International Journal of Electrochemical Science
·
2023
·
IF 1.5
Chuan Lai,Hongxia Yang,Xiaogang Guo,Xiulan Su,Lvshan Zhou,Lei Zhang,Bin Xie
The new organic corrosion inhibitor of 2-( p -bromobenzylthio)-1 H -benzimidazole (Br-BBD) was synthesized in this work. After prepared, the adsorption and corrosion inhibition performance of Br-BBD for Q235 steel in HCl solution were studied using EIS, SEM, polarization measurement and WLM (weight loss measurement). The results exhibit that Br-BBD acts as an excellent corrosion inhibitor for Q235 steel in HCl solution, and the inhibition efficiency can reach up to 98.07% when the Br-BBD concentration is 50 mg L -1 in 1.0 M HCl at 25°C. In addition, the adsorption of the mixed-type inhibitor of Br-BBD on Q235 steel surface obey Langmuir adsorption isotherm, which is governed by spontaneous chemisorption mechanism.
研究领域:
材料科学
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化学工程
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DOI
高影响因子
Materials Today Communications
·
2021
·
IF 3.383
Xumin Xu,Hongyu Wei,Mingguang Liu,Laishui zhou,Guozhu Shen,Qin Li,Ghulam Hussain,Fan Yang,Reham Fathi,Haiji Chen,Kostya (Ken) Ostrikov
In recent years, steel corrosion, an issue affecting a trillion-dollar industry, is being addressed with nanotechnology technologies. Small clusters and nanoparticles , as well as numerous molecules, are viable solutions, with carbon quantum dots (CQDs) being among the best and most promising. However, the complexity and duration of the CQDs purification process, as well as a few other issues, limit their practical applications as corrosion inhibitors . Therefore, in this study, a new type of nitrogen-doped CQDs (N-CQDs) with an average size of 2.5 ± 0.8 nm were synthesized via hydrothermal reaction of amino-guanidine and citric acid using a robust purification process. Electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization (PDP) techniques were used to evaluate the new inhibitor's corrosion mitigation effect on Q235 steel in 0.5 M H 2 SO 4 solution. X-ray photoelectronic spectroscopy (XPS) and FTIR analyses were employed for the chemical composition investigation of as-prepared N-CQDs and surface characterization of Q235 steel samples. The analysis of the impedance module and the current density of Q235 steel in the corrosive solution validates the effective protective performance of the inhibitor. The results showed that the maximum inhibition efficiency of 95.3% was achieved at the concentration of 200 mg/L. Moreover, it was found that the formation of the protective layer on the steel samples results from the Physico-chemical adsorption of the inhibitor on the steel surface and follows the Langmuir adsorption isotherm that was also confirmed via XPS. The quantum chemical calculations show that CQD nitrogen doping has an effect on corrosion inhibition performance. Overall, the corrosion inhibition efficiency of the carbon dots inhibitor is higher at the same concentration than that of most other similar inhibitor types.
研究领域:
材料科学
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腐蚀与防护
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纳米技术
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产品关联
DOI
高影响因子
International Journal of Electrochemical Science
·
2023
·
IF 1.5
Mingjun Cui,Yujie Qiang,Wei Wang,Haichao Zhao,Siming Ren
In this work, nitrogen doped carbon dots (NCDs) were prepared with citric acid monohydrate (CA·H 2 O) and ethanolamine (EA) via microwave method. In combination with electrochemical techniques, weight loss and SEM, it is found that nitrogen doping in carbon dots effectively suppresses the corrosion of Q235 carbon steel in HCl solution owing to the presence of pyrrolic N in NCDs. Especially for NCDs (1:10), the optimum inhibition efficiency is about 89% after 1 h of immersion in 0.1 M HCl solution with 500 ppm of concentration. By further calculation, the Δ G ads 0 value for NCDs (1:10) is -26.65 kJ·mol -1 , indicating the adsorption of NCDs on Q235 carbon steel surface involves both chemisorption and physisorption. In addition, NCDs still remain superior corrosion inhibition performance with the prolonged immersion time and ascending temperature.
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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DOI
高影响因子
JOURNAL OF MOLECULAR STRUCTURE
·
2025
·
IF 4.7
Mohammed Mustafa Yousif Modwi,Yafei Liu,Fuyuan Li,Ying Lv,Abdalbagi Ismail,Dafaalla Hassan,Huixia Feng
Herein, the eco-friendly corrosion inhibitor Schiff Bases Based on Chitosan has been successfully synthesized, and its new structure was characterized via Fourier transform infrared spectroscopy (FT-IR) and proton nuclear magnetic resonance ( 1 H NMR). The efficiency of corrosion inhibitors was studied via classic weight loss, electrochemical impedance spectroscopy (EIS), and potentiodynamic polarization (PDP) methods. The studies indicated that the Per/CS corrosion in 1.0 M HCl has mixed-type behavior with inhibition efficiency with 600 mg L -1 reaching 97 % at 25 °C. Thermodynamic calculations, such as the equilibrium constant of adsorption (K ads ) and the free energy of energy of adsorption (ΔG ads ), suggested that Per/CS exhibits a mixed mode of adsorption. The activation energy, enthalpy, and entropy were calculated and discussed. The results indicated the formation of a protective film of Per/CS inhibitor on the Q235 carbon steel surface, which was investigated via various techniques such as scanning electron microscopy (SEM), Water contact angle, and atomic force microscopy. The X-ray photoelectron spectroscopy indicated the existence of Per/CS molecules on the carbon steel surfaces. Quantum chemical calculations, DFT, and Fukui indices were also applied to describe the adsorption mechanism. Adsorption locator and MD simulations were also performed to describe the ability of the Per/CS molecule to adsorb on the Fe (110).
研究领域:
材料科学
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电化学
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量子化学
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产品关联
DOI
高影响因子
MATERIALS AND CORROSION-WERKSTOFFE UND KORROSION
·
2022
·Vol. 73
·期 7
·1153-1162
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IF 1.832
Cunhua Wei,Ge Xu,Jin Yu
A novel triazine derivative, 2, 4-diamino-6-dodecamido-1, 3, 5-triazine (DT), is synthesized by the dehydration condensation of melamine and lauric acid, and its inhibitive performances for the corrosion of Q235 carbon steel in 1 mol/L HCl solution is investigated by electrochemical polarization, electrochemical impedance spectroscopy, scanning electron microscopy, and atomic force microscope. The results reveal that its best inhibition efficiency reaches 96.98% at a concentration of 2.5 g/L. The calculation results of kinetic and thermodynamic parameters indicate that the adsorption of DT on carbon steel surface obeys Langmuir adsorption isotherm with both physical and chemical adsorption. It is demonstrated that long-chain amide (>8C) substituted 1, 3, 5-triazine derivative has the synergistic corrosion inhibition effect of the surface fixation on metal iron and the hydrophobic adsorption layer.
研究领域:
材料科学
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电化学
·
表面工程
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产品关联
DOI
高影响因子
International Journal of Electrochemical Science
·
2023
·
IF 1.5
Hongmei Dong,Lifeng Ding,Boyuan Ran,Yongbo Song,Ruihong Wang,Lu Zhao,Yulan Niu
Developing efficient and eco-friendly corrosion inhibitors to replace traditional toxic and harmful ones is necessary for protecting the ecological environment. Herein, we have developed an eco-friendly drug corrosion inhibitor, Ribavirin (RBVR), which could effectively inhibit Q235 steel corrosion in 1 M HCl solution. EIS results showed that RBVR slowed down the corrosion rate of steel, and η could reach up to 97.7 % when the concentration of RBVR was only 10 mM. The potentiodynamic polarization curve results indicated that RBVR was a modest mixed-type corrosion inhibitor that could inhibit steel anodic and cathodic reactions. The adsorption isotherm and theoretical calculations revealed that the adsorption of RBVR on the steel surface was in the form of parallel adsorption, which maximized the protection of steel. The adsorption of RBVR molecules on the steel was mainly based on the N and O heteroatoms as the active adsorption centers. A monolayer protective film was formed on the steel surface, which retarded the dissolution of active sites. This work will provide a theoretical basis for developing novel, efficient, eco-friendly organic inhibitors and promoting their industrial application.
研究领域:
材料科学
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腐蚀与防护
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药物化学
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产品关联
DOI
高影响因子
Surfaces and Interfaces
·
2024
·
IF 5.7
Jiajia Cai,Yongjun Li,Zhengxin Cai,Xiangxuan Tang,Zhi Zhang,Jianmin Wang,Qian Xie,Pengyan Zhang,Song Li
Photocathodic protection (PCP) can convert solar energy into protecting marine metallic structures from corrosion. However, the serious photocarrier recombination in the photoanode has hindered the development of the PCP technique. This study reported a feasible approach to construct the heterojunction with a tunable built-in electric field by epitaxially growing CdIn 2 S 4 (CIS) on the surface of WO 3 . The light absorbance, carrier separation, and transportation were found to be strongly dependent on the built-in field, and it would enable not only protection of the 304SS but also retard the corrosion of more vulnerable Q235. Accordingly, the OCP of coupled photoelectrode shifted to -950 and -880 mV Ag/AgCl for 304SS and Q235, and their photocurrent density also reached 100 and 170 μA/cm 2 , respectively. Notably, the PCP performance of anti-corrosion on the 304SS and Q235 was visualized by microscopy, further proving the effectiveness of the photoanode. The underlying mechanisms and different protection capabilities were discussed in detail.
研究领域:
材料科学
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腐蚀与防护
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能源转换
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MOLECULAR LIQUIDS
·
2025
·
IF 5.2
Xiaohui Ren,Wei He,Jinyan Liu,Yuelong Liu,Shenghan Zhou
The corrosion inhibition properties of imidazoline compounds, namely 2-phenylimidazoline (PI), 2-undecylimidazoline (UI), and imidazoline oleate (OI), on Q235 steel in ethanol-gasoline blends (EGBs) were systematically investigated. The effectiveness of these inhibitors was evaluated using macroscopic morphology analysis and electrochemical techniques. Surface characterization was conducted via SEM, AFM, and XPS. Additionally, the corrosion inhibition mechanism of imidazoline molecules on Q235 steel was elucidated through theoretical simulations. The results indicate that imidazoline inhibitors primarily functions by suppressing the anodic reaction, with the process being controlled by charge transfer. At the concentration of PI, UI and OI is 5 × 10 −3 Mol·L −1 , the inhibition efficiency exceeding 90 %. These inhibitors form chemical bonds with the Q235 steel surface, creating an adsorption layer centered around the imidazole heterocyclic ring. PI and OI are adsorbed in parallel, whereas UI is adsorbed vertically to play their anti-corrosion role. Imidazoline compounds are effective corrosion inhibitors that can significantly prevent the corrosion of Q235 steel in ethanol-gasoline blends
研究领域:
材料科学
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腐蚀工程
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电化学
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表面科学
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计算化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MOLECULAR LIQUIDS
·
2021
·
IF 6.165
Yuanxian Zeng,Lei Kang,Ying Wu,Shan Wan,Bokai Liao,Nan Li,Xingpeng Guo
Melamine modified carbon dots (Me-CDs) was synthesized by hydrothermal method and used as effective corrosion inhibitor for Q235 carbon steel in 3.5 wt% sodium chloride (NaCl) solution. The microstructure and surface properties of Me-CDs were characterized using XRD, FTIR, XPS and TEM. The corrosion inhibition behavior and mechanism of Me-CDs for carbon steel were investigated using weight loss and electrochemical methods, in combination with some surface characterizations (including SEM, AFM and contact angle tester). Results showed that Me-CDs as mixed-type adsorbent inhibitor could effectively prevent carbon steel from corrosion, and the maximum corrosion inhibition efficiency can reach 92.36% at 200 mg/L. The absorption of Me-CDs conformed to Temkin adsorption model, involving both chemisorption and physisorption . Based on the results of characterization analysis, the chemisorption from multiple adsorption centers, physisorption by blocking and barrier effect, and the formation of hydrophobic film on the surface of carbon steel was proposed to clarify the corrosion inhibition mechanism of Me-CDs.
研究领域:
材料科学
·
腐蚀与防护
·
表面化学
✓ 已验证
产品关联
DOI
高影响因子
International Journal of Electrochemical Science
·
2023
·
IF 1.5
Chenxi Yi,Benfeng Zhu
The inhibiting behavior of K 4 P 2 O 7 , C 2 H 5 O 6 P and their mixture on Q235 steel corroding in the simulated stratum water has been investigated by using electrochemical noise (EN) and electrochemical impedance spectroscopy (EIS) techniques. The results show that the physical adsorption of KPP onto Q235 surface at 60 °C is somewhat faster than the chemisorption of HPAA. In the re-plotted energy distribution plot, the difference of the region where the EN energy is mostly accumulated may be adopted to distinguish the chemisorption and physical adsorption of inhibitors. Finally, the variation tendency of the charge transfer resistance obtained by EIS technique is just opposite to that of fractal dimension obtained by EN technique, which may hint that the initial corrosion processes of metals can be in-situ monitored by using EN technique expediently.
研究领域:
材料科学
·
电化学工程
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产品关联
DOI
PubMed
高影响因子
RSC Advances
·
2019
·Vol. 9
·期 52
·30249-30258
·
IF 3.049
Feng Yang,Yu Liu,Tong Liu,Shuan Liu,Haichao Zhao
In this work, a water-soluble host–guest complex containing carboxymethylated beta-cyclodextrin (CM-β-CD) and an aniline trimer (AT) was synthesized. The application of AT–CM-β-CD as an inhibitor for alleviating the corrosion of Q235 carbon steel in 1 M HCl solution was investigated by potentiodynamic polarization and electrochemical impedance spectroscopy (EIS). Results showed that the inhibition efficiency was significantly increased in the presence of AT–CM-β-CD, and the inhibition efficiency was up to 99.2% when the concentration of AT–CM-β-CD was 250 mg L−1. Field emission scanning electron microscopy (SEM) and laser scanning confocal microscopy (LSCM) confirmed that the corrosion inhibitor had excellent corrosion inhibition effects due to the formation of an adsorption film on the surface of Q235 carbon steel. According to the data extracted from the Langmuir adsorption model, AT–CM-β-CD absorption involves both physisorption and chemisorption.
研究领域:
材料科学
·
电化学
·
腐蚀与防护
✓ 已验证
产品关联
DOI
PubMed
高影响因子
LANGMUIR
·
2024
·
IF 3.7
Jiani Xu,Zhongyi He,Liping Xiong,Yinglei Wu,Lei Guo,Lili Li,Renhui Zhang
A high yield of environmentally friendly N,S-codoped (N,S-CDs) and N-doping carbon points (N-CDs) carbon dots was achieved through a biochemical oxidation reaction at room temperature in this study. Acetaldehyde, sodium hydroxide, benzotriazole (BTA), and 2-mercaptobenzimidazole (MB) with a similar structure were used as raw materials. The microstructure and properties of the corrosion inhibitor for Q235 steel were evaluated by various experiments. The results demonstrated enhanced corrosion inhibition rates of the N,S-CDs compared to the N-CDs using electrochemical tests (93.83% vs 77.65%) and weight loss experiments (96.35% vs 91.65%) at 50 mg/L, respectively, compared to the blank material, indicating that N,S codoping can significantly improve the corrosion inhibition effect of carbon dots. The significant improvements were attributed to the formation of dense adsorption films and the hydrophobic properties of N and S-CDs nanoparticles on the steel surface, leading to an effective barrier against corrosion. The findings from this study provide important experimental data for potential industrial applications and hold important practical value in the field of pickling corrosion inhibitors.
研究领域:
材料科学
·
腐蚀与防护
·
工业应用
✓ 已验证
产品关联
DOI
PubMed
高影响因子
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