A smart-sensing coating based on dual-emission fluorescent Zr-MOF composite for autonomous warning of coating damage and aluminum corrosion

Fan, Dehong; Liu, Xiaobang; Qi, Kai; Chen, Zhenyu; Qiu, Yubing; Liao, Bokai; Guo, Xingpeng

doi:10.1016/j.porgcoat.2022.107150

Cited by 6 publications

(5 citation statements)

References 37 publications

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“…The resulting 0D/1D or 0D/2D heterogeneous structure has a beneficial impact on ORR performance. 43–45…”

Section: Morphological Structure and Chemical Compositions Of Mdcnmmentioning

confidence: 99%

“…The resulting 0D/1D or 0D/2D heterogeneous structure has a beneficial impact on ORR performance. [43][44][45] 2.1.2 1D structure. The exceptional physicochemical properties exhibited by 1D carbon materials, including carbon nanorods, carbon nanowires, and CNTs, endow them with a competitive advantage as catalysts in electrochemistry.…”

Section: Morphology Design and Constructionmentioning

confidence: 99%

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Structural and compositional analysis of MOF-derived carbon nanomaterials for the oxygen reduction reaction

Zhang,

Xu,

Zhang

et al. 2024

Chem. Commun.

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“…The resulting 0D/1D or 0D/2D heterogeneous structure has a beneficial impact on ORR performance. 43–45…”

Section: Morphological Structure and Chemical Compositions Of Mdcnmmentioning

confidence: 99%

Section: Morphology Design and Constructionmentioning

confidence: 99%

Structural and compositional analysis of MOF-derived carbon nanomaterials for the oxygen reduction reaction

Zhang,

Xu,

Zhang

et al. 2024

Chem. Commun.

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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%

“…Among the large family of MOFs, owing to the rich sources of luminescence and energy transfer processes, fluorescent MOFs have received much attention for fluorescence sensing of metal ions and pH. − Since two important features of metal corrosion are the production of metal ions and the change of local pH value, fluorescent MOFs show great potential for the detection of coating damage and metal corrosion. In our previous work, a dual-emission fluorescent zirconium metal–organic framework/rhodamine B nanocomposite as the indicator was incorporated into the commercial epoxy resin for the fabrication of a smart-sensing coating, which can autonomously detect and distinguish the damage of surface coating and the corrosion of the substrate metal aluminum, respectively . 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.…”

Section: Introductionmentioning

confidence: 99%

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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“…However, the self-healing ability of the LDH film can diminish over time due to the erosion caused by harsh conditions. This can significantly weaken the protective ability of the coatings, ultimately leading to the corrosion of the metal substrates [14]. Generally, the initial stage of corrosion is invisible to the naked eye.…”

Section: Introductionmentioning

confidence: 99%

LDH-Based “Smart” Films for Corrosion Sensing and Protection

et al. 2023

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In a “smart” corrosion-protective coating system, both the active anti-corrosion and the early corrosion detection of underlying metals are highly required. It is practical significant to develop materials that possess self-detecting of the early local corrosion and self-healing of coating defects simultaneously. The organic compound 8-hydroxyquinoline (8HQ) is an effective inhibitor and a fluorescent sensor probe for corrosion of aluminum alloy. Therefore, a layer double hydroxide (LDH) nanocontainer film loaded with the 8HQ was developed for the active corrosion protection purpose of aluminum alloy AA2024. In corrosive environments, the 8HQ are released from LDH film to inhibit the corrosion process, leading to the loss of the complexation with Al3+ ions in LDH laminates, thus turning off fluorescence. Results show that the LDH film loaded with 8HQ composites can improve the anti-corrosion performance of the film by releasing corrosion inhibitors on demand. Simultaneously, due to the complexation of 8HQ and Al3+ ions, the LDH film is fluorescent at the initial stage under ultraviolet light, and then becomes non-fluorescent at the corrosion sites, indicating the corrosion evolution process of the coating. The 8HQ-loaded LDH film with self-healing and self-detecting dual functions provides promising opportunities for the effective corrosion protection of aluminum alloy due to its “smart” and multifunctional properties.

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A smart-sensing coating based on dual-emission fluorescent Zr-MOF composite for autonomous warning of coating damage and aluminum corrosion

Cited by 6 publications

References 37 publications

Structural and compositional analysis of MOF-derived carbon nanomaterials for the oxygen reduction reaction

Structural and compositional analysis of MOF-derived carbon nanomaterials for the oxygen reduction reaction

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

LDH-Based “Smart” Films for Corrosion Sensing and Protection

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