Abstract
We examine the influence of the magnetic field on the chemical reaction of nitrogen and carbon dioxide in sparking electric discharge of zinc wires. Samples are prepared on Indium Tin Oxide (ITO) and quartz substrates in the form of thin films at 0 T, 0.2 T and 0.4 T. Different chemical composition of thin-films prepared by sparking discharge was obtained and verified by XPS, Raman and Cyclic voltammetry. Carbon dioxide conversion to carbonates was observed for zinc sparked in CO2 and nitrogen affecting crystallization of thin films was confirmed by XRD. Synthesis route for thin-film preparation used in this study is electric sparking discharge, convenient for fast ionization of metal and gasses. Band gap energy of thin films prepared by this method was starting from 2.81 eV and 4.24 eV, with the lowest band gaps prepared on ITO in 0.4 T. Differential Mobility Analysis (DMA) indicates smaller particles are fabricated by discharging zinc wires in a higher magnetic field. Nitridification of zinc nanoparticles occurred on 0.2 Tesla magnetic field strength and it was detectable even after XPS ion gun etching. Carbonation and nitridification of zinc thin films by sparking wires inside the magnetic field to observe the effect of the magnetic field on bandgap and chemical composition are confirmed by XPS.
Highlights
Scientific community regards separately magnetic field influence versus electric field on chemical reaction
Zinc wire sparked inside of 0 T with no gas flow energy applied across the gap; kV/A Average number particle size; nm concentration Geometric SD energy applied across the gap; kV/A Average number particle size; nm concentration Geometric SD energy applied across the gap; kV/A Average number particle size; nm concentration Geometric SD
To investigate nanoparticle distribution of aerosols created by sparking discharge and influence of magnetic field on median aerodynamic diameter we employed Differential Mobility Analyzer (DMA), measured at different applied voltage and with and without presence of magnetic field
Summary
Scientific community regards separately magnetic field influence versus electric field on chemical reaction. In our work sparking discharge method produce thin films inside magnetic field on different substrates, with focus on chemical reaction that is occurring in the region of zinc wire electrical discharge during breakdown voltage of gases (CO2 and N2) under magnetic field of permanent magnet that is not uniform. Such chemical reaction fabricates nanoparticles which morphology, crystallinity and chemistry depends on composition of carrier gas, magnetic field and type of substrate used for nanoparticles deposition
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