Synthesis and Evaluation of Some Triazole Derivatives as Corrosion Inhibitors and Biocides

Abd-Elaal, Ali A.; Aiad, Ismail; Shaban, Samy M.; Tawfik, Salah M.; Sayed, A S El

doi:10.1007/s11743-013-1547-0

Cited by 53 publications

(22 citation statements)

References 43 publications

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“…The polar head of the surfactant is functionalized with metal ions bound to and surrounded by a hydrophobic region, similar to the situation found in metalloproteinase [30]. Also, several workers have reported the used surfactants as antimicrobial agents [31][32][33][34]. In this work, two-membered cationic surfactants (C12Q and C16Q) and their Co(II), Sn(II) and Zn(II) complexes (C12QCo, C12QSn, C12QZn, C16QCo, C16QSn and C16QZn) were synthesized and evaluated for their potent action against different bacterial strains, including pathogenic bacteria, fungi and sulfate-reducing bacteria (SRB).…”

Section: Introductionmentioning

confidence: 93%

Synthesis, characterization and antimicrobial activity of N,N-bis(hydroxymethyl)-N-[(2-mercaptoacetoxy)methyl]alkyl ammonium bromide surfactant and their Co(II), Zn(II) and Sn(II) complexes

Tawfik

Zaky

2014

Res Chem Intermed

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Two-membered cationic surfactants namely: N,N-bis(hydroxymethyl)-N-[(2-mercaptoacetoxy)methyl)dodecane ammonium bromide (C12Q) and N,Nbis(hydroxymethyl)-N-[(2-mercaptoacetoxy)methyl]hexadecane ammonium bromide (C16Q) and their cobalt, tin and zinc complexes (C12QCo, C12QSn, C12QZn, C16QCo, C16QSn and C16QZn) were synthesized. The chemical structures of the synthesized compounds were confirmed using different spectroscopy tools. The surface activities of the synthesized surfactants were influenced by their chemical structures and the type of the transition metals. The synthesized cationic surfactants and their metal complexes were evaluated as biocides against Gram-positive bacteria (Bacillus subtilis and Micrococcus luteus), Gram-negative bacteria (Bordetella pertussis and Escherichia coli) and fungi (Candida albicans and Aspergillus niger), while the sulfate-reducing bacteria were tested against Desulfomonas pigra. The biological activity results showed that the cationic surfactants exhibit moderate to high efficiency against the tested microorganisms. The antimicrobial activity was strongly increased by complexation of these cationic surfactants with Co(II), Sn(II) and Zn(II) ions. The antimicrobial activity of the synthesized compounds against sulfate-reducing bacteria showed promising results in the field of biocides application.

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Section: Introductionmentioning

confidence: 93%

Synthesis, characterization and antimicrobial activity of N,N-bis(hydroxymethyl)-N-[(2-mercaptoacetoxy)methyl]alkyl ammonium bromide surfactant and their Co(II), Zn(II) and Sn(II) complexes

Tawfik

Zaky

2014

Res Chem Intermed

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“…Equation (12) showed that, -E a /R is the slope of the straight line (ln k vs. 1/T), so the value of E a could elucidate the effect of temperature on corrosion inhibition. E a increased with increase in the inhibitors concentration, which further confirms that efficiency decreases with increase in temperature.…”

Section: Activation Parametersmentioning

confidence: 99%

“…Very low biodegradation percentages found for gemini surfactants with dodecane spacer length can be explained by assuming that dicationic substances with a high number of carbons (12) between the nitrogen and hydrophobic tail (giving a large hydrophobic moiety) are non-biodegradable. The highest biodegradation percentages were found with gemini surfactants obtained from G-2 because of small hydrophobic character.…”

Section: Biodegradationmentioning

confidence: 99%

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Three gemini cationic surfactants as biodegradable corrosion inhibitors for carbon steel in HCl solution

2015

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Three gemini cationic surfactants with different hydrophobic spacer chain lengths were synthesized and characterized. The inhibition effect of N,on the corrosion of carbon steel in 1.0 M HCl solution at 25-60°C was studied by weight loss, potentiodynamic polarization, and electrochemical impedance spectroscopy. The results show that the synthesized inhibitors are effective inhibitors even at very low concentration, and the adsorption on the carbon steel surface obeys the Langmuir adsorption isotherm. Potentiodynamic polarization curves reveal that the synthesized inhibitors behave as a mixed-type inhibitor. Adsorption of used inhibitors led to a reduction in the double layer capacitance and an increase in the charge transfer resistance. Thermodynamic parameters have been obtained by adsorption theory. Surface activity and corrosion inhibition relationship were discussed. The biodegradability of the synthesized surfactants showed their readily biodegradation in the open environment and were considered as environmentally friendly corrosion inhibitors.

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“…These surfactants are characterized by their extreme tendency towards biodegradation, which means the degradation of organic compounds using microorganisms to produce compounds of low molecular weight, such as alcohols and short-chain fatty acids. The withdrawal of toxic and nonbiodegradable surfactants from commercial use and their replacement with green and biodegradable surfactants is highly necessary [18][19][20][21][22][23][24][25][26][27][28][29]. The aim of this study is to synthesize some non-ionic surfactants derived from vanillin (a natural compound) and to study their surface activity and biodegradability, and also to evaluate these compounds as corrosion inhibitors for carbon steel in 0.5-M hydrochloric acid (HCl).…”

Section: Introductionmentioning

confidence: 99%

Vanillin-derived non-ionic surfactants as green corrosion inhibitors for carbon steel in acidic environments

Tawfik

Negm

2015

Res Chem Intermed

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Four eco-friendly ('green') non-ionic surface active agents were synthesized via reaction of fatty acids obtained from hydrolysis of castor oil with vanillin. The products were then reacted with monoethanol amine to form a vanillin ester Schiff base. The vanillin ester Schiff base was ethoxylated using ethylene oxide gas in the presence of tri-ethyl amine as a catalyst to give the desired nonionic surfactants. The chemical structures of the obtained surfactants were characterized using FTIR and 1 HNMR spectroscopy. The inhibition effect of the four synthesized non-ionic surfactants derived from vanillin (VE15, VE20, VE40, and VE60) on the corrosion of carbon steel in acidic media of 0.5-M HCl was studied by weight loss, potentiodynamic and electrochemical impedance spectroscopy measurements. The results show that the synthesized inhibitors are effective inhibitors even at very low concentrations, and the adsorption on carbon steel surface obeys the Langmuir adsorption isotherm. Potentiodynamic polarization curves reveal that the synthesized inhibitors behave as mixed-type inhibitors. Adsorption of used inhibitors led to a reduction in the double layer capacitance and an increase in the charge transfer resistance. Calculated DG ads o values indicated that the mechanism by which these inhibitors adsorb onto carbon steel in 0.5-M HCl solution is chemical adsorption. The surface activities of the synthesized surfactants were determined using surface tension measurements. The biodegradability of these surfactants indicates that the compounds readily degrade in the environment and can be considered as green corrosion inhibitors.

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Synthesis and Evaluation of Some Triazole Derivatives as Corrosion Inhibitors and Biocides

Cited by 53 publications

References 43 publications

Synthesis, characterization and antimicrobial activity of N,N-bis(hydroxymethyl)-N-[(2-mercaptoacetoxy)methyl]alkyl ammonium bromide surfactant and their Co(II), Zn(II) and Sn(II) complexes

Synthesis, characterization and antimicrobial activity of N,N-bis(hydroxymethyl)-N-[(2-mercaptoacetoxy)methyl]alkyl ammonium bromide surfactant and their Co(II), Zn(II) and Sn(II) complexes

Three gemini cationic surfactants as biodegradable corrosion inhibitors for carbon steel in HCl solution

Vanillin-derived non-ionic surfactants as green corrosion inhibitors for carbon steel in acidic environments

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