超临界流体合成磁性六方纳米盘状的磁铁矿。

Supercritical fluid synthesis of magnetic hexagonal nanoplatelets of magnetite.

机构信息

Materials and Supercritical Fluids Group, Department of Chemistry, Tyndall National Institute, University College Cork, Lee Maltings, Prospect Row, Cork, Ireland.

出版信息

J Am Chem Soc. 2010 Sep 15;132(36):12540-1. doi: 10.1021/ja105079y.

DOI:10.1021/ja105079y

PMID:20718484

Abstract

A supercritical fluid technique was used to prepare hexagonal nanoplatelets of magnetite. Ferrocene was used as the Fe source, and sc-CO(2) acted as both a solvent and oxygen source in the process. Powder X-ray diffraction, transmission electron microscopy, X-ray photoelectron spectroscopy, and magnetic measurements were used to characterize the products. It was found that the morphology and structure of the product strongly depended on the reaction conditions.

摘要

采用超临界流体技术制备了六方纳米片状磁铁矿。二茂铁作为铁源，sc-CO2 在反应中既作为溶剂又作为氧源。采用粉末 X 射线衍射、透射电子显微镜、X 射线光电子能谱和磁测量对产物进行了表征。结果发现，产物的形貌和结构强烈依赖于反应条件。