JOURNAL OF MOLECULAR LIQUIDS
·
2021
·
IF 6.165
Xiaoyun Zhang,Meng Zhang,Zhisong Zhang,Qing Li,Renqing Lv,Wei Wu
Three novel bis-Mannich bases (named as M-n-M) have been synthesized by condensation reaction of acetophenone and formaldehyde with different aliphatic diamines (n represents the number of carbon atoms in the diamines). Their corrosion inhibition behaviors for N80 steel in 15% HCl solution were evaluated through weight loss measurements, electrochemical tests, scanning electron microscope (SEM), atomic force microscopy (AFM), X-ray photoelectron spectroscopy (XPS) and contact angle measurements. The results showed that the inhibition efficiency was increased with concentration as well as the alkyl chain length of the inhibitor, with the best inhibitor efficiency obtained as 98.20% for 0.3 % M-8-M in 15% HCl at 90 °C. The electrochemical tests revealed these inhibitors are mixed control type. SEM , AFM, XPS and contact angle measurement results revealed that the inhibitors form a compact adsorption layer on N80 steel surface. Adsorption mechanism of the inhibitors obeys the Langmuir isotherm, and physical adsorption and chemical adsorption exist simultaneously. M-8-M was compared with two commercial inhibitors at elevated temperature and gave a satisfactory corrosion rate of 15.13 mm·y −1 on N80 steel in 15% HCl at 120 °C.
研究领域:
材料科学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2025
·
IF 5.4
Fengting Li,Yi Zhou,Zhikun Wang,Wentao Qu,Huiling Su,Miantuo Li,Nannan Cui,Shuangqing Sun,Yu Fu,Songqing Hu
Carbon dots (CDs) have been studied as eco-friendly corrosion inhibitors for metals. However, the mechanisms behind their effectiveness are not fully understood. We developed a cost-effective and environmentally friendly method to synthesize Ce-doped CDs (CeCDs) using urea, ammonium citrate, and cerium nitrate. By optimizing the Ce doping concentration to 200 μg/L, we achieved a high corrosion inhibition efficiency. When tested in 1 M HCl, CeCDs at 200 mg/L showed 80 % inhibition, while ionic liquid-modified CeCDs (IL-CeCDs) demonstrated an even higher efficiency of 95.35 % on N80 steel. Both CeCDs and IL-CeCDs adsorb onto metal surfaces through a combination of physical and chemical interactions, inhibiting corrosion mainly by affecting cathodic reactions. Among different Ce-doped CDs, CeCD3N, which has a single Ce atom doping, exhibited the highest molecular reactivity, allowing it to interact more effectively with the Fe surface. Further analysis revealed that Ce doping reduces the energy gap of CDs, enhancing their reactivity. Molecular dynamics simulations showed that CeCD3N adsorbs more strongly and forms a closer inhibitor film on the Fe surface compared to other Ce-doped CDs, making it an effective corrosion inhibitor.
研究领域:
材料科学
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腐蚀与防护
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表面化学
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2024
·
IF 6.3
Yu Wu,Lingchi Zeng,Yancheng Zheng,Fuchang You,Xuejin Liu
In this study, nitrogen-doped carbon dots (N-CDs) were synthesized via a one-step hydrothermal method using pectin polysaccharide as the carbon source, with 1-hexylamine, 1,2-diaminocyclohexane, and diethylenetriamine as individual nitrogen sources. The chemical composition, fluorescence properties, and morphology of the synthesized N-CDs were characterized. Their corrosion inhibition performance on N80 steel in 1 M H 2 SO 4 was evaluated using electrochemical analyses and weight loss experiments. Tafel and EIS analyses demonstrated that at a concentration of 200 mg/L, the maximum inhibition efficiencies of PHA-CDs, PCA-CDs, and PDA-CDs, synthesized using monoamine, diamine, and triamine as nitrogen sources, were 75.3 %, 90.1 %, and 95.4 %, respectively. The inhibition efficiency increased with the total nitrogen and pyrrolic N content in the N-CDs, corresponding to the choice of nitrogen source. Weight loss experiments further confirmed these trends. Additionally, the N-CDs were found to act as mixed-type inhibitors with a predominant anodic inhibition effect and are classified as predominantly chemisorptive. The adsorption behavior adhered to the Langmuir adsorption model, where coordination complexes formed between pyrrolic N and metal Fe increase the surface coverage of the adsorption film, thereby enhancing corrosion resistance.
研究领域:
材料科学
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电化学
·
绿色化学
✓ 已验证
产品关联
DOI
高影响因子
Materials
·
2022
·Vol. 15
·期 12
·4218
·
IF 3.748
Yuhao Chen,Zhonghua Chen,Yaowen Zhuo
New Mannich bases, 3-morpholino-1-phenylpropan-1-one (MPO) and 3-morpholino-1-phenyl-3-(pyridin-4-yl) propan-1-one (MPPO), were synthesized, characterized, and studied as corrosion inhibitors for N80 steel in 1 M hydrochloric acid (HCl) solution using weight loss, potentiodynamic polarization, electrochemical impedance spectroscopy, scanning electron microscopy, X-ray photoelectron spectroscopy, and FT-IR spectroscopy. The inhibition efficiency increases with increasing inhibitor concentrations, and the corrosion inhibition efficiency of the MPO and MPPO could reach 90.3% and 91.4%, respectively, at a concentration of 300 ppm at 305 K. The effect of the temperature on the corrosion inhibition behavior of inhibitors was discussed. Electrochemical tests showed that the synthesized inhibitors are mixed. The EIS test results showed that the presence of MPO and MPPO reduced the double-layer capacitance in the corrosion process, thereby reducing the charge transfer resistance. The SEM and EDX results showed that the MPO and MPPO formed a uniform adsorption film on the surface of the N80 steel. The adsorption mechanism of the inhibitors was simulated with different adsorption models and the results showed that the inhibitors were the chemisorbed type. The results of the FT-IR spectroscopy proved that the inhibitor interacted with metal atoms on the steel surface.Keywords:N80 steel;acid corrosion;Mannich bases;inhibitor;electrochemical tests
研究领域:
材料科学
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腐蚀与防护
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有机化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2024
·Vol. 48
·期 7
·3064-3079
·
IF 2.7
Miantuo Li,Fengting Li,Jianwen Hu,Nannan Cui,Huiling Su,Lizhi Li,Zhikun Wang,Shuangqing Sun,Songqing Hu
Three chitosan ionic liquid type Schiff bases (CS-IL-SBs) were synthesized by grafting three aldehydes (vanillin, cinnamaldehyde, and pyridine-4-carboxaldehyde) on CS-IL (chitosan grafted with p-toluene sulfonic acid) through a Schiff base reaction. Thermogravimetric analysis indicated that the thermal stability of CS was enhanced by the modification of IL and Schiff base groups. All CS-IL-SBs present a non-crystalline structure as analyzed using X-ray diffraction technique and have a positively charged surface in solution for improved dispersion stability as analyzed using zeta potential testing. A corrosion inhibition performance investigation using electrochemical and mass loss methods was undertaken, which were supported with surface analysis and computational studies. All the CS-IL-SBs act as effective corrosion inhibitors obeying Langmuir adsorption isotherm containing both chemisorption and physisorption for N80 steel in 15% HCl solution. Among them, CS-IL-Vin (grafted by vanillin) exhibits a maximum inhibition efficiency of 83.66% at 400 mg L−1. The analysis of the corroded metal surface via scanning electron microscopy depicts a considerably smooth morphology in the presence of adsorbed CS-IL-SBs. Contact angle tests indicated that the water-repellent ability of the metal surface was increased by the addition of CS-IL-SBs. Density functional theory calculations indicated that the active regions of CS-IL-SBs are mainly distributed in –SO3−, benzene rings, and Schiff base groups. Molecular dynamics simulations show that CS-IL-SBs are parallelly adsorbed on the metal surface to form a stable protective film. CS-IL-Vin shows the best performance among the three CS-IL-SBs, which was selected to be compounded with aided inhibitors with different electrical properties. When CS-IL-Vin was compounded with negatively charged 3-carboxybenzene sulfonate in a ratio of 1 : 3, corrosion inhibition efficiency was the highest, reaching 93.45%.
研究领域:
材料科学
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电化学
·
表面工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MOLECULAR STRUCTURE
·
2023
·
IF 3.8
Xiaoyun Zhang,Yuxin Su,Yinhang Zhang,Shuo Guan,Xiaoyang Wang,Yanping He
In an effort to develop an effective corrosion inhibitor which is applicable to the chelating acidizing fluids in petroleum production, a novel heterocyclic quaternary ammonium salt dimer (TQD) was synthesized through the reaction of quinoline with 4-chloromethylthiazole hydrochloride. An analogue compound, benzyl quinolinium chloride dimer (BQD), was also prepared for comparison. Their anti-corrosion performances in 15% lactic acid solution were investigated through weight-loss experiments, electrochemical tests, surface morphology observation and simulation calculations. The outcomes demonstrate that inhibition efficiency of 99.38% has been achieved with 0.1% TQD at 363 K, which is much higher than that of BQD at the same condition. Both inhibitors were consistent with the Langmuir model, and both were hybrid adsorption, including physical and chemical adsorptions. According to the results of surface analysis (SEM, AFM, XPS, contact angle) and theoretical calculation (DFT and MD), TQD can effectively slow down the metal corrosion in lactic acid and thus is a promising inhibitor for oil and gas well acidizing purpose. The stronger adsorption capacity of TQD may come out of the contribution of thiazole rings in the molecules.
研究领域:
材料科学
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石油工程
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电化学
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2022
·
IF 5.518
Yin Yang,Renling Lu,Wu Chen,Ping Mei,Lu Lai
Three amphiphilic carbon dots (CDs, C 6 -CDs, C 8 -CDs, and C 12 -CDs) were synthesized and first adopted as a corrosion inhibitor for mild steel. The inhibition behavior of amphiphilic CDs for N80 steel in hydrochloric acid solution was studied via weight loss tests, surface characterization , and electrochemical measurements. Results confirmed that they could protect N80 steel effectively; the longer the carbon chain was, the better the inhibition effect was. Specifically, the inhibition efficiency of C 12 -CDs reached 92.9 % at 150 mg/L. Moreover, due to the fluorescence characteristics of CDs, the changes in adsorption film during corrosion could be directly observed under UV light . A dense adsorption film was formed through the electrostatic interaction with CDs and the metal surface . Long carbon chains formed a hydrophobic layer on the surface of N80 to isolate the corrosive medium.
研究领域:
材料科学
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腐蚀与防护
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电化学
✓ 已验证
产品关联
DOI
高影响因子
THIN SOLID FILMS
·
2022
·
IF 2.358
Yahui He,Shihong Zhang,Yi He,Hongjie Li,Yi Fan,Yihan Zhang,Yuxin Xiang,Teng He,Ruxia Song,Bo Liu,Zhifei Zhang
Zirconium carbide (ZrC) nano-ceramic particles were embedded in the nickel-phosphorus (Ni-P) nanocomposite coating on the surface of N80 steel through electroless deposition strategy. The addition of ZrC can significantly affect the surface morphology, microstructure, wear resistance and corrosion resistance of the coating. Compared with pure Ni-P coating, the average friction coefficient of Ni-P/ZrC (1 g·L −1 ) composite coating decreased from 0.510 to 0.224, and the specific wear rate is reduced from 1.31 × 10 −5 mm 3 ·m −1 ·N −1 to 2.81 × 10 − 6 mm 3 ·m −1 ·N −1 . In terms of improving the corrosion resistance of the coating, Ni-P/ZrC (1 g·L −1 ) composite coating shows a lower corrosion tendency and a higher electrochemical impedance, and its corrosion rate (4.54 × 10 −3 mm·a −1 ) is one order of magnitude lower than Ni-P coating (5.08 × 10 −2 mm·a −1 ). In addition, the long-term corrosion experiments of the samples show that the composite coating has a longer protective effect on the substrate. Through the analysis of the corrosion morphology, it is found that the improvement of the corrosion resistance of the coating is due to the addition of ZrC, which reduces the surface defects of the coating. At the same time, the labyrinth effect formed between ZrC and the coating can also slow down the corrosion rate.
研究领域:
材料科学
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表面工程
·
腐蚀与防护
✓ 已验证
产品关联
DOI
高影响因子
RUSSIAN JOURNAL OF APPLIED CHEMISTRY
·
2020
·Vol. 93
·期 3
·380-392
·
IF 0.69
Li Jianbo,Lv Jie,Fu Luoping,Tang Mingjin,Wu Xiaodan
Abstract Inspired by the high-water solubility, photoluminescence and low cytotoxicity of N-doped carbon quantum dots (N-CQDs), fluorescent corrosion inhibitors with size of 4–8 nm were synthesized from disodium ethylenediaminetetraacetate, sulfamic acid, and urotropine salt. We expect that these N-CQDs may possess an excellent protective ability to inhibit the corrosion of carbon steel in aggressive solutions owing to its special functional group. The inhibitory mechanism of the inhibitor on N80 steel in saturated CO 2 3 wt % NaCl solution was studied by weight loss, adsorption curve fitting, electrochemical measurement, and surface morphology and elemental analysis. The results show that corrosion of N80 carbon steel in saturated CO 2 3 wt % NaCl solution is significantly inhibited by the addition of N-CQDs, which is attributed to the formation of its adsorption film, preventing the contact of iron with chloride ions and is an effective corrosion inhibitor.
研究领域:
材料科学
·
腐蚀与防护
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电化学
✓ 已验证
DOI
高影响因子
International Journal of Electrochemical Science
·
2023
·
IF 1.5
Hu Wang,Jun Tang,Juan Xie
Corrosion inhibition effects of asymmetric gemini corrosion inhibitor on N80 steel in a CO 2 -saturated brine solution had been investigated by weight loss and electrochemical measurements. The synergistic effects of gemini with thiourea (TU), thiazole (TZ) and pyridine (PD) were also studied with weight loss and electrochemical measurements. The results revealed that asymmetric gemini corrosion inhibitor displayed excellent corrosion inhibition performance at 70°C in CO 2 -saturated brine solution. The inhibitor was anodic type in nature. There existed apparent synergistic effect between asymmetric gemini inhibitor and other ingredients. The mixture inhibitors can provide excellent protection to N80 steel at test condition. The best formula of mixture inhibitors was then presented. The synergistic mechanism of gemini with other ingredients were also discussed.
研究领域:
材料科学
·
腐蚀与防护
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED ENGINEERING MATERIALS
·
2023
·
IF 3.6
Li Wang,Zhikun Wang,Fengting Li,Yueqi Liu,Miantuo Li,Nannan Cui,Songqing Hu,Shuangqing Sun
Chitosan microspheres (CSM) loaded with synthesized Gemini imidazolium-based ionic liquids ([C 2 (Bim) 2 ]Cl 2 @CSM and [C 6 (Bim) 2 ]Br 2 @CSM) are constructed as smart corrosion inhibitors to protect N80 steel in hydrochloric acid solution. The optimal inhibition efficiency of [C 2 (Bim) 2 ]Cl 2 and [C 6 (Bim) 2 ]Br 2 at 300 mg L −1 reaches 94.68% and 95.96%, respectively, indicating mixed-type inhibition behavior. On this basis, the prepared [C 2 (Bim) 2 ]Cl 2 @CSM and [C 6 (Bim) 2 ]Br 2 @CSM can proactively identify corrosive environments and protect the metal. The microspheres are pH-responsive owing to the presence of Schiff-base C═N bonds and the loaded inhibitors can be released rapidly in acidic environment. Released inhibitors are delivered to corroded sites and synergistically interact with decomposed microspheres for enhanced corrosion inhibition effect.
研究领域:
材料科学
·
腐蚀与防护
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
ANTI-CORROSION METHODS AND MATERIALS
·
2025
·
IF 2.6
Xiong Zhao,Junying Zhang,Jing Li,Ping Qiu
Purpose AQs3This study aims to explore the corrosion inhibition performance and mechanism of pyridine derivatives on the corrosion of N80 steel in a 0.5 M HCl solution using electrochemical experiments. Design/methodology/approach This study evaluates the corrosion performance of three pyridine derivatives (4-hydroxypyridine [OI], 4-aminopyridine [NI] and 4-mercaptopyridine [SI]) as organic corrosion inhibitors for mild steel in a 0.5 M HCl using potentiodynamic polarization, electrochemical impedance spectroscopy and atomic force microscopy. The bonding mechanism between the reactive groups of the inhibitor molecules and the metal surface is analyzed using theoretical calculations. Findings The corrosion inhibition efficiency of the studied inhibitors on mild steel follows the sequence: SI > NI > OI. The bonding mechanism between the reactive groups of the inhibitor molecules and the metal surface is analyzed using theoretical calculations. It is found that the reactive group changes the charge transfer and the bonding strength of the corrosion inhibitor to the metal surface, which affects the corrosion inhibition performance. Originality/value This study provides valuable insights into the role of electron transfer in the interaction between the inhibitor and the metal surface, thereby contributing to the development and design of more effective and economical corrosion inhibitors.
研究领域:
材料科学
·
腐蚀与防护
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）