Artículo
Simple fabrication of active electrodes using direct laser transference
Cavallo, Pablo César
; Coneo Rodriguez, Rusbel
; Broglia, Martin Federico
; Acevedo, Diego Fernando
; Barbero, César Alfredo
Fecha de publicación:
01/2014
Editorial:
Pergamon-Elsevier Science Ltd.
Revista:
Electrochimica Acta
ISSN:
0013-4686
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
Direct laser transference (DLT) method is applied to obtain electrodes modified with thin films of conducting polymers (CPs) or catalytic metals. A short (6–10 ns) pulse of laser light (second harmonic of Nd-YAG Laser, λ = 532 nm) is shined on the backside of a thin (<200 nm) film of the material to be transferred, which is deposited on a transparent substrate. The illuminated region heats up and the material (conducting polymer or metal) is thermally transferred to a solid target placed at short distance in air. In that ways, CPs are transferred onto polypropylene, glass, indium doped tin oxide (ITO), glassy carbon and gold films. In the same manner, electrocatalytic metals (platinum or gold) are transferred onto conductive substrates (glassy carbon or ITO films on glass). The films have been characterized by scanning electron microscopy, cyclic voltammetry, atomic force microscopy, UV-visible and Fourier Transform Infrared spectroscopies. The chemical, electrical and redox properties of the polymeric materials transferred remain unaltered after the transfer. Moreover, CP multilayers can be built applying DLT several times onto the same substrate. Besides polyaniline, it is shown that it is also possible to transfer functionalized polyanilines. The electrode modified with transferred Pt shows electrocatalytic activity toward methanol oxidation while ferricyanide shows a quasireversible behavior on electrodes modified with transferred Au. The method is simple and fast, works in air without complex environmental conditions and can produce active electrodes on different conductive materials. It only requires a pulsed high power Nd-YAG laser, which presently is available at low cost, and thin films on transparent substrata as source. In this way DLT seems to be a general and straightforward method to build technological devices based on CPs and/or electrocatalytic metals including electrodes for direct methanol fuel cells and sensors.
Archivos asociados
Licencia
Identificadores
Colecciones
Articulos(CCT - CORDOBA)
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - CORDOBA
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - CORDOBA
Citación
Acevedo, Diego Fernando; Cavallo, Pablo César; Broglia, Martin Federico; Barbero, César Alfredo; Coneo Rodriguez, Rusbel; Simple fabrication of active electrodes using direct laser transference; Pergamon-Elsevier Science Ltd.; Electrochimica Acta; 116; 1-2014; 194-202
Compartir
Altmétricas