%0 Journal Article
%T The Analysis and Growth Mechanism of Core/Shell-type Ni/MnO Nanoparticls<br>
%J 材料研究学报
%D 2008
%I 
%X Shell/core-type MnO-coated Ni nanoparticles was prepared by arc discharge method using micron-sized Ni and MnO2 powders as the raw materials, and the evaporating atmosphere was a mixture of hydrogen and argon. The morphology, structure and chemical composition of the as-prepared nanoparticles were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM) and thermal gravity analysis (TGA), respectively. It was showed that most of nanoparticles were in spherical shape in the range of 30-60 nm, with a shell of MnO phase and a core of Ni. The formation of nanoparticals was effectively explained by an extended mechanism of the Vapor-Liquid-Solid (VLS) with the existence of stoichiometric oxygen. The Ni core plays an essential catalyst in the formation of the core/shell structure.
%K core/shell structure
%K DC arc plasma method
%K Ni/MnO
%K growth mechanism<br>
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=84529CA2B2E519AC&jid=C101C4C04993B4D94FCD8446E6CBEB3B&aid=C34A876DED6D9BDE81A7B6BA206680EC&yid=67289AFF6305E306&vid=BC12EA701C895178&iid=38B194292C032A66&sid=6A73B36E85DB0CE9&eid=E2E0FBFE4D7EFB94&journal_id=1005-3093&journal_name=材料研究学报&referenced_num=0&reference_num=0