The Library
Facile silane functionalization of graphene oxide
Tools
Tools
Tools
Abbas, Syeda, Rees, Gregory J., Kelly, Nicole L., Dancer, Claire E. J., Hanna, John V. and McNally, Tony (2018) Facile silane functionalization of graphene oxide. Nanoscale, 10 (34). 16231-16242 . doi:10.1039/C8NR04781B
|
PDF
WRAP-facile-silane-functionalization-graphene-oxide-Hanna-2018.pdf - Accepted Version - Requires a PDF viewer. Download (2991Kb) | Preview |
Official URL: http://dx.doi.org/10.1039/C8NR04781B
Abstract
The facile silane functionalization of graphene oxide (GO) was achieved yielding vinyltrimethoxysilane-reduced graphene oxide (VTMOS-rGO) nanospheres located in the inter-layer spacing between rGO sheets via an acid–base reaction using aqueous media. The successful grafting of the silane agent with pendant vinyl groups to rGO was confirmed by a combination of Fourier-transform infrared (FTIR), Raman spectroscopy, X-ray photoelectron spectroscopy (XPS) and X-ray diffraction (XRD). The structure and speciation of the silane-graphene network (nanosphere) and, the presence of free vinyl groups was verified from solid-state magic angle spinning (MAS) and solution 13C and 29Si nuclear magnetic resonance (NMR) measurements. Evidence from Scanning Electron Microscopy (SEM), High-Resolution Transmission Electron Microscopy (HRTEM) and TEM-High-Angle Annular Dark-Field (TEM-HAADF) imaging showed that these silane networks aided the exfoliation of the rGO layers preventing agglomeration, the interlayer spacing increased by 10 Å. The thermal stability (TGA/DTA) of VTMOS-rGO was significantly improved relative to GO, displaying just one degradation process for the silane network some 300 °C higher than either VTMOS or GO alone. The reduction of GO to VTMOS-rGO induced sp2 hybridization and enhanced the electrical conductivity of GO by 105 S m−1.
| Item Type: | Journal Article | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Subjects: | Q Science > QC Physics Q Science > QD Chemistry |
|||||||||
| Divisions: | Faculty of Science > Physics Faculty of Science > WMG (Formerly the Warwick Manufacturing Group) |
|||||||||
| Library of Congress Subject Headings (LCSH): | Graphene, Graphene -- Oxidation, Nanostructured materials, Silane compounds, Organosilicon compounds | |||||||||
| Journal or Publication Title: | Nanoscale | |||||||||
| Publisher: | Royal Society of Chemistry | |||||||||
| ISSN: | 2040-3364 | |||||||||
| Official Date: | 14 September 2018 | |||||||||
| Dates: |
|
|||||||||
| Volume: | 10 | |||||||||
| Number: | 34 | |||||||||
| Page Range: | 16231-16242 | |||||||||
| DOI: | 10.1039/C8NR04781B | |||||||||
| Status: | Peer Reviewed | |||||||||
| Publication Status: | Published | |||||||||
| Access rights to Published version: | Restricted or Subscription Access | |||||||||
| RIOXX Funder/Project Grant: |
|
Request changes or add full text files to a record
Repository staff actions (login required)
 |
View Item |
Downloads
Downloads per month over past year
