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

제116회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Asymmetric Silica Encapsulation toward Colloidal Janus Nanoparticles: Concave Nanoreactor for Templating the Synthesis of Hollow Dendritic Pt Nanoshell

등록일
2015년 9월 3일 10시 26분 31초
접수번호
1182
발표코드
INOR.P-130 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
10월 15일 (목요일) 11:00~12:30
발표형식
포스터
발표분야
무기화학
저자 및
공동저자
김다운, 이인수1,*
포항공과대학교 화학과, Korea
1포항공과대학교(POSTECH) 화학과, Korea

The silica coating strategy has provided synthetic methodologies to render colloidal inorganic nanoparticles. Before this study, nanoparticles having concentric core-shell structure such as Au@SiO2, Ag@SiO2 and Fe3O4@SiO2 were synthesized. However recently, synthetic methodologies of colloidal asymmetric Janus nanoparticles have been suggested applying reverse microemulsion strategy using organosilane reagent with amine functional group. The Janus nanoparticles including Fe3O4 and Au asymmetrically silica deposited were found to leave a concave silica nanosphere with single Au nanoparticle inside the hole, Au@con-SiO2, in a continued reductive dissolution step. In particular, the Au@con-SiO2 nanoreactor was used as a template to synthesize Au@asy-SiO2, Pd@asy-SiO2 and Pt hollow dendritic nanoshell which has much potential usefulness as an electrocatalyst. The Pt hollow nanoshell was successfully isolated in a ligand-free system and exhibited enhanced electrocatalytic activities in oxygen reduction reaction (ORR).


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