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  • 09월 08일 17시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제116회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Synthesis and Electrochemical Characterization of Silver Ion Treated Electrospun Cobalt Nanotubes

2015년 9월 2일 13시 55분 26초
ELEC.P-547 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
10월 16일 (금요일) 13:00~14:30
저자 및
유아름, 김명화1, 이종목, 이영미*
이화여자대학교 화학나노과학과, Korea
1이화여자대학교 화학 나노과학과, Korea
Recently much attention has been paid to one-dimensional (1D) nanostructures. One of the most promising method to prepare 1D nanostructures is electrospinning. Electrospinning has gained much attention due to not only its diversity of the electrospinning materials but also its simplicity. In this study, we prepare Co nanotubes by electrospinning, followed by calcination and reduction. AgCo nanotubes are synthesized through the galvanic replacement reactions (GRR) between Co nanotubes and Ag precursor in aqueous solution and characterized electrochemically. In order to optimize the synthetic condition for AgCo nanotubes, we control the reduction time of Co3O4 nanotubes and the GRR time between Co nanotubes and Ag precursor. The morphologies and compositions of the prepared AgCo nanotubes are characterized by field-emission scanning electron microscopy, transmission electron microscopy, X-ray diffraction and X-ray photoelectron spectroscopy. For the electrochemical characterization, three-electrode cell is used with a glassy carbon electrode loaded with the synthesized AgCo nanotubes as the working electrode and a saturated calomel electrode (SCE) as the reference electrode, and a coiled platinum wire as the counter electrode. Electrochemical activities of these nanomaterials for oxygen reduction reaction (ORR) are characterized with rotating disk electrode (RDE) voltammetry in 0.1 M NaOH aqueous solution. The ORR catalytic activity of AgCo nanotubes is compared with the ones of Ag nanowires and Co nanotubes. 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 (2014R1A2A2A05003769).