Obtaining Magnesium Nanoparticles by Receiving Flow Levitation

Abstract

Due to the development of the chemical industry, the need to obtain high-purity monodisperse nanoparticles is increasing. Therefore, it is necessary to choose the right method of obtaining. The paper demonstrates a unique method – induction flow levitation, which allows to obtain a large list of metal nanoparticles on one installation. In this work, magnesium nanoparticles were obtained using this method. The morphology was studied using scanning electron microscopy, where the resulting nanoparticles were clusters of primary particles. Energy dispersive analysis showed that the surface of magnesium nanoparticles after interaction with atmospheric air is completely covered with a small layer of oxide. Analysis of the phase composition showed that the powder consists of magnesium without traces of oxide. Mass spectrometry with inductively coupled plasma showed the purity of the obtained particles 99.99%. The characteristics of the porous structure were determined by low temperature porosimetry. The size of the obtained particles did not exceed 40 nm, and the average size was 23 nm. The used method of obtaining nanoparticles demonstrated high productivity (up to 50 g/h) and continuity of the process of obtaining nanoparticles (NP), the ability to control the size of the obtained nanoparticles (NP) in a wide range, non-contact heating, which leads to a high purity of the resulting product confirmed by mass spectrometry with inductive plasma bound.