Electrodos modificados basados en materiales carbonosos y su uso en la reacción de evolución de hidrógeno
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Fecha
2021
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Profesor/a Guía
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es
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Universidad Andrés Bello
Nombre de Curso
Licencia CC
Licencia CC
Resumen
Los electro-catalizadores que constan de nanotubos de carbono de paredes múltiples (MWCNT),
líquido iónico (IL) hexafluorofosfato de N-octilpiridina (OPyPF6) como aglutinante, materiales
multifuncionales (MCM) y la introducción de complejos aza-macrocíclicos se utilizaron para el
estudio de desprendimiento de hidrógeno. En la búsqueda bibliográfica, todos los sistemas se
caracterizaron por ciclos de Voltamperometría que determinaron que son altamente
electrocatalíticos (E inicial = -0.30 V vs Ag / AgCl). Los electro-catalizadores se caracterizaron
mediante XRD, FESEM y RAMAN, confirmando la presencia de todos los componentes del
sistema en la superficie electródica y por cronoamperometría se confirmó que al utilizar IL son
estables. La eficiencia de los electrodos, determinado por la actividad electrocatalítica, se confirma
mediante la cuantificación por la cromatografía de gases del hidrógeno producido. Esta
investigación proporciona información relevante para emplear electro-catalizadores eficientes y de
bajo costo para reacciones electroquímicas.
Electro-catalysts consisting of multi-walled carbon nanotubes (MWCNT), ionic liquid (IL) N octylpyridine hexafluorophosphate (OPyPF6) as a binder, multifunctional materials (MCM) and the introduction of aza-macrocyclic complexes were used to study of hydrogen evolution. In the bibliographic search, all systems were characterized by voltammetry cycles that determined they are highly electrocatalytic (initial E = -0.30 V vs Ag / AgCl). The electro-catalysts were characterized using XRD, FESEM and RAMAN confirming presence of every component of this system on the electrode surface andby chronoamperometry it was confirmed they are stable when using IL. The efficiency of the electrodes determined by the electrocatalytic activity is confirmed by quantification by gas chromatography of the hydrogen produced. This research provides relevant information to use efficient and low-cost electro-catalysts for electrochemical reactions.
Electro-catalysts consisting of multi-walled carbon nanotubes (MWCNT), ionic liquid (IL) N octylpyridine hexafluorophosphate (OPyPF6) as a binder, multifunctional materials (MCM) and the introduction of aza-macrocyclic complexes were used to study of hydrogen evolution. In the bibliographic search, all systems were characterized by voltammetry cycles that determined they are highly electrocatalytic (initial E = -0.30 V vs Ag / AgCl). The electro-catalysts were characterized using XRD, FESEM and RAMAN confirming presence of every component of this system on the electrode surface andby chronoamperometry it was confirmed they are stable when using IL. The efficiency of the electrodes determined by the electrocatalytic activity is confirmed by quantification by gas chromatography of the hydrogen produced. This research provides relevant information to use efficient and low-cost electro-catalysts for electrochemical reactions.
Notas
Unidad de Investigación (Licenciado en Química)
Palabras clave
Electroquímica