SEPARATION AND PURIFICATION TECHNOLOGY
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2025
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IF 9
Yunhua Bai,Jiali Ma,Xiong-Fei Zhang,Mengjiao Yu,Xiaoli Gu,Jianfeng Yao
Frequent oil spills have caused severe damage to marine ecosystems, necessitating the development of effective and sustainable methods for oil/water separation. This study utilized green-sourced bacterial cellulose and chitin as raw materials without the need of additional additives. Through freeze-drying and carbonization at 500 °C, a hydrophobic, oleophilic cellulose-based carbon aerogel (CBC) was synthesized. The results indicate that the optimal sample has a high specific surface area (489 m 2 /g), excellent oil absorption capacity (∼138 g/g), and remarkable hydrophobicity (with a water contact angle of 135°). Additionally, the carbon aerogel demonstrates good thermal stability, can be reused multiple times, and can effectively separate immiscible oil/water mixtures and stable water-in-oil emulsions. These findings suggest that CBC, as a scalable and eco-friendly material, holds great potential for marine oil spill remediation, offering new possibilities for advancing sustainable environmental restoration.
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高影响因子
MATERIALS CHEMISTRY AND PHYSICS
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2025
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IF 4.7
Bohan Yin,Fuying Pei,Hongge Jia,Yutong Shan,Mingyu Zhang,Shuangping Xu,Yanqing Qu
Due to the frequent occurrence of marine oil spill accidents, the ecological environment is facing severe threats. However, some traditional oil-water separation methods suffer from issues such as high cost, environmental unfriendliness and low efficiency. Therefore, there is an urgent need to develop a simple and efficient oil-water separation membrane. Leveraging the non-toxicity and abundance of hydrophilic groups (such as -carboxyl and -OH) in tannic acid, this study, for the first time, forms a hydrophilic coating on the surface of polyimide membrane (PI) through the complexation of tannic acid with ferric chloride hexahydrate, thus fabricating a superhydrophilic/superoleophobic membrane for oil-water separation. The water contact angle (WCA) of the modified membrane drops to 0° within 5 s, while the underwater oil contact angle (UOCA) reaches up to 142°. Moreover, under the action of gravity, the membrane not only achieves a high water flux of 2100 L·m -2 ·h -1 but also attains a removal rate of over 90 % for various oil-in-water emulsions. In addition, the modified membrane exhibits excellent resistance to acids, alkalis, and salts, as well as outstanding oil-fouling resistance. This promising material offers a universal modification strategy with broad applications in wastewater treatment.
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ACS Applied Materials & Interfaces
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2025
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IF 8.2
Yao Chen,Qingfa Tang,Qinglan Zhu,Meiting Lu,Errong Chang,Ziting Gao,Zidong Wang,Lu Zhang,Qiang Liu,Junju Zou,Zhong Zuo,Chunyan Shen,Cuiping Jiang
Atherosclerosis (AS) is a chronic cardiovascular disease characterized by the accumulation of excess lipids within arterial walls. Since oxidative stress is one of the key drivers in its pathogenesis, antioxidative therapy serves as a promising strategy for AS treatment. Despite the potent antioxidant properties of polyphenolic salvianic acid A (SAA) and salvianolic acid B (SAB), clinical application is limited by their short half-life, insufficient target selectivity, and poor chemical stability. To overcome these limitations, we developed a biomimetic platelet membrane-coated polyphenol–cerium dioxide nanozyme complex (SS-CeO2@PLTM) as a broad-spectrum antioxidative system for comprehensive AS treatment. The SS-CeO2@PLTM was constructed by conjugating SAA and SAB on the surface of cerium dioxide via a one-pot method, followed by surface coating with a biomimetic platelet membrane. Systematic characterization using UV–vis spectroscopy, Fourier transform infrared (FT-IR), X-ray photoelectron spectroscopy (XPS), transmission electron microscopy-energy dispersive X-ray spectroscopy (TEM-EDS) elemental mapping analysis, Forster resonance energy transfer (FRET), molecular simulations, and pH-responsive release assays validated the successful synthesis and pH-responsive drug release behavior of SS-CeO2@PLTM. It was also found that SS-CeO2@PLTM exhibited broad-spectrum antioxidant activities, effectively scavenging superoxide anions, DPPH, H2O2, and intracellular reactive oxygen species (ROS) while enhancing hepatic SOD and GSH activities. Further cellular uptake and in vivo targeting assays confirmed their specific targeting for atherosclerotic plaques. SS-CeO2@PLTM demonstrated great efficiency in attenuating oxidative stress, inhibiting lipid uptake and lipid accumulation, mediating cholesterol efflux, and inhibiting inflammatory factor (IL-1β, IL-6, and TNF-α) secretion in RAW264.7 cells. We also found that SS-CeO2@PLTM exhibited improved lipid metabolism and diminished plaque area in apoE–/– mice via attenuating oxidative stress and NF-κB-mediated inflammation. Furthermore, biosafety was verified via hemolysis and in vivo safety tests. This study is the first to reveal the superior efficacy of the PLTM-based nanozyme complex in targeted AS therapy, offering a paradigm shift for multifactorial cardiovascular disease management.
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PubMed
高影响因子
ENERGY AND BUILDINGS
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2025
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IF 7.1
Feng Zhang,Junru Guo,Juanjuan Su,Jian Han
Passive daylight radiative cooling (PDRC) is an eco-friendly and advantageous alternative to electric building cooling that can tackle global warming and minimize energy consumption. Hybridized micro-nanorods of TiO 2 (TNr), which possessed simultaneous favorable solar reflectance and UV photocatalysis, were fabricated and modified by utilizing 1H, 1H, 2H, 2H-perfluorodecyltriethoxysilane (PFDTS). It was homogeneously dispersed in a polyvinylidene difluoride (PVDF) precursor solution for spraying processing. A multitude of crosslinked network-like papillae and porous structure was constructed on the PVDF/F-TNr coating. The coated glass fiber textile exhibited a solar reflectance of 94.0 % and an atmospheric window emittance of 92.5 %. The outdoors radiative cooling testing was conducted and a maximum daytime cooling effect of 12.2 °C was realized. The rough porous structure jointly constructed by PVDF and F-TNr endowed the coated textile with favorable superhydrophobicity and photocatalytic properties. The coated glass fiber textile also possessed outstanding self-cleaning and antimicrobial properties, highlighting the potential for building cooling applications.
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COMPOSITES PART B-ENGINEERING
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2025
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IF 14.2
Yuze Zhou,Guang Yang,Yumeng Wang,Jiaying Lei,Tengling Ye,Ruipeng Huang,Shaohao Zhan,Dongyan Tang
To address oily wastewater pollution, a dual-responsive composite membrane with switchable superwettability was fabricated by in situ growth of MnO 2 microflowers on carbon fiber cloth (CFC), followed by coordination-driven self-assembly of catechol-functionalized poly(N-isopropylacrylamide) (PNIPAM). The abundant oxygen vacancies (O v ) on MnO 2 microflowers enhanced photothermal conversion efficiency (24.99% for optimal MC 4 ) and provided active sites for robust PNIPAM anchoring via C-O-Mn coordination bonds. The resulting membrane (PMC) exhibited switchable superwettability: underwater superoleophobicity (150.10°) at 25 o C and underoil superhydrophobicity (150.27°) at 45 o C under heating or NIR irradiation. This enabled efficient separation of diverse oily pollutants, including light/heavy oil-water mixtures and emulsions, with high separation efficiency (> 99.5% for mixtures, > 99.2% for emulsions) and exceptional water flux (25239.89 L m −2 h −1 ). Taking advantages of the in situ grown of MnO 2 on CFC and strong chemical anchoring of PNIPAM on MnO 2 , the photo and thermal dual-responsive PMC membrane maintained excellent stability after mechanical (rubbing, bending, soaking) and chemical (acid/alkaline/saline) challenges, demonstrating superior reusability and durability for practical water purification applications.
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JOURNAL OF HAZARDOUS MATERIALS
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2025
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IF 11.3
Zhong Lv,Yanfeng Yang,Lining Zhang,Pinqi Feng,Xiaolu Zhai,Cun Zhou
Oily wastewater, such as from oil spills, chemical leaks, and organic pollutants, has become a serious environmental pollution problem. Superhydrophobic cotton fabric has attracted extensive research interest as an ideal material for handling oily wastewater, but this solution is difficult to balance efficient oil-water separation and removal of organic pollutants in complex oily wastewater. Therefore, the combination of superwetting and photocatalysis is expected to provide an efficient and simple solution. Firstly, heterojunction g-C 3 N 4 /TiO 2 (CNTi) was synthesized via thermal polymerization; vinyl-terminated dimethylpolysiloxane (V-PDMS) and acrylic acid (AA) were polymerized using free radical polymerization, and then superwetting coating cotton fabric (V-PDMS/AA/CNTi/CF) was co-constructed by a facile dip coating method. The as-prepared superwetting coating strategy was considered suitable for a wide range of substrates, providing new perspectives for the practical application of constructing bifunctional materials with reversible conversion wettability and photocatalytic degradation. Through a pH-responsive reversible conversion wettability mechanism, for different types of oil/water mixtures, the separation efficiency reached more than 99 % for heavy-density oil/water mixtures and more than 96 % for light-density oil/water mixtures, with excellent recoverability and stability. In addition, it demonstrated highly selective degradation of organic pollutants such as Rhodamine B, methylene blue, methyl orange, tetracycline hydrochloride, and levofloxacin hydrochloride. The main active species for photocatalytic degradation were identified as the superoxide radical anion (·O 2 ¯) and the hydroxyl radical (·OH) through quenching experiments. This work combined highly efficient oil-water separation and photocatalytic degradation technologies to provide a new approach and solution for the design of multifunctional water purification materials.
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PubMed
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Surfaces and Interfaces
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2025
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IF 6.3
Shengye Chen,Kunquan Li,Yongxian Zhou,Xinyao Xie,Zeyuan Lu,Xiaojing Su,Xiaojuan Ao,Wenjian Wu
The development of super-wetting membranes has become a promising treatment material for the emulsions separation and heavy metals absorption. However, it is often limited by the slow separation flux and the non-degradable material in practical applications. Based on this, this paper proposed a superhydrophobic biodegradable zein/chitosan/polyvinyl alcohol @ carnauba wax modified titanium dioxide (ZCP@CW/TiO 2 -s) composite membrane for emulsion separation and heavy metal adsorption. The prepared ZCP@CW/TiO 2 -s membrane demonstrated outstanding superhydrophobicity, featuring a WCA of 154 o and a rolling angle as low as 3 o . Surprisingly, the composite membrane exhibited rapid emulsion separation performance under the low pressure (0.1 bar), with a flux of 23524 L·m -2 ·h -1 ·bar -1 and separation efficiency exceeding 98.2 %. The ZCP@CW/TiO 2 -s membrane achieved a high heavy metal adsorption capacity, particularly for Cu 2+ ions, with an adsorption capacity of 149.93 mg/g. The composite membrane also maintained a stable separation performance under 25 times of wear resistance test. In addition, the ZCP@CW/TiO 2 -s membrane had a great photodegradation ability, which could remove organic pollutants adsorbed on the composite membrane. Meanwhile, the composite membrane could be buried in soil after disposal, enabling rapid degradation and preventing secondary pollution. Moreover, the composite membrane is capable of effectively separating emulsions and removing heavy metal ions, thereby tackling the problem of complex oily wastewater pollution. Therefore, the biodegradable composite membrane can be used as candidate materials for future sustainable development.
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SEPARATION AND PURIFICATION TECHNOLOGY
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2025
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IF 9
Jinwei Xue,Zhongning Cao,Yaohua Huang,Yu Li,Yiqian Liu,Qiang Yang
The development of efficient oil-water separation technology has gained significant importance in environmental pollution control and resource recovery. Inspired by the hydrophilic/superhydrophobic patterned surface of Namib Desert Beetles, this study designs a grid-like heterogeneous wettable microchannel device (HWMD) by fabricating heterogeneous wettable plates with tunable wettable patterns. The HWMD combines wettability gradient regulation, spatial confinement, and flow field control to enhance the coalescence-collection of oil droplets, enabling demulsification and separation of oil-in-water (O/W) emulsions. The experimental results revealed that under a flow rate of 3 mL/min and a channel height of 500 μm, the HWMD successfully separated various surfactant-stabilized O/W emulsions, reducing the oil content in the filtrate to a range of 32‐80 mg/L after recycling, though its capture efficiency was reduced for droplets smaller than 15 μm. The simple preparation process and independent operation capability of HWMD provide a practical and efficient strategy for the optimization of separators, demonstrating considerable potential for industrial applications.
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CERAMICS INTERNATIONAL
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2025
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IF 5.6
Changjian Feng,Xin Ning,Fang Liu,Lilan Huang,Hongqiang Wang,Lin Lv,Jiao Li
Flexible hydrophobic Al 2 O 3 fiber membranes doped with rare earth elements (La, Sm, Ho) were successfully fabricated via electrospinning, and the impact of rare earth doping on their mechanical and surface properties was systematically investigated. The incorporation of rare earth elements effectively suppresses Al 2 O 3 grain growth, relieves grain boundary stress, and consequently enhances the flexibility and tensile strength of the membranes. Notably, the Ho-Al 2 O 3 membrane exhibits the best flexibility and tensile strength (1.08 MPa). Furthermore, rare earth doping induces a transformation to hydrophobic surfaces for the La-Al 2 O 3 , Sm-Al 2 O 3 , and Ho-Al 2 O 3 fiber membranes, as evidenced by water contact angles of 149°, 137°, and 142°, respectively. This hydrophobicity is attributed to the formation of rare earth oxides on the fiber surface, which increases hydrocarbon affinity and lowers surface energy. The resulting doped membranes demonstrate excellent antifouling performance, achieving high permeation flux and separation efficiency in oil-water separation. The La-Al 2 O 3 membrane exhibits the highest flux (2921 L/(m 2 ·h)) and efficiency (98.4 %), owing to its superior surface hydrophobicity. These findings provide a mechanistic foundation for tailoring the microstructure and wettability of ceramic fiber membranes through rare earth doping, offering a promising strategy for advanced oil-water separation.
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JOURNAL OF CONTAMINANT HYDROLOGY
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2025
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IF 4.4
Junjie Fu,Jiaoxia Sun,Jiang Fu,Yinghao Xie,Quancai Liang,Jianxin Fan
Oily wastewater poses a severe threat to aquatic ecosystems and public health, while the massive accumulation of waste polyester (PET) textiles exacerbates environmental pollution. To address these challenges, we developed a sustainable approach for transforming discarded PET fabrics into functional materials for efficient oil-water separation. A superhydrophilic modification layer was constructed on PET surfaces via co -deposition of polydopamine (PDA) and polyethyleneimine (PEI). Under optimized conditions (PDA/PEI mass ratio = 1:1, deposition time = 24 h), the modified PET fabric exhibited exceptional superhydrophilicity (water contact angle = 0°) and underwater superoleophobicity (oil contact angle = 161.9°). The material demonstrated robust chemical stability, maintaining >97 % separation efficiency and a stable flux of (20,570.89 ± 1213.74) L·m −2 ·h −1 across a wide pH range (2−12). It achieved high separation efficiencies (>98.3 %) for various oils (n-hexane, dichloromethane, and isooctane) and retained >98 % efficiency after 10 reuse cycles in neutral medium. This work presents a simple yet effective strategy for upcycling waste PET into high-performance oil-water separation materials, offering a sustainable solution for environmental remediation and resource recovery.
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PubMed
高影响因子
Materials Today Chemistry
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2025
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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
CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Yunhao Pan,Tiancheng Zha,Yanan Zhu,Yibo Zhang,Xunming Tian,Aiwen Wang,Rui Wang,Dongmei Liu,Wei Wang,Shouzhu Li
Wastewater treatment for oil–water emulsions is a critical challenge in the environmental and energy sectors. The oil–water separation based on super-wettability membrane has received widespread attention. However, traditional membranes struggle with severe irreversible fouling due to interactions between emulsified oil and hydrophilic organic compounds in practical wastewater, problematizing continuous separation. Here, a non-synthetic polymer membrane with easy-washability after fouling is reported, which shows full recovery of original separation efficiency. The membrane is composed of cellulose blended with sepiolite, which encapsulates and infiltrates the silica nanofiber membrane through silanol condensation and capillary action, then forms a “tight top, bottom, and inside” flexible fusion structure in one step. The dynamic water absorption capability of sepiolite and cellulose can create an enhanced hydration layer on the dense membrane surface, this allows the membrane to maintain structural integrity and stable separation efficiency even in oil emulsion wastewater containing hydrophilic organic compounds. Also, the membrane may undergo assimilative healing by interacting with pollutants to form part of the membrane structure. So, it shows great performances for extended separation, withstanding oil intrusion pressures over 600 kPa, and nearly 100 % removal for oil emulsions. This promising material offers a universal modification strategy with broad wastewater treatment applications.
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