Molina Puerto, J.; Fernández Sáez, J.; Del Río García, AI.; Bonastre Cano, JA.; Cases Iborra, FJ. (2014). Synthesis of Pt nanoparticles on electrochemically reduced graphene oxide by potentiostatic and alternate current methods. Materials Characterization. 89:56-68. doi:10.1016/j.matchar.2014.01.003
Por favor, use este identificador para citar o enlazar este ítem: http://hdl.handle.net/10251/37717
Title:
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Synthesis of Pt nanoparticles on electrochemically reduced graphene oxide by potentiostatic and alternate current methods
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Author:
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Molina Puerto, Javier
Fernández Sáez, Javier
Del Río García, Ana Isabel
Bonastre Cano, José Antonio
Cases Iborra, Francisco Javier
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UPV Unit:
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Universitat Politècnica de València. Departamento de Ingeniería Textil y Papelera - Departament d'Enginyeria Tèxtil i Paperera
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Issued date:
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Abstract:
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Reduced graphene oxide (RGO) has been synthesized on Pt wires by means of a potentiodynamic method between +0.6 V and -1.4'V for 20 scans. Cyclic voltammetry characterization of the coatings showed the typical capacitative ...[+]
Reduced graphene oxide (RGO) has been synthesized on Pt wires by means of a potentiodynamic method between +0.6 V and -1.4'V for 20 scans. Cyclic voltammetry characterization of the coatings showed the typical capacitative behavior of graphene. Pt nanoparticles were synthesized on Pt-RGO electrodes by means of potentiostatic methods and a comparison between different synthesis potentials (-0.16, 0, +0.2 and +0.4 V) for the same synthesis charge (mC.cm(-2)) was established. The electrodes obtained were characterized in 0.5 M H2SO4 solution to observe the characteristic oxidation and reduction processes of the Pt surface. A 0.5 M H2SO4/0.5 M CH3OH solution was used to measure the catalytic properties of the deposits against methanol oxidation. The most appropriate potential to perform the synthesis was 0 V followed by -0.16 V and +0.2 V. The morphology of the coatings varied depending on the potential applied as observed by scanning electron microscopy. Alternate current methods were also used to synthesize Pt nanoparticles and compare the results with the traditional potentiostatic method. Different frequencies were used: 0.1, 1, 10, 100, 1000 and 10000 Hz. Alternate current synthesis is more efficient than traditional potentiostatic methods, obtaining more electroactive coatings with less effective synthesis time. (C) 2014 Elsevier Inc. All rights reserved.
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Subjects:
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Reduced graphene oxide
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Electrochemical reduction
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Platinum nanoparticles
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Alternate current methods
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Potentiostatic methods
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Copyrigths:
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Reserva de todos los derechos
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Source:
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Materials Characterization. (issn:
1044-5803
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DOI:
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10.1016/j.matchar.2014.01.003
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Publisher:
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Elsevier
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Project ID:
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Spanish Ministerio de Ciencia e Innovacion CTM2011-23583
Universitat Politecnica de Valencia PAID-06-10 003-233
Conselleria d'Educacio, Formacio i Ocupacio (Generalitat Valenciana) Programa VALi+D Postdoctoral Fellowship
Spanish Ministerio de Ciencia y Tecnología FPI fellowship
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Thanks:
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Authors wish to thank to the Spanish Ministerio de Ciencia e Innovacion (contract CTM2011-23583) and Universitat Politecnica de Valencia (Vicerrectorado de Investigacion PAID-06-10 contract 003-233) for the financial ...[+]
Authors wish to thank to the Spanish Ministerio de Ciencia e Innovacion (contract CTM2011-23583) and Universitat Politecnica de Valencia (Vicerrectorado de Investigacion PAID-06-10 contract 003-233) for the financial support. J. Molina is grateful to the Conselleria d'Educacio, Formacio i Ocupacio (Generalitat Valenciana) for the Programa VALi+D Postdoctoral Fellowship. A.I. del Rio is grateful to the Spanish Ministerio de Ciencia y Tecnologia for the FPI fellowship.
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Type:
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Artículo
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