인문학
사회과학
자연과학
공학
의약학
농수해양학
예술체육학
복합학
DBpia AI
AI 에이전트
AI 아이디어
AI 리더
AI 뷰어
Citeasy
크롬 서지관리 다운로드
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
ABSTRACT The exsolution method has garnered significant attention owing to its high efficacy in developing highly efficient and stable metal nanocatalysts. Herein, a versatile exsolution approach is developed to embed size‐tunable metal nanocatalysts within a conductive metal pnictogenide matrix. The gas‐phase reaction of Ru‐substituted Ni–Fe‐layered‐double‐hydroxide (Ni 2 Fe 1− x Ru x ‐LDH) with pnictogenation reagents leads to the exsolution of Ru metal nanocatalysts and a phase transformation into metal pnictogenide. The variation in reactivity of pnictogenation reagents allows for control over the size of the exsolved metal nanocatalysts (i.e., nanoclusters for nitridation and single atoms for phosphidation), underscoring the effectiveness of the pnictogenation‐driven exsolution strategy in stabilizing size‐tunable metal nanocatalysts. The Ru‐exsolved nickel–iron nitride/phosphide demonstrates outstanding electrocatalyst activity for the hydrogen evolution reaction, exhibiting a smaller overpotential and higher stability than Ru‐deposited homologs. The high efficacy of pnictogenation‐assisted exsolution in optimizing the performance and stability of Ru metal nanocatalysts is ascribed to the efficient interfacial electronic interaction between Ru metals and nitride/phosphide ions assisted by the inner sphere mechanism. In situ spectroscopic analyses highlight that exsolved Ru single atoms facilitate more efficient electron transfer to the reactants than the exsolved Ru nanoclusters, which is primarily responsible for the superior impact of the phosphidation‐driven exsolution approach.
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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