Plasmonic Ti₃C₂T_x MXene Enables Highly Efficient Photothermal Conversion for Healable and Transparent Wearable Device

Abstract

Skin-mountable and transparent devices are highly desired for next-generation electronic applications but are susceptible to unexpected ruptures or undesired scratches, which can drastically reduce the device lifetime. Developing wearable and transparent materials with healable function that can recover their original functionality after mechanical damage under mild and noninvasive repairing operation is thus imperative. Herein, we demonstrate that the incorporation of ultrasmall quantities of plasmonic silver nanoparticle (AgNP)@MXene nanosheet hybrids to serve as photothermal fillers in waterborne elastic polyurethane enables high transparency as well as effective light-triggered healing capabilities for wearable composite coatings. The AgNP@MXene hybrid functions as a highly effective photon captor, energy transformer, and molecular heater due to the amalgamation of (1) ultrahigh photothermal conversion efficiency, high thermal conductivity, and structural properties of MXene, (2) the outstanding plasmonic effect of AgNPs, and (3) the synergistic effects from their hybrids. The resulting wearable composite coating with ultralow loading of plasmonic AgNP@MXene hybrids (0.08 wt % or 0.024 vol %) can produce a significant temperature increase of ∼111 ± 2.6 °C after the application of 600 mW cm–2 light irradiation for 5 min, while maintaining a high optical transmittance of ∼83% at a thickness of ∼60 μm. This local temperature increase can rapidly heal the mechanical damage to the composite coating, with a healing efficiency above 97%.

Detection of Hydrazine at MXene/ZIF‐8 Nanocomposite Modified Electrode†

“…Ti 3 C 2 T x was synthesized according to previous reports. [ 57 ] Briefly, 1 g of LiF was dissolved in 20 mL of 9 mol·L –1 HCl in a 50 mL polypropylene bottle. The mixture was stirred for 30 min to ensure that the LiF powder was completely dissolved in the HCl solution.…”

A Facile, High‐Yield, and Freeze‐and‐Thaw‐Assisted Approach to Fabricate MXene with Plentiful Wrinkles and Its Application in On‐Chip Micro‐Supercapacitors

“…MXene, an intriguing member of 2D nanomaterial family, is endowed with the amalgamation of superior electrical conductivity, large specific surface area, and hydrophilic surfaces, and has been widely used in Li‐ion batteries, electrochemical storage systems, electromagnetic interference shielding, electrocatalysts, photo‐to‐thermal conversion, etc. Up to now, over 20 species of 2D MXenes have been reported .…”

Bioinspired nervous signal transmission system based on two-dimensional laminar nanofluidics: From electronics to ionics

“…S4 ). This property is introduced by the serious oxidizing synthesizing procedure ( 30 , 31 ) of MXene, which can be further verified by the stability of zeta potential. Pure MXene dispersion liquid exhibited ultimately minus zeta potential.…”