Journal
APPLIED SURFACE SCIENCE
Volume 258, Issue 8, Pages 3703-3709Publisher
ELSEVIER
DOI: 10.1016/j.apsusc.2011.12.010
Keywords
Carbon; Nanosheets; Nanoparticles; Organosilica; Modification; ESR; Properties
Categories
Funding
- Operational Program Research and Development for Innovations - European Social Fund [CZ.1.05/2.1.00/03.0058]
- Academy of Sciences of the Czech Republic [KAN108040651, KAN115600801]
- Ministry of Education of the Czech Republic [1M0554, 1M6198959201]
- Greek State Scholarships Foundation
Ask authors/readers for more resources
Carbonaceous nanosheets decorated with amino-functionalized organosilica nanoparticles have been synthesized by a direct pyrolysis of betaine at 400 degrees C in air, followed by a simple surface treatment with ([3-(2-aminoethylamino) propyl] trimethoxysilane under reflux conditions. Both pristine and organosilica modified carbon nanosheets (OMCNs), were characterized by Fourier-transform infrared (FTIR), Raman, and electron paramagnetic resonance (EPR) spectroscopies, transmission electron microscopy and thermal analysis methods. The experimental data reveal a dramatic increase in the number of radical centers on the surface of the developed OMCN hybrid. The organosilica nanoparticles, ranging in size between 3 and 15 nm, are spherical and homogenously anchored on the surface of carbon nanosheets. The formation of C-O-Si bridges between carbon sheets and the organosilica nanoparticles has been supported by FTIR and EPR. These nanoparticles are bound to the nanosheet surface together with individual functional organosilane groups at a spacing of about 4 angstrom distance. The final hybrid is the complex nanosystem composed of 2D carbon nanosheets, spherical organosilica nanoparticles and immobilized amino organosilane molecules. (C) 2012 Elsevier B. V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available