Effect of Surfactants on Modifying the Surface of Magnetic Nanoparticles by Thermal Decomposition

The nanosize magnetic particles were synthesized by thermal decomposition method with size distribution in the range of 10 ~ 30 nm. Different category and quantity of surfactants were used modifying the surface of the synthesized nanoparticles to control the particles’ shape and size. Multi-shapes, such as uniformity cubic, mixture of spherical and cubic, and the similar chick footmarks, were acquired in our experiment by different surfactants. It indicates the surfactant is a key factor for the size and shape of particles. The surfactants of PVP and oleylamine made the particle shape be uniformity cubic; However, the particle partly behaved as spherical shape in the case of using PVP and oleic acid as surfactants.

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The influence of reaction temperatures and volume of oleic acid to synthesis SnS nanocrystals by using thermal decomposition method

Thin Solid Films ◽

10.1016/j.tsf.2013.08.097 ◽

2013 ◽

Vol 549 ◽

pp. 159-164 ◽

Cited By ~ 9

Author(s):

Betty Yan Jin Liang ◽

Yu-Min Shen ◽

Sheng-Chang Wang ◽

Jow-Lay Huang

Keyword(s):

Thermal Decomposition ◽

Oleic Acid ◽

Decomposition Method ◽

Thermal Decomposition Method

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Mechanical-assisted preparation and photocatalytic properties of almost-visible light-driven ZnO/ZnFe2O4 nanocomposites

MRS Proceedings ◽

10.1557/opl.2014.329 ◽

2014 ◽

Vol 1641 ◽

Cited By ~ 2

Author(s):

Jiaqian Qin ◽

Yanan Xue ◽

Xinyu Zhang ◽

Riping Liu

Keyword(s):

Thermal Decomposition ◽

Methylene Blue ◽

Photocatalytic Activity ◽

Visible Light ◽

Aqueous Medium ◽

Decomposition Method ◽

Low Cost ◽

Thermal Decomposition Method ◽

Visible Light Driven ◽

Shape And Size

ABSTRACTZnO and ZnO/ZnFe2O4 nanocomposites were synthesized by mechanical-assisted thermal decomposition method. The results show that this method is a simple and low cost method to prepare ZnO and ZnO/ ZnFe2O4 nanocomposites. The nanorod's shape and size have been identified through SEM and TEM. The photocatalytic activity of ZnO and ZnO/ZnFe2O4 nanocomposites were tested by the degradation of methylene blue (MB) in aqueous medium under almost-visible light and the efficiency of the catalyst has been discussed in detail.

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Synthesis of MnxGa1−xFe2O4 magnetic nanoparticles by thermal decomposition method for medical diagnosis applications

Journal of Magnetism and Magnetic Materials ◽

10.1016/j.jmmm.2016.10.098 ◽

2017 ◽

Vol 427 ◽

pp. 272-275 ◽

Cited By ~ 2

Author(s):

Javier Sánchez ◽

Dora Alicia Cortés-Hernández ◽

José Concepción Escobedo-Bocardo ◽

José Manuel Almanza-Robles ◽

Pamela Yajaira Reyes-Rodríguez ◽

...

Keyword(s):

Thermal Decomposition ◽

Magnetic Nanoparticles ◽

Medical Diagnosis ◽

Decomposition Method ◽

Thermal Decomposition Method

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A magnetic super lattice

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100126597 ◽

1987 ◽

Vol 45 ◽

pp. 360-361 ◽

Cited By ~ 1

Author(s):

M.D. Bentzon ◽

J. v. Wonterghem ◽

A. Thölén

Keyword(s):

Thermal Decomposition ◽

Oleic Acid ◽

Magnetic Fluid ◽

Magnetic Particles ◽

Carbon Film ◽

Thick Layer ◽

Amorphous Iron ◽

Super Lattice ◽

Carrier Liquid ◽

Median Diameter

We report on the oxidation of a magnetic fluid. The oxidation results in magnetic super lattice crystals. The “atoms” are hematite (α-Fe2O3) particles with a diameter ø = 6.9 nm and they are covered with a 1-2 nm thick layer of surfactant molecules.Magnetic fluids are homogeneous suspensions of small magnetic particles in a carrier liquid. To prevent agglomeration, the particles are coated with surfactant molecules. The magnetic fluid studied in this work was produced by thermal decomposition of Fe(CO)5 in Declin (carrier liquid) in the presence of oleic acid (surfactant). The magnetic particles consist of an amorphous iron-carbon alloy. For TEM investigation a droplet of the fluid was added to benzine and a carbon film on a copper net was immersed. When exposed to air the sample starts burning. The oxidation and electron irradiation transform the magnetic particles into hematite (α-Fe2O3) particles with a median diameter ø = 6.9 nm.

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