Salt effects on the physical properties of magnetite nanoparticles synthesized at different NaCl concentrations

被引：18

作者：

Park, Ja Young ^{[1
]}

Patel, Daksha ^{[1
]}

Choi, Eun Sook ^{[1
]}

Baek, Myung Ju ^{[2
]}

Chang, Yongmin ^{[2
,3
]}

Kim, Tae Jeong ^{[2
,4
]}

Lee, Gang Ho ^{[1
,2
]}

机构：

[1] Kyungpook Natl Univ, Dept Chem, Coll Nat Sci, Taegu 702701, South Korea

[2] Kyungpook Natl Univ, Dept Nanosci & Nanotechnol, Taegu 702701, South Korea

[3] Kyungpook Natl Univ & Hosp, Dept Diagnost Radiol, Sch Med, Taegu 702701, South Korea

[4] Kyungpook Natl Univ, Dept Appl Chem, Coll Engn, Taegu 702701, South Korea

来源：

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 2010年 / 367卷 / 1-3期

关键词：

Fe3O4; Nanoparticle; Physical properties; Salt effect; Homogeneous nucleation model; LATTICE-PARAMETER; PARTICLES; STABILITY; TEMPERATURE; MORPHOLOGY; FE3O4; SIZE; IRON; ADSORPTION; NUCLEATION;

D O I：

10.1016/j.colsurfa.2010.06.014

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Magnetite nanoparticles were synthesized at a wide range of NaCl solutions (c = 0.01-3.0 M). The particle diameter (d) was reduced from 7.7 to 6.8 nm and the colloidal stability dropped with increasing c. The salt effect on the d was successfully elucidated with an aid of a homogeneous nucleation model. The saturation magnetization (M-s) reduction and the lattice contraction (Delta a) from -0.015 to -0.038 angstrom with increasing c were observed due to the decrease of the d. From the Delta a, the surface tension (gamma) enhancement from 0.192 to 0.614 N/m with increasing c was estimated. (C) 2010 Elsevier By. All rights reserved.

引用

页码：41 / 46

页数：6

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