报告时间： 2013年5月16日下午14：30
报告地点：催化楼3楼会议室
报告人: 路军岭 教授
中国科学技术大学化学与材料科学学院化学物理系
Supported metal nanoparticles are among the most important catalysts for many practical reactions. The catalytic performance strongly depends on the size, composition, and structure of the metal nanoparticles as well as the underlying support. Conventional synthesis methods including impregnation, ion exchange, and deposition-precipitation have been used to control and tune these factors, to establish structure-performance relationships, and to develop better catalysts. Meanwhile, the stability of metal nanoparticles against sintering has been improved by the application of protective layers, such as polymers and oxides that encapsulate the metal particle. This often leads to decreased catalytic activity due to a lack of precise control over the thickness of the protective layer.
A promising new method of catalyst synthesis is atomic layer deposition (ALD). ALD is a variation on chemical vapor deposition wherein metals,
oxides, and other materials are deposited on surfaces via a sequence (usually binary) of self-limiting reactions. The self-limiting character of
the reactions makes it possible to achieve uniform deposits on high-surface-area porous solids. Hence, design and synthesis of advanced catalysts at the nanoscale becomes possible through precise control over the structure and composition of the underlying support, the catalytic active sites, and the protective layer. In this presentation, I will describe the application of ALD to synthesize highly uniform supported metal catalysts and to apply oxide overcoats with atomically-precise thickness control for stabilization of metal nanoparticles while preserving their catalytic function.
报告人简历：
路军岭，中国科学技术大学化学与材料科学学院、化学物理系教授。2007年于中科院物理研究所博士毕业。2004至2006年，赴德国Fritz-Haber-Institute马普所工作访问。2007至2013年，先后在美国西北大学表面与催化中心和美国阿贡国家实验室从事博士后研究工作。多年来，一直从事表面物理，表面物理化学的基础研究，以及负载型纳米催化剂的制备、表征和催化性质研究等工作。其中在利用原子层沉积技术（ALD）实现在原子层面上对金属催化剂的精确改性、及新型催化剂的精确设计和制备方面做出了较为出色的工作。先后在Science, Acc. Chem.Res., Nature Chem., Angew. Chem. Int. En., Phy. Rev. Lett., J. Am. Chem.Soc.等期刊发表SCI论文近30篇，学术章节一篇和发表国际专利2项。
主要研究领域包括：
1.围绕利用ALD 技术开展催化剂改性的基础和应用研究。
2.利用 ALD 在原子层面上设计和构建新型催化剂的方法研究。
3.催化活性测试以及反应机理、反应动力学研究。
4.表面物理化学研究。
近期代表性论文:
1.J. Lu, J. W. Elam. P. C. Stair, Acc. Chem. Res., (2013) DOI:
10.1021/ar300229c.
2.J. Lu, et al., Science, 335 (2012), 1205-1208.
3.C.P. Canlas, J. Lu, et al., Nature Chem., 4 (2012) 1030.
4.J. Lu, P. C. Stair, Angew. Chem. Int. Ed. 49 (2010) 2547.
5.J. Lu, et al., Chem. Mater., 24 (2012) 2047.
学术章节:
1.J. Lu, Y. Lei, J. W. Elam, Atomic Layer Deposition of Noble Metals –New Developments in Nanostructured Catalysts, InTech, ISBN 978-953-307-898-4, Chapter 8, P159-178 (2012)
报告联系人：DNL16 李丹（9005）
