Adsorption and inhibitive properties of sildenafil (Viagra) for zinc in hydrochloric acid solution

Fouda, A. S.; Ibrahim, Hanan S.; Atef, Manal

doi:10.1016/j.rinp.2017.08.012

Cited by 9 publications

(3 citation statements)

References 38 publications

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“…Impedance spectra showed one time constant related to a single capacitive semi-circles, which indicated that the corrosion procedure was mostly controlled by charge transfer [32][33][34][35][36][37][38][39]. The obtained curves are very similar to each other, indicating that the mechanism of corrosion is not different after appending of BOD [40]. The diameter of Nyquist diagrams rises on rising of the BOD dose due to the creation of adsorbed layer of BOD on surface of P355 Cs.…”

Section: Resultsmentioning

confidence: 87%

BOD Composite as a New Eco-Friendly Corrosion Inhibitor

Eldesoky¹,

Attia²,

Ahmed³

et al. 2020

JMSE-B

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BOD composite, (E)-4-(2-(benzo[d]oxazol-2-yl) vinyl)-N,N-dimethylaniline is a new eco-friendly corrosion inhibitor versus P355 Carbon Steel (Cs). BOD was examined in 1.0 N HCl corrosive solution utilizing TP, EIS and EFM tests. EIS curves show that adsorption of BOD increases the transfer resistance and decrease the capacitance of interface metal/solution. Molecular docking was utilized to predict the binding between BOD composite with the receptor of 3tt8-hormone of crystal structure analysis of Cu Human Insulin Derivative. The morphology of inhibited P355 Cs was analyzed by checking electron magnifying instrument innovation with energy dispersive X-beam spectroscopy (SEM-EDX).

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Section: Resultsmentioning

confidence: 87%

BOD Composite as a New Eco-Friendly Corrosion Inhibitor

Eldesoky¹,

Attia²,

Ahmed³

et al. 2020

JMSE-B

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“…In the acid medium the drug molecules may be protonated or may be neutral. Physisorption mechanism is due to: In the acid medium the drug molecules are protonated so, there is difficult for these protonated molecules to adsorb on the positive MS surface [56]. Chloride ions get first adsorbed on MS surface, the MS surface becomes negatively charged, and then the protonated Esomeprazole Magnesium Trihydrate molecules get adsorbed on the chloride layer.…”

Section: Mechanism Of Corrosion Inhibitionmentioning

confidence: 99%

Esomeprazole Magnesium Trihydrate drug as a potential non-toxic corrosion inhibitor for mild steel in acidic media

El-Aziz¹,

Ibrahem²,

Awad³

2019

Zaštita materijala

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The inhibiting effect of Esomeprazole Magnesium Trihydrate drug on the corrosion of mild steel (MS) in 1 M HCl was performed by chemical tests (weight loss (WL)) and electrochemical methods (Tafel polarization (TP), electrochemical frequency modulation (EFM) and AC impedance spectroscopy (EIS)). The adsorption isotherm of Esomeprazole Magnesium Trihydrate drug on the MS surface was found to follow Temkin adsorption isotherm. Some thermodynamic parameters were computed and discussed. The obtained data showed that the inhibition efficiency (IE) rises with increasing the dose of the Esomeprazole Magnesium Trihydrate and with raising the temperature. The morphology of MS surface was analyzed by using scanning electron microscope (SEM), atomic force microscopy (AFM), and Fourier transforms infrared spectroscopy (FTIR) techniques. All test methods were in good agreement with each other.

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“…, max f is the frequency at the impedance is maximal and the factor n is an parameter adjustable that regularly lies among 0.50 and 1.0 [40] [41] [42]. The overall figure of the plots is very like for all samples (in existence and nonexistence of inhibitor at unlike immersion times) representing that no exchange in the corrosion mechanism [43].…”

Section: Pp Testsmentioning

confidence: 99%

Electrochemical and Surface Characterization Studies of 2-amino-6-methyl-5-oxo-4-phenyl-5,6-dihydro-4H-pyrano[3,2-c]quinoline-3-carbonitrile Compound on Copper in 2 M HNO<sub>3</sub>

Eldesoky¹,

Attia²,

Ahmed³

et al. 2019

MSCE

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The corrosion hindrance of Cu in 2.0 M HNO 3 solution by 2-amino-6-methyl-5-oxo-4-phenyl-5,6-dihydro-4H-pyrano[3,2-c]quinoline-3-carbonitrile compound has been studied, using Potentiodynamic Polarization (PP), AC Impedance (EIS), Electrochemical Frequency Modulation (EFM) techniques. Also, EIS test was utilized to confirm the corrosion protection mechanism. 2-amino-6-methyl-5-oxo-4-phenyl-5,6-dihydro-4H-pyrano[3,2-c]quinoline-3carbonitrile compound is suggested as a mixed kind inhibitor. SEM and EDX investigations of the Cu in 2.0 M HNO 3 surface revealed that assembles protect Cu from corrosion by adsorption on its surfaces by a forming coating film. Clearly, the assembled mechanisms play a role as a barrier to corrosive solution.

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Adsorption and inhibitive properties of sildenafil (Viagra) for zinc in hydrochloric acid solution

Cited by 9 publications

References 38 publications

BOD Composite as a New Eco-Friendly Corrosion Inhibitor

BOD Composite as a New Eco-Friendly Corrosion Inhibitor

Esomeprazole Magnesium Trihydrate drug as a potential non-toxic corrosion inhibitor for mild steel in acidic media

Electrochemical and Surface Characterization Studies of 2-amino-6-methyl-5-oxo-4-phenyl-5,6-dihydro-4H-pyrano[3,2-c]quinoline-3-carbonitrile Compound on Copper in 2 M HNO<sub>3</sub>

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Adsorption and inhibitive properties of sildenafil (Viagra) for zinc in hydrochloric acid solution

Cited by 9 publications

References 38 publications

BOD Composite as a New Eco-Friendly Corrosion Inhibitor

BOD Composite as a New Eco-Friendly Corrosion Inhibitor

Esomeprazole Magnesium Trihydrate drug as a potential non-toxic corrosion inhibitor for mild steel in acidic media

Electrochemical and Surface Characterization Studies of 2-amino-6-methyl-5-oxo-4-phenyl-5,6-dihydro-4H-pyrano[3,2-c]quinoline-3-carbonitrile Compound on Copper in 2 M HNO&lt;sub&gt;3&lt;/sub&gt;

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Electrochemical and Surface Characterization Studies of 2-amino-6-methyl-5-oxo-4-phenyl-5,6-dihydro-4H-pyrano[3,2-c]quinoline-3-carbonitrile Compound on Copper in 2 M HNO<sub>3</sub>