A hydrophobic smart coating based on hexagonal boron nitride/metal-organic frameworks for high-performance corrosion protection

Chen, Haidong; Yu, Zongxue; Yang, Guangcheng; Liao, Kexi; Peng, Bokai; Guo, Yuchi; Zhu, Lijuan

doi:10.1016/j.porgcoat.2022.107154

Cited by 13 publications

(4 citation statements)

References 50 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…6 The synthesized mPEG-RAFT (100 mg) and DPA (1.18 mL) were weighed in the reaction tube and 1.5 mL N,N-DMF was added to it to fully dissolve the reactant. The reaction product mPEG−PDPA was synthesized by vacuuming in an oil bath (set at 80 °C) for 24 h. 44,45 DMAEMA monomer and AIBN catalyst (40 mg) were fully dissolved in DMF, and the resulting mixture was introduced into the reaction tube under nitrogen protection; the reaction was conducted in an oil bath (set at 80 °C) for 24 h. The reactants and products were purified by dialysis with deionized water for 48 h and freeze-dried to produce a light-yellow granular solid mPEG−PDPA−PDMAE-MA. 46 2.3.…”

Section: Methodsmentioning

confidence: 99%

Construction of a Multifunctional Upconversion Nanoplatform Based on Autophagy Inhibition and Photodynamic Therapy Combined with Chemotherapy for Antitumor Therapy

Ning,

Wei,

et al. 2024

Mol. Pharmaceutics

View full text Add to dashboard Cite

Inhibition of autophagy increases the sensitivity of tumor cells to radiotherapy and chemotherapy and improves the therapeutic effect on tumors. Recently, photodynamic therapy (PDT) combined with chemotherapy has been proven to further improve the efficiency of cancer treatment. As such, combining autophagy inhibition with PDT and chemotherapy may represent a potentially effective new strategy for cancer treatment. However, currently widely studied autophagy inhibitors inevitably produce various toxic side effects due to their inherent pharmacological activity. To overcome this constraint, in this study, we designed an ideal multifunctional upconversion nanoplatform, UCNP-Ce6-EPI@mPPA + NIR (MUCEN). Control, UCNP-EPI@mPPA (MUE), UCNP-EPI@mPPA + NIR (MUEN), Ce6-EPI@mPPA (MCE), Ce6-EPI@mPPA + NIR (MCEN), and UCNP-Ce6-EPI@mPPA (MUCE) groups were set up separately as controls. Based on a combination of autophagy inhibition and PDT, the average particle size of MUCEN was 197 nm, which can simultaneously achieve the double encapsulation of chlorine e6 (Ce6) and epirubicin (EPI). In vitro tests revealed that MUCE was efficiently endocytosed by 4T1 cells under near-infrared light irradiation. Further, in vivo tests revealed that MUCE dramatically inhibited tumor growth. Immunohistochemistry results indicated that MUCE efficiently increased the expression of autophagy inhibitors p62 and LC3 in tumor tissues. The synergistic effect of autophagy inhibition and PDT with MUCE exhibited superior tumor suppression, providing an innovative approach to cancer treatment.

show abstract

Section: Methodsmentioning

confidence: 99%

Construction of a Multifunctional Upconversion Nanoplatform Based on Autophagy Inhibition and Photodynamic Therapy Combined with Chemotherapy for Antitumor Therapy

Ning,

Wei,

et al. 2024

Mol. Pharmaceutics

View full text Add to dashboard Cite

show abstract

“…Similarly, the role of corrosion inhibitors in the corrosion protection process can also be demonstrated by electrochemical data. For example, the HAp−CD/EP coating maintained a higher level of impedance than the BTA−HAp−CD/EP coating after 30 days of immersion in the Bode diagram, and the Nyquist arc radius of the BTA−HAp−CD/EP coating showed some increase after 14 days of immersion [46].…”

Section: Characterization Of the Composite Coatingsmentioning

confidence: 97%

A High−Performance Anti−Corrosive Epoxy Coating Based on Ultra−Thin Hydroxyapatite Nanosheets with pH−Responsive Functions

Feng,

Zhu,

Chen

et al. 2023

Molecules

Self Cite

View full text Add to dashboard Cite

The changes in the working environment have necessitated greater requirements in terms of the long−term anti−corrosion ability of metal anti−corrosion coatings, and the emergence of intelligent coatings has met this demand. A nanocontainer with a hydrophobic inner cavity and hydrophilic outer cavity called β−cyclodextrin (β−CD) was grafted onto the surface of hydroxyapatite (HAp) with a silane coupling agent, encapsulating benzotriazole (BTA) and embedded in epoxy resin to improve the coating anticorrosion performance. The excellent corrosion resistance of the coating in immersion and scratch experiments was derived from the inert protective layer formed by the reaction of the rapidly released corrosion inhibitor with the corrosion products on the metal surface. After 30 days of immersion experiment, the coating could still maintain the low−frequency impedance value of 6.28 × 107 Ω cm2. In this work, the enhancement of the physical barrier function of HAp nanoparticle and the pH−response function conferred by β−cyclodextrin provided the coating with good passive and active acting abilities in corrosive environments, respectively.

show abstract

“…Generally, the larger impedance modulus at the lowest frequency (Z f = 0.01 Hz, |Z| 0.01 Hz ) reflects the better corrosion protection. 36,37 The Bode impedance and Bodephase angle spectra were exhibited in Figure 5. At the first day of immersion, except for the 1 wt % PEI-BNNSs/WEP composite coating, the |Z| 0.01 Hz values of other coatings were larger than 10 8 ohm•cm 2 , revealing these coatings possessed excellent barrier property for corrosion medium.…”

Section: Stability Of Pei-bnnss Aqueous Dispersionmentioning

confidence: 99%

Mechanism Insights in Anticorrosion Performance of Waterborne Epoxy Coatings Reinforced by PEI-Functionalized Boron Nitride Nanosheets

Wang,

Tang,

Xiang

et al. 2024

Langmuir

View full text Add to dashboard Cite

Functionalized hexagonal boron nitride nanosheets (BNNSs) have arisen as compelling anticorrosive additives, yet the precise mechanism of their corrosion resistance enhancement in coatings remains unclear. Here, polyethylenimine functionalized BNNSs (PEI-BNNSs) with approximately 6–11 layers were prepared through a “one-step” method. Then, the PEI-BNNSs/Waterborne epoxy (WEP) composite coatings were incorporated via the waterborne latex blending method for the anticorrosion of the Q235 substrate. The impedance modulus (|Z|f = 0.01 Hz) of 0.5 wt % PEI-BNNSs/WEP composite coating soaked in 3.5 wt % NaCl solution for 35 days increased by 4 orders of magnitude compared to pure WEP coating, exhibiting exceptional long-term resistance against corrosion. The positron annihilation lifetime spectroscopy and corrosion product analysis demonstrated that the reinforced anticorrosion capabilities are not solely ascribed to the “tortuous path effect” arising from BNNSs impermeability. These mechanisms also encompass the reduction in free volume fraction and radius of the free volume cavities within the composite coating brought about by the PEI molecules. Additionally, the increase in coating adhesion, promoted by PEI, plays an important role in augmenting the barrier properties against corrosive agents. This study provided a full comprehension of the role played by functionalized BNNSs in fortifying the anticorrosion attributes of WEP coatings.

show abstract

A hydrophobic smart coating based on hexagonal boron nitride/metal-organic frameworks for high-performance corrosion protection

Cited by 13 publications

References 50 publications

Construction of a Multifunctional Upconversion Nanoplatform Based on Autophagy Inhibition and Photodynamic Therapy Combined with Chemotherapy for Antitumor Therapy

Construction of a Multifunctional Upconversion Nanoplatform Based on Autophagy Inhibition and Photodynamic Therapy Combined with Chemotherapy for Antitumor Therapy

A High−Performance Anti−Corrosive Epoxy Coating Based on Ultra−Thin Hydroxyapatite Nanosheets with pH−Responsive Functions

Mechanism Insights in Anticorrosion Performance of Waterborne Epoxy Coatings Reinforced by PEI-Functionalized Boron Nitride Nanosheets

Contact Info

Product

Resources

About