The nature of graphene surfaces as determined from the wettability studies of basal and edge planes
Küçük Resim Yok
Tarih
2015
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Electrochemical Society Inc.
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Effective exploitation of the electronic properties of graphene in aqueous medium has been limited due to lack of information about its wettability characteristics. In this paper, fundamental wettability studies of the face and edge planes of graphene were accomplished through contact angle measurements of the as-received and oxidized surfaces. Further, Raman spectroscopic studies were performed to analyze the effect of oxidation on the graphene surfaces based on the D and G bands. Atomic force microscopy (AFM) was used for surface force measurements to determine the iso-electric point (IEP) of the face and edge surface. The interaction of hydrophobic fullerene and hydrophilic fullerol nanoparticles on the graphene face and edge surfaces was studied through AFM imaging. The zeta potential measurements of the above mentioned carbon nanoparticles were also carried out to confirm that the interaction was due to hydrophobic or hydrophilic forces and not due to electrostatic interactions. In addition molecular dynamics and ab-initio simulations were also carried out to verify the interactions of the carbon nanoparticles with the graphite surfaces. © The Electrochemical Society.
Açıklama
Symposium on Graphene and Beyond: 2D Materials - 227th ECS Meeting -- 24 May 2015 through 28 May 2015 -- 112362
Anahtar Kelimeler
Atomic force microscopy, Contact angle, Electronic properties, Hydrophilicity, Hydrophobicity, Molecular dynamics, Nanoparticles, Spectroscopic analysis, Wetting, Ab initio simulations, Carbon Nano-Particles, Electronic properties of graphene, Iso-electric points, Raman spectroscopic study, Surface force measurement, Wettability characteristics, Zeta potential measurements, Graphene
Kaynak
ECS Transactions
WoS Q Değeri
Scopus Q Değeri
Q4
Cilt
66
Sayı
14
