Protection of carbon steel corrosion in 3.5% NaCl medium by aryldiazonium grafted graphene coatings

Yazdi, Ebrahim Ghiamati; Ghahfarokhi, Zahra Shams; Bagherzadeh, Mojtaba

doi:10.1039/c7nj01655g

Cited by 70 publications

(18 citation statements)

References 60 publications

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“…9 a, exhibit a diffusion tail in the low-frequency range and a depressed capacitive semicircle in the high-frequency range. The Nyquist plots' depressed capacitive semicircle is caused by the interfacial charge transfer response 65 , 66 . The mass transport mechanism is responsible for the diffusion tail.…”

Section: Resultsmentioning

confidence: 99%

Eco-friendly method for construction of superhydrophobic graphene-based coating on copper substrate and its corrosion resistance performance

Ragheb

Abdel‐Gaber

Mahgoub

et al. 2022

Sci Rep

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In this work, Ni and Ni-graphene, Ni-G, films were electrodeposited on copper substrate by potentiostatic deposition. To achieve superhydrophobicity, myristic acid, MA, was used to modify the surface of the electrodeposited coatings. The manufactured Ni film modified with myristic acid, Ni-MA, and the Ni-G film modified with myristic acid, Ni-G-MA, show excellent superhydrophobic, SHP, properties with a water contact angle of 159° and 162°, respectively. The surface morphology of the prepared SHP films was investigated using a Scanning Electron Microscope, and the results revealed micro-nano structures in both Ni-MA and Ni-G-MA films. The Fourier Transform Infrared Spectrophotometer data showed that the Ni-MA and Ni-G-MA films were successfully grafted on the copper metal. The Ni-G-MA film possessed higher chemical stability and mechanical abrasion resistance than Ni-MA. The Ni-MA and Ni-G-MA films exhibit long-term durability in the outdoor environment for more than four months. The potentiodynamic polarization and electrochemical impedance spectroscopy results demonstrated that the SHP films on the copper substrate exhibit remarkable corrosion resistance in 0.5 M NaCl.

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Section: Resultsmentioning

confidence: 99%

Eco-friendly method for construction of superhydrophobic graphene-based coating on copper substrate and its corrosion resistance performance

Ragheb

Abdel‐Gaber

Mahgoub

et al. 2022

Sci Rep

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show abstract

“…The anodic Tafel slope is somewhat larger than that of the cathodic one, and the corrosion potential is slightly displaced anodically, showing that this protective barrier acts mainly as an anodic inhibitor. Graphene layers are well known for the creation of adhered coatings on metal surfaces and affect the slope of anodic and cathodic reactions and hinder the corrosion reaction due to the large specific surface area and excellent mechanical properties [ 11 , 33 ]. These layers may hinder the diffusion of water molecules to the electrode surface [ 33 ].…”

Section: Resultsmentioning

confidence: 99%

“…Graphene is considered as one of the most important classes of modern materials-nanomaterials [ 8 ], which are extensively explored for use in different fields of science from drug delivery [ 9 ] to photovoltaics [ 10 ]; however, graphene remains almost unexplored towards applications aimed at the corrosion inhibition of materials. Only limited scientific research that uses graphene nanomaterials is devoted to corrosion studies [ 11 , 12 , 13 ], and to our knowledge there is no reported study on the use of carboxylated graphene oxide (GO-COOH) as a corrosion inhibitor. The production of nanomaterials is steadily increasing [ 14 , 15 ] using low-cost, abundant natural materials [ 16 ]; therefore, the future use of nanomaterials in corrosion protection is promising.…”

Section: Introductionmentioning

confidence: 99%

Experimental and Theoretical Studies on Corrosion Inhibition of Niobium and Tantalum Surfaces by Carboxylated Graphene Oxide

Mehmeti

Podvorica

2018

Materials

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The corrosion of two different metals, niobium and tantalum, in aqueous sulfuric acid solution has been studied in the presence and absence of carboxylated graphene oxide. Potentiodynamic measurements indicate that this nanomaterial inhibits corrosion due to its adsorption on the metal surfaces. The adsorbed layer of carboxylated graphene hinders two electrochemical reactions: the oxidation of the metal and the transport of metal ions from the metal to the solution but also hydrogen evolution reaction by acting as a protective barrier. The adsorption behavior at the molecular level of the carboxylated graphene oxide with respect to Nb, NbO, Ta, and TaO (111) surfaces is also investigated using Molecular Dynamic and Monte Carlo calculations.

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“…9 a, demonstrate a depressed capacitive semicircle, followed by a diffusion tail at low frequency. The depressed capacitive semicircle of the Nyquist plots at high frequencies is attributed to the interfacial charge transfer reaction 64 . The diffusion tail at low frequency is attributed to the diffusion process.…”

Section: Resultsmentioning

confidence: 98%

Fabrication of eco-friendly graphene-based superhydrophobic coating on steel substrate and its corrosion resistance, chemical and mechanical stability

Mohamed

Ezzat

Abdel‐Gaber

2022

Sci Rep

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Superhydrophobic coatings were successfully fabricated on steel substrates using potentiostatic electrodeposition of Ni and Ni-graphene, Ni-G, coatings followed by immersion in an ethanolic solution of stearic acid, SA. Rice straw, an environmentally friendly biomass resource, was used to synthesize high-quality graphene. The Raman spectra proved the high quality of the produced graphene. The Fourier transform infrared spectroscopy, FTIR, results showed that the Ni coating grafted with stearic acid, Ni-SA, and the Ni-G composite grafted with stearic acid, Ni-G-SA, were successfully deposited on the steel substrate. The scanning electron microscope, SEM, results showed that the prepared superhydrophobic coatings exhibit micro-nano structures. The wettability results revealed that the values of contact angles, CAs, for Ni-SA and Ni-G-SA coatings are 155.7° and 161.4°, while the values of sliding angles, SAs, for both coatings are 4.0° and 1.0°, respectively. The corrosion resistance, chemical stability, and mechanical abrasion resistance of the Ni-G-SA coating were found to be greater than those of the Ni-SA coating.

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Protection of carbon steel corrosion in 3.5% NaCl medium by aryldiazonium grafted graphene coatings

Abstract: Modification of CS/G by 1,8 ND containing two phenyl rings and two azo groups led to higher protection efficiency.

Cited by 70 publications

References 60 publications

Eco-friendly method for construction of superhydrophobic graphene-based coating on copper substrate and its corrosion resistance performance

Eco-friendly method for construction of superhydrophobic graphene-based coating on copper substrate and its corrosion resistance performance

Experimental and Theoretical Studies on Corrosion Inhibition of Niobium and Tantalum Surfaces by Carboxylated Graphene Oxide

Fabrication of eco-friendly graphene-based superhydrophobic coating on steel substrate and its corrosion resistance, chemical and mechanical stability

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