Sustained-release system based on BTA@MOF-5 for self-healing coating application

Guo, Chengbin; Lian, Yubo; Huang, Chen; Chen, Zhenyu

doi:10.1016/j.colsurfa.2022.130139

Cited by 13 publications

(2 citation statements)

References 45 publications

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“…34 On the other hand, MOFs are attempted to be nanocontainers to load corrosion inhibitors for the self-repairing coatings. 35 46 However, the deficiency of this smart-sensing coating is that different MOFs have to be selected and synthesized for the corrosion detection of diverse metal substrates. Considering that the change of the local pH value is a more general feature of metal corrosion, the corrosion reporting of various metals can be realized by adding a universal pH-responsive fluorescent MOF into the coatings.…”

Section: ■ Introductionmentioning

confidence: 99%

“…Metal–organic frameworks (MOFs), composed of metal ions connected by organic linkers, have received considerable attention in various fields owing to their large specific surface areas, rich active sites, designable frameworks, and great chemical stability. − MOFs can be used as nanofillers to improve the anticorrosion performance of the coatings. − Alipanah et al synthesized MIL-88A(Fe) particles as corrosion-inhibiting fillers to enhance the protective property of the epoxy/polyamide coating . On the other hand, MOFs are attempted to be nanocontainers to load corrosion inhibitors for the self-repairing coatings. − Li et al selected a ZIF-8 nanocontainer with 2-mercaptobenzimidazole loading to prepare the self-repairing epoxy coating . However, the superiorities of MOFs are not fully exploited in the case of only being used as nanofillers or nanocontainers.…”

Section: Introductionmentioning

confidence: 99%

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pH-Responsive Fluorescent Metal–Organic Framework as a Functional Nanofiller for Smart Coatings

Fan

et al. 2023

Inorg. Chem.

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A zirconium-based UiO-type UiO-66-(OH) 2 metal−organic framework@carbon dot composite (Zr-MOF@ CD) is synthesized through a facile solvent-free thermal method. The Zr-MOF@CD exhibits pH-responsive fluorescence behavior, which emits blue fluorescence for pH < 9 at an emission wavelength of 470 nm. At pH > 9, the fluorescence color turns from blue to yellow, with the emission behavior at 535 nm. Zr-MOF@CDs can serve as functional nanofillers in the epoxy coating for the fabrication of a smart coating, which can realize coating damage warning and metal corrosion reporting. The blue fluorescence can be observed in the area of coating damage with just a minor scratch. Once the scratch is severe enough to expose the metal substrate, the cathodic reaction of oxygen reduction in the corrosion galvanic cell causes an increased pH, where the emission of yellow fluorescence can be identified. The stable fluorescence response is free from the influence of concentration, time, temperature, and the interfering substance. Zr-MOF@CDs can also serve as nanocontainers for loading with the corrosion inhibitor and realizing the repairing of metal corrosion. The development of the smart coating with dual functions of autonomous reporting and repairing holds great potential to improve the lifetime of metals in various industrial applications.

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Section: ■ Introductionmentioning

confidence: 99%