title: Production and stability of mechanochemically exfoliated graphene in water and culture media.
abstract: The preparation of graphene suspensions in water, without detergents or any other additives is achieved using freeze-dried graphene powders, produced by mechanochemical exfoliation of graphite. These powders of graphene can be safely stored or shipped, and promptly dissolved in aqueous media. The suspensions are relatively stable in terms of time, with a maximum loss of ∼25% of the initial concentration at 2 h. This work provides an easy and general access to aqueous graphene suspensions of chemically non-modified graphene samples, an otherwise (almost) impossible task to achieve by other means. A detailed study of the stability of the relative dispersions is also reported.
authors.affiliation: Organic Chemistry area, Faculty of Chemical Science and Technology - IRICA, University of Castilla-La Mancha, Avda. Camilo José Cela 10, 13071,, Ciudad Real, Spain. ester.vazquez@uclm.es.
authors.forename: V
authors.initials: V
authors.lastname: León
authors.forename: J M
authors.initials: JM
authors.lastname: González-Domínguez
authors.forename: J L G
authors.initials: JL
authors.lastname: Fierro
authors.forename: M
authors.initials: M
authors.lastname: Prato
authors.forename: E
authors.initials: E
authors.lastname: Vázquez