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-615
Subject Electrochemical sensor for hydrogen peroxide detection based on metal nanoparticles-porous carbon composite
Authors Won-Chul Lee, Yoon Bo Shim*
Department of Chemistry, Pusan National University, Korea
Abstract A highly sensitive electrochemical hydrogen peroxide (H2O2) sensor was developed using metal nanoparticles-decorated porous carbon (Me-PC) electrode with a functionalized conductive polymer (TBA). The sensor probe was fabricated by electro-polymerization of TBA using potential cycling method, and then drop casting Me-PC onto the pTBA layer. The characterization of each sensor surface was performed using cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), and energy dispersive X-ray spectroscopy (EDS). Experimental parameters were optimized in terms of pH, temperature, applied potential, amounts of Me-PC, and TBA monomer concentration. The proposed sensor exhibited a fast response time < 1s and a calibration plot was obtained in the dynamic range between 0.5 μM and 3.0 mM of H2O2 with a detection limit of 200 nM.
E-mail wclee13@pusan.ac.kr