A robust and multi-functional nanocomposites with “soft and hard” nanodomains against harsh environments

Gao, Feng; Song, Lina; Tong, Zheming; Gui, Taijiang; Cong, Weiwei; Zhang, Kai; Wu, Xuri; Liu, Quan; Ren, Yongyuan; Zhan, Xiaoli; Zhang, Qinghua

doi:10.1016/j.cej.2022.139894

Cited by 12 publications

(7 citation statements)

References 65 publications

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“…Additionally, the PDMS-MXene@PU sponge possessed durable superhydrophobicity to resist kneading and sanding damage (Figure S8). Undoubtedly, the most important factor was the formation of the stable cross-linkable structure constructed by PDMS(OH), MXene-NH 2 , and GPTMS. , …”

Section: Resultsmentioning

confidence: 99%

Conductive Cross-Linkable PDMS-MXene Nanosheet Networks on Polyurethane Sponges as Robust Superhydrophobic Sensors for Human Motion Detection

Su,

Yang,

Zhang

et al. 2024

ACS Appl. Nano Mater.

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Wearable piezoresistive sensors have aroused considerable attention for their huge potential in emerging applications such as healthcare monitoring and intelligent electronics. However, the fabrication of piezoresistive sensors that combine excellent sensing performance with outstanding working reliability in watery environments still remains challenging. Herein, a superhydrophobic polyurethane (PU) sponge was proposed as a piezoresistive sensor through the synthesis of D-asparaginemodified MXene nanosheets (MXene-NH 2 ) and coating of a conductive cross-linkable layer constructed by dihydroxyl-terminated poly(dimethylsiloxane) (PDMS(OH)) and MXene-NH 2 nanosheets. The microscale sponge skeleton and nanoscale PDMS-MXene nanosheet wrinkles formed a hierarchically rough structure in support of superhydrophobicity with a water contact angle of 160°. Benefiting from the chemically cross-linkable network and strong adhesion of PDMS-MXene nanosheet coating, the obtained PDMS-MXene@PU sponge exhibited a robust water repellency with water contact angles (WCAs) larger than 150°after enduring chemical and physical damages. Owing to the synergistic effect of the production of microcrack junctions in the PDMS-MXene nanosheet layer and contact separation between conductive backbones, the PDMS-MXene@PU sensor was successfully applied in monitoring full-scale human motions (e.g., blowing, facial expression, finger and knee bending, etc.) with excellent sensing performances of the gauge factor reaching −1.9. The findings conceivably stand out as a methodology to fabricate robust superhydrophobic piezoresistive sensors with desirable sensing property for innovative and broad applications even under special working conditions.

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Section: Resultsmentioning

confidence: 99%

Conductive Cross-Linkable PDMS-MXene Nanosheet Networks on Polyurethane Sponges as Robust Superhydrophobic Sensors for Human Motion Detection

Su,

Yang,

Zhang

et al. 2024

ACS Appl. Nano Mater.

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“…Thus, the MS@PVA-MXene- PDA@LPs show good properties of chemical stability, thermal stability, and mechanical durability, and have great potentials in the separation of oil/water mixtures in harsh environments. 42,43 Oil Adsorption and Oil/Water Separation. The MS@ PVA-MXene-PDA@LPs shows a WCA of 152.3°and an oil contact angle of ∼0°, and thus, this superhydrophobic/ superoleophilic MS can be utilized in the field of oil/water separation.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

Facile Preparation of Photothermal Superhydrophobic Melamine Sponge Decorated with MXene and Lignin Particles for Efficient Oil/Water Separation, Fast Crude Oil Recovery, and Active Deicing

Wang,

Qiao,

et al. 2024

Langmuir

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Frequent oil spills and the discharge of oily wastewaters have caused a serious threat to the environment, ecosystems, and human beings. Herein, a photothermal and superhydrophobic melamine sponge (MS) decorated with MXene and lignin particles has been prepared for the separation of oil/water mixtures, the recovery of crude oils, and active deicing. The obtained superhydrophobic melamine sponge shows a water contact angle (WCA) of 152.3° and an oil contact angle of ∼0° and possesses good chemical stability, thermal stability, and mechanical durability in terms of being immersed in various liquids (i.e., corrosive solutions, organic solvents, and boiling water) and being abrased by sandpapers. This superhydrophobic MS displays a high oil adsorption capacity of CCl4, up to 91.6 times its own weight and a high separation efficiency of 99.4%. Furthermore, the maximum surface temperature of the superhydrophobic MS reaches 57.5 °C under sunlight irradiation (1.0 kW/m2) due to the excellent photothermal heating conversion performance of MXene and lignin particles. When exposed to sunlight, the superhydrophobic MS can quickly absorb viscous crude oils up to 72 times its own weight. Also, the WCA of the superhydrophobic MS remains above 146° after 50 icing/deicing cycles, showing excellent photothermal anti-icing properties. Thus, this study presents an easy and low-cost method for designing photothermal superhydrophobic melamine sponges and opens a new avenue to the applications of efficient oil/water separation, fast crude oil recovery, and active deicing.

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“…Nowadays, creating a robust superhydrophobic surface (SHS) with excellent water-repellent properties inspired by lotus leaf has attracted extensive attention, [1][2][3][4][5] which is believed to be able to solve a large number of engineering problems. In pace with deepening correlational research, however, many scholars and researchers found that SHSs actually have faced a lot of practical application problems, such as being damaged physically easily, failure under extreme environments with high pressure, high temperature, high humidity, and so on, which greatly limited its generality and functionality.…”

Section: Introductionmentioning

confidence: 99%

“…[44] Villegas et al reported a chitosan-impregnated LIS nanoscale coating by a combination of oxygen-plasma treatment, chemical vapor deposition (CVD), chitosan submersion, and lubricant infusion, which facilitates cell adhesion at the same time preventing biofilm formation. [45] But the chemical methods above have the disadvantages of longtime consumption, expensive synthesis process, the necessity of rigorous experimental conditions, and the like, [5,46] which make them not suitable for the preparation of SLIPS on Ti6Al4V in the practical application. Therefore, it has become an urgent problem to employ a suitable processing method to obtain a rough substrate to prepare SLIPS on Ti6Al4V.…”

Section: Introductionmentioning

confidence: 99%

Preparation of Multiscale Slippery Liquid‐Infused Porous Surface Based on Ti6Al4V Alloy with Self‐Cleaning, Stability, and Self‐Healing Properties

et al. 2023

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Ti6Al4V alloy with excellent mechanical, physical, and chemical properties is now widely used in marine, aerospace, and biomedicine industry. Endowing Ti6Al4V alloy with better surface performances is of great significance and value. Herein, a convenient and commercial nanosecond laser etching method is utilized to fabricate a novel multiscale micro/nano porous structure based on Ti6Al4V alloy. Following the modification of the fluoroalkylsilane and the infusion of silicon oil, the slippery liquid‐infused porous surface (SLIPS) is successfully obtained. The wettability is studied in detail and indicates the SLIPS possesses excellent sliding property and hydrophobicity. The volume of the droplet and sample temperature are confirmed to have some significant impact on the sliding angles. Accordingly, a variety of liquids are able to slide down the tilted SLIPS (15.9°), indicating that the as‐prepared SLIPS demonstrates extraordinary liquid‐repellent ability. In addition, the multiscale micro‐/nanoporous structures can lock the silicon oil firmly and form a stable oil film on the surface, so the SLIPS also shows desirable self‐cleaning, self‐healing, and stability properties. Based on the study, it is promising that the SLIPS as‐prepared may expand the practical application of conventional Ti6Al4V alloy materials.

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A robust and multi-functional nanocomposites with “soft and hard” nanodomains against harsh environments

Cited by 12 publications

References 65 publications

Conductive Cross-Linkable PDMS-MXene Nanosheet Networks on Polyurethane Sponges as Robust Superhydrophobic Sensors for Human Motion Detection

Conductive Cross-Linkable PDMS-MXene Nanosheet Networks on Polyurethane Sponges as Robust Superhydrophobic Sensors for Human Motion Detection

Facile Preparation of Photothermal Superhydrophobic Melamine Sponge Decorated with MXene and Lignin Particles for Efficient Oil/Water Separation, Fast Crude Oil Recovery, and Active Deicing

Preparation of Multiscale Slippery Liquid‐Infused Porous Surface Based on Ti6Al4V Alloy with Self‐Cleaning, Stability, and Self‐Healing Properties

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