JOURNAL OF HAZARDOUS MATERIALS
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2025
·
IF 11.3
Yiyan Gao,Xiaojuan Yan,Ying Chen,Ying Sui,Ning Wang,Tianyu Wang,Guanghui Gao
The development of separation materials with high flux, anti-oil fouling, long-term stability, and the ability to remove various pollutants is an urgent requirement in the field of oil-water separation. Herein, we designed a Janus sponge with multiple separation functions. Specifically, we first prepared the PCA-CS gel coating on the polyurethane (PU) sponge through the co-deposition of protocatechuic acid (PCA) and chitosan (CS), and then Janus sponge was obtained through bottom-up approach of adsorbing stearic acid (SA) and an ethanol suspension of titanium dioxide (TiO 2 ). The prepared Janus sponge exhibits excellent wetting behavior and oil adhesion resistance, and can maintain stable performance in acidic, alkaline, saline solutions and ultrasonic environment. The pore size of the Janus sponge can be adjusted by mechanical compression to efficiently separate various types of emulsions, dyes and mixed wastewater. Among them, the emulsion and dye separation efficiency can both be above 99.6 %, and can maintain the high flux with 15372.7 L m −2 h −1 . More importantly, the prepared Janus sponge can effectively remove the emulsified oil droplets from the wastewater generated by the automotive final assembly shop. Consequently, it can be predicted that Janus sponge exhibits great application potential in emulsion and dye wastewater treatment.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
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2024
·
IF 13.3
Junpeng Zhang,Yingying Li,Bin He,Tao Zhang,Bingqian Yang,Wenzheng Yu,Ligang Hu,Guibin Jiang
The purification of oily wastewater from diverse industries emerges as a critical solution to alleviate the existing freshwater crisis. Advanced oil–water separation techniques, including membrane separation, have garnered significant attention for their high efficiency, low energy consumption, and ease of maintenance. Notably, the integration of superhydrophobic surfaces in membrane fabrication has shown promise in enhancing separation performance. However, conventional methods often fail to ensure long-term wear resistance and scalability, necessitating innovative strategies for membrane preparation. In this context, 3D printing technology, particularly selective laser sintering (SLS), presents a novel approach for the tailored production of hydrophobic membranes. By leveraging the inherent properties of thermoplastic polyurethane (TPU) and thermoplastic elastomers (TPE), untreated polymer powders can be directly sintered into intricate porous structures with micro-nano rough surfaces, exhibiting superior oil–water separation capabilities. The fabricated 3D-printed membranes demonstrate exceptional hydrophobicity and oleophilicity, coupled with robust chemical, environmental, and mechanical properties and high separation efficiency (>99.3 %) at an impressive separation flux of 3.23 × 10 5 L·m −2 ·h −1 under gravity-driven conditions. Furthermore, the eco-friendly nature and scalability of this approach hold promise for large-scale implementation, signaling a significant step towards sustainable environmental development.
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Materials Today Bio
·
2025
·
IF 10.2
Jupei Zhang,Hangbin Xia,Xuerui Zhou,Zhaoxu Meng,Qishu Jin,Dongmin Chen,Xiaojuan Xia,Yiren Jiao,Jiang Chang,Zhihong Dong,Zhen Zeng,Hongshi Ma,Chen Yang
Breast reconstruction after mastectomy aims to restore breast appearance and function. Current scaffolds often fail to meet the complex clinical demands of post-mastectomy breast reconstruction, which include personalized shaping, prevention of tumor recurrence and metastasis, and promotion of adipose tissue regeneration. This study aims to address these challenges by combining a readily processable biopolymer, polycaprolactone (PCL), with a multifunctional bioactive ceramic, cobalt orthosilicate (Co 2 SiO 4 , CoSi) to form a multi-functional CoSi/PCL composite scaffold through 3D printing technology. The scaffold exhibits a controllable shape with designed macroporous architecture. Its photothermal performances are well presented in both near-infrared (NIR) I and NIR-II regions, enabling effective tumor ablation with minimal side effects. Additionally, the release of bioactive silicate and cobalt ions promotes adipogenesis and angiogenesis, thereby enhancing the integration of the scaffold with surrounding tissues. This approach offers a promising strategy for combining tumor therapy with breast reconstruction, providing a clinically relevant solution for post-mastectomy patients.
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Zhecun Wang,Jinghan Zhang,Yubing Shao,Zhanyuan Cui,Yali Zhao,Yan Zhang
The Janus membranes with asymmetric wettability can gate oil or water transport spontaneously and directionally to facilitate the liquids transport for oil/water emulsions separation without extra energy consumption, which have attracted wide attention. However, this single-functioned either oil or water removal Janus membranes can only separate one type of emulsions and cannot meet the requirements in complex environments. Herein, a bi-functional Janus mesh membrane with selective directional oil- and water-transport integration induced by direction-directed dual asymmetric wettability is demonstrated for energetic-efficient on-demand separation of oil-in-water and water-in-oil emulsion. An ingenious double single-side asymmetric modification strategy is proposed to make a homogenous mesh membrane with special Janus interface, where one surface features oleophobicity and hydrophilicity while the other shows superhydrophobicity and oleophilicity. This direction-directed wettability imbalance gives rise to the selective directional both water and oil transport property, namely , one surface directionally transports oil and block water. In contrast, the other surface suspends the oil and directionally transports water across the membrane. According to this property, this multifunctional Janus mesh membrane achieves high-performance on-demand oil-in-water and water-in-oil emulsions separation without extra energy consumption.
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Journal of Water Process Engineering
·
2024
·
IF 6.3
Yalong Liu,Binjie Xin,Md All Amin Newton,Lifeng Li,Dan Huang
Oil pollution poses severe threats to both ecosystems and human health. This study utilized electrospinning and carbonization processes to fabricate a SiO2-TiO2-C nanofiber membrane (STCNFM) exhibiting photocatalytic self-cleaning properties designed explicitly for oil-water separation. These membranes possess nanoscale rough structures, endowing them with superoleophilicity (0°) and hydrophobicity (138°). Addressing the limitations associated with traditional ceramic membranes, particularly in terms of stability and reproducibility, cyclic experiments confirm the significant stability and reproducibility of this composite membrane, ensuring reliable long-term applications for continuous oil-water separation. Leveraging the synergistic effect of TiO2 and the carbon fiber substrate, STCNFMs-5 demonstrate exceptional separation performance and notable self-cleaning capabilities. Following a 2-h exposure to ultraviolet light, the membrane's flux is restored to its original level. STCNFMs offer a promising solution for efficiently separating oil-water mixtures and emulsions, holding potential importance in water treatment and resource recovery endeavors.
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Journal of Environmental Chemical Engineering
·
2024
·
IF 7.4
Qingguo Chen,Jiaxing Liu,Lei Tang,Zhixiang Zeng,Baikang Zhu
The ex-situ method is suitable for the preparation and practical engineering application of large-sized adsorption materials like sponges. pH-responsiveness can solve the post-treatment problem of oil-absorbing sponges. Here, a facile ex-situ method is proposed to construct large-sized multi-functional oil-water separation materials by adsorbing pH-responsive magnetic core-shell structured nanoparticles (MNP) onto different substrates including sponge, metal mesh, and sandpaper. The MNPs are prepared by chemical coating and surface modification. The sponge can achieve in-situ renewable oil-water separation through the "oil absorption - oil desorption" process under different pH values, and the oil droplets exhibit a segmented wiredrawing desorption process. The generated secondary oily wastewater can be further separated through modified metal mesh, which can treat oily wastewater with more complex situations such as oil-water-oil three-phase mixtures. The detached nanoparticles (NP) can be easily recycled and reused through magnets. This method can achieve a large-scale in-situ treatment renewable oil-water separation process that integrates wastewater purification, oil collection, and material regeneration, which is environmentally friendly, energy-saving, and suitable for engineering applications.
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ACS Applied Polymer Materials
·
2024
·
IF 4.4
Yuze Zhou,Qian Feng,Ruipeng Huang,Zhigang Liu,Jiaying Lei,Yumeng Wang,Dongyan Tang
Poly(N-isopropylacrylamide) (PNIPAM) chain with catechol end group was designed and successfully synthesized by a reversible addition–fragmentation chain transfer (RAFT) procedure, and then, even via a simple one-step soaking method, it could be firmly grafted to many different substrates (e.g., a stainless-steel mesh, a nylon microfiltration membrane, an Al plate, and glass). Moreover, after the end anchoring, the formed thin and uniform coating of PNIPAM onto the surfaces of the stainless-steel mesh and the nylon microfiltration membrane would endow the surfaces with a valuable thermo-driven controllable separation ability for oil–water mixtures and emulsions, respectively. And below PNIPAM’s lower critical solution temperature (LCST) (34 °C), the membranes exhibited hydrophilicity and underwater oleophobicity and thus can be used for the separation of a “light oil”/water mixture and an O/W emulsion through a “removing water” process; meanwhile, above its LCST, the membranes show the opposite properties (hydrophobicity and oleophilicity) and thus are used to separate a “heavy oil”/water mixture and a W/O emulsion through a “removing oil” process. In addition, without changing the morphologies and pore sizes of the substrates, the membranes gave many excellent performances such as excellent recyclability, high separation efficiency and a thermo-driven controllable separation ability. So, the facile and effective strategy presented in this work that is suitable for the coupling of PNIPAM with various substrates would also supply an inspiration to the effect conjunction for heterogeneous materials of other functional polymers and substrates.
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Small
·
2025
·
IF 12.1
Xue Yin,Jia Chen,Xin Li,Qifang He,Junping Zhang,Yang Shu,Jianhua Wang,Banglin Chen,Hongdeng Qiu
In this work, a novel 1D metal-mediated hydrogen-bonded framework with rich phenyl groups is first synthesized employing Co 2+ and dibenzoylmethane (DBM) as precursors, which are named HOF-Co-DBM and exhibit exceptional thermal stability, excellent chemical durability, and super hydrophobicity. These distinctive properties can be attributed to the high density, robust Co─O coordination bonds, and the presence of strong hydrogen bonds (O─H─O─C) characterized by short bond distances, which contribute to its close-packed structure. Additionally, the benzene rings flanking the framework further enhance its hydrophobicity. The HOF-Co-DBM is subsequently integrated into a polyurethane (PU) sponge, resulting in exceptional oil removal performance. This study demonstrates the potential for preparing ultra-stable and superhydrophobic hydrogen-bonded organic framework materials with a wide range of applications.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2024
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IF 4.9
Bingfan Li,Xiaowen Qian,Jiang Han,Bo Qi,Chao Yang,Tifeng Jiao
Membrane materials are highly valued in the field of oil-water separation due to the advantages of simplicity, efficiency, economic and environmental protection, and anti-pollution. The polluting nature of fluorinated materials such as PFOA, PVDF, PTFE, and FS-50 has resulted in an urgent need for the development of green and environmentally friendly membrane preparation solutions. In light of the detrimental environmental impact of fluorine-containing materials such as PFOA, PVDF, PTFE, and FS-50, there is a pressing need to develop sustainable and environmentally conscious membrane preparation solutions for oil-water separation. In light of the growing quantity of waste masks, which have resulted in significant environmental concerns, it is pertinent to inquire whether the recycling of these materials could be a viable avenue for the production of membrane materials. This paper proposes a "waste to waste" scheme inspired by mussel bionics. Waste masks were modified by tannic acid (TA) and ε-polylysine (εPL) immersion, and nanoparticles were deposited to prepare membrane material M-TA-4 with superhydrophilic and submerged superoleophobic properties, for the treatment of oily wastewater. The membrane exhibited separation efficiencies exceeding 99.5 %, with an optimal permeate flux of 74,655 L m −2 h −1 . It can be utilized in diverse acidic and alkaline environments (pH = 2, 4, 6, 8, 10, 12, and 14). The remarkable underwater oleophobicity, corrosion resistance, and stability of M-TA-4 present a significant potential and advantage in separation.
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JOURNAL OF MEMBRANE SCIENCE
·
2024
·
IF 8.4
Huan Zeng,Caiqin Wu,Jialing Zhou,Chenling Yao,Guilong Li,Chuanghui Yu,Jian Wang,Hua Dong,Zhe Xu,Lei Jiang
Recently, MOF-based oil/water separation membranes with superwettability have attracted great attention in the treatment of oily wastewater due to their uniform chemical composition and intrinsic porosity. However, the real separation performance is still limited by broking the metal-ligand bonds of conventional MOF materials in extreme chemical and mechanical environments, such as acidic, alkaline, saline, organic, and abrasion. Herein, we provide a metal hydroxide-organic framework (MHOF) composite mesh membrane for high-efficient oil/water separation by simply growing Ni 2 (OH) 2 clusters onto a polydopamine (PDA)-modified stainless-steel mesh (SSM). Compared with conventional MOF materials, our membrane possesses ultra-durable underwater superoleophobicity by taking advantages of its strong chemical bridging, rich hydrophilic groups, and rough surface morphology, which enables a 1 μL water droplet to spread to 0° contact angle within <100 ms and also obtains an ultra-low underwater oil adhesion force ∼1.9 μN. Separation of both oil/water mixtures and oil-in-water emulsions can be achieved by this Ni-based MHOF mesh membrane with high separation efficiency >99.7 % and large permeate flux >57,000 L m −2 h −1 . Furthermore, the Ni 2 (OH) 2 @PDA-SSM mesh membrane exhibits excellent anti-oil-fouling, chemical stability and abrasion resistance, which shows a promising candidate for practical applications. This study provides a rational strategy to construct high-performance MHOF membranes for oil/water separation.
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LWT-FOOD SCIENCE AND TECHNOLOGY
·
2024
·
IF 6
Yingqi Liang,Rongfeng Chen,Guoguang Zhang,Bingqing Huang,Jinmei Zou,Peng Fei
This study investigates the preparation of black radish using a cyclic method involving alternating 75 °C baking and 100 °C steam treatment for 10 cycles. Compared to fresh radish, black radish contains higher concentrations of quinolines and amino acids, giving it a rich taste and caramel aroma. Black radish extract contains quinoline and ornithine levels that are 198.92 times and 94.48 times greater, respectively, than those in fresh radish extract. Black radish extract demonstrates superior performance in reducing fat accumulation and enhancing antioxidant capacity. At a concentration of 10 μg/mL, black radish extract reduces the relative Oil Red O intensity in Caenorhabditis elegans to 13.42%. At a concentration of 1000 μg/mL, black radish extract achieves a 24.93% inhibition rate of reactive oxygen species. Additionally, the black radish extract does not exhibit significant toxic effects on various physiological functions of C. elegans and notably enhances their lifespan.
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Journal of Materials Chemistry A
·
2017
·Vol. 5
·期 24
·12435-12444
·
IF 8.867
Juan Lv,Zhengjun Gong,Zhoukun He,Jian Yang,Yanqiu Chen,Changyu Tang,Yu Liu,Meikun Fan,Woon-Ming Lau
Although superhydrophobic porous membranes are considered to be very promising candidates for oil–water separation, their fabrication methods often involve complicated treatments to build a coating with micro/nano-features on a porous mesh (called “coating on a mesh structure”), which can lead to weak mechanical stability of the superhydrophobic surfaces and the formation of inhomogeneous membrane pores. Herein, we report a facile and environmentally friendly 3D printing approach to fabricate superhydrophobic membranes with an ordered porous structure for oil–water separation using hydrophobic nanosilica-filled polydimethylsiloxane (PDMS) ink. The addition of nanosilica can improve the mechanical strength of the ink and thus ensures the formation of desired topographical structures without the risk of collapsing during 3D printing. Through adjusting the geometrical parameters, a superhydrophobic PDMS membrane was obtained, which mainly depended on the roughness at the sub-millimeter scale. More importantly, the 3D printing approach described herein integrated the superhydrophobic surface into the porous framework and resulted in a mechanically durable superhydrophobic membrane, which successfully avoids the weak interface adhesion issue that arises from the traditional “coating on a mesh structure.” Moreover, the pore size of the printed membrane could be easily adjusted via a computer program to optimize both the liquid flux and separation efficiency of the membranes. The maximum oil–water separation efficiency (∼99.6%) could be achieved for the printed porous membrane with the pore size of 0.37 mm, which also exhibited a high flux of ∼23 700 L m−2 h−1.
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