Advanced Materials Interfaces
·
2021
·Vol. 9
·期 6
·2101786
·
IF 6.147
Meijin Zhao,Wenshuai Zhang,Dan Wang,Peipei Sun,Yuanyuan Tao,Lingxiao Xu,Lei Shi
Flexible strain sensors based on conductive hydrogels show great potential in wearable devices, electronic skins, and bioelectronics. However, hydrogels inevitably exhibit poor durability for long-term usage due to the water loss by evaporation. Herein, an external packaging strategy is demonstrated for fabricating sandwich-like packaged hydrogel strain sensors (PHSSs) through the combination of conductive hydrogel injection and subsequent packaging via a photopolymerization procedure. The as-prepared PHSS consists of two functional parts, internal hydrogel conducting wires exhibiting excellent linear strain sensing performance as sensing element and an external packaging hydrogel layer with good transparency and conformal adhesion to human skin. Thanks to these intriguing merits, the PHSS possesses the capability to detect both the large-scale and subtle human motions precisely. Particularly, compared to conventional naked hydrogel strain sensors, the lifespan of PHSS is proved to be remarkably enlarged benefiting from the protective effect of external packaging layer towards the embedded hydrogel sensing element. Besides, the swelling property of external packaging layer even after severe dehydration enables the sensor to be reusable. This work provides a new approach for the fabrication of flexible strain sensors with enhanced lifespan and good reusability.
研究领域:
材料科学
·
生物医学工程
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产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2022
·
IF 10.383
Zehao Wang,Dongdong Yao,Zhongjie He,Yisong Liu,Hongni Wang,Yaping Zheng
Limited durability and complex materials restrict the application of superhydrophobic fabrics in daily life. In this work, gellable fluorinated block copolymer poly(dodecafluoroheptyl methacrylate)-block-poly(3-(triethoxysilyl)propyl methacrylate) (PDFMA-b-PTEPM) was used to fabricate adhesive-free superhydrophobic poly(ethylene terephthalate) (PET) fabrics via a simple dip-coating technology and sol–gel reaction. The growth of silica nanoparticles builds up a rough hierarchical structure and provides sol–gel reaction sites of PTEPM segments. The grafting of block copolymer significantly reduced the surface free energy of the fabrics, resulting in an excellent superhydrophobicity with a water contact angle of 160.2°. Benefiting from extensive chemical bond grafting and cross-linking of the PTEPM segment, the fabric exhibits excellent durability in mechanical abrasion, chemical treatment, and washing. The coating has withstood 50 sandpaper abrasion cycles and 400 soft friction cycles and can maintain superhydrophobic properties in various solvents, freezing and a wide pH range. These superhydrophobic fabrics with a long life span possess self-cleaning, anti-icing, oil–water separation, and self-healing capabilities. The multifunctional fabrics developed in this study are durable and easy to produce, possessing the potential for applications in industry and daily life.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CONSTRUCTION AND BUILDING MATERIALS
·
2021
·
IF 6.141
Heyang Si,Mengyuan Zhou,Yongle Fang,Jianhui He,Lu Yang,Fazhou Wang
The application of titanium dioxide (TiO 2 ) photocatalyst in concrete is considered a promising method to effective remove nitrogen oxide (NOx) pollutants. However, the influences of application ways on photocatalytic efficiency and catalyst durability should be concerned in detail for its large-scale application. This paper compared the photocatalytic NOx degradation efficiency and durability of conventional TiO 2 powder dispersed in cement mortar (TPC), TiO 2 supported aggregates mounted on cement mortar surface (TAS) and TiO 2 supported aggregates dispersed in cement mortar (TAD), with considering different environmental factors effects such as gas flow rate, NO initial concentration and relative humidity. The photocatalytic efficiency results show that the NOx removal efficiency of TAS is about 1.5 and 1.1 times higher than that of TPC and TAD, respectively, corresponding to the utilization efficiency of TiO 2 photocatalysts in TAS is ca. 10 and 16 times higher than in TPC and TAD, respectively. The surface abrasion test suggests that TAS has relatively low photocatalytic efficiency compared with TAD after polishing the sample surface by more than 2 mm, which depends on the mounted thickness of TiO 2 supported aggregates. The findings in this work can provide the basis for the application ways of TiO 2 supported aggregates in concrete by considering its photocatalytic efficiency, economic efficiency and catalytic durability.
研究领域:
环境科学
·
材料科学
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产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2018
·
IF 5.091
Zhiwei Huang,Robert S. Gurney,Tao Wang,Dan Liu
Superhydrophobic (SH) surfaces with self-cleaning photocatalytic properties have become an important research focus in recent years. In this work, we fabricated multifunctional and environmentally durable SH surfaces via a facile one-step reaction of octadecyl isocyanate (ODI) with TiO 2 particles. The resulting films possess SH properties, facilitated by a combination of hydrophobic long alkyl chains and the hierarchical crystalline structure. Films can be prepared via spray or blade coating on a variety of hard and soft substrates, and function well when exposed to either air or oil. The coating retains its SH properties for at least 6 months in ambient conditions, and after organic pollution it can recover its SH properties using UV or sun light illumination. After water impalement, the SH properties can self-heal via the self-assembly of long alkyl chains to their original state within several hours at ambient conditions, or within minutes on a heating stage. The covalent bonds between alkyl chains and TiO 2 , together with hydrogen bonds between adjacent alkyl chains, greatly increased the surface durability of the SH films. This multifunctional SH coating is a very promising material for commercial and industrial coating applications.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
COMPOSITES PART B-ENGINEERING
·
2020
·
IF 7.635
Wei Yang,Jun-Jie Liu,Li-Li Wang,Wei Wang,Anthony Chun Yin Yuen,Shuhua Peng,Bin Yu,Hong-Dian Lu,Guan Heng Yeoh,Chun-Hui Wang
Recent advancement of MXene (Ti 3 C 2 T x ) nanosheets has demonstrated the wide range of applications benefiting from its lightweight and high electrical conductivity . It possesses great potential as electromagnetic interference (EMI) shielding material owing to its layered structure and high conductivity. Currently, the major shortcoming of utilizing MXene as EMI shielding films is the lack of flexibility and high oxidation tendency to TiO 2 in humid condition, which might significantly impair their mechanical and electrical properties. To overcome this drawback, MXene/natural rubber (NR) composite films were prepared using a suction filtration of the mixed suspension containing MXene (Ti 3 C 2 T x ) and NR. The strong interaction between NR and MXene results in the formation of lightweight, interconnected and hydrophobic composite films. The MXene/NR60% film demonstrates high water contact angle (104°) and low density (1.28 g/cm 3 ). It also shows a tensile strength of 34 MPa, elongation at break of 4.5%, and cyclic folding endurance of 7425 times, which are 1.5, 5.6 and 62 times of pure MXene film respectively. Microscale combustion calorimeter results show that higher concentration of MXene leads to more significant flame retardancy of MXene/NR composite films. MXene/NR60% film at a thickness of 65.6 μm exhibits outstanding EMI shielding efficiency 47.8 dB. After soaking in water for 15 days followed by bending 6000 times, this film retains high EMI shielding efficiency (32.8 dB), indicating an excellent durability. The high performance MXene/NR composite films combined with their mechanical endurance provide a new material for protecting wearable electronic devices and other sensitive equipment against microwaves.
研究领域:
材料科学
·
电子工程
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产品关联
DOI
高影响因子
PROGRESS IN ORGANIC COATINGS
·
2023
·
IF 6.6
Ziqiang Liu,Pengpeng Tu,Yating Ji,Zaisheng Cai,Hongwei Wu,Bi Xu
Fogging on transparent materials may severely obstruct vision, resulting in many problems such as energy consumption and safety hazard. Superhydrophilic coatings can effectively prevent fogging by facilitating the formation of a uniform and continuous water film. However, superhydrophilic coating usually suffers from organic solvent usage and its vulnerability in high-humidity environments due to excessive water absorption. In this work, a water-based durable anti-fogging coating has been prepared with a copolymer (P(SBMA-co-VTHS)), which is fabricated with [2-(methacryloyloxy) ethyl] dimethyl-(3-sulfopropyl) ammonium hydroxide (SBMA) and vinyl trihydroxy silane (VTHS). As the main component, SBMA is superhydrophilic, while VTHS allows the copolymer to establish covalent bonds with the glass. Benefiting from the delicate balance between superhydrophilicity and durability, glass coated with P(SBMA-co-VTHS) could maintain excellent transparency in hot vapor (80 °C) for 8 h. Meanwhile, the light transmittance of coated glass remained above 85 % even after 40 cycles of tape peelings. In addition, the P(SBMA-co-VTHS) coating showed superior self-cleaning performance due to its superhydrophilicity, which is meaningful for practical applications.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2023
·
IF 9.5
Tinghan Yang,Pan Wu,Changjun Liu,Zunzhao Li,Wei Wang,Yang Xu,Haibo Wang,Wei Jiang
The reduction of oil fouling in pipes and tanks is essential for the oil storage and transportation industry. In this study, a superhydrophilic/underwater superoleophobic surface (SUSS) with high wearability, weatherability, and durability was developed using a facile two-step synthesis method and used to expel fouled oil from the surface using water without a surfactant. Some typical oils, including kerosene and white oil, can be spontaneously expelled by static water; however, rapeseed oil requires motive water for expulsion because of its high affinity for the SUSS. Different occurrences can be estimated based on a correlated parameter, φ(Pe), which is calculated using an introduced dimensionless number, Pe=σLVuμ. A positive value of φ indicates the occurrence of fouled-oil expulsion by water replacement, whereas a negative value indicates no occurrence of this phenomenon. This study provides a facile strategy for the rapid cleansing of oil-fouled pipes and tanks without using a detergent, thereby lowering costs and environmental risks.
研究领域:
材料科学
·
表面工程
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2024
·
IF 4.1
An-ru Yan,Xiao-bo Wang,Ling Zhu,Xue-sheng Liu,Zhi-yong Wang
Economic viability and durability are pivotal challenges limiting the commercial application of proton exchange membrane fuel cells (PEMFC). The development of low Pt usage oxygen reduction reaction catalysts with high catalytic activity and durability is imperative. Carbon support corrosion, as well as Pt particles agglomeration and exfoliation are primary causes of commercial Pt/C catalyst degradation. Here, a composite materials formed by TiO 2 containing oxygen vacancy (O V ) and carbon nanotube (CNT) was used as a functional support to successfully load Pt nanoparticles (NPs). The oxygen vacancy facilitated interactions between TiO 2 (O V ) and Pt, enhancing the anchoring of Pt NPs and suppressing particle growth. The Pt/TiO 2 (O V )-CNT demonstrates excellent performance with mass activity of 788 mA/mg Pt @0.85 V, the half-wave potential increased 34 mV and the tafel slope decreased by 11.89 mVdec −1 compared to commercial Pt/C. The durability of Pt/TiO 2 (O V )-CNT nearly 3-fold that of commercial Pt/C with negligible decay of half-wave potential (0.9 %) and mass activity (16 %). Density functional theory calculations and X-ray photoelectron spectroscopy indicated that the charge transfer from TiO 2 (O V ) to Pt facilitates the formation of strong metal-support interactions (SMSI), leading to a downward shift in the d-band center of Pt and a reduction in the binding strength to *OOH, thus lowering the activation energy of the rate-determining step which in turn promoting the activity of ORR. This study provides a reliable approach for designing catalysts with high activity and durability.
研究领域:
材料科学
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催化化学
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能源科学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Chenyang Cai,Yibo Wang,Xiaodan Wu,Wanquan Cai,Zechang Wei,Yu Fu
Incorporating zero-energy-input cooling-power generation technology into personal thermal management (PTM) systems is a promising solution for thermal energy utilization but remains a huge challenge due to lacking of effective assembly technology. In this work, a sustainable, cost-effective, superdurable, and nanostructured cellulosic metafabric (CWF) is reported that exhibits well radiative cooling function to achieve high-performance power generation. Through tailoring the viscoelasticity and optical performance in the electrospinning process, this metafabric demonstrates a unique micro/nano structure and anchored MOF assembly, 95.7 % solar reflectivity, 0.94 infrared emissivity, high mechanical strength, washability, surface hydrophobicity, and UV resistance can be achieved. This metafabric exhibited high cooling efficiency of 5.7 °C during direct sunlight in summer and anti-washing and UV stability. Furtherly, we coupled the CWF (as the cold sink) with a commercial thermoelectric device to assemble a power generation device. The device can output average voltage of 200 mV with an average temperature gradient of ≈20.1 °C under stimulated sunlight and shows superdurable power generation performance even after washing or folding (7000 cycles) use. An outdoor test demonstrated it can deliver a high output voltage of 519 mV in Nanjing, China. The cooling metafabirc shows great promise for practical applications in wearable power generation devices.
研究领域:
材料科学
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能源技术
·
纺织工程
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产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Yu Zhang,Yuxin Luo,Ya Huang,Mengqi Wang,Annan He,Jiaxing Chen,Xuelin Lu,Zhiyu Huang,Wei Ke,Hao Yu,Fengxiang Chen
Carbon fiber (CF) has been widely used in aerospace, military, infrastructure, sports, and leisure fields owing to its excellent mechanical properties, superior corrosion and friction resistances, excellent thermal stability, and lightweight. However, the ultrablack appearance derived from the extremely strong absorption of light throughout the entire visible region makes it difficult to satisfy the aesthetic and pleasurable demands of the colorful world and limits their applications in a broader field. Herein, inspired by the Japanese jewel beetle, a double-layer ultrathin Al2O3/TiO2 composite structure was fabricated on CFs by the atomic layer deposition method. CFs exhibited desired color diversity by controlling the thickness of Al2O3 and TiO2 films without changing the total thickness of the composite film’s structure. Meanwhile, colored CFs have no color change/destruction after a series of environmental durability measurements and exhibited remarkable superdurability and excellent flame retardancy. Our work provides insights for innovative, high-performance, and multifunctional CF that can help achieve high quality and sustainable development of the CF industry.
研究领域:
材料科学
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环境科学
·
光学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CELLULOSE
·
2025
·
IF 4.8
Yao Yiqing,Cheng Haibing,Han Juan,Wang Haifeng,Liang Zhijie
The development of cotton fabrics with exceptional and durable fluorescent properties has garnered significant attention. In this study, an enduring fluorescence cotton fabric was fabricated by a convenient and efficient approach. Interestingly, carboxyl reactive groups were employed as bridging agents to covalently link the raw fabric with Europium (Eu)-based polyoxometalate, thus guaranteeing the tight bonds between the polyoxometalates and the fabric matrix. The morphology and microstructures of composite fabrics were characterized and compared, demonstrating the successful integration of polyoxometalates into the fabric featuring covalent bonding interactions. Additionally, the fluorescence emissions of composite fabrics were investigated ( λ ex = 243 nm). The emission spectrum exhibits typical emission peaks of Eu 3+ and polyoxometalate, corresponding to the 5 D 0 → 7 F 0–4 transitions in the range of 550–750 nm and the O → W transition, which results in distinct red fluorescence. Moreover, the lifetime-decay behavior, monitored at an excitation wavelength of 243 nm, follows a single-exponential function, yielding a lifetime ( τ ) of 0.4 ms. More importantly, owing to the robust interaction between the components, the composite fabric demonstrates exceptional fastness properties, including resistance to washing (50 times washing), abrasion (under both dry and wet conditions), and sunlight (9 days). In particular, three kinds of shaped masks were used, highlighting its potential as a reusable anti-counterfeiting material. The plausible mechanisms of the system is attributed to the efficient electron transition and energy transfer processes within the composite structure. Besides, mechanical property reveal PW 11 Eu@CF almost inherits the original fabric’s mechanical property. This work provides a novel strategy for the controlled design and fabrication of polyoxometalate-based anti-counterfeit material.
研究领域:
材料科学
·
纺织工程
·
光学材料
✓ 已验证
产品关联
DOI
高影响因子
Small Methods
·
2024
·
IF 10.7
Hang-Lin Li,Fang Wang,Rong-Gang Zhang,Mei-Lin Guo,Yu-Zhong Wang,Fei Song
Developing superwetting coatings with environmental adaptability is critical for sustainable industrial applications. However, traditional anti-wetting coatings often fall short due to their susceptibility to environmental factors (UV light, temperature, mold growth, and abrasion) and inadequate stain resistance in complex media. Herein, a durable ex situ pH-responsive coating with reversible wettability switching, engineered by integrating hydrophobic polydimethylsiloxane and tertiary amine structures is presented. The resulting hierarchical micro-nano surface structure, combined with a trapped air cushion, ensures low water adhesion and stable superhydrophobicity. Notably, after ex situ pH treatment, the modulation of surface N + content synergistically interacts with polydimethylsiloxane chains, enabling a controlled transition in surface wettability from 150° to 68.5°, which can spontaneously revert to a hydrophobic state upon heating and drying. This transition enhances stain resistance in both air and underwater environments, resulting in a 17.2% increase in detergency compared to superhydrophobic controls. Moreover, the coating demonstrates remarkable durability, with no staining, peeling, or mildew growth (grade 0) even after 1500 h of UV radiation and 28 days of mildew resistance testing. This work offers a highly adaptable and stain-resistant coating for applications in building and infrastructure protection, as well as in smart textiles designed for multi-media decontamination.
研究领域:
材料科学
·
表面化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）