Synthesis conditions of Mg(OH) ₂ nanostructures by hydrothermal route

Abstract

Here, the synthesis conditions involved in the obtention of magnesium hydroxide [Mg(OH) 2 ] nanoparticles by hydrothermal route are studied. The aim is to control the characteristics of the products only by setting the correct reaction conditions. In addition, they have simplified the method by using simpler equipment in the synthesis and eliminating any further purification processes to obtain pure Mg(OH) 2 particles in a scalable, safe, and economic process. They present the role of the treatment temperature by means of differential scanning calorimetry, water/ magnesium oxide ratio, ageing time, and temperature increase rate and the characteristics of the resulting Mg(OH) 2 particles. Characterisation of the products was carried out by X-ray diffraction, dynamic light scattering, scanning electron microscopy, and transmission electron microscopy.

Enhanced Antibacterial Activity in Cellulose Acetate Films with Surface Defect-Rich MgO Nanoparticles for Sustainable Active Packaging Applications

“…45–0946) , (Figure A). Diffraction peaks at 38.18° and 58.88° were only found in the commercial MgO NPs, which corresponded to (101) and (102) planes in the hexagonal structure of Mg­(OH) 2 (Figure B) . A minimum impurity phase was found at 35.16° in both as-prepared and commercial NPs.…”

“…Diffraction peaks at 38.18°and 58.88°were only found in the commercial MgO NPs, which corresponded to (101) and (102) planes in the hexagonal structure of Mg(OH) 2 (Figure 2B). 38 A minimum impurity phase was found at 35.16°in both as-prepared and commercial NPs. Diffraction peaks of serial MgO NPs were all stronger with 6 h than with 3 h of hydrothermal reaction time, indicating higher crystallinity.…”

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

“…Magnesium hydroxide (MH) nanoparticles have been attracting much attention owing to extensive use in many fields like in catalysts support, sorbent for chemical and destructive adsorption of diverse pollutants, plastic rubber, wood pulp bleaching, neutralisation of acid wastewater, fertilizer additive, pharmacy, biomaterials, fire‐retardant materials because of their unique physical and chemical properties [1–4]. In recent years, MH nanostructures with various morphologies have been successfully synthesised by different approaches and by use of different preparation conditions such as chemical precipitation method [1], sol–gel [5], hydrothermal [6, 7], solvothermal [8], microwave [9] and ultrasound‐assisted synthesis [10–12]. Sonochemical synthesis organises a new and economical way for the synthesis of nanostructures without extra reagents and time‐consuming chemistry and compared with other methods, the sonochemical route does not require the use of high temperatures, and enables elimination of the problem of control of process parameters, such as pH and pressure [2].…”