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-473
Subject Analysis of Oxidizing occurrence of Single Nickel Nanoparticle for Urea Oxidation by Electrocatalytic method.
Authors Myung Jun Lee, Seong Jung Kwon*
Department of Chemistry, Konkuk University, Korea
Abstract The current detected by the collided single nanoparticle (NP) of Nickel (Ni) on a Platinum (Pt) ultramicroelectrode (UME) surface was detected by electrocatalytic amplification method. A linear increase of collision frequency and transient current signal as a function of time was detected​ by the Ni NP oxidized to Nickel oxide NP. The same results were detected when Ni NP was oxidized by purging oxygen gas for a period of time. The used electrochemical reaction was urea oxidation in alkalinesolution because Ni has electrocatalyst characteristic for the urea oxidation in alkaline solution. The transient current signal detected by a single Ni NP on the Pt UME shows a staircase signal with involving slow signal decay. The applied potential and concentration of urea were optimized for increasing signal to noise ratio. The magnitude of current signal and signal frequency were analyzed. Through analysis of the electrocatalytic characteristic of single Ni NPs, this study offers insight toward their future application.
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