TY - JOUR
T1 - Investigating the influence of surfactants on the stabilization of aqueous reduced graphene oxide dispersions and the characteristics of their composite films
AU - Fernández-Merino, M. J.
AU - Paredes, J. I.
AU - Villar-Rodil, S.
AU - Guardia, L.
AU - Solís-Fernández, P.
AU - Salinas-Torres, D.
AU - Cazorla-Amorós, D.
AU - Morallón, E.
AU - Martínez-Alonso, A.
AU - Tascón, J. M.D.
N1 - Funding Information:
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).
PY - 2012/8
Y1 - 2012/8
N2 - 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.
AB - 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.
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U2 - 10.1016/j.carbon.2011.10.039
DO - 10.1016/j.carbon.2011.10.039
M3 - Article
AN - SCOPUS:84860696734
SN - 0008-6223
VL - 50
SP - 3184
EP - 3194
JO - Carbon
JF - Carbon
IS - 9
ER -