Asymmetric Superhydrophobic Textiles for Electromagnetic Interference Shielding, Photothermal Conversion, and Solar Water Evaporation

Abstract

Flexible and multifunctional textiles have potential applications in self-cleaning and portable electronic product applications, but the current problem that needs to be solved is to maintain their inherent breathability and flexibility while expanding other functional applications. Herein, we adopt the layer-by-layer assembly method to develop a multifunctional textile with superior asymmetric superhydrophobicity, excellent electromagnetic interference (EMI) shielding, outstanding photothermal conversion, and solar water evaporation. The synergistic effect of SiO 2 nanoparticles/poly(dimethylsiloxane) (PDMS) and 1H,1H,2H,2H-perfluorooctyltriethoxysilane (PFOTES) endows the textile with a water contact angle of 160°. MXene provides high conductivity (1200 S/m) and EMI shielding effects (36 dB) for multifunctional textiles. In addition, the multifunctional textile exhibits excellent photothermal conversion, and satisfactory solar water evaporation efficiency (80%) and rate (1.22 kg/(m 2 h)) under 1 sun. Therefore, the prepared multifunctional textile has great potential in multiscene applications.

Bidirectional Photoresponse in Perovskite‐ZnO Heterostructure for Fully Optical‐Controlled Artificial Synapse

“…Regarding the photoresponsive materials, halide perovskites have attracted great attention because of their excellent optoelectronic properties, [14][15][16] and can be applied in sensor, memory, photovoltaic unit and light-emitting diode [17][18][19][20] for artificial intelligence, humanoid robotics, and flexible electronic etc. [21][22][23][24][25][26][27][28][29][30][31][32][33] Not only the phenomenon of negative photoresponse in halide perovskites has also been observed [34][35][36][37][38] but halide perovskites based synaptic devices have also been fabricated and studied. [2,39] However, most devices of those researches are based on polycrystalline perovskite film, in which the great amount of grain boundaries can cause high power consumption and gradual performances degradation ascribing to large leakage current and instability in ambient conditions, respectively.…”

Flexible Ti 3 C 2 T x /(Aramid Nanofiber/PVA) Composite Films for Superior Electromagnetic Interference Shielding

“…Moreover, it has abundant surface functional groups, excellent water dispersibility, and film-forming performance and can be used to prepare polymer-based EMI shielding composite films with excellent comprehensive properties [ 17 – 19 ]. At present, most researchers have used blending or layer-by-layer alternating methods to prepare Ti 3 C 2 T x /polymer EMI shielding composite films [ 20 – 23 ]. When preparing Ti 3 C 2 T x /polymer EMI shielding composite films by blending, highly conductive Ti 3 C 2 T x is disorderly distributed in the insulating polymer matrix [ 24 – 26 ].…”

A Simple Polypyrrole/Polyvinylidene Fluoride Membrane with Hydrophobic and Self-Floating Ability for Solar Water Evaporation

“…(3) By the reason of the hydrophobicity of photothermalmembrane, the salt water cannot pass through the membrane holes, and the water vapor can escape through the membrane holes. The salt grains are blocked at the interface of the hydrophobic layer, and then the salt grains are taken away by the reflux of water, thus effectively inhibiting the salt precipitation [ 28 , 29 ]. For example, Wang et al assembled polypyrrole modified with fluoroalkyl silane on the stainless-steel mesh, to form a hydrophobic and self-healing photothermal membrane [ 30 ].…”