Kinetics of magnetite nanoparticles formation in a one step low temperature hydrothermal process

被引：22
作者：
Ahmadi, Reza [1 ,2 ]
Masoudi, Afshin [1 ]
Hosseini, Hamid Reza Madaah [1 ]
Gu, Ning [3 ]
机构：
[1] Sharif Univ Technol, Dept Mat Sci & Engn, Tehran, Iran
[2] Univ Tehran Med Sci, RCMCI, Tehran, Iran
[3] Jiangsu Key Lab Biomat & Devices, Nanjing, Jiangsu, Peoples R China
来源：
CERAMICS INTERNATIONAL | 2013年 / 39卷 / 05期
关键词：
Magnetite; Hydrothermal; Avrami; IRON-OXIDE NANOPARTICLES; DECOMPOSITION; CYSTEINE;
D O I：
10.1016/j.ceramint.2012.11.097
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
In the present study, a one step hydrothermal process was employed to synthesize magnetite nanoparticles using oleic acid as surfactant agent at 140 degrees C. Effects of reaction time and alkalinity were studied on particles size and morphology. By changing these parameters, some monodisperse spherical nanoparticles with mean particle size between 2.71 and 13.88 nm were synthesized and characterized via TEM, XRD, VSM, TGA and FT-IR techniques. Assuming the Avrami behavior of particles formation, a kinetics equation was proposed for the transformation rate at 140 degrees C. Using some simplifying assumptions, nucleation and growth rates were calculated for the hydrothermal formation of magnetite nanoparticles at 140 degrees C. (C) 2012 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
引用
收藏
页码：4999 / 5005
页数：7
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