A Simple Ball Milling and Thermal Oxidation Method for Synthesis of ZnO Nanowires Decorated with Cubic ZnO2 Nanoparticles

Abstract

In this work, we propose the synthesis of ZnO nanostructures through the thermal oxidation of ball-milled powders with the introduction of Mg and Sn doping species at the preliminary step of milling. We investigate the advantages and challenges of this two steps process for the production and fabrication of highly crystalline ZnO nanowires. This simple method allows us to fabricate ZnO nanowires with a higher quality core crystal at a much lower temperature and for a shorter processing time than the state-of-the-art, and decorated with by ZnO2 nanoparticles as determined via TEM analysis. The main findings will show that the crystalline core of the nanowires is of hexagonal ZnO while the nanoparticles on the surface are ZnO2 cubic type. Generally, the method proves to be suitable for applications that require a high surface-to-volume ratio, for example, catalysis phenomena, in which the presence of zinc oxides species can play an important role.

The chemical process for materials deposition in aqueous solution: a review

“…Observe that the used pH value is lower than the value of the crossing point of the Zn(OH) 3 – and the Zn(OH) 4 2– used for Zn(OH) 2 formation. At these conditions, the ZnO grows as well-defined nanowires on the substrate surface (Figure 20) [214]. Thinner and more intense XRD peaks were obtained from the ZnO nanowires.…”

ZnO Nanostructure Synthesized by Hydrothermal Method for Butane Gas Sensor

“…Different nanostructures have been synthesized for detecting some gases, i.e., acetone [5], ethanol [6], NH3 [7], LPG [8], and methanol [9]. All of the ZnO nanostructures were synthesized by thermal oxidation [10], thermal decomposition [11], co-precipitation method [12], liquid phase reaction [13], a self-template method [14], a solvothermal method [15], electrodeposition method [16], a microwave-assisted method [17] and many other methods. Among them, there was no report about using the hydrothermal method for the synthesis of ZnO nanostructure.…”