Organic Functionalized Graphene Oxide Behavior in Water.
colloidal stability
critical coagulation concentration (CCC)
graphene oxide (GO)
organic functionalization
Journal
Nanomaterials (Basel, Switzerland)
ISSN: 2079-4991
Titre abrégé: Nanomaterials (Basel)
Pays: Switzerland
ID NLM: 101610216
Informations de publication
Date de publication:
24 Jun 2020
24 Jun 2020
Historique:
received:
01
06
2020
revised:
16
06
2020
accepted:
22
06
2020
entrez:
1
7
2020
pubmed:
1
7
2020
medline:
1
7
2020
Statut:
epublish
Résumé
Surface modified graphene oxide (GO) has received broad interest as a potential platform material for sensors, membranes, and sorbents, among other environmental applications. However, compared to parent (unmodified) GO, there is a dearth of information regarding the behavior of subsequently (secondary) modified GO, other than bulk natural organic matter (NOM) coating(s). Here, we systematically explore the critical role of organic functionalization with respect to GO stability in water. Specifically, we synthesized a matrix of GO-based materials considering a carefully chosen range of bound organic molecules (hydrophobic coatings: propylamine, tert-octylamine, and 1-adamantylamine; hydrophilic coatings: 3-amino-1-propanol and 3-amino-1-adamantanol), so that chemical structures and functional groups could be directly compared. GO (without organic functionalization) with varying oxidation extent(s) was also included for comparison. The material matrix was evaluated for aqueous stability by comparing critical coagulation concentration (CCC) as a function of varied ionic strength and type (NaCl, CaCl
Identifiants
pubmed: 32599799
pii: nano10061228
doi: 10.3390/nano10061228
pmc: PMC7353123
pii:
doi:
Types de publication
Journal Article
Langues
eng
Subventions
Organisme : National Science Foundation
ID : CBET 1437820
Organisme : U.S. Army Corps of Engineers
ID : W912HZ-13-2-0009-P00001
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