Synthesis and Characterization of Zn–Organic Frameworks Containing Chitosan as a Low-Cost Inhibitor for Sulfuric-Acid-Induced Steel Corrosion: Practical and Computational Exploration

Gouda, Mohamed; Khalaf, Mai M.; Shalabi, K.; Al‐Omair, Mohammed A.; El‐Lateef, Hany M. Abd

doi:10.3390/polym14020228

Cited by 24 publications

(16 citation statements)

References 69 publications

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“…It was possible to find that the addition of both additives enhanced the R ct values. This effect was enhanced with increased additive concentration, and it can be concluded that the adsorbed films formed by imidazole derivatives became denser and thus alleviated the charge transfer process to a greater extent. − Impressively, the R ct values of 2-imidazolidinone were higher than those of allantoin, implying that multiple active adsorption sites from allantoin would instead destroy the compactness of the adsorption membrane. Furthermore, the values of C dl decreased with the introduction of the two kinds of adsorbed films, which could be attributed to the replacement of water molecules with the imidazole derivatives, resulting in a less exposed electrode surface area .…”

Section: Resultsmentioning

confidence: 99%

Interfacial Adsorption and Corrosion Inhibition Behavior of Environmentally Friendly Imidazole Derivatives for Copper in the Marine Environment

Tan

Sun

et al. 2023

Langmuir

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Copper and copper alloys are commonly used in industry due to their excellent mechanical properties, making research on the corrosion resistance of copper of great significance. The corrosion inhibition properties of 2-imidazolidinone and allantoin for copper in 3.5 wt % NaCl were studied by weight loss and electrochemical tests. Changes in the density of the copper corrosion current and the impedance module indicated that 2-imidazolidinone and allantoin exhibited cathodic corrosion inhibitors and a valid protective effect. Meanwhile, the weight loss tests showed that the inhibition efficiency of 2-imidazolidinone and allantoin at 3 mM reached 98.94% and 97.82%, respectively. The surface physiochemical properties were qualitatively and quantitatively studied by using SEM-EDS, XPS, white light interferometry, and contact angle analysis. The interfacial adsorption behavior revealed by QCM, synchrotron radiation micro-infrared, and adsorption isotherm analysis indicated that both imidazole derivatives formed an effective and rigid physical adsorption film and obeyed the Langmuir adsorption model on copper, while both the mass and thickness of the adsorption film formed by 2-imidazolidinone were higher than those of allantoin. This study contributed to an in-depth understanding of the interfacial adsorption behavior and corrosion inhibition ability of 2-imidazolidinone and allantoin and provided guidelines for the design and development of novel heterocycles as potential corrosion inhibitors for copper in marine environments. In particular, copper was used as a corrosion inhibitor in seawater storage and transport equipment.

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Section: Resultsmentioning

confidence: 99%

Interfacial Adsorption and Corrosion Inhibition Behavior of Environmentally Friendly Imidazole Derivatives for Copper in the Marine Environment

Tan

Sun

et al. 2023

Langmuir

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“…The greater the K ad value, the more the area of covered surface, and the more enhanced the anticorrosion film of ligands on the electrode interface. The negative data of G ads 0 suggested the unprompted adsorption of ligands at the electrode/electrolyte interface [41]. The usage of ∆G ads data to illustrate the approach of adsorption of inhibitor molecules on ms has been mostly conversed [41].…”

Section: Adsorption Isothermmentioning

confidence: 99%

“…The negative data of G ads 0 suggested the unprompted adsorption of ligands at the electrode/electrolyte interface [41]. The usage of ∆G ads data to illustrate the approach of adsorption of inhibitor molecules on ms has been mostly conversed [41].…”

Section: Adsorption Isothermmentioning

confidence: 99%

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Anti-Corrosive Potentials of Naphtho-Quinone/Naphtha-Aldehyde Schiff Bases for Mild Steel in HCL Medium: Synthesis, Characterization and DFT Studies

Wodi¹,

Festus²,

Nlemonwu³

2022

JCSN

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The corrosion inhibition of four ligands; L1, L2, L3 and L4 synthesized through reflux condensation, and characterized via spectroscopic methods were examined using weight loss measurements and Density Functional Theory(DFT). Factors like ligand’s chemical structure, immersion time, concentration, and temperature which affect efficiency of corrosion inhibition were evaluated. The experimental results revealed declined weight losses from 0.02-0.004g, 0.06-0.00625g and 0.11450- 0.06938g at 303K, 333K, and 363K temperature for concentration increase from 100-500ppm. The increase in weight loss arose from temperature (303-363K) increase. Obtained data denotes declined corrosion rate in the presence of the inhibitors in the acid solutions but decreased as the inhibition concentration increased at each temperature. The highest inhibition efficiency (%ᶯwL) for the ligands at 303K, 333K and 363K temperatures and 500 ppm concentration were observed as 89.39% (L3), 88.36% (L2) and 55.00% (L2) respectively. The exceptional inhibition proficiency of the ligands could be due to the availability of heteroatoms and aromatic rings with π-electrons within their structures. The increase in %ᶯwL for 5 hours immersion was in the order L2<L4<L1<L3, L1<L3<L4<L2 and L3<L1<L4<L2 at 303K, 333K, and 363K temperature respectively with L3 having the highest %ᶯwL at 89.39% at 303K. The desorption process of the ligands upon the mild steel surface (mss) followed Langmuir adsorption isotherm. The ∆Gads values acquired were amid -18.1709 to -35.6765KJ mol-1 suggestive of adsorption of the studied inhibitors on mss been physisorption. Chemical calculations and molecular descriptors of dipole moment(μ), energy gap, EHOMO, and ELUMO were acquired via B3LYP level with 6-31G (d, p) basis, while global reactivity descriptors; global softness(S), global hardness(η), electrophilicity index(ω) were derive and analyze using Koopman’s theorem. The ligands were found to be in good agreement with both experimental and theoretical results. The L3 ligand had the highest EHOMO value of - 8.4696567 denoting greater inhibition potency and conforming to the result obtained from corrosion %ᶯwL. The structural assemblages of the ligands were confirmed using spectroscopic and analytical methods.

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“…They consist of positively charged metal ions interconnected with organic ligands [2]. This regular array of metal ions can therefore be formed as a network with up to three dimensions [3]. MOFs are typically characterized by high porosity, low density, and excellent biocompatibility [4].…”

Section: Introductionmentioning

confidence: 99%

Binding Materials for MOF Monolith Shaping Processes: A Review towards Real Life Application

et al. 2022

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Metal–organic frameworks (MOFs) could be utilized for a wide range of applications such as sorption, catalysis, chromatography, energy storage, sensors, drug delivery, and nonlinear optics. However, to date, there are very few examples of MOFs exploited on a commercial scale. Nevertheless, progress in MOF-related research is currently paving the way to new industrial opportunities, fostering applications and processes interconnecting fundamental chemistry with engineering and relevant sectors. Yet, the fabrication of porous MOF materials within resistant structures is a key challenge impeding their wide commercial use for processes such as adsorptive separation. In fact, the integration of nano-scale MOF crystallic structures into bulk components that can maintain the desired characteristics, i.e., size, shape, and mechanical stability, is a prerequisite for their wide practical use in many applications. At the same time, it requires sophisticated shaping techniques that can structure nano/micro-crystalline fine powders of MOFs into diverse types of macroscopic bodies such as monoliths. Under this framework, this review aims to bridge the gap between research advances and industrial necessities for fostering MOF applications into real life. Therefore, it critically explores recent advances in the shaping and production of MOF macro structures with regard to the binding materials that have received little attention to date, but have the potential to give new perspectives in the industrial applicability of MOFs. Moreover, it proposes future paths that can be adopted from both academy and industry and can further boost MOF exploitation.

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Synthesis and Characterization of Zn–Organic Frameworks Containing Chitosan as a Low-Cost Inhibitor for Sulfuric-Acid-Induced Steel Corrosion: Practical and Computational Exploration

Cited by 24 publications

References 69 publications

Interfacial Adsorption and Corrosion Inhibition Behavior of Environmentally Friendly Imidazole Derivatives for Copper in the Marine Environment

Interfacial Adsorption and Corrosion Inhibition Behavior of Environmentally Friendly Imidazole Derivatives for Copper in the Marine Environment

Anti-Corrosive Potentials of Naphtho-Quinone/Naphtha-Aldehyde Schiff Bases for Mild Steel in HCL Medium: Synthesis, Characterization and DFT Studies

Binding Materials for MOF Monolith Shaping Processes: A Review towards Real Life Application

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