报告题目: Plasmon-Mediated Surface Chemistry for Solar Photocatalysis
报告人: 卫伟 博士
时间: 2015年6月24日（周三）上午10:00-11:00
地点: 化工学院二层214学术报告厅。
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报告人简介：
卫伟博士，美国佛罗里达大学化学系。1997年毕业于北京大学获化学专业学士学位，2000年毕业于北京大学获材料化学专业硕士学位；2005年博士毕业于德克萨斯大学奥斯汀分校获物理化学专业博士学位；2006-2009年分别在美国德克萨斯大学奥斯汀分校与西北大学做博士后研究；2009年至今就职于佛罗里达大学化学系。研究工作涉及纳米材料界面的光电性能研究，如表面等离子体共振（SPR）介导的界面电子转移（ET）；可见光光催化及其在太阳能转化中的应用；多元细胞质介导的活性纳米杂化材料的应用，如化学和生物传感等。发表 Nat. Chem., JACS, Angew. Chem., Adv. Mater., Nano Lett.等国际主流期刊论文近50篇，授权美国发明专利6件，获得各类学术荣誉11次，获得各类邀请学术报告70余次。
报告摘要：
Using sunlight to facilitate and promote valuable chemical reactions is an ideal solution to the challenge of meeting future energy demands. Our group aims to address fundamental questions concerning surface plasmon resonance (SPR)-mediated interfacial electron transfer (ET) and photothermal heating in order to develop new materials and strategies for efficiently converting solar energy to chemical energy. In this talk, I will show how we unambiguously reveal the mechanics of plasmon-mediated electron transfer (PMET) in Au/TiO2 heterostructures under visible light (λ > 515 nm) during in situ operation. I will further discuss how we directly probe the relaxation dynamics and energetics of the transferred “effective hot electrons” that participate in photocatalytic reactions. I will explore some strategies for manipulating “hot electrons” for the rational design and construction of a new class of multi-component solar photocatalysts for efficiently producing H2 from water. Finally, I will touch on our recent effort to use SPR-mediated photothermal effects to synthesize hybrid bimetallic nanomaterials and then use these nanomaterials to oxidize CO in the presence of visible light.