Journal ArticleDOI
Investigating the effect of SiO2-graphene oxide hybrid as inorganic nanofiller on corrosion protection properties of epoxy coatings
TLDR
In this article, tetraethyl orthosilicate (TEOS) is used as organosilane to decorate the surface of graphene oxide (GO) nanosheets by SiO2 nanospheres via a facile method.Abstract:
In this research, tetraethyl orthosilicate (TEOS) is used as organosilane to decorate the surface of graphene oxide (GO) nanosheets by SiO2 nanospheres via a facile method. Results of X-ray diffraction analysis, Raman spectroscopy, Fourier transform infrared spectroscopy, field emission scanning electron microscopy, and atomic force microscopy reveal that SiO2 nanospheres have covered the surface of GO sheets through covalent bonding and SiO2-GO nanohybrids are successfully synthesized. Further, the effect of incorporating 0.1 wt% GO nanosheets and/or SiO2-GO nanohybrids on properties of epoxy coatings is investigated. The results show that the pull-off adhesion strength of epoxy coatings to mild steel substrates and the water contact angle on coatings significantly increase via adding SiO2-GO nanohybrids. The potentiodynamic polarization test, electrochemical impedance spectroscopy (EIS) and salt spray test results demonstrate that corrosion protection performance of epoxy coatings remarkably enhances by embedding well-distributed SiO2-GO nanohybrids compared to GO nanosheets.read more
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Excellent corrosion protection performance of epoxy composite coatings filled with amino-silane functionalized graphene oxide
TL;DR: In this paper, the effect of amino-silane modified graphene oxide (A-GO) on performance of nanocomposite coatings was investigated, and the results of electrochemical impedance spectroscopy showed that A-GO can provide superior corrosion protection performance and maximum corrosion resistance.
Journal ArticleDOI
Graphene-based polymer nanocomposites as barrier coatings for corrosion protection
Nurul Husna Othman,Mokhtar Che Ismail,Mazli Mustapha,Nabihah Sallih,Kok Eng Kee,Rafida Ahmad Jaal +5 more
TL;DR: In this article, the utilization of graphene and its derivatives in the formulation of various polymer matrices as barrier coatings was explored, and the advantages and limitations were also discussed to address the challenges for future research and potential applications of graphene-based polymer composites.
Journal ArticleDOI
Therapeutic and diagnostic potential of nanomaterials for enhanced biomedical applications.
M. Abd Elkodous,Gharieb S. El-Sayyad,Ibrahim Y. Abdelrahman,Hanan S. El-Bastawisy,Abd Elrahman Mohamed,Farag M. Mosallam,Hebatallah A. Nasser,Mohamed Gobara,Ahmad Baraka,Mohamed A. Elsayed,Ahmed I. El-Batal +10 more
TL;DR: This review presents, analyzes and provides significant insights and recent advances about the promising biomedical applications of nanoparticles including bioimaging of biological environments and its role as a significant tool for early detection of many diseases with respect to traditional means.
Journal ArticleDOI
Polymer/Inorganic nanocomposite coatings with superior corrosion protection performance: A review
Sepideh Pourhashem,Farhad Saba,Jizhou Duan,Alimorad Rashidi,Fang Guan,Elham Garmroudi Nezhad,Baorong Hou +6 more
TL;DR: In this paper, the effects of the above-mentioned nanomaterials on the corrosion protection performance of polymer coatings are discussed and a comprehensive review about recent studies on corrosion resistance of these nanocomposite coatings is provided.
Journal ArticleDOI
Adhesion and cohesion of epoxy-based industrial composite coatings
TL;DR: In this article, state-of-the-art of technical enhancements on epoxy-based coating systems, performed over the past few years, are summarized and analyzed in this work, considering the difference of failure modes, comparisons between the technical methods in terms of the effect in improvement, supporting mechanism, occasions of use, etc.
References
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Journal ArticleDOI
The chemistry of graphene oxide
TL;DR: This review will be of value to synthetic chemists interested in this emerging field of materials science, as well as those investigating applications of graphene who would find a more thorough treatment of the chemistry of graphene oxide useful in understanding the scope and limitations of current approaches which utilize this material.
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Determination of effective capacitance and film thickness from constant-phase-element parameters
Bryan Hirschorn,Mark E. Orazem,Bernard Tribollet,Vincent Vivier,Isabelle Frateur,Marco Musiani +5 more
TL;DR: Two different mathematical formulas for estimating effective capacitance from CPE parameters, taken from the literature, are associated unambiguously with either surface or normal time-constant distributions as mentioned in this paper.
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Technical Note: Concerning the Conversion of the Constant Phase Element Parameter Y0 into a Capacitance
C. H. Hsu,Florian Mansfeld +1 more
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Dispersion behaviour of graphene oxide and reduced graphene oxide
TL;DR: In this paper, the dispersion behavior of graphene oxide and chemically reduced graphene oxide (rGO) has been investigated in a wide range of organic solvents, taking into consideration the solvent polarity, the surface tension and the Hansen and Hildebrand solubility parameters.
Journal ArticleDOI
Covalent functionalization of chemically converted graphene sheets via silane and its reinforcement
Huafeng Yang,Fenghua Li,Changsheng Shan,Dongxue Han,Dongxue Han,Qixian Zhang,Li Niu,Li Niu,Ari Ivaska +8 more
TL;DR: Polydisperse, functionalized, chemically converted graphene (f-CCG) nanosheets, which can be homogeneously distributed into water, ethanol, DMF, DMSO and 3-aminopropyltriethoxysilane (APTS), were obtained via facile covalent functionalization with APTS.