MATERIALS AND CORROSION-WERKSTOFFE UND KORROSION
·
2019
·Vol. 70
·期 11
·1964-1976
·
IF 1.458
Jin Li,Daquan Zhang,Kai Zhang,Lixin Gao,Cheng Shi,Donghui Chen,Manhong Huang
The triazole inhibitor of 1-(p-tolylthio)-1H-1,2,3-triazole-4-carboxylic acid (TTC) was synthesized via the Cu(I)-catalyzed azide-alkyne 1,3-dipolar cycloaddition reaction. The self-assembling method was performed to fabricate the self-assembled film of TTC on the copper surface. The electrochemical measurement results indicate that the TTC film can efficiently protect the copper from corrosion in high concentrated industrial cooling water. The protection efficiency of TTC film for copper is 92.2%. Surface characterizations imply that the copper with TTC film after corrosion is covered with multiple protective layers. It probably contains Cu(I) and Cu(II) complexes mixed with nitrogenous compound, Cl − and SO 4 2− . The result of quantum chemical calculation shows that the superior performance of TTC film is related to the adsorption of TTC molecules on copper surface horizontally. This kind of adsorption is mainly achieved via the adsorption centers of triazole ring and O atoms in TTC molecule.
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
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2022
·
IF 5.518
Yeyin Tao,Xingyun Chen,Shusen Peng,Yongcun Ma
Self-assembled organothiol is a well-known process to endow specific protective properties and usually involves passive incubation. Researchers have recently confirmed that the potential-assisted method is more selective and faster than the passive method. This paper provides an original and promising approach for Cu protection by 2-mercaptobenzobthiazole (MBT) assembled film prepared from an aqueous solution within minutes under potential control. Electrochemical studies, salt spray tests, and XPS highlight and confirm the benefits of this method to result in film features, organic solvent-free, and considerable savings of preparation time. Experimental results also demonstrate that the substrate potential exerts a significant effect on the quality of MBT film. The effectiveness of negative potential in MBT film formation can be attributed to two aspects: first, it can inhibit the oxidation of Cu metal to Cu(II) in the aqueous solution, and second, it can make MBT molecule bond to Cu mainly through forming thiolate Cu-S bond with its exocyclic S atom.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
·
2020
·Vol. 22
·期 8
·4592-4601
·
IF 3.43
Li Feng,Xiaolei Ren,Yangyang Feng,Bochuan Tan,Shengtao Zhang,Wenpo Li,Jie Liu
In order to explore the effects of the structures of organic molecules on their performance and develop high-efficiency self-assembly monolayers (SAMs), two heterocycle-based indole compounds, namely FYBI and TYBI, have been synthesized by a simple route. Herein, we show that FYBI and TYBI can effectively self-assemble on a copper surface and form strong anti-corrosive monolayers to protect copper in acid medium. The compositions, morphologies, and thicknesses of the SAMs have been investigated by XPS, FTIR, SEM and ellipsometry analyses. The optimal self-assembly conditions and inhibition performance of the SAMs with O- or S-heterocycles have been studied by electrochemical tests. According to the results, TYBI displays more powerful inhibition performance than FYBI. Furthermore, the high-resolution XPS and quantum calculation results reveal that the S-heterocycle indole (TYBI) can readily donate electrons to the empty d orbital of Cu and form more robust, hydrophobic, and anti-corrosive SAMs than the O-heterocycle indole (FYBI). The inhibited corrosion is achieved by inhibiting the generation of Cu2+. This systematic study on the performance of various heterocycle-based organic compounds gives a fresh perspective for forming SAMs with certain characteristics, such as anti-corrosion ability or super-hydrophobicity.
研究领域:
材料科学
·
腐蚀与防护
·
量子化学
✓ 已验证
DOI
PubMed
高影响因子
ACS Sustainable Chemistry & Engineering
·
2025
·
IF 7.3
Wenling Wu,Xuan Zhang,Anding Shao,Gang Zhen,Yang Cheng,Xiangfei Wang,Jianfeng Zhu,Hongjie Luo
The corrosion of ancient bronze relics and protection measures after excavation are of great importance to the study of historical and cultural heritage. At present, the bionic superhydrophobic surface anticorrosive coating is one of the main anticorrosive measures of bronze cultural relics. It aims to construct a barrier to prevent the contact between corrosive media and bronze to reduce the invasion of corrosive media. However, due to structural defects such as micropores in a single organic coating, corrosive media (O2, Cl–, and H2O) can penetrate the coating to the metal matrix. Nanomaterials such as MXenes and metal–organic frameworks (MOFs) can fill structural defects such as microholes and microcracks of the coating, thereby improving the density of the coating. Therefore, to improve the performance of organic waterborne polyurethane (WPU) coatings with good chemical protection, nanomaterial ZIF-8/Ti3C2Tx was introduced based on the organic–inorganic hybrid theory. Finally, the coating was modified by 1H,1H,2H,2H-perfluorodecyltriethoxysilane, and the organic–inorganic composite coating was prepared. Characterizations of the composite coating were performed via Fourier transform infrared spectroscopy, X-ray diffraction, Brunauer–Emmett–Teller method, field-emission scanning electron microscopy/energy-dispersive X-ray spectroscopy, and X-ray photoelectron spectroscopy. Colorimetric measurements and reversibility experiments of the coating were also evidenced. According to the electrochemical impedance spectroscopy assessments, the |Z|0.01 Hz value of the F-WPU@ZIF-8/Ti3C2Tx composite coating in a 3.5 wt % NaCl solution, which was higher compared to other composite coatings. Moreover, the icorr value of the F-WPU@ZIF-8/Ti3C2Tx (3.344 × 10–6 A cm–2) composite coating is reduced by 2 orders of magnitude compared with F-WPU@ZIF-8 and F-WPU@Ti3C2Tx coatings. As a result, this organic–inorganic F-WPU@ZIF-8/Ti3C2Tx composite coating has good anticorrosion properties to bronze without causing an obvious color difference change and has potential application prospects in various metal material fields.
研究领域:
材料科学
·
文物保护
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
SURFACE & COATINGS TECHNOLOGY
·
2012
·
IF 1.867
Shusen Peng,Zhixiang Zeng,Wenjie Zhao,He Li,Qunji Xue,Xuedong Wu
In this paper, we try to employ a method of a combination of epoxy functionalized silica sol (ESol) and thiourea (TUA) to obtain a coating of excellent anticorrosion effect on copper. In order to compare the anticorrosion ability of the ESol + TUA coating with other coatings, the samples of ESol and ESol with diethylenetriamine (ESol + DETA) coatings have also been prepared. We use a variety of corresponding methods to study the properties of ESol with and without adding DETA and TUA. Aqueous contact angle analysis is used to evaluate the wetting properties of these sol–gel coatings. Scanning electron microscopy (SEM) is used to observe the surface morphology of these coatings and their cross sections. The anticorrosion ability of these coatings is evaluated by electrochemical methods and salt spray tests . The results show that ESol + TUA coating has the best anticorrosion ability. This is because adding TUA improves the physical barrier effect due to the denser coating compared to the regular ESol coating; in addition, it improves the adhesion between the coating and copper surface.
研究领域:
材料科学
·
腐蚀与防护
✓ 已验证
产品关联
DOI
高影响因子
ANTI-CORROSION METHODS AND MATERIALS
·
2020
·Vol. 67
·期 3
·295-304
·
IF 1.196
Hao Zhou,Kai Zhang,Lin Zhang,Jiamin Lu,Jin Li,Daquan Zhang,Lixin Gao
Purpose The authors have prepared the triazole film on copper surface by click reaction and explored its inhibition mechanism. Design/methodology/approach The protective film is assembled by immersing bronze in solution containing p -toluenesulfonyl azide (TA) and propiolic acid (PA). Findings Fourier transform infrared spectroscopy (FT-IR) indicates that triazole (TTP) film was formed on bronze surface via click chemistry reaction between TA and PA. It shows TTP film has a good protection for bronze in the atmospheric environment simulation solution. Quantum chemical calculation (QC) and molecule dynamics simulation suggests TTP molecule adsorbs on bronze surface via N and O. Originality/value This is beneficial to develop the corrosion inhibitors for the corroded copper alloys.
研究领域:
材料科学
·
腐蚀防护
·
表面化学
·
文化遗产保护
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）