La utilización de las Descargas de Barrera de Dieléctrico, DBD, fue iniciada en Europa para la producción de ozono en el tratamiento de agua para el consumo humano. Desde entonces, el número de aplicaciones industriales de este tipo de descarga ha continuado aumentando. Actualmente las DBD son aplicadas con buenos resultados al control de la polución y tratamiento superficial de polímeros, con el fin de aumentar su facilidad de impresión y adhesión. La invención de la descarga luminiscente a presión atmosférica, basada en la DBD, ha impulsado trabajos teórico-experimentales para mejorar la comprensión de los mecanismos involucrados en ella. En este trabajo se realiza una descripción detallada del fenómeno DBD y se presenta la implementación de un sistema para el estudio del tratamiento con plasma de medios gaseosos. La funcionalidad del sistema desarrollado se verificó con aire, obteniéndose plasma visible a 12.31 kV y 27.2 kHz. Los resultados encontrados en la experimentación son consistentes con los reportados en la literatura.
Graphene oxide and reduced graphene have been exfoliated from graphite oxide synthesized by Hummer’s method. In order to establish a comparison, the exfoliation process was performed using two different methods, high energy ball milling and sonication. Each one was studied in two different media, organic solvent N-methyl 2 pyrrolidone and deionized water, obtaining four different products. The quality of the graphene and graphene oxides was studied using Raman spectroscopy. Structural characterization was performed using X-ray diffraction technique. The presence of oxygen-containing functional groups was determined by Fourier transform infrared spectra, while the morphology was investigated by scanning electron microscopy and energy-dispersive spectroscopy. The aim of this work is present a process to obtain graphene and graphene oxide of high quality at lower cost and better environmental conditions.
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