Study on Preparation of Various Morphologies of ZnO Nanostructure through Wet Chemical Method | Chapter 9 | Recent Trends in Chemical and Material Sciences Vol.7

 Zinc oxide (ZnO) nanopowders are synthesised using a hydrothermal technique and a solution reaction method. The generated products had one of four possible morphologies depending on the precursors and preparation conditions: nanoparticle, microrod, nanoplate, or nanotube. In this paper, we present the results of our inquiry into the preparation of ZnO nanostructures using a template-free aqueous solution-based simple chemical approach. The precursor for ZnO nanostructures was zinc nitrate hexahydrate Zn(NO3)2.6H2O. A hydrothermal technique was used to make ZnO microrods and nanoplates utilising Zn(NO3)2 and KOH as reaction ingredients. A chemical reaction between Zn(NO3)2 and NH4OH produced ZnO nanotubes. ZnO nanoparticles were made from zinc nitrate and ammonium carbonate (NH4)2CO3 in aqueous solution using the precipitation method. X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and energy-dispersive X-ray spectroscopy were used to analyse the structures, morphology, and element components of these ZnO products manufactured using the aforementioned approaches (EDS). As-prepared ZnO nanoparticles have an average diameter of 30-60 nm; rod-like ZnO has an average diameter of about 350 nm and a length of 3.5 mm; plate-like ZnO has an average thickness of about 40 nm and a lateral size of 200'400 nm; and ZnO nanotubes have an outer diameter of about 400 nm and an inner diameter of about 300 nm and a length of about 4 mm According to the XRD data, all four morphologies of ZnO have a wurtzite structure. The wet chemical method is shown to be extremely promising for producing ZnO nanocrystallines with a variety of morphologies. Our research contributes to the field of ZnO nanostructures research, and it can be utilised to investigate possible applications in gas sensors, photocatalysts, SERS substrates, and optoelectronic devices.

Author(s) Details:

Nguyen Dac Dien,
Vietnam Trade Union University, 169 Tay Son Street, Dong Da District, Ha Noi City, Viet Nam.

Please see the link here: https://stm.bookpi.org/RTCAMS-V7/article/view/6102