APPLIED SURFACE SCIENCE
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2022
·
IF 7.392
Xiannan Zhang,Zhenzhen Mo,Raul Arenal,Wenjiang Li,Cheng Wang
The mechanical robustness of superhydrophobic surface is essential for practical applications. In this work, multi-walled carbon nanotubes with copious hydroxyl groups (MWCNTs-OH) were firstly silanized, with the presence of a small amount of HCl aquesous solution as catalyst, by trimethoxymethylsiane (MTMS) in petroleum ether. Upon hydrolyzation and condensation, silica derived from MTMS could wrap the MWCNTs spirally like the vines wrapping the trees via forming Si O C bondings between the MWCNTs and silica. The resultant MWCNTs@MTMS composite exhibits superhydrophobic and superoleophilic properties. When added into one of commercial lacquers (LK-1014) as a filler, the mixture could be easily sprayed on various substrates with arbitrary dimensional size and shape. The optimized mass ratio of MWCNTs@MTMS to LK-1014 is about 1:20 for fabricating coating with both superior mechanical robustness and superhydrophobic and superoleophilic properties. The adhesions to some substrates and wear resistances were verified via the adhesive tape adhesion tests and sandpaper wear experiments. A copper mesh with sprayed coating was measured to have a water-resistance height of 14.6 cm, corresponding to an invasion pressure of 1430.8 Pa. Folding the sprayed copper meshes into boxes allows continuous separation of oil–water mixture with high separation efficiency (higher than 96 %), fairly large fluxes (higher than 120 kL·m −2 ·h −1 ) and application durability. Using filter paper with such coating for the separation of water-in-oil emulsions, an efficiency up to 99.9 % could be reached.
研究领域:
材料科学
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化学工程
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DOI
高影响因子
Advanced Intelligent Systems
·
2021
·Vol. 3
·期 9
·2100056
·
IF 0
Shengshun Duan,Binghao Wang,Yucheng Lin,Yinghui Li,Di Zhu,Jun Wu,Jun Xia,Wei Lei,Baoping Wang
Wearable sensors with water resistance and mechanical durability are of great value in dealing with long-term movement and remote control in harsh environments. However, achieving high sensitivity with long-term stability and real-time remote control in a watery environment is still a challenge. Herein, the waterproof wearable sensors with good mechanical robustness composed of laser-induced graphene and in situ-coated protective silicone layers are reported. By being integrated with high-capacitance ion-gel dielectrics, the conformal sensors can detect multiple stimuli, including strain, temperature, and pressure. The long-term water resistance of strain sensors is evaluated by continuously monitoring the resistance in underwater, sweat, and saline environment for up to 5.5 h. Underwater wireless remote control of a robotic hand is further demonstrated by mounting five sensor arrays. Moreover, different finger gestures are well recognized, making these sensor devices promising candidates for versatile waterproof wearable electronics and robotics technology.
研究领域:
材料科学
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生物医学工程
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电子工程
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产品关联
DOI
ACS Applied Materials & Interfaces
·
2023
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IF 9.5
Han Zhang,Yu-Qing Liu,Shaoqing Zhao,Long Huang,Zhi Wang,Zhiyong Gao,Zhiwei Zhu,Dahai Hu,Hua Liu
Silica glass devices are widely used due to their exceptional physical and chemical properties. However, prolonged usage may result in abrasion and contamination of silica glass devices, adversely affecting the service life. One of the most effective solutions to this issue is surface modification, in which superhydrophobicity with high transmittance and mechanical robustness is highly desired. Inspired by the concept of protective armor, we proposed a novel approach for the direct integration of robust and transparent superhydrophobic structures on silica glass. In this method, microstereolithography synergistic heat treatment processes are used to create a micrometer-scale biomimetic frame on the surface of silica glass and then filled with in situ deposited nanoparticles. The superhydrophobicity of the surface can be obtained through the nanoparticles, and the biomimetic frame can protect the surface from direct contact with external objects to achieve durability. This process allows the preparation of superhydrophobic silica structures on the silica device surface at temperatures below its melting point, which prevents any damage to the devices during the heat treatment. Moreover, up to 90% transmittance does not affect the performance of silica devices. The composite structure maintains a contact angle of over 150° after multiple abrasion tests, verifying the mechanical robustness. This innovative process paves the way for forming a high mechanical robustness and excellent transmittance protective layer on silica glass devices, which expands the application field.
研究领域:
材料科学
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表面工程
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产品关联
DOI
PubMed
高影响因子
LANGMUIR
·
2025
·
IF 3.9
Nan Zhou,Shuhan Hou,Insub Noh,Qingqing Liu,Yanbin Wang,Hyung Do Kim,Qi Zhou,Hideo Ohkita,Biaobing Wang
Superamphiphobic surfaces, combining both superhydrophobic and superoleophobic properties, show tremendous potential applications in various fields. However, the complicated procedures, expensive equipment, and poor mechanical robustness and durability seriously limit their commercialization. In this study, superamphiphobic surfaces have been fabricated by a simple spraying method using two different nanostructures of silicon dioxide. The nanosheet silica (about 80 nm) constructed a large-scale layer structure, and the nanospherical silica (about 30 nm) interweaved with nanosheet silica to form a double-scale “reentrant” micronano structure. The contact angle (CA) and sliding angle (SA) were estimated to be 158° and 1° for a water droplet, while the CA and SA were measured to be 154° and 3° for olive oil, meeting the superamphiphobic requirement. On the other hand, control surfaces that only adopted nanosheet or nanospherical silica just satisfy the superhydrophobic requirement. Owing to the similar chemical components of nanosheet and nanospherical silica, the two mixed very well and were uniformly dispersed, endowing the whole surface with the same superamphiphobic behavior. More importantly, the mixture of nanosheet and nanospherical silica was sprayed on the wet poly(amide-imide) (PAI) substrate, making them easily enter into the PAI film. This unique structure is helpful for improving mechanical robustness and durability. Thus, the surface wettability was nearly unaffected even though it underwent lots of tests, including sandpaper abrasion, ultrasonic treatment, acid–base immersion, UV irradiation, and boiling water jet impact. As expected, the superamphiphobic surfaces show antifouling, self-cleaning, and icing delay performances, and the icing time was prolonged from 55 to 342 s. It is believed that robust superamphiphobic surfaces with multifunctions of antiliquid-adhesion, self-cleaning, anticorrosion, and anti-icing have enormous potential applications in the industrial environment.
研究领域:
材料科学
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表面工程
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产品关联
DOI
PubMed
高影响因子
PROGRESS IN ORGANIC COATINGS
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2025
·
IF 7.3
Zhanbo Wang,Jiahui Mei,Minghua Liu,Chaocan Zhang
The demand for superhydrophobic coatings has been rapidly increasing, extending from applications in surface antifouling to surface anti-icing and self-cleaning, driving active exploration into mechanically robust superhydrophobic coatings. Fluorinated polyurethane (FPU) is considered a promising candidate for superhydrophobic coatings. However, most FPU-based superhydrophobic coatings exhibit limited adhesion to substrates and rely on nano-SiO₂ or nanoparticles to construct micro-nano hierarchical rough surfaces. However, it has been demonstrated that the rough surfaces created by nanoparticles reduce the effective contact area between the coating and the substrate, leading to accelerated wear of the coatings. Furthermore, to ensure the durability of superhydrophobic coatings, self-healing properties must also be considered. However, most self-healing superhydrophobic coatings developed so far require prolonged high-temperature conditions or external stimuli to restore their superhydrophobicity. Therefore, developing mechanically robust superhydrophobic coatings with self-healing capabilities remains a significant challenge. In this study, we synthesized a novel fully waterborne and self-healing FPU coating using a “two-step” polycondensation method. Even on the smoothest and hardest glass substrates, the coating retained its superhydrophobicity after 200 cycles of sandpaper abrasion, 200 cycles of tape peeling, a 6-hour water droplet test and acid-base resistance tests, outperforming most previously developed superhydrophobic coatings. Additionally, the coating exhibits excellent self-healing functionality. This allowed the coating to self-heal a 100 μm scratch and restore its superhydrophobicity within 56 min at room temperature without any external stimuli. The coating also exhibited excellent self-cleaning and delayed ice formation properties. This novel design and fabrication strategy provides a new perspective for surface protection.
研究领域:
材料科学
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表面工程
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化学工程
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DOI
高影响因子
CELLULOSE
·
2019
·Vol. 26
·期 4
·2861-2872
·
IF 3.917
Cheng Quan-Yong,Guan Cheng-Shu,Li Yi-Dong,Zhu Jiang,Zeng Jian-Bing
Traditional superhydrophobic cotton fabrics (CF) demonstrate various advantages such as self-cleaning, water repelling and efficient oil/water separation capacity but limited practical applications due to their poor mechanical robustness and environmental durability. In this work, robust and durable superhydrophobic polydivinylbenzene (PDVB) coated CF (PDVB@CF) are fabricated via a simple one-step, fluorine-free, and inorganic nanoparticle-free solvothermal method. The PDVB@CF displays excellent chemical resistance without losing superhydrophobicity after immersing in various organic solvents, strong acid and alkali solutions for a long time. The PDVB@CF shows excellent mechanical robustness to resist sandpaper abrasion and ultrasonication treatment. Furthermore, the PDVB@CF exhibits outstanding high and low temperature resistances since the contact angle of either acidic or alkali droplets is greater than 150° after isothermal treatment at 200 °C or immersion in liquid nitrogen for 3 h. The PDVB@CF is very efficient in separating water mixtures with various oily compounds with separation efficiency of higher than 98% and flux up to 56 k L m −2 h −1 depending on characteristics of the oils. In addition, the PDVB@CF shows excellent recyclability with superhydrophobicity and separation efficiency that remained after 10 separation cycles. The PDVB@CF with excellent robustness and durability exhibits potential utility in oil/water separation even under some harsh conditions.
研究领域:
材料科学
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环境工程
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产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
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2024
·
IF 8.3
Li Zhang,Jian Xu,Zhiqing Hu,Peizhuang Wang,Jiaqi Shang,Jiang Zhou,Lili Ren
Antireflective coatings with superhydrophobicity have many outdoor applications, such as solar photovoltaic panels and windshields. In this study, we fabricated an omnidirectional antireflective and superhydrophobic coating with good mechanical robustness and environmental durability via the spin coating technique. The coating consisted of a layer of phytic acid (PA)/polyacrylamide (PAM)/calcium ions (Ca2+) (referred to as Binder), an antireflective layer composed of chitin nanofibers (ChNFs), and a hydrophobic layer composed of methylsilanized silica (referred to as Mosil). The transmittance of a glass slide with the Binder/ChNFs/Mosil coating had a 5.2% gain at a wavelength of 550 nm, and the antireflective coating showed a water contact angle as high as 160° and a water sliding angle of 8°. The mechanical robustness and environmental durability of the coating, including resistance to peeling, dynamic impact, chemical erosion, ultraviolet (UV) irradiation, and high temperature, were evaluated. The coating retained excellent antireflective capacity and self-cleaning performance in the harsh conditions. The increase in voltage per unit area of a solar panel with a Binder/ChNFs/Mosil coating reached 0.4 mV/cm2 compared to the solar panel exposed to sunlight with an intensity of 54.3 × 103 lx. This work not only demonstrates that ChNFs can be used as raw materials to fabricate antireflective superhydrophobic coatings for outdoor applications but also provides a feasible and efficient approach to do so.
研究领域:
材料科学
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纳米技术
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DOI
PubMed
高影响因子
Engineering
·
2024
·
IF 10.1
Jialiang Zhang,Qing Yang,Qingyun Ma,Fangzheng Ren,Yang Cheng,Xiaodan Gou,Jie Liang,Feng Chen
Hard scales in scaly fish species ensure the structural and functional integrity of the inner skin and body, even when subjected to various types of external forces. Mucus and oil secreted from the inner layer of the fish skin to the surface exhibit resistance to a wide range of liquids, maintaining the antifouling properties of the fish skin surface. Inspired by these biological structures, ultra-sturdy and durable scale-armored-sliding surfaces (SASS) were fabricated in this study using femtosecond laser electrodeposition (FED). In the FED method, a scaly structure is grown from the substrate across a sliding layer to form an SASS. The unique scale-armored structure offers protection against impact and abrasion while maintaining the performance and integrity of the structure. The mechanical sturdiness of the SASS improved by four orders of magnitude compared to that of the conventional antifouling surface. In addition, the SASS exhibited remarkable chemical durability, excellent hydraulic pressure resistance, liquid repellency, and good corrosion resistance based on characterization using various methods. FED enables the preparation of SASS on several materials, including Cu and Al and more. SASS fabricated using FED has great potential for the application of antifouling surfaces in extremely harsh environments.
研究领域:
材料科学
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仿生学
·
表面工程
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产品关联
DOI
高影响因子
ACS Sustainable Chemistry & Engineering
·
2021
·
IF 8.198
Binbin Sun,Jun Li,Yahao Guo,Heng Li,Hao-Yang Mi,Binbin Dong,Chuntai Liu,Changyu Shen
The low durability and stability of superhydrophobic foams and high fabrication costs are the main reasons that limit their practical applications in water remediation and oil recycling. Herein, an extremely superhydrophobic and exceptionally robust foam was developed based on ultrahigh-molecular weight polyethylene (UHMWPE) by supercritical carbon dioxide (scCO2) foaming and subsequent surface modification. The developed foam comprises a highly porous structure decorated with hydrophobic silica nanoparticles and aligned UHMWPE crystallites, constructing a complex micro–nanosized hierarchical morphology, which contributed to an unprecedented water contact angle (WCA) of 162° and a sliding angle of 1°. When used in selective oil absorption and oil/water separation, the foam demonstrated about 100% separation efficiency in repetitive use and even under a vacuum of −70 Kpa due to its high water repellency. More importantly, the foam has outstanding tolerance against mechanical damages such as ultrasonication, bending and twisting, tape peeling, steel wool abrasion, and knife scratching. The surface could maintain the hierarchical structure and a WCA of over 156° after enduring different damages. Moreover, when the surface is clogged, the foam could restore its superhydrophobicity by arbitrary fracturing and cutting, resulting in a theoretically unlimited lifespan. This work not only proposes a UHMWPE-based superhydrophobic foam with extremely high superhydrophobicity, durability, and separation efficiency but also provides insights into the design and mass production of ultraefficient and robust superhydrophobic porous materials for practical applications.
研究领域:
材料科学
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环境科学
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化学工程
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产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2025
·
IF 5.4
Runyi Han,Zhenxi Zhang,Chenbo Gong,Jingrui Feng,Zichen Qi,He Liu,Zixu He,Jing Gao,Dong Wen,Zhaopeng Xu
Electroencephalography (EEG) devices have witnessed significant advancements in the field of medicine and brain-computer interface. However, wet electrodes widely used in hospitals and clinics require filling with conductive paste, and the installation and removal processes are complex, posing challenges in daily EEG monitoring. Herein, we prepared a novel organic conductive hydrogel with a dual physically cross-linked network by facilely combining the thermally reversible phase transition of gelatin with an amphiphilic zwitterionic [2-(methacryloxy) ethyl] dimethyl-(3-propyl sulfonic acid) ammonium hydroxide in a glycerol-water binary solvent system. The hydrogel exhibits outstanding tensile strength (0.66 MPa) and elongation (525.7 %), very low skin-electrode contact impedance (3.54 kΩ at 10 Hz), and remarkable moisture retention (72 h). It demonstrates good adhesion to various substrates and can transform from a liquid sol at high temperatures to a solid gel at low temperatures (phase transition temperature of 43.6 ℃). Therefore, this hydrogel can penetrate the hair in the gel dissolving state, and firmly adhere to the scalp after solidification, forming a tight electrode-skin contact interface. This provides an effective strategy for long-term daily use in EEG monitoring.
研究领域:
生物医学工程
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材料科学
·
神经科学
·
高分子科学
✓ 已验证
产品关联
DOI
高影响因子
SURFACE & COATINGS TECHNOLOGY
·
2019
·
IF 3.192
Kai An,Cai Long,Yi Sui,Yongquan Qing,Guangzhen Zhao,Zhenqiang An,Linshan Wang,Changsheng Liu
Superhydrophobic coatings have been developed widely, because of their self-cleaning, anti-fouling, and anti-icing properties. However, there are critical challenges in terms of poor durability in harsh environments. Herein, we report an effective and simple strategy for large-scale fabrication of durable superhydrophobic composite coating , based on polydimethylsiloxane filled with fluoroalkyl silane functionalized cerium dioxide . The obtained composite coating showed satisfactory water repellency with water contact angle of 161 ± 2° and sliding angle of 4 ± 1°, mainly attributed to the construction of multilevel micro/nano scale structure. Such coatings possessed outstanding chemical stability, self-cleaning property, and adhesion strength . Notably, the coating was UV resistant and mechanically robust, which could also retain good superhydrophobicity after 240 h of UV irradiation, 30 abrasion cycles, and scratching, and could be applied to a variety of substrate surfaces. In addition, according to electrochemical test results, the superhydrophobic composite coating showed excellent corrosion barrier and active corrosion inhibition effect, due to synergy between trapped air films and cerium dioxide. These multiple key properties integrated into our superhydrophobic composite coating are expected to provide a wide range of applications in various extreme outdoor environments.
研究领域:
材料科学
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表面工程
·
防腐蚀技术
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Xuan Jiao,Meiting Li,Xinquan Yu,Shu Yang,Youfa Zhang
Superamphiphobic surfaces that can keep surface clean even in severe oil pollution environments are attractive for many practical applications. Existing surfaces could achieve good environmental durability, but rarely anyone has demonstrated that coatings with mechanical robustness and superamphiphobicity were fabricated by simple fabrication processes. In this work, a new design of component phase separation on nanoparticle-capsules is proposed to generate durable superamphiphobic coatings by spray-coating the suspension of fluorinated nanoparticle powders and ceramic binders. During the process of film formation, the micro/nano composite structures appear on the surface by the stacking of agglomerates and nanoparticles. Meanwhile, the particles in the suspension can be reunited to produce plentiful particle-agglomerates in longitudinal direction driven by the difference of surface tension. And the agglomerates acted as particle-capsules are able to release the embedded fluorinated silica nanoparticles to the surface to regenerate superamphiphobicity instantaneously during physical wear. Moreover, the coatings are durable against physical abrasion of 500 Taber abrasion cycles under a load of 250 g, maintaining super-repellency to oils under comprehensive harsh conditions such as oil immersion, oil mist impact, and sand water stirring. This strategy is supposed to offer a new insight to development durable superamphiphobic coatings that can endure harsh operation environments for mechanical abrasion and chemical erosion.
研究领域:
材料科学
·
表面工程
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）