26 research outputs found
The origin of secondary heavy rare earth element enrichment in carbonatites: Constraints from the evolution of the Huanglongpu district, China
publisher: Elsevier articletitle: The origin of secondary heavy rare earth element enrichment in carbonatites: Constraints from the evolution of the Huanglongpu district, China journaltitle: Lithos articlelink: http://dx.doi.org/10.1016/j.lithos.2018.02.027 content_type: article copyright: © 2018 The Authors. Published by Elsevier B.V.Copyright: © 2018 Published by Elsevier B.V. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. The file attached is the Published/publisher’s pdf version of the articl
Monodisperse MPt (M = Fe, Co, Ni, Cu, Zn) Nanoparticles Prepared from a Facile Oleylamine Reduction of Metal Salts
We
report a simple, yet general, approach to monodisperse MPt (M = Fe,
Co, Ni, Cu, Zn) nanoparticles (NPs) by coreduction of MÂ(acac)<sub>2</sub> and PtÂ(acac)<sub>2</sub> (acac = acetylacetonate) with oleylamine
at 300 °C. In the current reaction condition, oleylamine serves
as the reducing agent, surfactant, and solvent. As an example, we
describe in details the synthesis of 9.5 nm CoPt NPs with their compositions
controlled from Co<sub>37</sub>Pt<sub>63</sub> to Co<sub>69</sub>Pt<sub>31</sub>. These NPs show composition-dependent structural and magnetic
properties. The unique oleylamine reduction process makes it possible
to prepare MPt NPs with their physical properties and surface chemistry
better rationalized for magnetic or catalytic applications
Monodisperse MPt (M = Fe, Co, Ni, Cu, Zn) Nanoparticles Prepared from a Facile Oleylamine Reduction of Metal Salts
We report a simple yet general approach to monodisperse MPt (M = Fe, Co, Ni, Cu, Zn) nanoparticles (NPs) by coreduction of M(acac)2 and Pt(acac)2 (acac = acetylacetonate) with oleylamine at 300°C. In the current reaction condition, oleylamine serves as the reducing agent, surfactant, and solvent. As an example, we describe in details the synthesis of 9.5 nm CoPt NPs with their compositions con-trolled from Co37Pt63 to Co69Pt31. These NPs show composition-dependent structural and magnetic properties. The unique oleylamine reduction process makes it possible to prepare MPt NPs with their physical properties and surface chemistry better rationalized for magnetic or catalytic applications