美国圣母大学Peter C Burns教授学术报告(报告题目:Uranium Peroxide Clusters)

   发布时间: 2016-08-02    已访问: 125

  

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

报告题目:Uranium Peroxide Clusters

时间:2016年8月3日(星期三)16:30-17:30

地点:环境学院326

报告人简介:

Prof. Peter Burns is currently a professor at Department of Civil and Environmental Engineering and Earth Sciences, and director of the Energy Frontier Research Center Materials Science of Actinides, University of Notre Dame, USA. He received his Ph.D in geology from University of Manitoba. He teaches courses in geology, mineralogy and actinide chemistry. His main research fields include actinides chemistry, structural studies of uranium compounds, nano-structural materials synthesis and evaluation, geological chemistry of radioactive waste disposal.

He has published over 300 scientific papers including Science, Chem Soc Rev, JACS and Angew et al. He is a life fellow of Mineralogical Society of America and Thompson ISI top ten most highly cited geoscientists 1996-2007. He served as President of International Mineralogical Association, President of Mineralogical Association of Canada; Vice President of Mineralogical Association of Canada; Member of Council, Mineralogical Society of America; Editorial Advisory Board of Elements, An International Magazine of Mineralogy, Geochemistry and Petrology; Associate Editor of American Mineralogist.

报告内容简介:

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.

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