121st General Meeting of the KCS

Type Symposium
Area Functional Nanocomposite Materials
Room No. Samda Hall A
Time FRI 15:50-:
Code MAT3-5
Subject Plasmonic Metal-Semiconductor Photocatalysts for Efficient Hydrogen Evolution by Water Splitting
Authors Jong Wook Hong
Chemistry, University of Ulsan, Korea
Abstract Plasmon-induced photocatalysis has recently led the rapid progress in enhancing photocatalytic efficiency under visible light irradiation, including the aspects for environmental and energy applications such as CO2 conversion, water splitting, and pollutant treatment. Plasmon-induced photocatalysis makes use of plasmonic metal nanocrystals dispersed into semiconductors and contain two prominent factors such as Schottky junction and localized surface plasmon resonance (LSPR). The Schottky junction reveals the advantages to charge separation and transfer whereas LSPR contributes to the efficient absorption of visible light and formation of active electron/hole pairs. Notably, LSPR could boost the generation of electrons and holes in semiconductor photocatalysts through two different effects-the LSPR sensitization effect and the LSPR-powered bandgap breaking effect. Herein, we introduce the rational two plasmonic metal-semiconductor photocatalysts with rational morphologies. Owing to rational design of plasmonic metal-semiconductor photocatalysts, comprehensive understanding on plasmon-induced photocatalysis was achieved and the photocatalysts prepared showed enhanced photocatalytic hydrogen production activities compared their counterparts in visible light.
E-mail jwhong@ulsan.ac.kr