ACS Applied Engineering Materials
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2025
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IF 3.5
Ximing Zhong,Yue Hong,Wenchao Min,Chao Chen,Guowei Liang,Xizhi Zhang,Hua Xu,Hongjun Zhou,Xinhua Zhou
In this work, a biobased cationically photocurable omniphobic coating system was effectively developed via a facile strategy by using epoxidized soybean oil as a biomass coating precursor, tetrakis [(epoxycyclohexyl) ethyl] tetramethylcyclotetrasiloxane as an effective cross-linking agent, and polydimethylsiloxane as an omniphobic agent to provide coatings with low surface energy. Due to the rational design of this coating system, no extrinsic organic solvent was added, and 20 s ultraviolet radiation was sufficient for coating curing. The as-prepared omniphobic coatings were highly optically transparent and mechanically robust, and they also possessed exceptional liquid repellency and chemical shielding durability against various contaminants and corrosive agents. Besides, these coatings exhibited remarkable self-cleaning performance and also could be appropriately used for anti-ink, antigraffiti, and antifingerprint purposes. In addition, they could be applied for fabricating functional noctilucent coatings and bestowed them with an omniphobic property. More strikingly, this coating system could be cured via sunlight exposure without compromising the omniphobic property, enabling these coatings to be availably applicable for various substrates, including the thermosensitive ones. Therefore, the features of facile preparation, short curing duration, and optional curing strategy, in addition to above versatile functions, make these biobased omniphobic coatings tremendously promising for practical applications.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
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2025
·Vol. 142
·期 22
·e56947
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IF 2.8
Li Gao,Haihong Gu,Chao Ye,Chunxia Wang,Zimin Jin
A superhydrophilic polylactic acid (PLA) fiber membrane was fabricated by developing a hydrophilic silica surface layer on electrospun fibers. The drawn fibers were twisted and activated in an ethanol solution, leading to the shrinkage of the membrane and enhancing surface hydrophilicity, as well as reducing the pore size of the membrane. Through the coupling of 3-aminopropyltriethoxysilane, silica was polymerized in situ on the fiber surface of the electrospun PLA membrane to achieve a superhydrophilic surface. The membrane underwent degradation in a sodium hydroxide aqueous solution at a rate of 2.240 min −1 . The membrane was employed for separating surface-stabilized oil-in-water emulsions. The oil droplet sizes in the filtrates were 93, 169, and 132 nm, respectively. The water flux of the membrane for ionic oil-in-water emulsions reached 3205 L·m −2 ·h −1 , attributed to the electrostatic effect on the membrane surface (35.35 eV) and the sieving effect of the pore channel (0.918 μm). In contrast, the water flux for nonionic emulsions was only 350 L·m −2 ·h −1 . Furthermore, after immersing the membrane in the hydrolysis of tetraethyl orthosilicate again, the oil retention rate remained at 98.6%, and the water flux recovery rate was sustained at 96.3% over 30 cycles of separating oil-in-water emulsion.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Bingfan Li,Xiaowen Qian,Wenbo Wu,Shiyuan Liu,Shijun Wu,Jiang Han,Yong Han,Chao Yang,Tifeng Jiao
Plastic pollution and the treatment of oily wastewater have become significant challenges in the field of environmental protection. This study presents a method for fabricating electrospun membranes from waste polyethylene terephthalate (PET) beverage bottles, which are surface-modified by co -depositing tea polyphenols (TP), 3-aminopropyltriethoxysilane (APTES), and tetraethoxysilane (TEOS). The resulting superhydrophilic membrane, denoted as PET-T-100, exhibits excellent mechanical properties and structural stability due to the optimization of precursor solution composition and electrospinning parameters. The modified membrane shows a water contact angle of 0° in air and an underwater oil contact angle of 161°, demonstrating outstanding wettability. In oil-water separation experiments, PET-T-100 achieves a separation efficiency of over 99.5 % for various oil-water mixtures, and over 98 % for emulsions, maintaining stable wettability and separation performance even in harsh acidic, alkaline, and saline environments. This study provides an efficient and environmentally friendly approach for the high-value utilization of waste PET and offers a novel strategy for the development of high-performance oil-water separation membranes and environmental remediation technologies.
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SEPARATION AND PURIFICATION TECHNOLOGY
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2025
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IF 9
Chen Chen,Yanying Zhao,Xiaofei Duan,Jun Yang,Linlin Yan,Yingjie Zhang,Xiquan Cheng
Polymeric nanofibrous membranes attract significant interest in oil/water separation due to high porosity, tunable pore size and customizable surfaces, while their intrinsic hydrophilicity deficits compromise their separation performance and anti-fouling properties. Owing to its intrinsic hydrophilic nature and biocompatibility, polyvinylpyrrolidone (PVP) is commonly used to improve antifouling performance. However, the excessive hydrophilicity of PVP hinders its structural integrity, preventing its widespread deployment in aqueous environments. Herein, a metal-phenolic network (Tannic acid-Ca 2+ , TA-Ca 2+ ) was used for hydrogen-bonding assembly with PVP to design freestanding membrane material. Subsequently, the coordination assembly of natural phytic acid (PA) endowed the membrane a potent hydration barrier against oil-fouling and enhanced mechanical strength by 491 %(1.83 → 9.03 MPa). The resulting nanofiber membrane exhibited intrinsic superhydrophilicity and good swelling stability, achieving 2.9 × 10 4 L·m −2 ·h −1 ·bar −1 permeability for oil/water emulsions with separation efficiency above 99.7 % under gravity (∼1 KPa). Moreover, through altering coordination metal ions, a series of self-assembly PVP-based membranes can be constructed with both internal and external super-wettability, providing a source of inspiration for the development of advanced separation membranes with high separation efficiency, long-lasting anti-fouling properties, and low energy consumption.
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ACS Applied Nano Materials
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2025
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IF 5.5
Xianghai Liao,Hanye Cai,Lei Wu,Dongming Qi,Kai Chen
Carbon nanofiber membranes (CNFMs) have broad application prospects in the field of oil–water separation due to their excellent stability, energy-saving properties, lack of secondary pollution, and high efficiency. However, the hydrophobicity, lipophilicity, and brittleness of carbon materials limit the application of CNFMs in oil–water separation. In this study, polyacrylonitrile (PAN), poly(lactic acid) (PLA), and lignin were used as raw materials for electrospun membranes. CNFMs were obtained by carbonizing the electrospun membranes, while PLA was thermally decomposed during heat treatment to form pores. The relationship between the pore structure and CNFM flexibility has been well discussed. When the ratio of micropores to mesopores approaches 1:1, Young’s modulus reaches 124.61 MPa after optimizing the heat treatment process. Lignin was introduced to improve the hydrophilicity of CNFMs due to its high hydrophilic group content. The contact angle test shows that CNFMs exhibited superhydrophilicity (water contact angle, WCA = 0) and excellent hydrophobicity (oil-in-water contact angle, OCA = 149.5°). The gravity-driven penetration test and total organic carbon (TOC) content analysis indicate that the separation efficiencies of the CNFMs for nonemulsified oil–water and emulsified water-in-oil mixtures were 99 and 97%, respectively. The TOC value of water separated by CNFM is 38.6 mg/L, which reaches the direct emission standards of the petrochemical industry in the integrated wastewater discharge standard (GB 8978-1996). This strategy has significance for designing simple, efficient, and green oil–water separation membranes.
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高影响因子
Journal of Environmental Chemical Engineering
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2025
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IF 7.2
Liya Wang,Kaiming Peng,Di Zhao,Xinyuan Peng,Xiangfeng Huang,Jia Liu,Chen Cai,Jing Kang,Shiyang Li
Hydrophobic sponges have been identified as a promising material for the recovery of floating or dispersed oil, but they still face challenges in recovering oil from surfactant-stabilized emulsions. In this study, the melamine sponge (MS) was modified with Fe 3 O 4 magnetic particles (MPs), forming a hydrophobic sponge skeleton interspersed with superhydrophilic particles, denoted as MP@MS. The hydrophilic sites of the sponge can attract and capture the emulsified oil droplets with the hydrophilic ends of the surfactants stretching into the aqueous phase; then oil droplets spread along the hydrophobic skeleton; thereby recovering surfactant-stabilized emulsified oil droplets. To prepare the dual-wettability sponge, dopamine/polyethyleneimine (DA/PEI) was used to achieve hydrophilic modification of MPs, hydrophobic modification of MS, and bond them together synchronously by a facile one-pot synthesis. Compared with traditional hydrophobic sponges, the separation efficiency for surfactant-stabilized emulsions treated by MP@MS can increase from 5 % to approximately 90 %. MP@MS can effectively capture both anionic and nonionic-stabilized emulsified oil droplets, among which, the controlled continuous capture can be realized for oil droplets stabilized by nonionic surfactant. Furthermore, nonionic surfactant-coated oil droplets were verified through molecular dynamics (MD) simulations that they were more likely to detach from hydrophilic sites, and in this process remove surfactant molecules. This was conducive to exposing the hydrophilic sites promptly and thus demulsifying continuously. The new design principles and processing strategies will support the development and application of materials with dual-wettability structures in many fields, such as oil recovery, smart separation, and liquid manipulation.
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高影响因子
Materials Today Chemistry
·
2025
·
IF 6.7
Qingbo Xu,Jinlong Zhang,Zheng Wu,Supeng Zhang
Superhydrophobic polyethylene terephthalate (PET) fabrics hold significant potential applications in fields of self-cleaning, oil-water separation, and anti-icing. However, several challenges, such as complex preparation procedures, significant modifications to the intrinsic material properties, and insufficient durability, have restricted their practical application. To address the aforementioned challenges, this study initially dissolved a silane coupling agent, fumed silica (SiO 2 ) particles, and polydimethylsiloxane (PDMS) in chloroform to prepare the finishing solution. Subsequently, the finishing solution was applied to PET fabric via the pad-dry-cure process, thereby forming a superhydrophobic layer on the fabric surface. The modified PET fabric exhibits excellent superhydrophobic performance, with a water contact angle (WCA) was reached to 156.5° ± 0.8°. In addition, even after undergoing 800 abrasion cycles or 50 laundering cycles, the modified PET fabric retains its superhydrophobic properties without significant degradation, demonstrating excellent mechanical durability. The durable superhydrophobic surface on the modified PET fabrics facilitates their expanded application in fields of apparel and industrial textiles.
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高影响因子
ACS Applied Polymer Materials
·
2025
·
IF 4.7
Mochou Liu,Huixia Xu,Limei Liu,Xia Han,Honglai Liu
The persistent challenge of treating oily wastewater from industrial effluents and environmental spills demands advanced separation materials with sustainable antifouling capabilities. While superwetting interfaces show promise in oil/water separation, the long-term stability and fabrication complexity of functional coatings remain critical limitations. This study presents a systematic comparison of two surface engineering approaches for stainless-steel meshes (SSMs): (1) terminal anchoring of dopamine-end-functionalized amphiphilic copolymers versus (2) self-assembly mediated codeposition of polymer–dopamine complexes. Through controlled integration of zwitterionic moieties and hydrophobic segments, both strategies create hierarchically structured surfaces combining strong hydrophilicity with oil-repellent characteristics. The results reveal that the codeposited PDA–PMB30 coating achieves superior hydration capacity through three-dimensional polymer networking, while the terminally anchored PMBD70 system demonstrates enhanced hydration stability via covalent grafting density optimization. In practical testing, both modified SSMs maintain exceptional separation efficiencies (96% for PDA–PMB30, 93% for PMBD70) through 20 operational cycles, outperforming all other coating systems in durability metrics. The synergistic combination of bioinspired adhesion mechanisms and amphiphilic balance endows these meshes with unique antifouling resilience, showing >96% separation efficiencies and stable performance in high salinity (1 M NaCl), strong acidity (pH = 1), and strong alkalinity (pH = 14) environments. This work establishes fundamental structure–property relationships between surface grafting architectures and separation performance, providing actionable insights for designing robust oil/water separation systems for petrochemical wastewater treatment and marine spill remediation.
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高影响因子
危险品化学品经营许可证（带存储）