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제116회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Mechanistic Insight into the Yolk@Shell Transformation of MnO@Silica Nanospheres Incorporating Ni2+ ions: the Solid-State Route toward a Colloidal Hollow Nanoreactor

등록일
2015년 9월 2일 21시 37분 01초
접수번호
1163
발표코드
INOR.P-124 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
10월 15일 (목요일) 11:00~12:30
발표형식
포스터
발표분야
무기화학
저자 및
공동저자
김진구, 이인수*
포항공과대학교(POSTECH) 화학과, Korea

As an effort to develop a simple and versatile synthetic strategy that contributes the evolution of hollow nanostructures with increasing complexity and functionality, this research was devoted to study the hollow transformation within a nano-sized solid matrix. Through an in-depth investigation of a hollowing process of MnO nanocrystal confined within a Ni2+ incorporating silica nanosphere, we could explain a very distinctive transformation pathway that produces the yolk@shell nanostructure with a single Ni nanocrystal inside a silicate nanoshell. It was revealed that the yolk@shell structure was developed by the mechanism combining different processes, including the formation of a (Ni0.1Mn0.9)O mixed-metal oxide and subsequent segregation of the reduced Ni. Furthermore, this study also devised a protocol to exploit the solid-state-synthesized powder for fabricating a colloidal hollow nanoreactor that can selectively catalyze the reduction of nitroarenes and be recycled via the magnetic process.


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