LANGMUIR
·
2025
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IF 3.9
Chen-Zheng Yan,Zhi-Yang Zhang,Chun-Yan Li,Song-Hai Wu,Yong Liu,Xu Han
Although the slippery liquid-infused porous surfaces (SLIPSs) exhibit highly antifouling performance against various working liquids, the loss of lubricant always deteriorates their long-term durability. Herein, a spongy composite of polyvinylidene difluoride (PVDF) and hydrangea-type perfluorooctyltrimethoxysilane (POTS)-modified mesoporous silica nanoparticles (MSNs) has been successfully prepared via the spraying method and used as the substrate for SLIPSs, which exhibits satisfactory storage and lock capacities for lubricant to enhance its durable antifouling performances. After infusing perfluoropolyether (PFPE) into the spongy substrate, a stable POTS-MSNs@PVDF@PFPE is prepared, which exhibits high amphiphobic performances (WSA of 1.68 ± 1.13° and OSA of 5.99 ± 1.34°) and high repellence to various working liquids, indicating its high antifouling performance. The long freezing time of 121.50 s and the low ice-adhesion strength of 25.67 kPa also indicate its high anti-icing performances. Furthermore, the high stability of POTS-MSNs@PVDF@PFPE after various thermal, chemical, and mechanical testing indicates its satisfactory durability. Actually, the abundant micropores of POTS-MSNs@PVDF provide adequate space for locking PFPE, thus prolonging its antifouling performances. This study provides an insight into the development of SLIPSs capable of maintaining long-term antifouling performance in harsh environments.
研究领域:
材料科学
·
表面工程
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产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Xinjian He,Cunmin Wang,Yaxin Hao,Jiaqi Li,Guiying Zhu,Liang Jiang,Jiang Shao,Mingming Zhang,Xiao-Peng Li,Heguo Li,Huan Xu
The wide use of conventional polymeric air filters is causing a dramatically increasing accumulation of plastic and microplastic pollution. The development of poly(lactic acid) (PLA) fibrous membranes for efficient air purification is of important significance but frequently challenged by the rapid decay of filtration performance due to the intrinsically poor electret properties of PLA. Here, we propose an electroactivity promotion methodology, involving the one-step synthesis and homogeneous incorporation of high-dielectric ZIF-8 nanosheets (ZIFNSs), to facilitate interfacial polarization and fiber refinement during electrospinning of PLA nanofibers. The preparative electrospun PLA/ZIFNS meta-membranes exhibited an unusual combination of significantly reduced nanofiber diameter (∼462 nm), enhanced surface potential (approaching 10 kV), and increased surface activity and facilitated the formation of electroactive phases. With well-controlled morphological features, the highly electroactive PLA/ZIFNS meta-membranes exhibited exceptional filtration efficiencies for PM2.5 and PM0.3 (99.2 and 96.0%, respectively) even at the highest airflow rate of 85 L/min, in clear contrast to that of its pure PLA counterpart (only 79.3 and 74.6%). Arising from the increased electroactivity and active contact sites, remarkable triboelectric performance and self-charging mechanisms were demonstrated for the PLA/ZIFNS meta-membranes, contributing to long-term efficient PM0.3 filtration (97.5% for over 360 min). Moreover, as triggered by physiological activities like respiration and speaking, the electroactive PLA/ZIFNS meta-membranes enabled real-time monitoring with high sensitivity and specificity. The proposed strategy affords significant promotion of electroactivity and triboelectric performance for PLA nanofibers, which may motivate the development of ecofriendly protective membranes for respiratory healthcare and real-time monitoring.
研究领域:
材料科学
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环境科学
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生物医学工程
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产品关联
DOI
PubMed
高影响因子
PEST MANAGEMENT SCIENCE
·
2023
·Vol. 79
·期 7
·2603-2610
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IF 4.1
Yue Ma,Kefei Zhao,Yi Ding,Shuai Wu,Xun Liao,Xianhui Yin,Zilu Li,Rongyu Li,Youhua Long,Fengpei Du
BACKGROUND Neonicotinoids are among the most essential chemical insecticides worldwide because of their high activity against many important pests and wide application. However, their application is limited by their toxicity to honeybees. Therefore, the development of a facile route to fabricate efficient and eco-friendly pesticide formulations is of great significance. RESULTS In this study, clothianidin-loaded zeolitic imidazolate framework-8 (CLO@ZIF-8) nanoparticles were fabricated by a facile one-pot route using zinc nitrate as a Zn 2+ source and characterized by scanning electron microscopy, transmission electron microscopy, X-ray diffraction, thermogravimetric analysis, energy-dispersive spectrometry and Fourier transform infrared spectroscopy. Based on the pH response of ZIF-8, a ‘burst release effect’ was observed for CLO@ZIF-8 at pH 3 and 5 within 12 h, in contrast to the slow and sustainable release at pH 8. CLO@ZIF-8 improved the retention ability of the pesticide liquid and remained 70% control efficacy on Nilaparvata lugens after water rinsed of sprayed CLO@ZIF-8. The pH response of CLO@ZIF-8 allowed it to maintain 43% control efficacy against N. lugens after 10 days of application, which was twice the efficacy of clothianidin solution (SCA). Moreover, CLO@ZIF-8 reduced the acute toxicity to honeybees ( Apis mellifera ) by ≥120-fold compared with SCA. CONCLUSION This study provides new insights into the application of ZIF-8 to neonicotinoids and suggests the need for the development of a biocompatible and eco-friendly pesticide formulation. © 2023 Society of Chemical Industry.
研究领域:
农药科学
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材料科学
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环境科学
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产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Chenming Liu,Jing Lyu,Nan Shi,Qingqing Cheng,Zengwei Liu,Yubing Xiong,Xuetong Zhang
The control of thermal radiation features of objects for the purpose of infrared stealth has aroused extensive research interests in recent years, however, long-term and highly efficient infrared stealth for hot object under sunlight is still a giant challenge. Herein, a Kevlar nanofibrous aerogel-based 3-layer tandem cloak for long-term restraining of the thermal emission was proposed. The top layer was fabricated by magnetron sputtering silver (Ag) on the upper side of Kevlar nanofibrous aerogel film (Ag|KNA), demonstrating high thermal resistance (8.68 K·W −1 ), low infrared emissivity (0.12) and high optical reflectivity (0.87). The middle layer was realized by incorporating of phase change paraffin wax (PW) into KNA film (KNA/PW), showing phase change enthalpy of 162 J·g −1 . The bottom layer was fabricated by sputtering Ag on the lower patterned side of KNA film (PKNA|Ag), illustrating low infrared transmittance (close to zero), high thermal reflectivity (0.94) and high thermal resistance (10.42 K·W −1 ). Then flexible tandem cloak was constructed via stacking these aerogel-based top, middle and bottom layers in sequence, showing long-term (up to 12 h), high-efficiency (radiation temperature difference less than 1 °C) hiding of thermo-model targets under heating and sunshining simultaneously. This work provides a promising strategy for designing more practical tandem cloak for infrared stealth applications.
研究领域:
材料科学
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物理学
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产品关联
DOI
高影响因子
Applied Materials Today
·
2025
·
IF 6.9
Zheng Yue Wang,Yuyang Cao,Lanyue Zhang,Ze Ping Zhang,Min Zhi Rong,Ming Qiu Zhang
Antifouling coatings, which have important value for submerged marine structures, are faced with the challenge of inherent conflicting property requirements, i.e. the topcoat is desirable to prevent adherence of marine organisms and the basecoat should be able to maximize bonding to the substrate. Besides, the existing antifouling coatings have other tricky problems, like easy depletion of liquid lubricant of slippery liquid-infused porous surface and poor static microbes resistance of hydrophobic surface. Herein, a facile solution is proposed using the newly developed reversibly interlocked polymer networks, which enables temporally and spatially controllable multiple antifouling actions. Aided by dynamic covalent chemistry, the immiscible crosslinked polymers carrying various components with unique functionalities are uniformly interweaved producing a novel non-sticky/sticky antifouling composite coating (NSCC). Consequently, a series of non-contact and contact antifouling strategies based on physical and chemical interactions are seamlessly combined with high cohesion and interfacial adhesion. Either the surface or the subsurface of the NSCC exhibits excellent resistance to protein and bacteria under both static and dynamic conditions. The properties of the NSCC comprehensively outperform those of the analogues reported in the literatures. From a practical perspective, the redundancy design has set up a novel paradigm for preparing long-lasting antifouling coating.
CAS / MDL:
研究领域:
材料科学
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海洋生物学
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表面化学
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产品关联
DOI
高影响因子
Nature Sustainability
·
2024
·
IF 25.7
Chen Chaohuang,Zhou Qianhai,Guo Zhongyuan,Li Hao,Miao Chen,Chen Du,Hu Xiaohong,Feng Xia,Noël Vincent,Ghoshal Subhasis,Lowry Gregory V.,Zhu Lizhong,Lin Daohui,Xu Jiang
Using nanoscale zero-valent iron (nFe 0 ) materials for heavy metal removal is a viable approach for in situ groundwater pollution remediation. However, conventional nFe 0 materials have indiscriminate reactivity towards various electron acceptors (for example, water) and just accumulate heavy metals onto the surface, which leads to poor selectivity and short longevity. Here we develop a lattice-sulfur-impregnated nFe 0 (S-nFe 0 ), achieving intraparticle sequestration of heavy metals enabled by a boosted Kirkendall-like effect. This metal-encapsulation approach outcompetes water for electrons and efficiently uses Fe-released spots, and the reacted S-nFe 0 becomes inert to release metals (78–220× less than nFe 0 ) in real groundwater matrices. The treated groundwater is estimated to meet drinking-water standards with a longevity of over 20–100 years. The synthesis of S-nFe 0 has negligible environmental impacts according to Biwer–Heinzle environmental evaluation results. S-nFe 0 also shows competitive production and operation costs for metal-contaminated groundwater remediation. Overall this work presents a strategy for achieving metal encapsulation in nFe 0 , which breaks the reactivity–selectivity–stability trade-offs of redox nanomaterials, providing a powerful tool to tackle groundwater pollution.
研究领域:
环境科学
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材料科学
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化学工程
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水资源管理
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产品关联
DOI
高影响因子
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