119th General Meeting of the KCS

Type Poster Presentation
Area 전기화학
Room No. 포스터발표장
Time 4월 21일 (금요일) 13:00~14:30
Code ELEC.P-512
Subject Spontaneous synthesis of silver nanoparticles using carbon dots and their electrocatalytic application
Authors 임호섭, 심준호*
대구대학교 화학과, Korea
Abstract Carbon dots (CDs), mainly consisting of a graphite structure or amorphous carbon core and carbonaceous surfaces with rich oxygen-containing groups, have attracted tremendous interest because of their unique properties, including high surface area, superior electro-optical properties, high water solubility, and high chemical stability. In this presentation, a stable silver nanoparticles/CDs composite was prepared by using CDs as reducing and stabilizing agent. To the best of our knowledge, the use of CDs as reducing and stabilizing agents has rarely been reported in conjunction with their use in the fabrication of silver nanoparticles. The electrocatalytic activity of the silver nanoparticles/CDs for oxygen reduction and oxygen evolution reaction in alkaline media was investigated by rotating disk electrode, and cyclic voltammetry. Indeed, the resultant silver nanoparticles/CDs composite exhibited good catalytic activity for the reduction of oxygen, compared with the silver nanoparticles synthesized by citrate reduction. The compositional/structural features are characterized by high-resolution transmission electron microscopy, Fourier transform infrared and UV-Vis spectroscopy, and X-ray photoelectron spectroscopy. This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (2014R1A1A2054826 and 2016R1D1A1B03930895).
E-mail si4032@naver.com