【环境讲坛100期】Photo(electro)catalysis for Energy and Environmental Applications
来源： 发布时间：2019-09-25 点击次数：
报告人：Prof. Wonyong Choi
The photoinduced electron transfers occurring at the semiconductor surface are the key process of solar photosynthetic and photocatalytic processes. This phenomenon has been extensively investigated for the environmental purification of water and air and the solar energy storage through solar fuel synthesis: the former is photocatalytic and the latter is photosynthetic. Metal oxides semiconductors such as TiO2, WO3, and Fe2O3 and polymeric carbon nitride (g-C3N4) that consist of earth-abundant elements are the most practical base materials for such applications. The semiconductor materials have been employed in the form of nanoparticles for photocatalysis and electrodes for photoelectrochemistry. Although both environmental and energy conversion processes are based on the same photoinduced charge transfer phenomenon, the specific characteristics required for one are very different from the other. While intensive research activities are focused mainly on the development of new photocatalytic materials, the limitations and challenges in photocatalytic research need to be more seriously considered and studied. A variety of approaches have been investigated to modify the base semiconductors and to control the photocatalytic activity and mechanisms using diverse inorganic and organic materials. In this talk, various semiconductor systems with interfacial heterojunctions will be introduced and discussed for photoelectrochemical and photocatalytic/photosynthetic applications. Each research example will be discussed in view of how the modified semiconductor interface affects the photocatalytic activities and mechanisms.
Wonyong Choi教授，现任韩国浦项科技大学澳门新葡8455最新网站教授、韩国科学院院士、英国皇家学会会士，1996年于美国加州理工学院环境科学专业获得博士学位，1996-1998年在美国NASA/Caltech Jet Propulsion Laboratory (JPL)实验室从事博士后研究，1998年进入韩国浦项科技大学澳门新葡8455最新网站工作，目前还担任Environmental Science &Technology副主编，美国化学会期刊Environmental Science & Technology、Journal of Physical Chemistry和英国皇家学会Energy and Environmental Science等编辑顾问委员会委员。曾获得“KAST Science and Technology Award”奖；KIST Excellent Researcher Award奖；“青年科学家奖”等。至今已经发表学术论文270多篇论文，总引用次数超过39000次，H-index为83。目前主要开展半导体光催化在环境与能源方面的应用；光催化产氢；可见光响应光催化剂的研发；水和大气的光催化净化；深度氧化降解(AOPs)；环境光化学以及环境中的氧化还原过程等。