Synthesis of colloidal dispersions of NiAl, ZnAl, NiCr, ZnCr, NiFe, and MgFe hydrotalcite-like nanoparticles

被引:41
作者
Bellezza, Francesca [1 ,2 ]
Nocchetti, Morena [1 ,2 ]
Posati, Tamara [1 ,2 ]
Giovagnoli, Stefano [3 ]
Cipiciani, Antonio [1 ,2 ]
机构
[1] Univ Perugia, Dipartimento Chim, I-06123 Perugia, Italy
[2] Univ Perugia, CEMIN, I-06123 Perugia, Italy
[3] Univ Perugia, Dipartimento Chim & Tecnol Farmaco, I-06123 Perugia, Italy
关键词
Hydrotalcite-like compounds; Microemulsion; Nanoparticles; Aqueous dispersions; Colloidal stability; LAYERED DOUBLE HYDROXIDES; TRANSPARENT; FILMS; SIZE; PRECURSORS; CATALYSTS; HYDROGEN; ANIONS;
D O I
10.1016/j.jcis.2012.02.034
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
Colloidal aqueous dispersions of nanometric NiAl, ZnAl, NiCr, ZnCr, NiFe, and MgFe hydrotalcite-like compounds were prepared in a water/cetyltrimethylammonium bromide/n-butanol/isooctane microemulsion. Particle sizes were analyzed with different techniques, and the results confirm dimensions between 10 and 30 nm, except for ZnAl-HTlc (150-200 nm). A good colloidal stability of HTlc-NPs aqueous dispersions, investigated with DLS and Pz measurements, was obtained without the need for any stabilizing agent. SEM images clearly showed that the obtained HTlc posses a high tendency to spontaneously form homogeneous and dense stacking of plate-like HTlc crystals directly from aqueous solution, giving rise to the developing of functional materials in optical, electrical and magnetic fields. (C) 2012 Elsevier Inc. All rights reserved.
引用
收藏
页码:20 / 27
页数:8
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