Azo ligand as new corrosion inhibitor for copper metal: Spectral, thermal studies and electrical conductivity of its novel transition metal complexes

Mandour, Howida S.; Abouel‐Enein, Saeyda A.; Morsi, Morsi M.; Khorshed, Lobna A.

doi:10.1016/j.molstruc.2020.129159

Cited by 16 publications

(5 citation statements)

References 73 publications

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“…This behaviour might be explained by the proton conduction provided by water molecules. [47] The influence of solution pH on the removal of Cu 2+ , Fe 2+ , and Pb 2+ was studied between pH 3.00 and 12.00 as found in the literature. [40,48] When the acidic pH neared neutrality, the chitosan membrane's adsorption capacity dropped, as did the % removal of Cu 2+ , Fe 2+ , and Pb 2+ .…”

Section: Inorganic Composition Of the Oil Usedmentioning

confidence: 99%

Modification of chitosan with cellulose and gelatin for the removal of Cu²⁺, Fe²⁺, and Pb²⁺ from oily wastewater

et al. 2023

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In this study, chitosan was modified with cellulose and gelatin for the removal of Cu2+, Fe2+, and Pb2+ from oily wastewater. Chitosan was characterized using Fourier‐transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and X‐ray diffraction (XRD). Carbon (77.54%), hydrogen (10.30%), oxygen (8.89%), nitrogen (2.74%), and sulphur (0.53%) were found in the organic constitution of the oil utilized, according to elemental analysis. Despite the presence of other metal ions in the used oil and effluent, this study focused solely on Cu2+, Fe2+, and Pb2+. Studies on the removal of Cu2+, Fe2+, and Pb2+ from oily wastewater were conducted, and multiple effect factors such as temperature and pH, time and pH, solvent and pH, temperature and time, temperature and solvent, and time and solvent were evaluated. An adsorption study was performed to remove the heavy metals. The results revealed that the highest percentage removal of Cu2+ was 96.62 (pH = 7.52 and conductivity = −12 mV), of Fe2+ was 97.95 (pH = 6.30 and conductivity = +68 mV), and of Pb2+ was 98.86 (pH = 10.58 and conductivity = −170 mV). To analyze the impacts of experimental factors, experiments were developed using central composite design (CCD) based on response surface methodology (RSM).

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Section: Inorganic Composition Of the Oil Usedmentioning

confidence: 99%

Modification of chitosan with cellulose and gelatin for the removal of Cu²⁺, Fe²⁺, and Pb²⁺ from oily wastewater

et al. 2023

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“…numerous interests as indicators to extract and identify tiny amounts of metal ions in various samples [10][11][12] . Azo-complexes have been studied intensively because of their important features and applications such as catalysts, antimicrobial, erosion inhibitors and anticancer [13][14][15] . Azo-complexes that derived from sulfamethoxazole and pyrazole 16,17 display unique activities against tuberculosis.…”

Section: Introductionmentioning

confidence: 99%

تحضير ، تشخيص ، دراسة التحلل الحراري و فعالية مضادات الاكسدة لمعقدات بعض ايونات معادن الكروم الثلاثي والحديد الثلاثي والمنغنيزالثنائي والبلاديوم الثنائي مع صبغة ازو مشتقة من بارا- مثل-2-هيدروكسي بنزلديهايد

Abdulrazzaq,

Al-Hamdani

2024

Baghdad Sci.J

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A new Azo Dye ligand HL was 4-((3-formyl-2-hydroxyphenyl)diazenyl)-N-(5-methylisoxazol-3-yl)benzenesulfonamide,this synthesized ligand was used for complexation with different metal ions like Cr(III), Fe(III), Mn(II) and Pd(II) by using a molar ratio of ligand: metalas 1:1. Resulted compounds were characterized by NMR (1H and 13C), UV–vis spectroscopy, TGA, DSC, FT‐IR, MS, elemental analysis, magnetic moment and molar conductivity studies. The results showed that the geometrical structural were octahedral geometries for the Cr(III), Mn(II) and Fe(III) complexes, square planer for Pd(II) complex. The antioxidant activities of the prepared compounds were assessed by using 1.1‐diphenyl‐2‐picrylhydrazyl as the free radical, and the results showed that the complex azo dye were found to possess potent antioxidant activity. The structure–activity relationship of the ligand and its complexes indicates that the presence of electron‐donating moieties, such as Cr(III), Mn(II) and Fe(III), in the chemical structure increases the antioxidant activity, whereas the Pd(II) complexes diminished the antioxidant activity, indicating the superior activity of the hydroxyl radical (OH·) over the superoxide radical.

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“…Transition metals such as V 4+ , Cr 3+ , Mn 2+ and Cu 2+ have been used in medicine for a long time 14 . Many metal sulfonamide complexes have been shown to be more potent than the parent sulfonamides 15 .Because of their interesting bioactivity, many studies have been performed on heterocyclic azo dyes and their metal chelate 16,17 . Azo dye metal chelates are of interest for use in molecular memory storage, non-linear visual representations, and printing systems.…”

Section: Introductionmentioning

confidence: 99%

تحضير ، تشخيص دراسة التحلل الحراري فعالية مضادات الاكسدة لمعقدات العناصر الانتقالية مع ليكاند صبغة الازو

Abdullah,

Al-Hamdani

2024

Baghdad Sci.J

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Diazotization reaction between 1-(2,4,6-Trihydroxy-phenyl)-ethanone and diazonium salts was carried out resulting in ligand 4-(3-Acetyl-2,4,6-trihydroxy-phenylazo)-N-(5-methyl-isoxazol-3-yl)-benzenesulfonamide, this in turn reacted with the next metal ions (V4+ , Cr3+ , Mn2+ and Cu2+) forming stable complexes with unique geometries such as (Octahedral for both Cr3+ , Mn2+ and Cu2+ ,squar pyramidal for V4+). The creation of such complexes was detected by employing spectroscopic means involving ultraviolet-visible which proved the obtained geometries, fourier transfer proved the formation of azo group and and the coordination with metal ion through it. Pyrolysis (TGA & DSC) studies proved the coordination of water residues with metal ions inside the coordination sphere as well as chlorine atoms. Moreover, element micro-analysis and AAS that gave corresponding outcome with theoretically counting outcome. (1H &13C-NMR) and magnetic quantifications can also indicate the formation of ligand-H3L and occurrence of coordination. The thermodynamic constants (∆H, ∆S and ∆G) were calculated. The DPPH radical scavenging method will be used to assess the antioxidant activities of the compounds the compounds showed antioxidant abilities to scavenge free radical.

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Azo ligand as new corrosion inhibitor for copper metal: Spectral, thermal studies and electrical conductivity of its novel transition metal complexes

Cited by 16 publications

References 73 publications

Modification of chitosan with cellulose and gelatin for the removal of Cu²⁺, Fe²⁺, and Pb²⁺ from oily wastewater

Modification of chitosan with cellulose and gelatin for the removal of Cu²⁺, Fe²⁺, and Pb²⁺ from oily wastewater

تحضير ، تشخيص دراسة التحلل الحراري فعالية مضادات الاكسدة لمعقدات العناصر الانتقالية مع ليكاند صبغة الازو

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Azo ligand as new corrosion inhibitor for copper metal: Spectral, thermal studies and electrical conductivity of its novel transition metal complexes

Cited by 16 publications

References 73 publications

Modification of chitosan with cellulose and gelatin for the removal of Cu2+, Fe2+, and Pb2+ from oily wastewater

Modification of chitosan with cellulose and gelatin for the removal of Cu2+, Fe2+, and Pb2+ from oily wastewater

تحضير ، تشخيص دراسة التحلل الحراري فعالية مضادات الاكسدة لمعقدات العناصر الانتقالية مع ليكاند صبغة الازو

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Modification of chitosan with cellulose and gelatin for the removal of Cu²⁺, Fe²⁺, and Pb²⁺ from oily wastewater

Modification of chitosan with cellulose and gelatin for the removal of Cu²⁺, Fe²⁺, and Pb²⁺ from oily wastewater