Silver is a well-known and largely studied electrocatalytic material for (hydro)dehalogenation reactions of organic halides, a class which includes several priority pollutants. Silver nanoparticles are particularly attractive since exhibit similar or even better performances than bulk silver allowing a significant reduction of precious metal loading. In this study the hydrodehalogenation of CHCl3 is selected as model reaction in order to evaluate the electrocatalytic activity of 2-15 nm silver nanoparticles. For the electrochemical characterization a versatile experimental setup was purportedly in-house designed and assembled that allows both cyclic voltammetry and electrolysis investigations. All the tests are performed in aqueous solution using a gas diffusion electrode as working cathode. The progressive conversion of gaseous trichloromethane to less chlorinated compounds is quantitatively evaluated in terms of concentration Cl- ions produced in the aqueous electrolyte solution.
Gas-phase volatile organic chloride electroreduction : a versatile experimental setup for electrolytic dechlorination and voltammetric analysis / O. Lugaresi, H. Encontre, C. Locatelli, A. Minguzzi, A. Vertova, S. Rondinini, C. Comninellis. - In: ELECTROCHEMISTRY COMMUNICATIONS. - ISSN 1388-2481. - 44(2014), pp. 63-65. [10.1016/j.elecom.2014.04.017]
Gas-phase volatile organic chloride electroreduction : a versatile experimental setup for electrolytic dechlorination and voltammetric analysis
C. Locatelli;A. Minguzzi;A. Vertova;S. Rondinini;
2014
Abstract
Silver is a well-known and largely studied electrocatalytic material for (hydro)dehalogenation reactions of organic halides, a class which includes several priority pollutants. Silver nanoparticles are particularly attractive since exhibit similar or even better performances than bulk silver allowing a significant reduction of precious metal loading. In this study the hydrodehalogenation of CHCl3 is selected as model reaction in order to evaluate the electrocatalytic activity of 2-15 nm silver nanoparticles. For the electrochemical characterization a versatile experimental setup was purportedly in-house designed and assembled that allows both cyclic voltammetry and electrolysis investigations. All the tests are performed in aqueous solution using a gas diffusion electrode as working cathode. The progressive conversion of gaseous trichloromethane to less chlorinated compounds is quantitatively evaluated in terms of concentration Cl- ions produced in the aqueous electrolyte solution.File | Dimensione | Formato | |
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