120th General Meeting of the KCS

Type Poster Presentation
Area Material Chemistry
Room No. Exhibition Hall 2+3
Time 10월 19일 (목요일) 11:00~12:30
Code MAT.P-391
Subject Enhanced Electrocatalyst Performance of Mesoporous Carbon@Metal Oxide Heterolayered Hybrid Nanosheets
Authors yunkyung Jo, Seong-Ju Hwang*
Center for Hybrid Interfacial Chemical Structure (CICS),Department of Chemistry and Nanoscience, Ewha Womans University, Korea
Abstract Mesoporous carbon@metal oxide heterolayered hybrid nanosheets can be synthesized by the anchoring of mesoporous carbon on the surface of exfoliated metal oxide nanosheet. The exfoliated metal oxide acts as an efficient substrate for stabilizing two-dimensional lattice of mesoporous carbon with extremely high surface areas and controlled pore size distribution. Field emission-scanning electron microscopic and energy dispersive spectrometric analyses clearly demonstrate the formation of mesoporous carbon shell on the core of metal oxide 2D nanosheet. The resulting heterolayered hybrid nanosheets show outstanding electrocatalytic activity for oxygen reduction reaction with a lower on-set potential and a larger number of electron transfer (~4), which are much superior to that of mesoporous carbon. This the first report about the heterolayered hybrid nanosheet of mesoporous carbon@layered metal oxide.
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