International. In a research paper, tetraethyl orthosilicate (TEOS) was used as an organosylane to decorate the surface of graphene oxide (GO) nanosheets with SiO2 nanospheres using an easy method.
Researchers from the Division of Nanotechnology and Advanced Materials, Materials and Energy Research Center in Karaj, Iran, delivered the results of X-ray diffraction analysis, Raman spectroscopy, Fourier transformed infrared spectroscopy, emission field scanning electron microscopy and atomic force microscopy, revealing that SiO2 nanospheres have covered the surface of GO sheets through a covalent bond and this is how SiO2-GO nanohybrids are successfully synthesized.
In addition, the effect of incorporating 0.1% by weight of GO nanohebrins and/or SiO2-GO Nanohybrids on the properties of epoxy coatings was investigated. The results show that the adhesion resistance of epoxy coatings to mild steel substrates and the angle of contact with water on coatings increase significantly through the addition of SiO2-GO nanohybrids.
Potentiodynamic polarization test, electrochemical impedance spectroscopy (EIS) and salt spray test results demonstrate that the corrosion protection performance of epoxy coatings is markedly improved by incorporating well-distributed SiO2-GO nanohybrids compared to GO nanosheets.
Source: www.sciencedirect.com
