Chemical Precipitation Synthesis of Nano-Crystalline Mg(OH) 2
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Chemical Precipitation Synthesis of Nano-Crystalline Mg(OH)2 A. Medina1,4,*, L. Béjar2, G. Herrera-Pérez3
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UMSNH, Instituto de Investigaciones Metalúrgicas, Edificio U Ciudad Universitaria, C.P. 58040, Morelia, Michoacán, México 2 UMSNH, Facultad de Ingeniería Mecánica, Edificio W Ciudad Universitaria, C.P. 58040, Morelia, Michoacán, México 3 Departamento de Ingeniería en Materiales, Instituto Tecnológico Superior de Irapuato (ITESI) Carretera Irapuato-Silao Km. 12.5, El Copal, Irapuato, Guanajuato. C.P. 36821, México 4 SEP-DGEST-IT de Tlalnepantla, Av. Tecnológico s/n, Col. la Comunidad, Tlalnepantla de Baz, Edo México, 54070, México. * E-mail: [email protected]
ABSTRACT Magnesium hydroxide (Mg(OH)2) nanoparticles were synthesized by chemical precipitation synthesis method. The influence of the nano-sized Mg(OH)2 on the structural modification was evaluated. The formation of Mg(OH)2 crystals were evaluated by Fourier transform infrared spectroscopy (FTIR) and thermogravimetric analysis (TGA). The particle size and morphology of Mg(OH)2 was confirmed by high resolution transmission electron microscopy (HRTEM). The crystalline structure of nanoparticles was characterized by fast Fourier transform (FFT) and XRay diffraction (XRD), like analytical tools. Keywords: crystal growth, infrared (IR) spectroscopy, transmission electron microscopy (TEM), Self-assembly morphology. INTRODUCTION In recent years, much attention has been focused on the synthesis, characterization and applications in various science and engineering fields of materials with 1D nanostructure.The special attributes of nanomaterials arise due to their unique physical properties like electrical conductivity, optical band gap, magnetic properties and superior mechanical properties, because it exhibits many micro-electronics, optical, electronic, catalytic, nonlinear optical switching and magnetic properties which are different from both their ion and bulk materials [1-3]. The crucial point in obtaining nanosized materials is to prevent particles from aggregating [4,5]. Among various nanomaterials, magnesium hydroxide nanostructure has received a special interest for their attractive scientific and technological aspects in different fields. Magnesium hydroxide is used as halogen-free flame retardants for polymers, electric cables, building and decoration materials [6], preparing foodstuff starch esters [7] and treating wastewater [8]. With the emergence and the increase of microbial organisms, many researchers have been focusing on the new and effective antimicrobial reagent developments. Inorganic antibacterial agents received more and more recognition as antibacterial products [9,10]. Inorganic nanoparticles, whose structures exhibit novel physical, chemical and biological properties, have attracted much
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interest. Among the inorganic antibacterial agents, Mg(OH)2 is well known as an effective antibacterial agent [11]. Currently, the synthesis of Mg(OH)2 nanomaterials is being carried out by different techniques to achieve desired size and shape
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