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114th General Meeting of Korean Chemical Society Unusual Rh nanocrystal growth control by space-confined heteroepitaxial growth on twinning boundary

Submission Date :
8 / 28 / 2014 , 15 : 28 : 13
Abstract Number :
Presenting Type:
Poster Presentation
Presenting Area :
Authors :
안효현, 이광렬*
고려대학교 화학과, Korea
Assigned Code :
MAT.P-1117 Assigend Code Guideline
Presenting Time :
10월 15일 (수요일) 16:00~19:00
While nanocrystal growth is influenced by various reaction parameters, the atom packing motif of a pre-existing substrate, where a new phase can grow, is one of the strongest structure determining factor. Various nanocrystalline substrates have been employed for a heteroepitaxial growth, but little is known for the heteroepitaxial growth pattern on laterally crowded twinning boundaries. In this case, the surfactant-surfactant interaction between newly growing neighboring nanocrystallites would also play an important role in addition to the structure determining effect of the crystal packing motif of the nanosubstrate. We have recently reported the synthesis of coaxial Au@Pt nanowires with numerous adjacently placed twinning boundaries, and therefore the nanowires seem to provide the ideal opportunity for studying above mentioned issue. Herein, we report the successful dimension controlled vertical growth of Rh nanorods and nanoplates on a Au@Pt nanowire, which are not obtained in the absence of the Au@Pt nanowire substrate.