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제114회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Crystal growth behavior changing Zn-doping in Rh : morphological evolution in a set of novel Rh concave structures

등록일
2014년 8월 28일 15시 31분 53초
접수번호
1101
발표코드
MAT.P-1118 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
10월 15일 (수요일) 16:00~19:00
발표형식
포스터
발표분야
재료화학
저자 및
공동저자
이기웅, 박종식, 이광렬*
고려대학교 화학과, Korea
Impurity doping has been extensively studied in materials science, because this methodology is particularly useful in the formation of shape controlled alloy nanoparticles for catalysis or optical applications. The successful formation of alloy nanoparticles, however, requires the synchronized decomposition of multiple precursors, and therefore the reduction potentials of precursors should allow the simultaneous decompositin of multiple precursors. Zinc has been rarely used as a dopant for the synthesis of noble metal alloy nanoparticles due to the difficulty in reduction. Although, we have strived to incorporate Zn atoms into Rh system, because such nanoparticle systems are expected to be metastable, prone to further structural transformations, potentially leading to novel nanostructures with useful material properties. Herein we report a simple synthetic strategy to incorporate Zn as a dopant into an alloy system and unusual role of dopant Zn in the structural evolution from 2D Rh nanoplate to 3D Rh concave nanotent, hierarchically stacked nanoframes, and hierarchical dendrites.

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