Se obtuvo una solución precursora del ZnO por el método sol-gel, después del envejecimiento de la misma se pulverizó este precursor sobre un sustrato para producir un recubrimiento delgado de ZnO; esta técnica se conoce como spray-gel. Se analizó la morfología de las películas delgadas con el Microscopio Electrónico de Barrido (MEB).

Se presenta el efecto de la radiación gamma de suspensiones coloidales de ZnO, preparados a partir de Zn(CH3COO)2.2H2O, LiOH.H2O y alcohol etílico, además de una variante a partir de Zn(CH3COO)2.2H2O, NaHO y alcohol propílico, estos coloides fueron irradiados con rayos gamma a 30, 50, 75 y 100 kGy y luego caracterizados por Microscopía Electrónica de Transmisión y Espectroscopía UV-Vis. Se fabricaron también películas de ZnO por spray-pirólisis a partir de los coloides irradiados, los que se caracterizaron por difracción de rayos X. Para evaluar las propiedades eléctricas se fabricaron películas de ZnO sobre substratos de alúmina impreso con electrodos de oro, sistema que sirvió como sensor de gas. El estudio de la dependencia de la conductividad con la temperatura en presencia de aire y un gas, revela que la conductividad eléctrica de los sensores varía en función de ...

Capacitive deionization (CDI) is an emerging water desalination technology whose principle lies in ion electrosorption at the surface of a pair of electrically charged electrodes. The aim of this study was to obtain the best performance of a CDI cell made of activated carbon as the active material for water desalination. In this work, electrodes of different active layer thicknesses were fabricated from a slurry of activated carbon deposited on graphite sheets. The as-prepared electrodes were characterized by cyclic voltammetry, and their physical properties were also studied using SEM and DRX. A CDI cell was fabricated with nine pairs of electrodes with the highest specific capacitance. The effect of the flow rate on the electrochemical performance of the CDI cell operating in charge–discharge electrochemical cycling was analyzed. We obtained a specific absorption capacity (SAC) of 10...

Capacitive deionization (CDI) is a promising and cost-effective technology that is currently being widely explored for removing dissolved ions from saline water. This research developed materials based on activated carbon (AC) materials modified with zinc oxide (ZnO) nanorods and used them as high-performance CDI electrodes for water desalination. The as-prepared electrodes were characterized by cyclic voltammetry, and their physical properties were studied through SEM and XRD. ZnO-coated AC electrodes revealed a better specific absorption capacity (SAC) and an average salt adsorption rate (ASAR) compared to pristine AC, specifically with values of 123.66 mg/g and 5.06 mg/g/min, respectively. The desalination process was conducted using a 0.4 M sodium chloride (NaCl) solution with flow rates from 45 mL/min to 105 mL/min under an applied potential of 1.2 V. Furthermore, the energy efficie...

Capacitive deionization (CDI) is a promising and cost-effective technology that is currently being widely explored for removing dissolved ions from saline water. This research developed materials based on activated carbon (AC) materials modified with zinc oxide (ZnO) nanorods and used them as high-performance CDI electrodes for water desalination. The as-prepared electrodes were characterized by cyclic voltammetry, and their physical properties were studied through SEM and XRD. ZnO-coated AC electrodes revealed a better specific absorption capacity (SAC) and an average salt adsorption rate (ASAR) compared to pristine AC, specifically with values of 123.66 mg/g and 5.06 mg/g/min, respectively. The desalination process was conducted using a 0.4 M sodium chloride (NaCl) solution with flow rates from 45 mL/min to 105 mL/min under an applied potential of 1.2 V. Furthermore, the energy efficie...