Investigating the influence of surfactants on the stabilization of aqueous reduced graphene oxide dispersions and the characteristics of their composite films

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Title: Investigating the influence of surfactants on the stabilization of aqueous reduced graphene oxide dispersions and the characteristics of their composite films
Authors: Fernández Merino, María Jesús | Paredes Nachón, Juan Ignacio | Villar Rodil, Silvia | Guardia, Laura | Solís Fernández, Pablo | Salinas Torres, David | Cazorla-Amorós, Diego | Morallon, Emilia | Martínez Alonso, Amelia | Díez Tascón, Juan Manuel
Research Group/s: Electrocatálisis y Electroquímica de Polímeros
Center, Department or Service: Universidad de Alicante. Departamento de Química Física | Universidad de Alicante. Instituto Universitario de Materiales
Keywords: Grafenos | Surfactantes | Propiedades electroquímicas
Knowledge Area: Química Física
Issue Date: 28-Oct-2011
Publisher: Elsevier
Citation: FERNÁNDEZ-MERINO, M.J., et al. “Investigating the influence of surfactants on the stabilization of aqueous reduced graphene oxide dispersions and the characteristics of their composite films”. Carbon. Vol. 50, Issue 9 (Aug. 2012). ISSN 0008-6223, pp. 3184-3194
Abstract: The stabilization of reduced graphene oxide (RGO) sheets in aqueous dispersion using a wide range of surfactants of anionic, non-ionic and zwitterionic type has been investigated and compared under different conditions of pH, surfactant and RGO concentration, or sheet size. The observed differences in the performance of the surfactants were rationalized on the basis of their chemical structure (e.g., alkylic vs. aromatic hydrophobic tail or sulfonic vs. carboxylic polar head), thus providing a reference framework in the selection of appropriate surfactants for the processing of RGO suspensions towards particular purposes. RGO-surfactant composite paper-like films were also prepared through vacuum filtration of the corresponding mixed dispersions and their main characteristics were investigated. The composite paper-like films were also electrochemically characterized. Those prepared with two specific surfactants exhibited a high capacitance in relation to their surfactant-free counterpart.
Sponsor: Financial support from the Spanish MICINN (projects MAT2008-05700, MAT2010-15273 and MAT2011-26399) is gratefully acknowledged. M.J.F.-M. and D.S.-T. are indebted to MICINN for their pre-doctoral (FPI) grants. L.G. acknowledges CSIC for a post-doctoral contract (JAE-Doc).
ISSN: 0008-6223 (Print) | 1873-3891 (Online)
DOI: 10.1016/j.carbon.2011.10.039
Language: eng
Type: info:eu-repo/semantics/article
Peer Review: si
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Appears in Collections:INV - GEPE - Artículos de Revistas

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