点是锕系元素的矿物学、配位化学、地球化学和纳米科学方面的性质。1988年获得University of New Brunswick学士学位，1990年获得University of Western Ontario的硕士学位，1994年获得University of Manitoba博士学位。目前主持多个美国能源部的重点项目，已在Science， JACS,  Angew等杂志发表300余篇学术论文。

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