Development of self-healing sol-gel anticorrosion coating with pH-responsive 1H-benzotriazole-inbuilt zeolitic imidazolate framework decorated with silica shell

Huang, Yi; Zhao, Chenyang; Li, Yue; Wang, Chen; Shen, Tao; Cheng, Di; Yang, Hui

doi:10.1016/j.surfcoat.2023.129622

Cited by 21 publications

(2 citation statements)

References 58 publications

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“…The results revealed that BTA-ZIF-8@SiO 2 can effectively improve the anticorrosion performance of the coating and show excellent self-repairing performance. This may be due to the enhanced passive protection, improved compatibility of the nanocontainer with the sol-gel matrix, and the synergistic effect of the inhibitor film formed on the metal surface [69].…”

Section: Research Progressmentioning

confidence: 99%

Development and Application of Intelligent Coating Technology: A Review

Chen,

Zheng,

Zhou

et al. 2024

Coatings

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Coating technology, as a part of surface engineering, has shown remarkable potential in future industrial applications. With the continuous development and improvement of coating technology, coatings have gradually become an indispensable part of industrial manufacturing, possessing various excellent properties and characteristics, such as superhydrophobicity and self-cleaning, enhanced biological antibacterial properties, and improved corrosion resistance. Intelligent coatings are not only rigid barriers between substrates and the environment but also coatings designed to respond to the environment and improve coating life or achieve certain special functions through this response. Biomimetics is a discipline that studies the structure, function, and behavior of living organisms and applies them to engineering design. Combining bionics with intelligent coating materials can not only improve the performance and functionality of intelligent coatings but also create more intelligent coating materials. This paper includes advanced superhydrophobic intelligent coatings, anticorrosion intelligent coatings, biological antibacterial intelligent coatings, and other intelligent coatings with specific functions. We also provide a detailed overview of the preparation methods and technologies of various representative intelligent coatings, as well as their properties and applications, which will offer some valuable references for the development direction of future intelligent coatings.

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Section: Research Progressmentioning

confidence: 99%

Development and Application of Intelligent Coating Technology: A Review

Chen,

Zheng,

Zhou

et al. 2024

Coatings

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“…In an attempt to improve the corrosion resistance of zinc, coating its surface with protective films of different natures is also a promising solution. Inorganic compounds [7][8][9][10], but also synthetic [11,12] and natural polymers [13][14][15][16] are used to modify the zinc surface by using different techniques such as sol-gel [7][8][9], electrodeposition [17], layer-by-layer deposition [18], electropolymerization [19], etc.…”

Section: Introductionmentioning

confidence: 99%

Influence of pH on the Inhibiting Characteristics of Cresol Red Incorporated in Chitosan Coatings on Zinc

Buier,

Szabó,

Katona

et al. 2023

Metals

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The present work focuses on the investigation of protective coatings produced on zinc from chitosan (Chit) and an anionic dye, namely cresol red. Cresol red (CR) fulfills the basic requirements to be used as a corrosion inhibitor because it possesses a relatively high molecular weight and includes in its structure oxygen and sulfur atoms as well as aromatic rings. Moreover, it is an anionic compound that can interact with positively charged chitosan to produce reinforced coatings for zinc anti-corrosion protection. The influence of cresol red as a possible corrosion inhibitor for zinc substrates was investigated either in solution or incorporated in Chit coatings. Two preparation methods for the coatings were used: (i) Chit coating impregnation by immersion in the CR solution after Chit deposition on Zn, and (ii) chitosan mixing with the CR solution before applying the dip-coating technique. Potentiodynamic polarization curves were used to determine the kinetic parameters of the corrosion process. Long-term measurements were carried out in wet/dry cyclic conditions by using electrochemical impedance spectroscopy. EIS measurements recorded in 0.2 g/L Na2SO4 at pH = 7 show an important increase in the impedance of the coatings occurring from the first until the fifty-fifth day in a row, in dry–wet cycles. This increase is due to the beneficial effect of CR incorporated in Chitosan and could be, at least partially, related to a consolidation of the Chit coating structure in the presence of CR by crosslinking between Chit and CR molecules. The structure of the coatings was studied, and the interactions between chitosan and cresol red were put into evidence by using FT-IR spectroscopy. Adhesion and wettability measurements were also carried out. The adhesion of Chit incorporating CR on Zn was better than that on glass substrates and reached ~99.99%, suggesting a better affinity of the chitosan coating towards the Zn substrate due to the existence of ZnO on the substrate surface. All the results show that CR could be used on zinc as a corrosion inhibitor incorporated in chitosan at basic pHs, but without taking advantage of its pH-indicating properties, which are lost due to the interactions occurring between the positively charged biopolymer and the negatively charged dye molecule. The preparation method of Chit coating impregnation with CR by immersion in the solution after deposition on Zn led to poorer results than the method in which chitosan was previously mixed with CR before applying the dip-coating technique.

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