121st General Meeting of the KCS

Type Poster Presentation
Area Electrochemistry
Room No. Event Hall
Time 4월 20일 (금요일) 11:00~12:30
Code ELEC.P-594
Subject Enhanced photocatalytic activity of CuBi2O4 photocathode decorated with metallic cocatalysts
Authors Sung Ki Cho
Department of Chemical Engineering, Kumoh National Institute of Technology, Korea
Abstract In photoelectrochemistry, p-type semiconductor is a useful material as it can be employed in water splitting and CO2 reduction. Generally, the conversion efficiencies of those photoelectrochemical reductions are much lower than the inherent quantum efficiency of the photoelectrode. It is originated from the slow kinetics of those chemical reactions, and can be improved by loading cocatalyst on the photoelectrode. In this study, various metallic cocatalysts were loaded on CuBi2O4 p-type semiconductor via various methods such as photodeposition, dropcast, evaporation, and their photoelectrochemical properties were examined in CO2-saturated bicarbonate solution. In addition, the products of photoelectrochemical reduction were analyzed with scanning electrochemical microscope in order to understand the relation between the cocatalyst and the selectivity of CO2 reduction.
E-mail chosk@kumoh.ac.kr