Impact of electrical current on cluster nucleation production: Phase, structure, and nanosize for Al2O3

Abstract

The aluminum industry clearly stands out for its versatility and relevance to the development of an entire production chain that generates thousands of jobs. This metal is present in everyone's daily life because it is used in a variety of industries, including civil construction, the automotive industry, health care, and energy. Nano alumina products were prepared in two different phases with different sizes, and shapes via a solid–liquid plasma reactor. Both yields were prepared in identical circumstances, but with different effects of electrical current that result in different energetic cluster formations that lead to different formation shapes, sizes and phase structures (γ-Al2O3-NPs and δ-Al2O3-Nano-structure). In our best knowledge, the most recent research carried out to obtain Al2O3-Nps by arc discharge successfully produced different shapes or phases in each experiment: γ-δ-θ-α-Al2O3-Nps that’s why studying the parameters that affect the shape formation of Nano-Al2O3 is among our research interests. The binary yields produced were characterized to investigate their shape, size, purity, and morphology. Furthermore, γ-Al2O3-NPs had a spherical shape with a diameter of about 41.5 nm, as opposed to the rhomboid shape of 30 nm for δ-Al2O3-NanoStructure. Results showed that the electrical current plays a vital role in the size and crystal structure of the nanoparticles. Based on current production, the composition and formation mechanisms of nanoparticles are discussed. This research demonstrates an eco-friendly route for the rapid production of various Nano-alumina structures. The discrepancy between the energy used and the work function to remove electrons may be converted to heat energy in solution or may be a key factor in altering the crystal order of the generated ions to achieve a certain shape.