MXene and Polymer Collision: Sparking the Future of High‐Performance Multifunctional Coatings

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Aug. 8, 2024

Abstract The development of nanomaterials is crucial to upgrading modern industry. MXene nanosheets have attracted significant attention due their superb resistance permeation, diverse surface chemical properties, impressive mechanical and metal‐like electrical thermal conductivity, etc., providing unique advantages in various technical fields. When are combined with polymers form functional coatings, applications span multiple fields, including anticorrosion, wear resistance, flame‐retardancy, electromagnetic interference (EMI) shielding, de‐icing. This review, conjunction MXene's barrier property, lubricity, stability, photothermal conversion discusses detail the MXene‐based polymer coatings. Additionally, it examines dispersion interaction within coatings role functionalized polymers. Finally, based on current research status emerging needs, challenges future opportunities a targeted manner discussed. review aims summarize existing results put forward an objective fair point view, constructive reference for nanofunctional

Language: Английский

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Accelerating Macroscale Superlubricity through Carbon Quantum Dots on Engineering Steel Surfaces

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 34(9)

Published: Nov. 20, 2023

Abstract Macroscale superlubricity on engineering steel surfaces offers a promising solution for minimizing friction and wear in applications. However, achieving typically requires long running‐in period, which may result significant the pair. Herein, new lubricant with superlubricating properties is rationally designed by using polyethylene glycol (PEG) critic acid (CA) under complexing effect period of about 800 s. Importantly, introduction carbon quantum dots (CQDs) obtained from pyrolysis CA into PEG aqueous shortens macroscale ( µ ≈ 0.005) between steel/steel contact to 44 The corresponding rate (1.15 × 10 −7 mm 3 N −1 m ) disk reduced 77% due shorter time. Furthermore, surface analysis combined molecular dynamics simulations demonstrates that CQDs easily adsorb pair, forming film reduces interaction energy molecules substrate. This work provides insights lubrication mechanism contributes design liquid superlubricants short periods low rates surfaces.

Language: Английский

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Amide‐Engineered Metal–Organic Porous Liquids Toward Enhanced CO₂ Photoreduction Performance

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(19)

Published: Jan. 17, 2024

Abstract The development of alternative catalytic systems toward high‐performance CO 2 photoreduction is considered to be a promising approach address the future energy demand and reduce emissions. However, molecules are thermodynamically stable in nature, thus adsorption activation on surface catalysts key factors determine conversion efficiency. Herein, porous liquid (NH ‐UIO‐66 PL) demonstrated for efficiently facilitating by modification metal–organic framework ‐UIO‐66) with ionic via amide bonds. CdS/NH PL exhibits ‐to‐CO yield 71.37 µmol g −1 h selectivity 100%. Experiments theoretical calculations show that introduced moieties not only enriched electron density at Zr 4+ active sites but also stabilize * COOH intermediate. achievements provide an effective strategy frameworks catalysis.

Language: Английский

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Bioinspired multi-crosslinking and solid–liquid composite lubricating MXene/PVA hydrogel based on salting out effect

Chemical Engineering Journal, Journal Year: 2023, Volume and Issue: 476, P. 146848 - 146848

Published: Oct. 21, 2023

Language: Английский

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Unveiling the tribological potential of MXenes-current understanding and future perspectives

Advances in Colloid and Interface Science, Journal Year: 2023, Volume and Issue: 321, P. 103021 - 103021

Published: Oct. 16, 2023

Language: Английский

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Multifunctional liquid-like magnetic nanofluids mediated coating with anticorrosion and self-healing performance

Journal of Colloid and Interface Science, Journal Year: 2023, Volume and Issue: 654, P. 25 - 35

Published: Sept. 30, 2023

Language: Английский

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Versatile MXene Gels Assisted by Brief and Low-Strength Centrifugation

Nano-Micro Letters, Journal Year: 2024, Volume and Issue: 16(1)

Published: Jan. 22, 2024

Abstract Due to the mutual repulsion between their hydrophilic surface terminations and high energy facilitating random restacking, 2D MXene nanosheets usually cannot self-assemble into 3D macroscopic gels with various applications in absence of proper linking agents. In this work, a rapid spontaneous gelation Ti 3 C 2 T x very low dispersion concentration 0.5 mg mL −1 multifunctional architectures under moderate centrifugation is illustrated. The as-prepared exhibit reconfigurable internal structures tunable rheological, tribological, electrochemical, infrared-emissive photothermal-conversion properties based on pH-induced changes chemistry nanosheets. By adopting gel optimized pH value, lubrication, exceptional specific capacitances (~ 635 ~ 408 F g at 5 100 mV s , respectively), long-term capacitance retention 96.7% after 10,000 cycles) high-precision screen- or extrusion-printing different high-resolution anticounterfeiting patterns can be achieved, thus displaying extensive potential fields semi-solid controllable devices, supercapacitors, information encryption infrared camouflaging.

Language: Английский

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Surface-Modified LDH Nanosheets with High Dispersibility in Oil for Friction and Wear Reduction

ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: 16(4), P. 5316 - 5325

Published: Jan. 16, 2024

Surface and interfacial engineering of nanomaterials is essential for improving dispersion stability in liquids. In this study, we report that oleic acid (OA)- stearic (SA)-functionalized layered double hydroxide (LDH) nanosheets as lubricant additives can achieve high reduce friction wear. LDH a typical structure, OA SA are long-chain organic molecules not only compatible with base oils but also act friction-reducing agents. The were branched onto ZnMgAl using dehydration condensation between the exposed OH groups on surface COOH molecules. Compared pristine LDH, OA-ZnMgAl SA-ZnMgAl was significantly improved. surface-modified exhibited superior tribological properties great due to synergistic lubrication effect OA, SA, LDH. Even at an ultralow concentration (0.15 wt %), coefficient wear volume reduced by ∼65 ∼99%, respectively, compared those oil. Due green simple synthesis method excellent properties, surface-functionalized has enormous possibilities future industrial applications.

Language: Английский

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Photothermally responsive and durable polydopamine-modified MXene-PNIPAM hydrogels for smart friction regulation

Tribology International, Journal Year: 2024, Volume and Issue: 193, P. 109435 - 109435

Published: Feb. 16, 2024

Language: Английский

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The strong mechanical anchoring of ZIF-8 nanoparticles on graphene oxide surface to enhance frictional energy dissipation

Tribology International, Journal Year: 2024, Volume and Issue: 192, P. 109303 - 109303

Published: Jan. 17, 2024

Language: Английский

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