Graphene Oxide Coatings on Amino Acid Modified Fe Surfaces for Corrosion Inhibition

Yadav, Ankit; Kumar, Rajeev; Sahoo, Balaram

doi:10.1021/acsanm.0c00243

Cited by 54 publications

(23 citation statements)

References 88 publications

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“…The diluted GO solution was sonicated for 1 h at room temperature to ensure the homogeneous distribution of GO. Next, 0.500 g PABA was added to the 100 mL diluted GO solution, and the solution was maintained at 80°C for 4 h with a stir rate of 300 rpm (Yadav et al, 2020). Upon the completion of the reaction, the crude product was obtained by filtering.…”

Section: Synthesis Of Amidation 4-aminobenzoic Acid Functionalized Graphene Oxidementioning

confidence: 99%

Aminobenzoic acid functionalized graphene oxide as environment-friendly corrosion inhibitors for Q235 steel in HCl solution: experimental and DFT studies

Chen

Xie³

et al. 2021

ACMM

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Purpose The purpose of this study is to provide effective and environmental-friendly corrosion inhibitors derived from graphene oxide for Q235 steel. Design/methodology/approach Nontoxic and environment-friendly 4-aminobenzoic acid was used to functionalize graphene oxide via amidation and diazotization. The obtained amidation 4-aminobenzoic acid functionalized graphene oxide (PAGO) and diazotization 4-aminobenzoic acid functionalized graphene oxide (PDGO) were characterized by FTIR, Raman and TEM, while the inhibition efficiencies were analyzed by electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization (PDP). Furthermore, theoretical inhibition efficiencies were investigated by density functional theory (DFT) approach. Findings At a concentration of 40 ppm, the maximum inhibition efficiency of PAGO and PDGO were 97.90% and 96.72% in EIS measurement, respectively, which were in accordance with PDP data. Moreover, experimental results were supported by DFT-based quantum chemical calculation. Originality/value Environmental-friendly PAGO and PDGO were synthesized successfully. The synthetic inhibitors exhibited excellent inhibition efficiencies in EIS and PDP measurements. Furthermore, a computational study using DFT supported the trend that PAGO was better inhibitor than PDGO.

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Section: Synthesis Of Amidation 4-aminobenzoic Acid Functionalized Graphene Oxidementioning

confidence: 99%

Aminobenzoic acid functionalized graphene oxide as environment-friendly corrosion inhibitors for Q235 steel in HCl solution: experimental and DFT studies

Chen

Xie³

et al. 2021

ACMM

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show abstract

“…Additionally, Nafion resists chemical attacks and decreases the total corrosion rate. [30][31][32][33] The best protection efficiencies, obtained from potentiodynamic measurements, are as…”

Section: Potentiodynamic Polarization Techniquementioning

confidence: 99%

Corrosion mitigation of carbon steel in acidic and salty solutions using electrophoretically deposited graphene coatings

et al. 2020

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In the modern metal finishing industry, corrosion protection plays a critical role, with many coatings created to prevent this phenomenon (corrosion) and protect the metals. Nano-coating has of late been used to develop corrosion-resistant metal composites. Recently, layers of graphene-based materials with extraordinary properties have been successfully manufactured and applied through electrophoretic deposition (EPD). This article summarizes work altering the graphene oxide (GO) content, which was prepared using an adapted Hummers' method and then the simultaneous reduction of the GO suspension by the EPD method into graphene nano-coating on carbon steel. Different parameters were optimized, namely applied voltage, deposition time, and GO concentration. Scanning electron microscopy and Xray diffraction were used to characterize the coatings. The corrosion resistance of these coatings was measured by electrochemical polarization in aqueous solutions under accelerated corrosion conditions. The results show not only that EPD is a simple technique that allows creating a graphene coat on carbon steel from GO suspension, but also that it forms a graphene nano-coating which provides significant protection against corrosion of steel in acidic and salty solutions.

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“…Also, the micropores of CNTs are smaller than those of activated carbon. [4][5][6][7][8][9][10][11][12][13][14][15] These unique features of CNTs are exciting for the electrochemical reactions and they have shown significant impact on the charge transport between the electrode and electrolyte. However, the direct dispersion of CNTs in water is poor, thus requiring a new approach to enhance the dispersion in order to improve the performance of CNT-based materials.…”

Section: Introductionmentioning

confidence: 99%

Chemically Coupled Multiwall Carbon Nanotubes with Leaf-Like Nanostructures of NiO for Sensitive and Selective Determination of Uric Acid

Lal

Bhatti

Shahzad

et al. 2021

J. Electron. Mater.

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The chemical coupling of NiO nanostructures with thermally treated multiwall carbon nanotubes (MWCNTs) is not reported as it provides an enhanced dispersion of composite material in water. The dispersion of MWCNTs has been considered a big challenge. For this purpose, we first thermally treated MWCNTs at 1000°C in air for 30 min. Then, thermally treated MWCNTs were chemically coupled with NiO nanostructures by a hydrothermal method. The material characterization in terms of structure, morphology, and composition is well studied by different analytical techniques. The NiO composite (sample 2) with highest weight of MWCNTs had a leaf-like morphology and it exhibits a cubic phase of NiO. Cyclic voltammetry (CV) was used to study the electrochemical activity of prepared composite material towards the oxidation of uric acid in the phosphate buffer solution of pH 7.0. Sample 2 showed a well-behaved anodic peak with enhanced peak current and exhibited a linear range from 0.01 mM to 2.5 mM for uric acid with a low limit of detection 0.001mM. Sample 2 was found to be very selective under the environment of competing interferents such as urea, glucose, lactic acid and ethanol. This sample exhibits significant stability, thus it is a potential protocol for the monitoring of uric acid from real samples. This study provides a low-cost platform for the fabrication of efficient materials for various applications such as batteries, fuel cells and water splitting.

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Graphene Oxide Coatings on Amino Acid Modified Fe Surfaces for Corrosion Inhibition

Cited by 54 publications

References 88 publications

Aminobenzoic acid functionalized graphene oxide as environment-friendly corrosion inhibitors for Q235 steel in HCl solution: experimental and DFT studies

Aminobenzoic acid functionalized graphene oxide as environment-friendly corrosion inhibitors for Q235 steel in HCl solution: experimental and DFT studies

Corrosion mitigation of carbon steel in acidic and salty solutions using electrophoretically deposited graphene coatings

Chemically Coupled Multiwall Carbon Nanotubes with Leaf-Like Nanostructures of NiO for Sensitive and Selective Determination of Uric Acid

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