Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
595150 | Colloids and Surfaces A: Physicochemical and Engineering Aspects | 2010 | 6 Pages |
Abstract
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 (Ms) reduction and the lattice contraction (Δa) from −0.015 to −0.038 Å with increasing c were observed due to the decrease of the d. From the Δa, the surface tension (γ) enhancement from 0.192 to 0.614 N/m with increasing c was estimated.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Colloid and Surface Chemistry
Authors
Ja Young Park, Daksha Patel, Eun Sook Choi, Myung Ju Baek, Yongmin Chang, Tae Jeong Kim, Gang Ho Lee,