Adsorption of 4,4′-Dithiodipyridine Axially Coordinated to Iron(II) Phthalocyanine on Au(111) as a New Strategy for Oxygen Reduction Electrocatalysis

The coordination of PySSPy to FePc was monitored by UV/Vis spectroscopy while the adsobed FePc, anchored by PyS−Au(111), was examined by in situ STM in 0.1 M HClO4 and X-ray photoelectron spectroscopy (XPS). Rotating-disc-electrode (RDE) and linear-sweep-voltammetry (LSV) studies on the resulting Fe...

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Detalles Bibliográficos
Autores principales: Herrera, Santiago Esteban, Tasca, Federico, Williams, Federico José, Calvo, Ernesto Julio
Formato: Articulo
Lenguaje:Inglés
Publicado: 2018
Materias:
Química
Electrocatalysis
Oxygen reduction reaction
Phthalocyanines
Scanning tunnelling microscopy
X-ray spectroscopy
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/104500
http://hdl.handle.net/11336/89602
https://onlinelibrary.wiley.com/doi/abs/10.1002/cphc.201800139
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
Descripción
Sumario:The coordination of PySSPy to FePc was monitored by UV/Vis spectroscopy while the adsobed FePc, anchored by PyS−Au(111), was examined by in situ STM in 0.1 M HClO4 and X-ray photoelectron spectroscopy (XPS). Rotating-disc-electrode (RDE) and linear-sweep-voltammetry (LSV) studies on the resulting FePc-modified Au(111) electrodes in an oxygen-saturated 0.1 M NaOH electrolyte exhibit excellent electrocatalytic properties for the oxygen reduction reaction (ORR), with a smaller overpotential than that observed for Au(111) with FePc deposited by direct adsorption from a benzene solution.

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