인문학
사회과학
자연과학
공학
의약학
농수해양학
예술체육학
복합학
DBpia AI
AI 에이전트
AI 아이디어
AI 리더
AI 뷰어
Citeasy
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지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록·키워드
Metal-carbon core-shell nanostructures have gained research interest, due to their valuable properties, such as high reactivity, stability, catalytic, optical, and electrochemical properties. However, the uses of metal-carbon core-shell nanostructures are limited due to the complicated synthesis processes. Therefore, developing a simple and fast method for synthesizing metal-carbon core-shell nanostructures is one of the main targets. In this work, the encapsulation of copper core by a nitrogen-doped graphene shell (Cu-NG) was successfully fabricated using a one-step solution plasma discharge process (SP) at different plasma powers. The structure of the prepared Cu-NG core-shell at different powers was confirmed and verified by X-ray photoelectron microscopy (XPS), high-resolution transmission electron microscopy (HR-TEM), X-ray diffraction (XRD), ultraviolet-visible spectroscopy (UV-Vis), Fourier transform infrared spectroscopy (FTIR), and Raman shift measurements. The structural analyses exhibited a fine core-shell structured nanoparticle with a size range of 5 to 15 nm, dependent on plasma discharge power. Notably, the N-doped graphene shell was favored at low power (120 W). The electrocatalytic activity toward the oxygen reduction reaction (ORR) of the obtained samples in an alkaline solution was acceptable. The effective ORR activity was possibly attributed to the synergistic effect of the copper core and N-doped graphene shell. This study provides eco-friendly and cheap alternative ORR catalysts with acceptable electrocatalytic activity.
인공지능 문자 인식 모델을 통해 추출된 텍스트로, 일부 오타나 오류가 포함될 수 있으나 지속적으로 개선 중입니다.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.
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