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.

Production and stability of mechanochemically exfoliated graphene in water and culture media

PRATO, MAURIZIO;
2016

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.
NANOSCALE
http://pubs.rsc.org/en/Content/ArticleLanding/2016/NR/C6NR03246J#!divAbstract
File in questo prodotto:
File Dimensione Formato  
prato2016.pdf

non disponibili

Tipologia: Documento in Versione Editoriale
Licenza: Digital Rights Management non definito
Dimensione 2.35 MB
Formato Adobe PDF
2.35 MB Adobe PDF   Visualizza/Apri   Richiedi una copia
c6nr03246j1.pdf

non disponibili

Descrizione: Supporting information
Tipologia: Altro materiale allegato
Licenza: Digital Rights Management non definito
Dimensione 365.43 kB
Formato Adobe PDF
365.43 kB Adobe PDF   Visualizza/Apri   Richiedi una copia

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11368/2892442
Citazioni
  • ???jsp.display-item.citation.pmc??? 7
  • Scopus 40
  • ???jsp.display-item.citation.isi??? 40
social impact