Preparation of nano-MgO using ultrasonic method and its characteristics

Abstract

MgO is an important inorganic material, which can be used in many aspects, such as catalyst, toxic-waste remediation agent, adsorbent, and others. In order to make use of MgO, nano-MgO was prepared by ultrasonic method using Mg (CH3COO)2.2H2O as precursor, NaOH aqueous solution as precipitant in this paper. Effect factors on MgO nano-particle size were investigated. Characteristics of samples were measured by TGA, XRD, TEM, and others techniques. The results showed that the size of nano-MgO about 4 nm could be obtained under the following conditions (ultrasonic time 20 min, ultrasonic power 250 W, titration rate of NaOH 0.25 mL/min, NaOH concentration 0.48 mol/L, calcinations temperature 410 °C, calcination time 1.5 h, heating rate of calcination 5 °C/min). It was a very simple and effective method to prepare nano-MgO.

Approaches to synthesize MgO nanostructures for diverse applications

“…The other advantage of ultrasound radiation is that, it yields smaller particles. The effects of ultrasonic radiation on chemical reactions are due to the very high temperatures and pressures that develop during the sono-chemical cavity collapse by acoustic cavitation [135,136,137]. Figure 5 shows a scheme that takes place during the formation of MgO nanoparticles under influence of ultrasonic irradiation [136].…”

Production of bioactive MgO nanoparticles via anodic technique

“…Many methods were used to form MgONps, Zhen et al prepared MgO by ultrasonic method [5]. Improved polyacrylamide gel technique was utilized to prepare MgO nanopowders [6].…”