APPLIED SURFACE SCIENCE
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2024
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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
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绿色化学
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DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2025
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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
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DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
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2024
·Vol. 48
·期 7
·3064-3079
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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
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表面工程
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产品关联
DOI
高影响因子
RUSSIAN JOURNAL OF APPLIED CHEMISTRY
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2020
·Vol. 93
·期 3
·380-392
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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
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腐蚀与防护
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电化学
✓ 已验证
DOI
高影响因子
ANTI-CORROSION METHODS AND MATERIALS
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2025
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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
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腐蚀与防护
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电化学
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产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
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2024
·Vol. 59
·期 8
·3604-3623
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IF 3.5
Wang Xintong,Yang Jiang,Chen Xu,Wang Yefei,Yang Zhen,Ding Wei
To mitigate CO 2 corrosion in the oil and gas industry, a green non-toxic β -N-butyl amino propionic acid (BAA) was synthesized using a low-energy and zero-waste one-pot method. The effectiveness of BAA as a corrosion inhibitor for N80 steel in CO 2 -saturated brine water was investigated through experimental measurements and theoretical modeling. The results demonstrate that BAA functions as an effective mixed-type corrosion inhibitor. BAA molecules interact with F (1 1 0) with the–COO– and–NH 2 + -moiety in the hydrophilic head group, and the hydrophobic groups are adsorbed on the steel surface in a configuration 45° away from the steel surface. The adsorption is a mixture of physical and chemical processes and is consistent with the Langmuir isothermal adsorption formula. When the concentration is greater than 50 ppm, a complete corrosion inhibitor film with high hydrophobicity can be adsorbed on the steel surface, which can effectively impede the diffusion of corrosive species from brine to the steel surface. Graphical abstract
研究领域:
腐蚀科学
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材料工程
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环境化学
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石油天然气工业
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DOI
高影响因子
Coatings
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2022
·Vol. 12
·期 12
·1975
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IF 3.236
Shoumin Sun,Yang Li,Kejing Gao,Li Cheng,Xue Yang,Ruiquan Liao
In the process of petroleum exploitation, in order to effectively inhibit the corrosion damage of acid to metal equipment. Mannich base corrosion inhibitors are generally added to inhibit the corrosion damage of acid. In order to enhance the solubility of Mannich base corrosion inhibitor. This paper intends to introduce hydrophilic groups to enhance the solubility of the Mannich base corrosion inhibitor. In this paper, two efficient corrosion inhibitors 3-(2-hydroxyethylamino)-1-phenylpropan-1-one (MY1) and 3-(2-aminoethylamino)-1-phenylpropan-1-one (MY2), were synthesized based on the Mannich reaction, using formaldehyde, acetophenone and ethanolamine/ethylenediamine as reaction raw materials. The corrosion inhibition performance of the inhibitor on N80 steel in 15% (mass fraction) hydrochloric acid solution was studied by means of the static weight loss method, electrochemical test and optical contact angle analysis. It could be seen from the static weight loss method that the corrosion rate in the hydrochloric acid solution before and after adding 0.7% (mass fraction) corrosion inhibitor concentration decreased from 129.39 g·m−2·h−1to 1.45 g·m−2·h−1and 2.79 g·m−2·h−1, respectively. The corrosion inhibition rate could reach 98%, indicating that both inhibitors had good corrosion inhibition performance, and the corrosion inhibition effect of MY1 was better than that of MY2. It was found from the electrochemical tests that the two inhibitors were mixed corrosion inhibitors mainly inhibiting the anodic reaction, and both inhibitors belonged to spontaneous adsorption, and their adsorption behaviors followed the Langmuir adsorption isotherm. In addition, the surface of N80 steel was characterized by SEM, EDS elemental mapping and contact angle measurement. The results show that a dense hydrophobic film is formed on the surface of the steel sheet after the addition of a corrosion inhibitor, which prevents corrosion.
研究领域:
材料科学
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腐蚀与防护
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石油工程
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DOI
高影响因子
SURFACE & COATINGS TECHNOLOGY
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2024
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IF 5.3
Jinxue Song,Yi He,Bo Liu,Ruxia Song,Zhifei Zhang,Hongjie Li,Huilian Zhou,Zhiyuan Li,Xinyu Cheng,Jiamin Zhong,Liping Yan
This study developed a novel Ni B/Ca-CNFs/MWCNTs/h-BN coating on N80 steel. The disadvantages of hexagonal boron nitride (h-BN) were improved by creatively combining multi-walled carbon nanotubes (MWCNTs), cellulose nanofibers (CNFs), and calcium ion cross-linking strategies. This led to the creation of Ca-CNFs/MWCNTs/h-BN hybrids, which were then doped into Ni B coatings by varying pulse current densities. The results demonstrated that the surface morphology , mechanical properties, and toughness of the composite coating are all influenced by the Ca-CNFs/MWCNTs/h-BN doped at various current densities. Meanwhile, the Ni B/Ca-CNFs/MWCNTs/h-BN (4 A/dm 2 ) coating has the greatest microhardness (902.42 Hv) and the smallest friction coefficient (0.487) under reciprocating dry sliding friction conditions of Si 3 N 4 friction balls. In addition, the results of nanoindentation and tensile tests show that the elastic modulus of Ni B/Ca-CNFs/MWCNTs/h-BN (4 A/dm 2 ) composite coating is 194.096 MPa and the tensile elongation is 12.2 %.
研究领域:
材料科学
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表面工程
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纳米技术
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）