A facile interfacial reaction route to prepare magnetic hollow spheres with tunable shell thickness

被引：31

作者：

Cong, Yuanhua ^{[1
]}

Wang, Guanglin ^{[1
]}

Xiong, Menghua ^{[2
]}

Huang, Youju ^{[1
]}

Hong, Zhenfei ^{[2
]}

Wang, Daoliang ^{[1
]}

Li, Junjun ^{[1
]}

Li, Liangbin ^{[1
,2
]}

机构：

[1] Univ Sci & Technol China, Natl Synchrotron Radiat Lab, Hefei 230026, Peoples R China

[2] Univ Sci & Technol China, Dept Polymer Sci & Engn, Hefei 230026, Peoples R China

来源：

LANGMUIR | 2008年 / 24卷 / 13期

关键词：

D O I：

10.1021/la801124z

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Magnetic Fe3O4 hollow spheres were successfully synthesized with a water in oil in water (W/O/W) emulsion. During the facile procedure, no high pressure, high temperature, or other complex reaction conditions were required. Transmission electric microscope (TEM) images showed that all the hollow structural products have a good spherical morphology with an average diameter of 160 nm. The average size and the size distribution were further determined with dynamic light scattering (DLS), which reveals that the hollow nanospheres have a narrow size distribution. The average size from DLS was about 180 rim, which approximated that from TEM data. X-ray diffraction (XRD) demonstrates that the products were all Fe3O4 phase without any impurity. By increasing or decreasing the dosage of precipitate and precipitant sources, we controlled the shell thickness successfully in the tens of nanometers range. The formation mechanism of those hollow magnetic nanospheres was discussed by using the "reverse micelle transport" mechanism.

引用

页码：6624 / 6629

页数：6

共 48 条

[1] Metal supported on dendronized magnetic nanoparticles: Highly selective hydroformylation catalysts [J].

Abu-Reziq, R ;

Alper, H ;

Wang, DS ;

Post, ML .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2006, 128 (15) :5279-5282

[2] IONIC FERROFLUIDS - A CROSSING OF CHEMISTRY AND PHYSICS [J].

BACRI, JC ;

PERZYNSKI, R ;

SALIN, D ;

CABUIL, V ;

MASSART, R .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1990, 85 (1-3) :27-32

[3] Magnetic nanocomposite particles and hollow spheres constructed by a sequential layering approach [J].

Caruso, F ;

Spasova, M ;

Susha, A ;

Giersig, M ;

Caruso, RA .

CHEMISTRY OF MATERIALS, 2001, 13 (01) :109-116

[4] Nanoengineering of inorganic and hybrid hollow spheres by colloidal templating [J].

Caruso, F ;

Caruso, RA ;

Möhwald, H .

SCIENCE, 1998, 282 (5391) :1111-1114

[5] Structural and optical properties of uniform ZnO nanosheets [J].

Chen, SJ ;

Liu, YC ;

Shao, CL ;

Mu, R ;

Lu, YM ;

Zhang, JY ;

Shen, DZ ;

Fan, XW .

ADVANCED MATERIALS, 2005, 17 (05) :586-+

[6] Hollow magnetite spheres: Synthesis, characterization, and magnetic properties [J].

Chen, XY ;

Zhang, ZJ ;

Li, XX ;

Shi, CW .

CHEMICAL PHYSICS LETTERS, 2006, 422 (1-3) :294-298

[7] Transport of ions through the oil phase of W1/O/W2 double emulsions [J].

Cheng, Jing ;

Chen, Jian-Feng ;

Zhao, Min ;

Luo, Qing ;

Wen, Li-Xiong ;

Papadopoulos, Kyriakos D. .

JOURNAL OF COLLOID AND INTERFACE SCIENCE, 2007, 305 (01) :175-182

[8] Colloidal metal deposition onto functionalized polystyrene microspheres [J].

Dokoutchaev, A ;

James, JT ;

Koene, SC ;

Pathak, S ;

Prakash, GKS ;

Thompson, ME .

CHEMISTRY OF MATERIALS, 1999, 11 (09) :2389-2399

[9] Cancer nanotechnology: Opportunities and challenges [J].

Ferrari, M .

NATURE REVIEWS CANCER, 2005, 5 (03) :161-171

[10] Preparation and formation mechanism of silica microcapsules (hollow sphere) by water/oil/water interfacial reaction [J].

Fujiwara, M ;

Shiokawa, K ;

Tanaka, Y ;

Nakahara, Y .

CHEMISTRY OF MATERIALS, 2004, 16 (25) :5420-5426

← 1 2 3 4 5 →