Synthesis of Cobalt Nanocrystals by High Temperature Solution Phase Reducing Method and Their Two-dimensional Ordered Superlattices

Abstract

Abstract: The monodisperse magnetic cobalt nanocrystals(NCs) of 7 nm in diameter were prepared by using high temperature solution phase reducing method. The UV-Vis spectrum showed that the cobalt NCs was stable. The structure of the cobalt NCs were determined by XRD. The results showed that each of the cobalt nanoparticles is a single crystal with a complex cubic structure relating to the β phase of manganese. The XPS spectra indicate that the surface of Co nanoparticles was not oxidized or formed other compound. Two-dimensional order superlattices of the Co nanoparticles were formed by self-assembly technique.

Key words: Cobalt nanocrystals, High temperature solution phase reduction method, Self-assembly, Superlattice

CLC Number:

O614
O643

TrendMD:

SU Yi-Kun, SHEN Cheng-Min, YANG Tian-Zhong, YANG Hai-Tao, GAO Hong-Jun, LI Hu-Lin . Synthesis of Cobalt Nanocrystals by High Temperature Solution Phase Reducing Method and Their Two-dimensional Ordered Superlattices[J]. Chem. J. Chinese Universities, 2004, 25(2): 227.

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Synthesis of Cobalt Nanocrystals by High Temperature Solution Phase Reducing Method and Their Two-dimensional Ordered Superlattices

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