123rd General Meeting of the KCS

Type Poster Presentation
Area Electrochemistry
Room No. Exhibition Hall 2
Time 4월 18일 (목요일) 11:00~12:30
Code ELEC.P-462
Subject Electrospun Iridium Nanotubes for Carbon Monoxide Oxidation Reaction
Authors Taehui Kwon, Areum Yu, Chongmok Lee, Youngmi Lee*
Department of Chemistry and Nano Science, Ewha Womans University, Korea
Abstract In these days, carbon monoxide (CO) is a universal poisonous air pollutant. As a cleaning method for this toxic gas, electrochemical oxidation of CO to carbon dioxide (CO2), in some cases with water assistance, using active electrocatalysts is continually studied. Precious metals, such as Pt and Pd, are well-known complete oxidation catalysts with good activity and stability. Meanwhile, iridium and iridium oxide are also studied in various ways. However, there is still lack on research of CO oxidation with Ir. In this work, metallic iridium nanotubes are synthesized by electrospinning, heat-treatment (calcination) and additional reduction process. We examine the morphologies of the prepared iridium nanotubes by field-emission scanning electron microscopy (FE-SEM) and confirm the reduction of iridium oxide nanotubes to the metallic Ir counter part by X-ray diffraction (XRD). Electrochemical activity for CO oxidation is measured by cyclic voltammetry and amperometric i-t curve in 0.5 M H2SO4 aqueous solution containing 0.03 M NaCl. Conclusively, metallic iridium nanotubes show a good sensitivity for CO oxidation. This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT& Future Planning (NRF-2017R1A2A2A14001137).
E-mail kwonth9601@gmail.com