LANGMUIR
·
2025
·
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
✓ 已验证
产品关联
DOI
PubMed
高影响因子
DESALINATION
·
2024
·
IF 8.3
Wenting Li,Mengdi Chen,Ganwei Zhang,Weicai Chen,Lei Zhang,Shusu Shen,Dapeng Liu,Xiaoji Zhou,Yaoliang Hong
The DCMD technology for wastewater treatment is very promising. However, it is easily suffered by membrane fouling and wetting. In this study, a Janus membrane was fabricated by coating polyvinylamine (PVAM) and gallic acid (GA) onto one side of a PVDF composite membrane, which another side is covered with POTS-SiO 2 . The PVAM and GA side could bind water to form a hydration layer, thus repel the contaminants. The POTS-SiO 2 side was superhydrophobicity and prevented the membrane wetting. Finally, The Janus membrane presented exceptional performance in separating salt containing emulsified oil by DCMD. It kept a stable flux of 17.0 ± 0.2 Kg·m −2 ·h −1 and a low level conductivity of 0.60 ± 0.02 μS/cm in the cold side during the 36 h DCMD procedure, compared with the pristine PVDF membrane and the PVDF/POTS-SiO 2 membrane. The results presented simultaneously antifouling and antiwetting properties of the Janus membrane. While the Janus membrane can be well used in desalination of emulsified oil containing salt, it has a great potential for application to treat other complex wastewater.
研究领域:
环境工程
·
膜科学
·
水处理
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Xiang-Tao Xuan,Hui Zhang,Hong-Li Wang,Jia-Le Yao,Jun Xu,Qiu-Ling Che,Yi Wang
Superhydrophobic textiles based on cellulose, a key biological macromolecule, are highly desirable for applications in extreme environments. In this study, we develop a multifunctional cellulose-based cotton fabric ( Gossypium hirsutum L.) by applying a facile one-step hydrothermal coating method, integrating covalent organic frameworks (COFs), silica nanoparticles (SiO 2 ), and perfluorooctyltrichlorosilane (POTS) onto the fiber surface to form a robust CF-COF/SiO 2 /POTS composite coating. The hierarchical micro/nanostructure modifies the cellulose surface, achieving a water contact angle of 155.4 ± 0.9° and a sliding angle of 7.9 ± 0.7°. Modern analytical techniques, including Fourier-transform infrared spectroscopy, X-ray photoelectron spectroscopy, and scanning electron microscopy, confirm the molecular interactions between cellulose and the coating, revealing enhanced surface stability. The coated cellulose fabric exhibits robust chemical stability across acidic (pH 2), alkaline (pH 12), and saline (1 mol/L NaCl) conditions, mechanical durability after 50 adhesion-peeling cycles, five laundering cycles, and 820 h of sunlight exposure, and effective anti-icing behavior with reduced ice adhesion and rapid superhydrophobicity recovery post-icing (−18 °C, 12 h) via mild heating (60 °C, 5 min). Notably, the fabric undergoes an irreversible color change under UV–visible irradiation (300–1100 nm, 133.4 mW/cm 2 ), with spectroscopic analyses indicating photochemical oxidation of hydroxyl groups, yet retaining superhydrophobicity. This work presents a novel strategy for functionalizing cellulose-based textiles, offering durable self-cleaning, anti-icing, and photochromic properties for applications in protective clothing, outdoor gear, and anti-counterfeiting systems.
研究领域:
材料科学
·
纺织工程
·
表面化学
·
纳米技术
·
功能涂层
·
智能材料
✓ 已验证
产品关联
DOI
PubMed
高影响因子
FIRE SAFETY JOURNAL
·
2020
·
IF 2.295
Junchao Zhao,Song Lu,Yangyang Fu,Muhammad Usman Shahid,Heping Zhang
Ultra-fine dry chemicals, as an effective fire suppressant, may have higher fire extinguishing efficiency and the ability to inhibit pool fires re-ignition after oil-repellent treatment. Thus, we used two surfactants , i.e. POTS (1H,1H,2H,2H-perfluorooctyltrimethoxysilane) and OBS (Sodium perfluorononyloxybenzenesulfonate) to modify fine sodium bicarbonate and studied the effect of POTS/OBS compound ratios on powders oil-repellency. SEM images revealed the structures of the modified powders, and XPS confirmed that the modifiers were successfully grafted on the surface of powders. The fire extinguishing experiments showed that the dry chemicals after modified would have higher fire extinguishing efficiencies, especially after OBS added. Furthermore, the isolation layer formed by modified powders was observed on the fuel surface after fire extinguishing, which would effectively inhibit the re-ignition of aviation kerosene.
研究领域:
消防工程
·
材料科学
·
化学工程
✓ 已验证
DOI
高影响因子
DESALINATION
·
2017
·
IF 5.527
Zhihao Xu,Zhen Liu,Pengfei Song,Changfa Xiao
The main aim of the current study is to prepare super-hydrophobic polypropylene hollow fiber membranes . However, polypropylene hollow fiber membrane surface is very smooth and difficult to attach silica particles . To solve this problem, a method including combined use of silica particles and polypropylene solution is used to preparation the super-hydrophobic coatings. The collosol mixed by the silica particles and PP particles were coated to the membrane surface. Then the membrane was modified by 1H,1H,2H,2H-Perfluorooctyltriethoxysilane (POTS) that exhibited a super-hydrophobic surface with a static water contact angle of 157°. Surface elemental analyses of membrane were characterized by XPS and surface analyses (FT-IR, FESEM, AFM , contact angle measurements and MIP). In addition, membrane distillation experiments of NaCl solutions were carried out in unmodified and modified polypropylene hollow fiber membrane. The results indicated that, compared with the untreated membranes, the modified membranes had higher flux and rejection.
研究领域:
材料科学
·
环境工程
✓ 已验证
产品关联
DOI
高影响因子
Nanoscale
·
2021
·Vol. 13
·期 7
·4177-4187
·
IF 7.79
Rui Feng,Zhengwang Zhu,Yang Liu,Shaokun Song,Yang Zhang,Ye Yuan,Ting Han,Chuanxi Xiong,Lijie Dong
Flexible magnetoelectric (ME) nanocomposites with a strong coupling between ferromagnetism and ferroelectricity are of significant importance from the point of view of next-generation flexible electronic devices. However, a high loading of magnetic nanomaterials is needed to achieve preferable ME response due to the size mismatch of the magnetostrictive phase and piezoelectric phase. In this work, ultra-small CoFe2O4 nanoparticles were prepared to match the size of the polar crystal in poly(vinylidene fluoride-trifluoroethylene) (P(VDF-TrFE)), and 1H,1H,2H,2H-perfluorooctyltriethoxysilane (POTS) is introduced to enhance the interplay between P(VDF-TrFE) and CoFe2O4. The above multiple effects promote a good connection between the magnetostrictive phase and the piezoelectric phase. Therefore, an effective transference of stress from CoFe2O4 to P(VDF-TrFE) can be achieved. The as-prepared P(VDF-TrFE)/CoFe2O4@POTS exhibits a high ME coupling coefficient of 34 mV cm−1 Oe−1 when the content of CoFe2O4@POTS is 20 wt%. The low loading of fillers ensures the flexibility of ME nanocomposite films.
研究领域:
材料科学
·
电子工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SURFACE AND INTERFACE ANALYSIS
·
2022
·Vol. 55
·期 4
·279-287
·
IF 1.702
Mengnan Qu,Bin Zhang,Yandong Wang,Yanqing Lv,Jianwei Ge,Yaxin Wu,Min Yan,Lei Shen,Jinmei He
Wettability is an important property of solid surfaces, superwetting materials can be prepared by controlling the surface morphology and surface energy. In recent years, superwetting materials have been researched and used widely in the fields of self-cleaning, anti-fogging, microfluidics, and oil–water separation, but few studies about superwetting materials in chemical reactions have been conducted. In the multiphase reaction, the low solubility and diffusion rate of gas lead to inferior mass transfer, which restricts the reaction kinetics and reduces the reaction rate. Therefore, it may be a breakthrough to make the solid surface obtain underwater superaerophilicity. In this paper, 1H,1H,2H,2H -perfluorooctyltriethoxysilane (POTS) with low surface energy was constructed on the palladium-carbon nanotubes (Pd-CNTs), as-prepared Pd-CNTs/POTS composite has excellent hydrophobicity and underwater superaerophilicity. When Pd-CNTs/POTS composite was utilized in the catalytic hydrogenation, Pd-CNTs/POTS composite shows higher catalytic activity than Pd-CNTs; the higher catalytic performance is attributed to the underwater superaerophilicity, which enables gaseous hydrogen to rapidly accumulate on the surface of material, increasing the gas–liquid–solid reaction interface formed. The strategy looks forward to providing a new way for developing novel and efficient heterogeneous catalysts and reaction systems.
研究领域:
材料科学
·
催化化学
✓ 已验证
产品关联
DOI
高影响因子
SURFACE & COATINGS TECHNOLOGY
·
2026
·
IF 6.9
Xiaoyan Guo,Lei Wu,Qiuyan Ye,Yingjie Lv,Nan Wang,Jiaqiao Li,Jiaxu Zhang,Yiku Xu,Yongnan Chen,Yiming Chen
Although micro-arc oxidation (MAO) coatings improve the mechanical properties of titanium alloys, their porous structural defects tend to act as pathways for corrosive agents and as adhesion sites for contaminants. In this study, a superhydrophobic coating was developed on TC-4 titanium alloy by combining in-situ hydrothermal synthesis of ZIF-8 with POTS surface modification, thereby forming a rough surface with low surface energy. The POTS/ZIF-8@MAO composite coating exhibits strong adhesion to the substrate through both physical and chemical bonding. Consequently, it demonstrates excellent chemical and thermal stability, maintaining a water contact angle (WCA) of 156.53° ±2.47° and a sliding angle (SA) of 6.32° ±1.16° even under extreme conditions. Due to its low water adhesion, the coating demonstrates significant self-cleaning ability against both solid and liquid contaminants. Electrochemical analysis reveals that it improves corrosion inhibition by up to 99% compared to pristine MAO-treated titanium alloy, providing an effective protective barrier for the substrate. This work proposes a promising strategy that may potentially expand the application scope of titanium alloys.
✓ 已验证
产品关联
DOI
高影响因子
Environmental Science-Nano
·
2019
·Vol. 6
·期 4
·1259-1266
·
IF 7.704
Hanchen Ye,Dongyun Chen,Najun Li,Qingfeng Xu,Hua Li,Jinghui He,Jianmei Lu
The discharge of large amounts of oily wastewater causes serious environmental pollution and is a threat to human health. It is therefore necessary to develop products to deal with the challenges posed by such wastewater discharges. One important area is the separation of oil/water emulsions. In this study, a modified multi-walled carbon nanotube film was fabricated. Polydivinylbenzene decoration and a POTS (1H,1H,2H,2H-perfluorooctyltriethoxysilane) layer were formed by a solvothermal method and chemical vapor deposition, respectively. The film had outstanding superhydrophobicity and demulsification, separated water-in-oil emulsions with high efficiency (99.98% for water-in-chloroform emulsion), and high reusability (above 99.7% after 20 cycles). Because of its self-healing ability, the film can maintain its superhydrophobicity after severe damage caused by O2 plasma treatment. These features make the film suitable for practical sewage treatment. The self-healing mechanism is also discussed in this article.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF INORGANIC BIOCHEMISTRY
·
2021
·
IF 4.155
Kun Chen,Yuan Liu,Mu Li,Lu Liu,Qiang Yu,Long Wu
Here we show that Preyssler-type polyoxotungstates (Preyssler-type POTs, [NaP 5 W 30 O 110 ] −14 ) complexed with peptides can prevent the dysbiotic expansion of anaerobic bacteria of the Enterobacteriaceae family. In a dextran sulfate sodium (DSS)-induced colitis model, symptom remission of C57BL/6 J mice with colitis is achieved by orally treated with POT complexes. Ten days of daily administration of POT complexes reduces 5% body weight loss and the mRNA levels of proinflammatory markers (77% reduction for Il6 , 73% reduction for Tnf , 91% reduction for Cxcl1 ) in the caecum and proximal colon. Bacterial population analysis reveals that these Enterobacteriaceae population in the caecal content decline by one order of magnitude after administration of POT complexes. POT complexes exert anti-inflammatory effects indirectly on the host immune system by inhibition of malignant expansion of anaerobic Enterobacteriaceae during gut inflammation. Furthermore, POTs show negligible effect on bacterial growth in vitro, healthy mice and their microbiota composition under homeostatic conditions. Rationally designed POT complexes will provide distinctive approach to improve enteric bacteria dysbiosis-associated gut inflammation by balancing bacterial communities.
研究领域:
微生物学
·
免疫学
·
胃肠病学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2019
·
IF 7.015
Yunzhe Jiang,Chuanyao Liu,Yanhong Li,Aisheng Huang
This work reports the preparation and post-synthetic modification of COF named BTADHBD with perfluorooctyltriethoxysilane (POTS) to obtain a superhydrophobic COF coating. Through post-synthetic modification, the water contact angle (CA) of BTADHBD is increased from 83.7° to 153.2° without change of crystals morphology and structure. BTADHBD COF coating was prepared on the stainless steel net (SSN) through repeated growth, followed by post-synthetic modification using (±)-glycidol (Glc) and POTS to obtain the SSN-supported superhydrophobic BTADHBD@Glc@POTS coating with a water CA of 152.1°. The superhydrophobic BTADHBD@Glc@POTS coating showed high water-resistance, self-cleaning property and oil/water separation performance using simply gravity as driving force. For various oil/water mixtures, the oil/water separation efficiency was always up to 99.5% with oil flux above 70 L/(m 2 ·s). For 50 successive cycles of oil/water separation, the high oil/water separation efficiency (above 99.5%) remained unchanged, which is very promising for oil/water separation.
研究领域:
材料科学
·
化学工程
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2024
·
IF 7.4
Jinyue Yang,Zhanjian Liu,Jing Jing,Xiguang Zhang,Yuxin Fu,Meiling Li,Huaiyuan Wang
Design functionalized absorbent materials that fulfillment complex requirements in sophisticated water-treatment fields remains challenging. In this paper, a novel superhydrophobic/superoleophilic sponge with flower-like channel structures and a photodegradation functionality was fabricated via in-situ chelation of zinc oxide (ZnO) and nano-Ag particles. After low surface energy modification with POTS, the as-prepared sponge displayed remarkable superwettability, with a water contact angle (WCA) of 158.8° ± 1.3°. This endowed it with the ultrafast, selective absorption of diverse oils that are 33.9–135.2 times of their own weight. The prepared sponge’s emulsified oil separation efficiency can reach 99.87%, owing to its superhydrophobic/superoleophilic properties and the electrostatic attraction demulsification, guiding effect of ZnO layer crystal plane. Furthermore, the construction of Schottky barrier at the ZnO@Ag interface reduced the recombination rate of photoexcited electrons and electron-holes. Thereby, the prepared sponge’s photodegradation efficiency reached up to 97.07% after 4 h sunlight irradiation. Notably, the stress attenuation of the prepared sponge was only 14.6% after 100 absorption cycles, indicating its excellent mechanical stability. Moreover, the prepared sponge showed excellent environmental tolerance under severe conditions with its WCA stably exceeding 150.0°. Thus, this durable superwetting sponge can be effectively used for oil/water emulsion separation and organic pollutant degradation.
研究领域:
环境科学
·
材料科学
·
水处理
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）