Porous 2D Ti3C2 MXene nanosheets sandwiched between imine-based covalent organic frameworks (COFs) for excellent corrosion protective coatings

Najmi, Parisa; Keshmiri, Navid; Ramezanzadeh, Mohammad; Ramezanzadeh, Bahram; Arjmand, Mohammad

doi:10.1016/j.cej.2022.141001

Cited by 37 publications

(7 citation statements)

References 56 publications

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“…The changes in both Tafel’s anodic and cathodic slopes represent the mixed corrosion inhibition by PDA and BTA in UG-BP, which can be adsorbed on electrodes to delay the corrosion process. Besides, the anodic Tafel slope has been greatly increased, indicating that anodic protection predominantly controls the metal corrosion. − It means that the adsorption of inhibitor in the anodic region has been more effective compared to that in the cathodic areas, as reported in previous studies . The corresponding inhibition efficiencies of UG-BP and RG-BP are calculated as 66.02 and 45.10%.…”

Section: Resultsmentioning

confidence: 52%

Engineering Active-Site-Induced Homogeneous Growth of Polydopamine Nanocontainers on Loading-Enhanced Ultrathin Graphene for Smart Self-Healing Anticorrosion Coatings

Chen

Jin

Zhang

et al. 2023

ACS Appl. Mater. Interfaces

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Engineering nanocontainers with encapsulated inhibitors onto graphene has been an emerging technology for developing self-healing anticorrosion coatings. However, the loading contents of inhibitors are commonly limited by inhomogeneous nanostructures of graphene platforms. Here, we propose an activation-induced ultrathin graphene platform (UG-BP) with the homogeneous growth of polydopamine (PDA) nanocontainers encapsulated with benzotriazole (BTA). Ultrathin graphene prepared by catalytic exfoliation and etching activation provides an ideal platform with an ultrahigh specific surface area (1646.8 m 2 /g) and homogeneous active sites for the growth of PDA nanocontainers, which achieves a high loading content of inhibitors (40 wt %). The obtained UG-BP platform exhibits pH-sensitive corrosion inhibition effects due to its charged groups. The epoxy/UG-BP coating possesses integrated properties of enhanced mechanical properties (>94%), efficient pH-sensitive self-healing behaviors (98.5% healing efficiency over 7 days), and excellent anticorrosion performance (4.21 × 10 9 Ω•cm 2 over 60 days), which stands out from previous related works. Moreover, the interfacial anticorrosion mechanism of UG-BP is revealed in detail, which can inhibit the oxidation of Fe 2+ and promote the passivation of corrosion products by a dehydration process. This work provides a universal activation-induced strategy for developing loading-enhanced and tailor-made graphene platforms in extended smart systems and demonstrates a promising smart self-healing coating for advanced anticorrosion applications.

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Section: Resultsmentioning

confidence: 52%

Engineering Active-Site-Induced Homogeneous Growth of Polydopamine Nanocontainers on Loading-Enhanced Ultrathin Graphene for Smart Self-Healing Anticorrosion Coatings

Chen

Jin

Zhang

et al. 2023

ACS Appl. Mater. Interfaces

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“…The increments of anodic and cathodic Tafel slopes indicated the mixed corrosion protection brought by the APU coating . The polarization reaction between the substrate and the solution was as follows: The results of the polarization curves demonstrated that the randomly dispersed APU-MX had worse corrosion resistance than that of pure APU with a decrease of the anodic slope, inferring that the addition of MXene caused a “corrosion promotion” phenomenon . The possible reason was that the poor compatibility between MXene and resin led to the formation of MXene agglomerates.…”

Section: Results and Discussionmentioning

confidence: 99%

“…The results of the polarization curves demonstrated that the randomly dispersed APU-MX had worse corrosion resistance than that of pure APU with a decrease of the anodic slope, inferring that the addition of MXene caused a "corrosion promotion" phenomenon. 71 The possible reason was that the poor compatibility between MXene and resin led to the formation of MXene agglomerates. The current generated by the electrochemical anodic reaction of the corrosion in the coating was accelerated by the MXene/MXene linkage within the clusters, which facilitated the corrosion process.…”

Section: Anticorrosion Performancesmentioning

confidence: 99%

Superior Anticorrosion Performance of Well-Dispersed MXene-Polymer Composite Coatings Enabled by Covalent Modification and Ambient Electron-Beam Curing

Zhang

Chen

et al. 2023

ACS Appl. Mater. Interfaces

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MXene-reinforced composite coatings have recently shown promise for metal anticorrosion due to their large aspect ratio and antipermeability; however, the challenges of the poor dispersion, oxidation, and sedimentation of MXene nanofillers in a resin matrix that are often encountered in the existing curing methods have greatly limited practical applications. Herein, we reported an efficient, ambient, and solvent-free electron beam (EB) curing technology to fabricate PDMS@MXene filled acrylatepolyurethane (APU) coatings for anticorrosion of 2024 Al alloy, a common aerospace structural material. We showed that the dispersion of MXene nanoflakes modified by PDMS-OH was dramatically improved in EB-cured resin and enhanced the water resistance through the additional water-repellent groups of PDMS-OH. Moreover, the controllable irradiation-induced polymerization enabled a unique high-density cross-linked network, presenting a large physical barrier against corrosive media. The newly developed APU-PDMS@MX 1 coatings achieved excellent corrosionresistance with the highest protection efficiency of 99.9957%. The coating filled with uniformly distributed PDMS@MXene promoted the corrosion potential, corrosion current density, and corrosion rate to be −0.14 V, 1.49 × 10 −9 A/cm 2 , and 0.0004 mm/ year, respectively, and the impedance modulus was increased by 1−2 orders of magnitude compared to that of APU-PDMS coating. This work combining 2D material with EB curing technology broadens the avenue for designing and fabricating composite coatings for metal corrosion protection.

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“…Consequently, by augmenting the toughness and resistance of the matrix material, the load‐bearing capacity of the composite material can be increased. In recent years, there has been significant research and investigation into nanomodified composite materials, primarily because of their exceptional mechanical properties 31–35 . The studies primarily focus on enhancing the fundamental mechanical properties of aramid materials through the addition of graphene 36–38 .…”

Section: Introductionmentioning

confidence: 99%

“…In recent years, there has been significant research and investigation into nanomodified composite materials, primarily because of their exceptional mechanical properties. [31][32][33][34][35] The studies primarily focus on enhancing the fundamental mechanical properties of aramid materials through the addition of graphene. [36][37][38] Various approaches have been developed to effectively functionalize the surface of graphene, aiming to increase interactions between the matrix and fibers, as well as improve material characteristics.…”

Section: Introductionmentioning

confidence: 99%

The effects of graphene oxide addition on low velocity impact performance of aramid fiber reinforced epoxy composites

Azimpour‐Shishevan,

Mohtadi‐Bonab,

Rahmatinejad

2023

J of Applied Polymer Sci

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In this study, the impact of incorporating graphene oxide (GO) nanoparticles into the matrix of aramid fiber reinforced polymer (AFRP) composites was investigated. The GO nanoparticles were dispersed in the AFRP matrix at three different weight percentages: 0.1%, 0.3%, and 0.5%. The fabrication of the GO dispersed AFRP nanocomposites was achieved using the vacuum assisted resin infusion molding (VARIM) method, and the AFRP plates were cut using a water jet. The sectioned specimens of the fabricated nanocomposites were subjected to low velocity impact tests. The effects of introducing GO nanoparticles at different percentages were evaluated by analyzing the contact force, deflection, maximum absorbed energy versus time and contact force versus deflection curves. Finally, the key parameters of low velocity impact, including contact force, deflection, and maximum absorbed energy, were compared for the different fabricated AFRP nanocomposites. Based on the results, the AFRP composite with 0.3 wt.% of GO nanoparticles exhibited the best performance under low velocity impact loading conditions. However, the agglomeration of nanoparticles became a significant challenge when higher percentages of GO nanoparticles were added to the composite structure. The findings highlight the importance of determining the optimal percentage of nano materials for incorporation into composite structures.

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Porous 2D Ti3C2 MXene nanosheets sandwiched between imine-based covalent organic frameworks (COFs) for excellent corrosion protective coatings

Cited by 37 publications

References 56 publications

Engineering Active-Site-Induced Homogeneous Growth of Polydopamine Nanocontainers on Loading-Enhanced Ultrathin Graphene for Smart Self-Healing Anticorrosion Coatings

Engineering Active-Site-Induced Homogeneous Growth of Polydopamine Nanocontainers on Loading-Enhanced Ultrathin Graphene for Smart Self-Healing Anticorrosion Coatings

Superior Anticorrosion Performance of Well-Dispersed MXene-Polymer Composite Coatings Enabled by Covalent Modification and Ambient Electron-Beam Curing

The effects of graphene oxide addition on low velocity impact performance of aramid fiber reinforced epoxy composites

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