Surfaces and Interfaces
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2025
·
IF 6.3
Fengqin Li,Yang Zhou,Yuxue Hu,Xiaoming Feng,Guizhong Tian
Marine biofouling is a significant threat to the economic efficiency and sustainable development of global marine industries. Conventional antifouling coatings, which rely on a single antifouling mechanism, struggle to adapt to complex marine environments. The challenge of seamlessly integrating multi-level antifouling strategies into coatings through a facile approach remains unresolved. This study innovatively developed a super slippery drug-loaded nanofiber composite coating with dynamic interfacial regulation capabilities through an integrated electrospinning-electrospray in situ process. A biodegradable polymer, poly(ε-caprolactone) (PCL), served as the electrospinning base material, into which the eco-friendly antifoulant DCOIT (4,5-dichloro-2-n-octyl-4-isothiazolin-3-one) was incorporated during fiber formation, constructing a porous drug-loaded nanofiber matrix. Concurrently, in situ electrospray was employed to dynamically deposit silica (SiO₂) nanoparticles onto the nanofiber surfaces, forming a modified porous matrix. Subsequent infusion of lubricant oil produced a super slippery drug-loaded modified film (SSLID). The modified film demonstrated excellent hydrophobicity and antifouling performance, achieving synergistic multi-level antifouling effects. This fabrication strategy provides an efficient and adaptable approach for developing functional composite coating films, offering broad application prospects in marine antifouling technologies.
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ACS Sustainable Chemistry & Engineering
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2025
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IF 7.3
Lizhi Zhao,Xiaofu Wang,Lixian Wang,Shuhao Chen,Guangyue Du,Baitao Xu,Hui Ye,Qingping Xin,Yuzhong Zhang
The scarcity of freshwater resources has emerged as a significant challenge for humanity. Fog harvesting, a process that converts atmospheric fog into readily accessible water, presents a promising solution. However, the surfaces currently developed for fog collection still face the problems of low efficiency and poor stability. To address these issues, this study designed a biomimetic hydrophobic slippery-superhydrophilic (SLIPS-SHPH) patterned surface. The surface was fabricated by a masked spray coating and lubricant infusion. By refining the pattern design, the wedge-shaped SHPH patterns, with a smaller size and an optimized total area ratio to SLIPS in a dispersed arrangement, were created. The SLIPS-SHPH integrates beetle- and cactus-spine-inspired SHPH patterns for fog accretion/droplet motion and pitcher-plant-mimicking SLIPS for droplet delivery/detachment. This synergy enables an efficient cycle of “fog capture-droplet transport-droplet release”, and achieves a water collection efficiency of 2462 mg·h–1·cm–2, 1.75 times that of the homogeneous hydrophobic surface. Notably, the SLIPS-SHPH patterned surface demonstrates excellent stability over a 120 h testing period owing to the stable water repellence of SLIPS. The research on the multilevel biomimetic strategies and pattern regulation provides a feasible way for efficient and sustainable fog collection.
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APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Jiqun Li,Yan Zhang,Shiyu Song,Yifan Ma,Jianlin Yang
Membrane separation technology offers an ideal strategy for the efficient separation of emulsified oily wastewater by constructing superhydrophilic coatings on porous substrates. However, coatings exhibit more susceptible to fouling, leading to a decline in separation performance. Herein, a robust and durable superhydrophilic polydopamine/polyethyleneimine (PDA/PEI)-MgCO 3 mineralized coating with resistance to crude-oil fouling was successfully developed via co-deposition coupled with biomineralization. The mineralization effect of the PDA/PEI adhesive layer and organic dextran enabled uniform dispersion of inorganic MgCO 3 nanocrystals across PDA/PEI co-deposited substrates. More importantly, polypropylene membrane with PDA/PEI-MgCO 3 coating exhibited high separation flux (>925 L m −2 h −1 bar −1 ), exceptional efficiency (99.6 %), and long-term stable cyclic separation capability (98.9 % flux recovery) for crude-oil-in-water emulsions containing surfactant. Anti-crude-oil-fouling mechanism of the mineralized coating was further elucidated using density functional theory calculations. There is a strong adsorption interaction between the CO 3 2− in MgCO 3 and water molecules, demonstrating excellent hydration capacity. The synergistic effect of the hydrophilic CO 3 2− functional groups in the mineralized coating and the surface nanocomposite structure significantly enhances its hydration capacity, exhibiting exceptional resistance to crude-oil fouling. Additionally, the PDA/PEI-MgCO 3 coating demonstrates excellent chemical durability and prolonged stability, showing its strong potential for large-scale treatment of emulsified crude-oil-containing wastewater.
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ANALYTICAL CHEMISTRY
·
2025
·
IF 6.7
Yijing Yang,Qianchen Rui,Xiao Yan,Xun Zhu,Dingding Ye,Yang Yang,Hong Wang,Rong Chen,Qiang Liao
Herein, we propose a novel optical strategy for stable water droplet trapping in an immiscible oil phase by using a 1550 nm focused laser beam. Distinct from conventional optical strategies, this approach leverages a local photothermal effect-induced flow field surrounding the water droplet in the oil phase to achieve stable droplet trapping without prolonged interaction between the laser and the water droplet, allowing for low-temperature operation. This feature effectively minimizes potential thermal damage risks and thereby preserves the viability of samples within the droplet, which is particularly promising for biological applications. By analyzing the force balance in vertical and horizontal directions, the trapping sites are predicted, and the results agree well with experimental data. Remarkably, the local photothermal effect-induced flow field imparts rotational momentum to the water droplet, enabling self-rotation of the trapped droplet, which enhances the internal mixing efficiency. This unique feature is demonstrated by the synthesis of gold nanoparticles and E. coli cultivation. This optical strategy allows for highly precise droplet manipulation, eliminating physical contact with solid surfaces, thereby avoiding contamination risks and ensuring lossless transfer. This work presents an innovative optical strategy for droplet trapping in an immiscible phase, holding promise for various applications.
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ACS Applied Nano Materials
·
2025
·
IF 5.5
Ming Qian,Lei Song,Zefan Huang,Xiucheng Hu,Yunpeng Bai,Yukun Chen,Na An,Haipeng Sun
Bacterial antibiotic resistance poses a global threat to public health, highlighting the urgent need for innovative antimicrobial strategies. Zinc-based nanomaterials have shown promise in antibacterial treatments but are often limited by their low antimicrobial efficiency and poor biocompatibility. In this study, we propose a synergistic antibacterial approach that utilizes the Trojan horse effect through nanocomposites. By exploiting bacterial dependence on Fe3+, we introduce Ga3+ as a substitute, disrupting bacterial growth from within. Utilizing a ZIF-L carrier to load indocyanine green (ICG), we achieve targeted delivery of ICG, which generates ROS under light irradiation, effectively eradicating methicillin-resistant Staphylococcus aureus biofilms. In addition, the combined application of Zn2+ and Ga3+ effectively inhibits the growth of Porphyromonas gingivalis, providing complementary synergistic damage to bacteria from the inside out. This combined approach, integrating Zn2+, the Trojan horse mechanism, and photodynamic therapy, offers a promising therapeutic strategy against bacterial antibiotic resistance.
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Plasmonics
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2025
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IF 4.3
Li Zhoujie,Liu Ting,Lin Zhipeng,Liu Jie,Song Zhaojun
To achieve a compact and robust structure, a reflective optical fiber surface plasmon resonance (SPR) sensor is proposed for the simultaneous measurement of glucose concentration and temperature. The fiber probe uses the multimode optical fiber-single mode optical fiber-multimode optical fiber (MSM) heterojunction structure, in which the region with a gold film is used to sense glucose concentration, while the other region with a gold film and a polydimethylsiloxane@gold (PDMS@Au) composite is used to sense temperature. A silver film for light signal reflection is coated on the end face of the fiber probe to improve the signal-to-noise ratio (SNR). The sensor successfully overcomes cross-sensitivity and achieves sensitivities of 3.05 nm/% and − 1.69 nm/°C for glucose concentration and temperature, respectively. The proposed sensor can realize high-precision sensing of glucose and other biological analytes with temperature compensation. In addition, the reflective sensing structure makes the system compact and flexible, which enables remote detection and in-situ monitoring. The proposed sensor has a wide range of applications in the fields of food safety, biochemistry, and environmental monitoring.
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CHEMICAL ENGINEERING SCIENCE
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2025
·
IF 4.3
Ranying Jiang,Haozhe Yi,Daofan Ma,Taotao Fu,Chunying Zhu,Guangwei Wang,Youguang Ma
The droplet adsorption has many potential applications in microchemical engineering process, vesicle preparation and other various fields. However, the study on adsorption mechanisms and enhancement method remains still scarce so far. The droplet adsorption at the liquid–liquid interface relies primarily on the lubrication pressure in the liquid film, which determines the operating range of adsorption. The interaction between nanoparticles and surfactants distributed in two distinct phases could greatly affect the stability of the liquid film, thereby facilitating the droplet adsorption. In this study, a liquid–liquid–liquid three-phase system is constructed and the enhancement effect of interaction between nanoparticles and surfactants on the droplet interface adsorption process is visually investigated. The influences of the nanoparticle size on the interfacial dynamics and the operating range of droplet adsorption are studied systematically, and the adsorption and enhancement mechanisms are explored. It is found that the electrostatic interaction between PS-COOH NPs and PDMS could promote the rupture of the liquid film. The dense arrangement of nanoparticle-surfactant monolayer at the interface would hinder the evolution of the adsorption interface. Appropriate increase in the size of nanoparticles could facilitate the droplet adsorption process.
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CHEMICAL ENGINEERING SCIENCE
·
2025
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IF 4.3
Tao Zhang,Yumian Liu,Jiahe Ru,Yan Pang,Chunqing Zha,Jun Li,Xiang Wang
The behavior of neck breakup and the prediction of droplet volume during Janus droplet generation are investigated experimentally. The generation processes of Janus droplets can be divided into four distinct stages: the uniform extension stage, the accelerated extension stage, the radial necking stage and the rapid breakup stage, while the first two stages represent the filling stage of the droplet tip. Under varying continuous phase flow rates, the diameter of the droplet neck has the uniform evolution with time, and the droplet interface profiles exhibit self-similar characteristics. Differences in the physical properties of the two dispersed phases result in asymmetric contraction at the upper and lower interfaces of the Janus droplet neck, but this influence is reduced near the breakup time of the droplet in the way that the neck contraction tends to synchronize. The volume prediction model is proposed based on the local capillary number of the continuous phase, which demonstrates that the droplet volume consistently decreases as the continuous phase flow rate increases.
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Energies
·
2025
·Vol. 18
·期 14
·3767
·
IF 3.2
Wenbo Zhu,Kaulya Pathiraja,Xu Guo,Baojun Hui,Mingli Fu,Linjie Zhao,Yuhuai Wang,Jin Li
A novel interfacial coating agent was developed by modifying silicone oil with polycyclic aromatic hydrocarbons (PAHs) to enhance the insulation performance of HVDC cable accessories. This study investigates the effects of corona and hot–cold cycle aging on the DC breakdown characteristics of the Cross-Linked Poly Ethylene and Ethylene Propylene Diene Monomer (XLPE/EPDM) interface. Interfacial breakdown tests, infrared spectroscopy, and a microstructural analysis were employed to investigate aging mechanisms. The results show that PAH-modified silicone oil significantly increases the breakdown voltage, with 2,4-dihydroxybenzophenone (C13H10O3) identified as the optimal additive via quantum chemical calculations (QCCs). Even after aging, the modified interface maintains its superior performance, confirming the long-term reliability of the coating.
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JOURNAL OF APPLIED POLYMER SCIENCE
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2025
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IF 2.8
Xiaohua Gu,Shangwen Zhu,Chin Hao Chong
Polyisocyanurate (PIR) foam is a modified polyurethane material that cannot be easily degraded using conventional methods. A process route for degrading PIR waste via alcoholysis was investigated in this study. The effects of conditions such as the type of alcoholysis agent, amount of alcoholysis agent used, duration of alcoholysis, ratio of two-component alcoholysis agent compounding, and amount of catalyst were discussed. The optimum alcoholysis process parameters for waste polyisocyanurate and the use of alcoholysis products for preparing recycled PIR were determined. It was found that the alcoholysis material obtained from the alcoholysis of PIR using diethylene glycol or butylene glycol had low viscosity. The compound ratio of butylene glycol: diethylene glycol a = 43:57 was found to be the best two-component alcoholysis type and ratio under the experimental conditions of alcoholysis time = 2 h, alcoholysis temperature = 180°C, and catalyst = 0.3 w% NaOH; the viscosity of the alcoholysis material was 2351 mPa·s. The resulting recycled-PIR foams showed the best thermal stability and compressive strength and demonstrated the best compressive properties. They had a 17.6% lower thermal conductivity and 12.7% higher compressive strength compared with those of commercially available PIR shells.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2025
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IF 5.4
Shixu Li,Hui Cao,Hui Zhao,Peng Wei,Luo Yue,Pengpeng Bai,Yonggang Meng,Yu Tian
Magnetorheological fluids (MRFs) are magnetically responsive smart materials widely employed in damping systems. However, their broader application is hindered by significant sedimentation-related issues. In this study, magnetic particles undergo surface modification using a hyperbranched surfactant, with the modification process guided by finite element simulations. Magnetization characterization demonstrates that, compared to unmodified magnetic particles, the polymer-modified particles exhibit increased oleophilicity while maintaining a minimal 1.1 % reduction in saturation magnetization. Correspondingly, the magneto-induced dynamic yield stress at 400 mT decreases by 5.59 % in MRFs containing modified particles relative to those with unmodified particles. Furthermore, the polymer modification enhances the interfacial bonding between particles and the carrier liquid, leading to an increase in the storage modulus. Notably, the anti-settling improves significantly, with the suspension stability increasing from 45.96 % to 88.68 % after 15 days. Molecular dynamics simulations further confirm that the polymer acts as an obstacle, preventing direct particle contact and thereby mitigating inter-particle interaction. These findings provide valuable insights into enhancing the long-term performance and reliability of MRF applications, thereby contributing to their continued development in engineering applications.
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Science Advances
·
2025
·Vol. 11
·期 37
·
IF 12.5
Fei Jia,Shengjun Fan,Jianglong Guo,Yanju Liu,Jinsong Leng
Mobile robots that simultaneously have fast speeds, sufficient load-carrying capabilities, and multiple locomotive functions have always been challenging to develop. Here, we introduce a liquid-amplified electrostatic rolling (LAER) mechanism, which elegantly integrates actuation and adhesion into a streamline single-degree-of-freedom structure. Based on this, we developed a rigid tethered LAER roller (0.015 grams) that exhibited a rapid moving speed of ~210 body length per second on ceilings and a flexible tethered roller (10.600 grams) that had a load-to-weight ratio of ~121 moving on the ground. Liquid regulating modules were embedded into LAER structures to exhibit controlled moving. We also developed a single-wheeled and two-wheeled untethered LAER robots with onboard power supply. Furthermore, we demonstrate a LAER linear actuator and a camera equipped untethered LAER robot for preliminary environmental monitoring. The lightweight, scalable LAER structure is promising to bring fast electrostatic actuators, motors, and robots with superior load-to-weight ratios and multimodal locomotion capabilities such as turning, circular moving, and plane-to-plane transitioning.
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