Synthesis, electrochemical and quantum chemical studies of some prepared surfactants based on azodye and Schiff base as corrosion inhibitors for steel in acid medium

Bedair, Mahmoud A.; El‐Sabbah, M. M. B.; Fouda, A. S.; Elaryian, Hani M.

doi:10.1016/j.corsci.2017.09.016

Cited by 192 publications

(81 citation statements)

References 51 publications

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“…Adsorption of organic inhibitor species at the C‐steel/solution interface consists of the modification of H 2 O molecules by inhibitor species based on the following process (Equation ):

{Inhibitor}_{(italicsol)} + {zH}_{2} O_{(italicads)} \to {Inhibitor}_{(italicads)} + {zH}_{2} O_{(italicsol)}

where z is the number of H 2 O molecules substituted by the inhibitor species, Inhibitor (ads) and Inhibitor (sol) are inhibitor species in the adsorbed on the steel surface and solution, respectively. Several adsorption isotherms including Freundlich, Bockris–Swinkels, Langmuir, Flory–Huggins and Temkin isotherms could be applied to fit the values of surface coverage ( θ ) at various concentrations in order to determine the adsorption behavior of the investigated inhibitors.…”

Section: Resultsmentioning

confidence: 99%

Sulfonated salicylidene thiadiazole complexes with Co (II) and Ni (II) ions as sustainable corrosion inhibitors and catalysts for cross coupling reaction

El‐Lateef

Sayed

Adam

2019

Applied Organom Chemis

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Condensation of 2,5-dihydrazinyl thiadiazole with 5-sodium sulfonate salicylaldehyde afforded dibasic tetradentate pincer N,O,O,N-salicyldiene thiadiazole ligand (H 2 Sanp). The novel dipolar ligand formed para-magnetic pincer complexes within Co (II) and Ni (II) ions (Co-Sanp and Ni-Sanp) under sustainable conditions. The water-soluble ligand and its metal-complexes were estimated by mass, IR and UV-Visible spectroscopy, EA (elemental analyses), TGA (Thermogravimetric analyses), magnetic susceptibility, and conductivity measurements. The catalytic reactivity of Co-Sanp and Ni-Sanp were evaluated in the Suzuki and Buchwald-Hartwig cross coupling reaction in aqueousmethanol binary mixtures. Both reactions of boronic acid or aryl amines with aryl halides gave high chemoselective yield of C-C or C-N product. The inhibition characteristics of H 2 Sanp and its Ni-and Co-complexes were performed for the C-steel corrosion in 1.0 M HCl using electrochemical measurements and surface analysis methods. These methods indicated that the synthesized compounds have served as efficient mixed-type corrosion inhibitors and their adsorption on the steel surface obeyed isotherm model of Langmuir. Co-Sanp inhibitor displays the best corrosion inhibition efficiency, and the capacity is up to 97.11% at of 250 mg L −1 . Surface analysis confirms formation of protective layer on the C-steel surface.

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“…Adsorption of organic inhibitor species at the C‐steel/solution interface consists of the modification of H 2 O molecules by inhibitor species based on the following process (Equation ):

{Inhibitor}_{(italicsol)} + {zH}_{2} O_{(italicads)} \to {Inhibitor}_{(italicads)} + {zH}_{2} O_{(italicsol)}

Section: Resultsmentioning

confidence: 99%

Sulfonated salicylidene thiadiazole complexes with Co (II) and Ni (II) ions as sustainable corrosion inhibitors and catalysts for cross coupling reaction

El‐Lateef

Sayed

Adam

2019

Applied Organom Chemis

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“…Among the various hetero-atom containing compounds, Schiff bases are quite effective because of the presence of a nitrogen atom, and several such compounds have been reported in the literature as potential corrosion inhibitors for metals and alloys in an acidic medium. [9][10][11][12][13] The growing popularity of Schiff bases as corrosion inhibitors is primarily based on their low toxicity and convenience of synthesis from very inexpensive starting materials. 14,15 Schiff bases are 1,16-21 wellknown for their potential for corrosion inhibition, and plentiful research on organic inhibitors has shown that Schiff bases have much greater inhibition efficiencies compared to the analogous aldehydes and amines.…”

Section: Introductionmentioning

confidence: 99%

Bis-Schiff bases of 2,2′-dibromobenzidine as efficient corrosion inhibitors for mild steel in acidic medium

et al. 2020

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“…The presence of imine bonds in the surfactant structure enhances their activity as corrosion inhibitors, especially at higher temperatures. Based on this, we prepared cationic surfactants with functional groups that provide increased electronic charge density (Bedair et al, ; Hegazy and Aiad, ). Studying the surfactant solution behavior is essential for evaluating the new surfactants.…”

Section: Introductionmentioning

confidence: 99%

The Tail Effect of Some Prepared Cationic Surfactants on Silver Nanoparticle Preparation and Their Surface, Thermodynamic Parameters, and Antimicrobial Activity

Shaban

Aiad

Yassin

et al. 2019

J Surfact & Detergents

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The surface parameters of some cationic surfactants having different hydrophobic alkyl chains were assessed in aqueous solution using different techniques; surface tension, ultraviolet‐Visible (UV–Vis) spectroscopy, and conductivity measurements. The obtained critical micelle concentration (CMC) for N‐(2‐((3,4‐dimethoxybenzylidene)amino)ethyl)‐N,N‐dimethyloctan‐1‐aminium bromide (DBAO), N‐(2‐((3,4‐dimethoxybenzylidene)amino)ethyl)‐N,N‐dimethyldodectan‐1‐aminium bromide (DBAD), and N‐(2‐((3,4‐dimethoxybenzylidene)amino)ethyl)‐N,N‐dimethylhexadectan‐1‐aminium bromide (DBAH) in aqueous solution using three techniques are nearly the same. Increasing the hydrophobic chain length enhances micelle formation. Raising the solution temperature from 25 to 65 °C also shows the same trend. The thermodynamic calculations outlined the adsorption propensity of the surfactants at the surface compared to their affinity to form micelles. Both micellization and adsorption processes are enhanced with both the hydrocarbon elongation and with raising the solution temperature. The effect of the surfactant tail on the preparation process of the silver nanoparticles (AgNP) was assessed and confirmed using transmission electron microscope (TEM), dynamic light scattering (DLS), and UV–Vis spectra. Increasing the surfactant tail leads to a smaller particle size with a narrow distribution. The stability of the prepared AgNP is enhanced with hydrophobic surfactant tail elongation as proved with increasing the zeta‐potential of the prepared AgNP colloid. The foaming power, interfacial tension, and emulsification stability of the DBAO, DBAD, and DBAH surfactants were determined. The DBAO, DBAD, and DBAH surfactants showed good antimicrobial activities against both bacteria (Gram positive and negative) and fungi, which have been enhanced because of incorporation of AgNP.

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Synthesis, electrochemical and quantum chemical studies of some prepared surfactants based on azodye and Schiff base as corrosion inhibitors for steel in acid medium

Cited by 192 publications

References 51 publications

Sulfonated salicylidene thiadiazole complexes with Co (II) and Ni (II) ions as sustainable corrosion inhibitors and catalysts for cross coupling reaction

Sulfonated salicylidene thiadiazole complexes with Co (II) and Ni (II) ions as sustainable corrosion inhibitors and catalysts for cross coupling reaction

Bis-Schiff bases of 2,2′-dibromobenzidine as efficient corrosion inhibitors for mild steel in acidic medium

The Tail Effect of Some Prepared Cationic Surfactants on Silver Nanoparticle Preparation and Their Surface, Thermodynamic Parameters, and Antimicrobial Activity

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