Ultrasound-assisted synthesis of porous Mg(OH) 2 nanostructures using hypersaline brine

Micro & nano letters

article

Sadegh Yousefi¹  Behrooz Ghasemi¹ 

[1] Faculty of Metallurgy and Materials Science, Semnan University

关键词: precipitation (physical chemistry);    ultrasonic applications;    X-ray diffraction;    magnesium compounds;    particle size;    nanofabrication;    transmission electron microscopy;    differential thermal analysis;    X-ray chemical analysis;    field emission scanning electron microscopy;    nanoparticles;    nanoporous materials;    grain size;    field emission scanning electron microscopy;    transmission electron microscopy;    ultrasound waves;    particle sizes;    ultrasound-assisted synthesis;    hypersaline brine;    chemical precipitation;    sonochemical method;    thermal properties;    X-ray diffraction;    energy dispersive X-ray spectrometer;    Brunauer-Emmett-Teller technique;    thermogravimetry-differential thermal analysis;    grain sizes;    surface area;    particle size;    porous magnesium hydroxide nanostructures;    particle distribution;    transition temperature;    morpho-structural properties;    surface properties;    Mg(OH)2;   

DOI  :  10.1049/mnl.2019.0047

学科分类：计算机科学（综合）

来源: Wiley

【 摘 要 】

In this work, synthesis and formation of porous magnesium hydroxide (MH) nanostructures were investigated by chemical precipitation and sonochemical method using hypersaline brine containing large amounts of CaCl 2 , MgCl 2 , NaCl and KCl. The effect of ultrasound waves was investigated on the morpho-structural, surface and thermal properties were investigated by means of X-ray diffraction, field emission scanning electron microscopy, transmission electron microscopy, energy dispersive X-ray spectrometer, Brunauer–Emmett–Teller and thermogravimetry-differential thermal analysis techniques. It was indicated that ultrasound waves decreased grain and particle sizes of the sample which synthesised by sonochemical route (MH-U). The MH-U sample had a higher surface area, lower particle size, better particle distribution and lower transition temperature of MH to MgO.

【 授权许可】

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