报告题目：Charge Transfer in Photocatalysts and Solar Energy Materials
报告人：Dr. Nianqiang WU，WV Nano Initiative, Department of Mechanical & Aerospace Engineering, West Virginia University, USA
时间：2010年7月8日上午10:00 - 11:00
地点：曹光彪大楼326室
吴年强博士简介：
吴年强博士1986年进入浙江大学材料系学习，1997年浙江大学材料系博士毕业，同年晋升副教授。1999-2001年赴美国匹兹堡大学做博士后，之后在美国西北大学负责Keck表面中心工作。2005年受聘西弗吉尼亚大学助理教授，2010年晋升副教授。吴年强博士是硅材料国家重点实验室的客座研究教授。研究兴趣包括纳米材料、纳米光刻技术、生物传感器、光催化和太阳能电池材料。先后在JACS(3)，Nano Letter(2)，Advance Materials(2)，Small(3)等期刊上发表50余篇论文，他引近900次。
自2006年起，已有3位浙江大学材料系毕业生在吴年强博士课题组攻读博士，从事光催化材料、纳米生物材料、燃料电池等方面研究工作。吴年强博士此次学术报告将重点介绍课题组在光催化、太阳能电池材料中的电荷转移和复合过程方面的研究工作。
Charge Transfer in Photocatalysts and Solar Energy Materials
Abstract: This presentation will deal with photo-excited charge separation, charge transport and charge recombination processes that are involved in photocatalysts and solar energy materials. The charge transfer processes determine the catalysis efficiency of photocatalysts and the energy conversion efficiency of solar cells. This talk will demonstrate that the charge transfer processes are tuned by the particle size, shape, surface structure and dopant of homogeneous nanocrystals. The speech will also discuss the charge transfer in the quantum dots/metal oxide and the carbon/metal oxide heterojunctioned-nanocrysal systems, in which quantum dots and carbon act as photo-sensitizers. The results obtained show that heterojunction-structured nanocrysal systems enable the photo-excited charge separation and the charge transport in the meanwhile suppress the charge recombination process, which is beneficial to the photocatalysis efficiency and the energy conversion efficiency. Finally, the talk will show the interaction of photocatalysts with bacteria and biological cells.
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2010年7月6日
