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Vol. 4 No. 4 (2012)

Shell-driven Fine Structure Transition of Core Materials in Co@Au Core-shell Nanoparticles

https://doi.org/10.1007/BF03353720
Yujun Song
School of Materials Science and Engineering, Beihang University, Beijing 100191, China
Yinghui Wang
School of Materials Science and Engineering, Beihang University, Beijing 100191, China
Shaoxia Ji
School of Materials Science and Engineering, Beihang University, Beijing 100191, China
Jie Ding
School of Materials Science and Engineering, Beihang University, Beijing 100191, China

Corresponding Author: Yujun Song

songyj@buaa.edu.cn

Nano-Micro Letters, Vol. 4 No. 4 (2012), Article Number: 235-242

Abstract

Co@Au core shell nanoparticles (NPs) of different shell thicknesses were fabricated by a combination of the displacement process and the reduction-deposition process in a microfluidic reactor. The effect of the shell thickness on the fine structures (local atom arrangement) of core materials was investigated by X-ray Absorption Near Edge Structure (XANES) and Extended X-ray Absorption Fine Structure (EXAFS). The results indicate that the shell thickness affects the fine structure of the core materials by causing atomic re-arrangement between the hexagonal close pack (hcp) and the face centered cubic (fcc) structure, and forming Co-Au bonds in the core-shell interface.

Keywords

Nanoparticle Core-shell Fine Structure Microfluidic
Song, Yujun, Yinghui Wang, Shaoxia Ji, and Jie Ding. 2012. “Shell-Driven Fine Structure Transition of Core Materials in Co@Au Core-Shell Nanoparticles”. Nano-Micro Letters 4 (4):235-42. https://doi.org/10.1007/BF03353720.
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