Molina Puerto, J.; Fernández Sáez, J.; Del Río García, AI.; Bonastre Cano, JA.; Cases Iborra, FJ. (2013). Chemical and electrochemical study of fabrics coated with reduced graphene oxide. Applied Surface Science. 279:46-54. https://doi.org/10.1016/j.apsusc.2013.04.020
Por favor, use este identificador para citar o enlazar este ítem: http://hdl.handle.net/10251/36552
Title:
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Chemical and electrochemical study of fabrics coated with reduced graphene oxide
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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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Polyester fabrics coated with reduced graphene oxide (RGO) have been obtained and later characterized by means of chemical and electrochemical techniques. X-ray photoelectron spectroscopy showed a decrease of the oxygen ...[+]
Polyester fabrics coated with reduced graphene oxide (RGO) have been obtained and later characterized by means of chemical and electrochemical techniques. X-ray photoelectron spectroscopy showed a decrease of the oxygen content as well as an increase of the sp2 fraction after chemical reduction of graphene oxide (GO). The electrical conductivity was measured by electrochemical impedance spectroscopy (EIS) and showed a decrease of 5 orders of magnitude in the resistance (¿) when GO was reduced to RGO. The phase angle also changed from 90° for PES-GO (capacitative behavior) to 0° for RGO coated fabrics (resistive behavior). In general an increase in the number of RGO layers produced an increase of the conductivity of the fabrics. EIS measurements in metal/sample/electrolyte configuration showed better electrocatalytic properties and faster diffusion rate for RGO specimens. Scanning electrochemical microscopy was employed to test the electroactivity of the different fabrics obtained. The sample coated with GO was not conductive since negative feedback was obtained. When GO was reduced to RGO the sample behaved like a conducting material since positive feedback was obtained. Approach curves indicated that the redox mediator had influence on the electrochemical response. The Fe(CN)63¿/4¿ redox mediator produced a higher electrochemical response than Ru(NH3)63+/2+ one.
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Subjects:
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Conducting fabrics
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Graphene
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Graphene oxide
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Polyester
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Scanning electrochemical microscopy
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Electrochemical impedance spectroscopy
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Copyrigths:
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Reserva de todos los derechos
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Source:
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Applied Surface Science. (issn:
0169-4332
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DOI:
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10.1016/j.apsusc.2013.04.020
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Publisher:
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Elsevier
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Publisher version:
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http://dx.doi.org/10.1016/j.apsusc.2013.04.020
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Project ID:
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info:eu-repo/grantAgreement/MICINN//CTM2011-23583/ES/DESARROLLO DE NUEVOS MATERIALES ELECTRODICOS BASADOS EN RECUBRIMIENTOS DE ICP Y PT, CON APLICACION EN EL TRATAMIENTO ELECTROQUIMICO DE AGUAS RESIDUALES TEXTILES/
info:eu-repo/grantAgreement/UPV//PAID-06-10-003-233/
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Thanks:
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Authors 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. ...[+]
Authors 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 (Generalitat Valenciana) for the FPI fellowship. A.I. del Rio is grateful to the Spanish Ministerio de Ciencia y Tecnologia for the FPI fellowship. J.C. Galvan is gratefully acknowledged for help with EIS measurements and data analysis.
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Type:
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Artículo
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