文献类型：期刊文献

英文题名：Controlled synthesis of magnetic spinel-type nickel ferrite nanoparticles by the interface reaction and hydrothermal crystallization

作者：Wang, Lei[1];Ren, Jiawen[1];Wang, Yangang[1];Liu, Xiaohui[1];Wang, Yanqin[1]

机构：[1]E China Univ Sci & Technol, Res Inst Ind Catalysis, Adv Mat Lab, Shanghai 200237, Peoples R China

年份：2010

卷号：490

期号：1-2

起止页码：656

外文期刊名：JOURNAL OF ALLOYS AND COMPOUNDS

收录：;EI(收录号：20100312640366);WOS:【SCI-EXPANDED(收录号:WOS:000274839100129)】；

基金：This project was supported financially by the National Basic Research Program of China (No. 2004CB719500), the New Century Excellent Talents in University (NCET-05-415), the National Natural Science Foundation of China (No. 20673037) and Commission of Science and Technology of Shanghai Municipality (08JC1407900), and China.

语种：英文

外文关键词：Nickel ferrite; Interface reaction; Hydrothermal crystallization; Superparamagnetism

摘要：Nearly mono-dispersed nickel ferrite nanoparticles have been synthesized by a solid-liquid interface reaction of Ni2+Fe23+-oleate complex with alkali solution assisted by hydrothermal crystallization. Chemical reactions took place at the interface of the solid and liquid phase and the generated particles were then dispersed into the aqueous solution through Brownian movement. The obtained samples were characterized by X-ray diffraction and transmission electron microscopy. It was indicated that the particle size and distribution were affected by solvents, type of alkali, hydrothermal temperature and time. By finely tuning the synthesis conditions, nearly mono-dispersed nanoparticles in the range of 5-12 nm could be readily prepared. The magnetism measurements showed that the nickel ferrite nanoparticles were superparamagnetism due to the nano-sized effect. (C) 2009 Elsevier B.V. All rights reserved.