Preparation of Aluminum Nanoparticles Using Bipolar Pulsed Electrical Discharge in Water

Abstract

Al nanoparticles were synthesized in liquid phase plasma using Al chloride as the precursor. CTAB was used as the surfactant to obtain well dispersed particles. When the surfactant was not added, large aggregated particles were generated. With increasing CTAB dosage, the size of the Al particles decreased and the degree of dispersion of the particles increased. At the initial stage of plasma discharge, dendrite shaped particles were produced. As discharge time evolved, however, particle size decreased and the particle morphology also changed into spherical shape. The solution pH decreased with increasing plasma discharge time.

Applications of Plasma-Liquid Systems: A Review

“…Although the capability of plasma-based nanomaterial processing has been confirmed by numerous studies [71,72,73,74,75], the synthesis of NPs with a defined shape is still very challenging and often not very reproducible. Therefore, a precise control over the synthesis rate and the NP morphology remains unattainable because the inevitable high voltage discharges at atmospheric pressure and the dynamic behavior of the plasma-liquid interface prevent the analysis of the precise plasma properties in the interfacial region [76].…”

“…For example, copper NPs have been produced using plasma electrochemical deposition in ionic liquids [98] and using a liquid phase bipolar pulsed plasma discharge in water [99]. The same bipolar pulsed discharge in water has also been used for the preparation of aluminum [73] and cobalt [100] NPs. A 2.45 GHz microwave-induced plasma in ethanol was also applied by Amaliyah et al [101] to reduce ZnO powder in an effort to effectively produce Zn NPs.…”