Adsorption and inhibition effect of tetraaza-tetradentate macrocycle ligand and its Ni (II), Cu (II) complexes on the corrosion of Cu10Ni alloy in 3.5% NaCl solutions

Shalabi, K.; El‐Gammal, O.A.; Abdallah, Y.M.

doi:10.1016/j.colsurfa.2020.125653

Cited by 39 publications

(16 citation statements)

References 105 publications

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“…The sample was the solid filtered by the experimental group with an initial concentration of 200 mg/L. As shown in Figure 3, the conspicuous peak was observed at 933.2 (Cu2p 3/2 ) in the wide scan XPS spectra (Figure 3a), 26 evidencing that Cu(II) was successfully adsorbed to PS-MA. 24 I.…”

Section: Xps Analysismentioning

confidence: 99%

Converting waste polystyrene foam into new value‐added materials: A large‐capacity scavenger to remove cationic dyes and heavy metals

Hao

Xie

et al. 2021

J of Applied Polymer Sci

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Waste white foam, toxic dyes, and metal ions are difficult to degrade in the ecological environment, posing a serious threat to human health and natural beauty, it is of great significance to design a functional material to jointly solve these problems. This study provided a facile approach to convert waste polystyrene foam into a new acid anhydride modified polystyrene adsorbent (PS-MA) for the dyes and heavy metals removal from aqueous solution. The as-obtained absorbent was characterized by Fourier transform infrared spectroscopy, thermogravimetry, scanning electron microscopy, energy dispersive spectroscopy, Brunauer Emmett Teller method, and X-ray photoelectron spectroscopy. Influencing factors are including, pH, dye concentration, contact time and temperature on the adsorption of methylene blue (MB), safranine T (ST), and Cu(II) were systematically studied. Boehm titration showed that the content of surface carboxyl groups reached 4.53 mmol/g. The maximum adsorption capacity had reached 1405.37 mg/g for MB, 2269.33 mg/g for ST, 65.03 mg/g for Cu(II). Moreover, the kinetic data were in good agreement with the pseudo-second-order model and closed to adsorption equilibrium at 20 min. After five times of recycling experiments and the application of mixed dye wastewater with salinity, PS-MA showed excellent stability and removal ability. Abundant efforts revealed a broad application prospect of PS-MA materials in water remediation.

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Section: Xps Analysismentioning

confidence: 99%

Converting waste polystyrene foam into new value‐added materials: A large‐capacity scavenger to remove cationic dyes and heavy metals

Hao

Xie

et al. 2021

J of Applied Polymer Sci

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“…The electronic spectrum of Fe(III) complex ( 1 ) showed a band at 548 nm (Table 3) assigned for the d–d transition and/or strong charge transfer (CT) of octahedral structure of Fe(III) complex. [ 65,67,69–71 ] The electronic spectra of the Co(II) and Ni(II) complexes ( 2 and 3 ) showed bands at 593 and 499 nm, respectively, which refer to the 2 A 1g – 2 B 2g and 3 T 1 → 3 T 1 (P) transitions for Co(II) square planar [ 56 ] and Ni(II) tetrahedral [ 57 ] complex, respectively. However, Cu(II) complex exhibited band at 595, which refers to the 2 B 1g → 2 E g transition for Cu(II) octahedral structure.…”

Section: Resultsmentioning

confidence: 99%

New solvatochromic complexes of 1,2‐bis[(5,6‐diphenyl‐1,2,4‐triazin3‐yl)hydrazinylidene‐methyl]benzene: Synthesis, spectroscopic, biological, docking, and theoretical studies

Samy

Taha

Omar

2021

Applied Organom Chemis

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A new bistriazine hydrazone ligand (H2L; H2BDTB) is derived from 5,6‐diphenyl‐1,2,4‐triazine‐3‐ylhydrazine (DTH) with o‐phthalaldehyde in ratio (2:1). The Fe(III), Co(II), Ni(II), Cu(II), and Th(IV) complexes (1–5), as well as the Co(II) complex (6) (prepared in the presence of cetyltrimethylammonium bromide [CTAB]), are synthesized. They are characterized by elemental analyses, spectral (ultraviolet–visible [UV–Vis], infrared [IR], mass, 1H NMR, and electron spin resonance [ESR]), magnetic susceptibility, molar conductivity, and thermal gravimetric analysis (TGA) measurements; and morphological structures are scanned by electron microscopy (SEM) that showed rod shape, irregular bulk sheets, and fused aggregated clusters for free ligand, Co(II) complexes (2 and 6), respectively. Moreover, cobalt(II) complex (6) exhibited an octahedral geometry; however, cobalt(II) complex (2) showed square planar geometry as deduced from magnetic moment and UV–Vis measurements. Fluorescence spectra for ligand and its Fe(III) and Th(IV) complexes have been measured in different solvents to investigate their solvatochromic behavior that used to estimate dipole moments either in ground and excited states. The antimicrobial and antitumor activities of free ligand and its complexes were investigated, in addition to molecular docking studies using MOE 2014.0901 software (PDB. I.D.3ce3). The data showed that Co(II) complex (6) can be nominated as one of the most powerful antitumor. The theoretical calculation for bistriazine ligand and its complexes were performed using DFT and PM3, and the data are correlated with the experimental results.

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“…Öte yandan, temas açısı, PDSE içeren asidik ortamda 1 saat boyunca inhibe edilmiş çözeltiye maruz kalan metal yüzeyde 75,305° 'e yükselmiştir. Artan temas açısı değeri, bakır yüzeyine inhibitör moleküllerin adsorpsiyonu ile açıklanabilir ve bu durum yüzeyin hidrofobikliğini arttırabilir [26].…”

Section: Yüzey Analizleriunclassified

“…Asidik ortama PDSE inhibitörü eklendiğinde ise bakır için potansiyel değerlerinin azaldığı ve inhibitör içermeyen ortama göre daha negatif potansiyellerde olduğu belirlenmiştir. Bu durum, 0,5 M H 2 SO 4 çözeltisinde PDSE inhibitörü varlığında, bakırın katodik reaksiyonu üzerindeki etkisinin anodik reaksiyona göre daha etkin olması ile açıklanabilir [26,27].…”

Section: Açık Devre Potansiyelinin Zamanla Değişimiunclassified

Bakırın Asidik Ortamdaki Korozyonuna Hurma (Phoenix dactylifera) Çekirdeğinin İnhibisyon Etkisinin İncelenmesi

Şahin¹,

DURSUN²,

TUNÇ³

et al. 2021

Türk Doğa Ve Fen Dergisi

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Öz: İnhibitör kullanımı, metalik malzemeleri korozyondan korumak için tercih edilen en yaygın yöntemlerden bir tanesidir. Korozyon inhibitörü olarak organik maddeler yaygın olarak kullanılmaktadır. Bununla birlikte bu tür maddelerin yüksek maliyetleri ve toksik özellikleri kullanımlarını kısıtlar. Yapılan son çalışmalar, çevre dostu doğal ürünler ya da bu ürünlerden elde edilen atıkların korozyon inhibitörü olarak kullanılabildiklerini göstermektedir. Bu çalışmada, çevre dostu doğal bir atık olan hurma (phoenix dactylifera) çekirdeği ekstresinin (PDSE) bakırın 0,5 M H 2 SO 4 çözeltisindeki korozyonuna inhibisyon etkisi araştırılmıştır. Bu amaçla, açık devre potansiyelinin zamanla değişimi (E ocp -t), lineer polarizasyon direnci (LPR), elektrokimyasal impedans spektroskopisi (EIS) ve potansiyodinamik polarizasyon (PP) teknikleri kullanılmıştır. İnhibitörlü ortamda bekletilen bakırın yüzeyi SEM ve temas açısı kullanılarak karakterize edilmiştir. İnhibitör içeren ortamda bakırın yüzey yükü, sıfır yük potansiyeli (PZC) tekniği ile belirlenmiş ve bir adsorpsiyon mekanizması önerilmiştir. Sonuçlar, PDSE'nin 0,5 M H 2 SO 4 çözeltisinde bakırın korozyonunu yavaşlattığını göstermiştir.

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Adsorption and inhibition effect of tetraaza-tetradentate macrocycle ligand and its Ni (II), Cu (II) complexes on the corrosion of Cu10Ni alloy in 3.5% NaCl solutions

Cited by 39 publications

References 105 publications

Converting waste polystyrene foam into new value‐added materials: A large‐capacity scavenger to remove cationic dyes and heavy metals

Converting waste polystyrene foam into new value‐added materials: A large‐capacity scavenger to remove cationic dyes and heavy metals

New solvatochromic complexes of 1,2‐bis[(5,6‐diphenyl‐1,2,4‐triazin3‐yl)hydrazinylidene‐methyl]benzene: Synthesis, spectroscopic, biological, docking, and theoretical studies

Bakırın Asidik Ortamdaki Korozyonuna Hurma (Phoenix dactylifera) Çekirdeğinin İnhibisyon Etkisinin İncelenmesi

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