Magnesium hydroxide nanoparticles synthesized in water-in-oil microemulsions.
Well-dispersed magnesium hydroxide nanoplatelets were synthesized by a simple water-in-oil (w/o) microemulsion process, blowing gaseous ammonia (NH(3)) into microemulsion zones solubilized by magnesium chloride solution (MgCl(2)). Typical quaternary microemulsions of Triton X-100/cyclohexane/n-hexanol/water were used as space-confining microreactors for the nucleation, growth, and crystallization of magnesium hydroxide nanoparticles. The obtained magnesium hydroxide was characterized by field-emission scanning electron microscopy (FESEM), high-resolution transmission election microscopy (HRTEM), X-ray powder diffraction (XRD), laser light scattering, Fourier transform infrared spectroscopy (FT-IR), and thermogravimetric analysis-differential scanning calorimetry (TGA-DSC). The mole ratio of water to surfactant (omega(0)) played an important role in the sizes of micelles and nanoparticles, increasing with the increase of omega(0). The compatibility and dispersibility of nanoparticles obtained from reverse micelles were improved in the organic phase.
Key Laboratory of Interface Science and Engineering in Advanced Materials of Taiyuan University of Technology, Ministry of Education, Taiyuan, Shanxi 030024, People's Republic of China.
Jianming
J
Wu
Hong
H
Yan
Xuehu
X
Zhang
Liqiao
L
Wei
Xuguang
X
Liu
Bingshe
B
Xu
D003510:Cyclohexanes; D004655:Emulsions / Q000737:chemistry*; D000441:Hexanols; D008276:Magnesium Hydroxide / Q000138:chemical synthesis*; D008823:Micelles; D049329:Nanostructures / Q000737:chemistry*; D017830:Octoxynol; D014867:Water
D003510:Cyclohexanes; D004655:Emulsions; D000441:Hexanols; D008823:Micelles; D014867:Water; C506365:Cyclohexane; D017830:Octoxynol; D008276:Magnesium Hydroxide