Journal of Water Process Engineering
·
2024
·
IF 6.3
Tonghui Zhang,Yumeng Wang,Bo Ge,Shuangshuang Wang,Yanhu Zhan,Xuefen Wang
To achieve a promising application prospect in nanofiltration (NF) membrane separation , a strategic design tailored to particular functions is crucial. Here, tailor-made thin film nanofibrous composite (TFNC) NF membranes for specific applications were fabricated via interfacial polymerization (IP) between maltitol and trimesoyl chloride (TMC) on PAN nanofibrous substrates. Owing to the moderate reactivity of maltitol, a range of sugar alcohol based polyester membranes with different morphologies and cross-linking degrees were obtained by varying the monomer concentration as well as the reaction time. In this case, the finely tuned loose Mal1-TMC0.2-2 membrane exhibited a prominent permeability (110.34 L m −2 h −1 bar −1 ) and an extraordinary selectivity for dye/salt mixed solution, with the rejection of Congo Red up to 99.11 % and NaCl retention of only 7.41 %, indicating its suitability for textile wastewater treatment . Further, the dense Mal2-TMC0.4-10 membrane showed an excellent Na 2 SO 4 rejection of 97.40 % with a good permeability of 18.65 L m −2 h −1 bar −1 , making it a candidate for seawater and brackish water desalination . In addition, both membranes demonstrated reliable chlorine and pressure resistance along with long-term stability. This study provided new insights and inspiration to the design and preparation of NF membranes for specialized applications.
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
SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Juan Zhai,Zihan Li,Hengyang Mao,Xiuyang Zou,Shouyong Zhou,Meisheng Li,Minghui Qiu,Yan Zhang,Shanshan Xia,Yijiang Zhao
The surge in oil-in-water (O/W) emulsions poses a threat to the ecological environment. Membrane separation technology can achieve complete O/W emulsion separation through size sieving; however, its efficiency is limited by membrane fouling. In this study, an efficient O/W separation membrane with passive and positive anti-fouling properties was fabricated using Fe 3 O 4 functionalized attapulgite (ATP) nanofibers. The anti-fouling mechanism of the multifunctional membranes for the separation of various O/W emulsions was studied. During separation process, a hydration layer, which mitigates oil adhesion with binding energy as low as −169 kcal·mol −1 , forms on the interface of Fe 3 O 4 -ATP. When a cationic surfactant is present, positively charged oil droplets are attracted to the membrane surface, where they compress against each other, leading to demulsification and escape. Synergistic effects including electrostatic shielding, interaction energy, and steric hindrance were demonstrated through characterization and simulation. Our findings showed that the membrane exhibited a high filtration efficiency with an oil rejection of over 99 % and a steady flux of over 73 % of its initial value. After filtration, oil fouling degraded into smaller sizes and escaped from the membrane structure through the Fenton-like catalytic function of Fe 3 O 4 , resulting in a flux recovery ratio of up to 90 %. This study provides a reference for the construction of multifunctional membranes for efficient separation processes and advancing anti-fouling research on membrane interfaces.
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 HAZARDOUS MATERIALS
·
2019
·
IF 7.65
Yanhong Zhang,Yuefeng Feng,Qi Xiang,Fuqiang Liu,Chen Ling,Fenghe Wang,Yan Li,Aimin Li
The development of high efficiency filter membranes, particularly those capable of removing trace heavy metals from drinking water sources, is a global challenge. In this study, a dual-functional membrane (P m G n @PVDF) was successfully developed by doping graphene oxide (GO) and then depositing polydopamine (PDA). The pure water flux (Jw) was 188 LMH/bar and Pb(II) could be effectively removed in the water volume of 2106.36 L m −2 . Both PDA and GO performed positive functions. PDA layer exhibited a high affinity toward Pb(II) by chelating with amino groups. And doping GO maintained a high pure water flux, which had been decreased by the extra PDA layer. In addition, the effective treatment volume of Pb(II) was elevated to 5029.06 L/m 2 by the co-existence of citric acid, since neutral PbHL coordinated with neutral NH 2 and cationic PbL- interacted with NH 3 + through electrostatic attraction. Furthermore, P m G n @PVDF showed the excellent anti-interference performance in high salt and nature organic matters solutions. Thus, this novel dual-functional membrane could be considered as a competitive alternative of NF/RO for the efficient and advanced removal towards heavy metals from natural water.
研究领域:
环境科学
·
材料科学
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2021
·
IF 9.229
Jianxiu Wang,Ming Qiu,Ziyuan Liu,Chunju He
The development of microorganisms and formation of thrombus on a biomaterial surface can seriously lead to device failure and threaten human health. Nonetheless, a surface that has both antibacterial and anticoagulant properties has scarcely been developed. Herein, a novel dual-action membrane composed of polyethersulfone (PES) bulk material and a hydrophilic anionic poly-2-acrylamido-2-methylpropanesulfonic acid (PAMPS) polymer has been prepared via the cationic antibacterial agent poly(hexamethylene biguanide) (PHMB)-induced phase separation technique. Interestingly, the resultant membrane can offer tunable antibacterial and anticoagulant properties, while maintaining satisfactory permeability and greatly increasing selectivity. The membrane also shows excellent hydrophilicity, a well-defined porous surface, and cross section with a sponge gradient structure. Furthermore, the PHMB–PAMPS complex formed on the membrane surface displays outstanding long-term stability, which is crucial for further practical applications. More importantly, the hollow fiber membrane fabricated by the cationic polyelectrolyte-induced phase separation technique confirms its capability to control the membrane permeability (257.4 L·m–2·h–1·bar–1) and selectivity (95.9%) without destroying the membrane structure. The present work opens a straightforward and efficient avenue for the rational design of a functional surface to fight biomedical material-associated infections.
研究领域:
生物材料学
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医学工程
·
高分子科学
✓ 已验证
DOI
PubMed
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2024
·
IF 8
Ying Hu,Lingmin Lu,Yuxiao Wu,Yajing Li,Fang Wang,Xiaoqiang Chen,Haiyan Fu,Yuanbin She
A bifunctional fluorescent pyrene-based probe, PYR , was designed by incorporating pyridine and phenolic hydroxyl moieties into pyrene fluorophore, which exhibited ratiometric fluorescent response toward Al 3+ . PYR underwent unique monomer-excimer conversion in ratiometric manner through the formation of a 2:1 coordination complex and accomplished with fluorescent color variation from green to blue. PYR displayed excellent selectivity , high sensitivity (LOD = 0.33 μM), rapid response (<45 s), and good cytocompatibility to Al 3+ . Notably, a fluorescent cellulose membrane decorated with PYR was successfully developed and applied for accurately quantify of Al 3+ in diverse actual samples, and high-efficiency removal (∼96%) of Al 3+ from water systems, with sustainable recycling performance up to 10 times. Bifunctional membranes also played an important role in reducing the LOD of Al 3+ to 16 nM through the preconcentration process. Therefore, this study is crucial to the development of environmentally sustainable strategy for monitoring and removing pollution.
研究领域:
环境科学
·
材料科学
·
分析化学
✓ 已验证
DOI
高影响因子
Nanoscale
·
2021
·Vol. 13
·期 27
·12017-12027
·
IF 7.79
Xin Song,Xuewu Huang,Junchen Luo,Biao Long,Weimiao Zhang,Ling Wang,Jiefeng Gao,Huaiguo Xue
Recently, a series of super-hydrophobic materials have been prepared and efforts have been made to further expand their applications, especially in electronics and smart actuators. However, it remains challenging to develop light weight, flexible and super-hydrophobic materials integrating multifunctionalities such as superior photothermal conversion, corrosion resistance, and controllable actuation. Herein, a superhydrophobic and multi-responsive carbon nanofiber (CNF) hybrid membrane with an outstanding photo-thermal effect is fabricated by electrospinning the mixture of polyacrylonitrile and nickel acetylacetonate, followed by two step heat treatment and subsequent fluorination. The superhydrophobic CNF hybrid membrane with outstanding anti-corrosion and self-cleaning performance can float on the water surface spontaneously, thus effectively reducing the motion resistance. The light driven actuation with controllable movement can be achieved by adjusting the laser irradiated location, in which the localized absorption of light is transformed into thermal energy, and hence an imbalanced surface tension is created. The multifunctional hybrid membrane also opens up an arena of applications such as freestanding flexible electronics, drug delivery, and environmental protection.
研究领域:
材料科学
·
智能材料
·
纳米技术
✓ 已验证
DOI
PubMed
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2020
·
IF 3.573
Linghui Yin,Min Hu,Dongyan Li,Jiahao Chen,Kai Yuan,Yishui Liu,Zhaoxiang Zhong,Weihong Xing
A multifunctional air filtration membrane is urgently required for high efficiency removal of particulate matter (PM) and capture of airborne toxic gases (SO2, NOx, VOCs, etc.). Zeolite imidazole frameworks (ZIFs), as a subclass of metal–organic frameworks (MOFs), hold promise for poisonous pollutant capture due to their excellent adsorption performance and high thermal and chemical stability. Here, a facile strategy is demonstrated to synthesize a multifunctional air filtration membrane through in situ growth of ZIF-67 nanoparticles on a flexible silica nanofiber membrane (ZIF-67@SiO2 NFM), which significantly improved the contact area of the membrane with SO2 and PM. When it underwent a standard PM removal test, the prepared ZIF-67@SiO2 NFM showed the highest PM2.5 removal efficiency of 100% at a relatively low pressure drop of 335 Pa with the impregnation time being 24 h. At the same time, due to the load of ZIF-67, the SO2 adsorption capacity up to 1013 mg/g could be realized in the obtained membrane when exposed to a SO2/N2 mixed flow with a humidity of 55%. Furthermore, during the incense smoke experiment, the PM2.5 filtering efficiency of the prepared ZIF-67@SiO2 membrane could reach 98.9% under an initial concentration of 1000 μg·m–3. This work proposes a simple and practical strategy to not only prepare a high-performance multifunctional nanofiber membrane but also achieve the capture of SO2 and PM with high efficiency.
研究领域:
材料科学
·
环境科学
·
化学工程
✓ 已验证
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2025
·
IF 5.4
Chengzhen Wen,Keyu Lan,Mingqi Ding,Shibing Bai,Jingjing Jing,Dawei Xu
Traditional materials with single electromagnetic interference (EMI) shielding performance have not satisfied the demand of rapidly developed information and communication technology, which spawns the development of novel materials with higher efficiency and more functionality. However, it is quite difficult to strike a good balance between EMI shielding performance and other functions, such as infrared stealth, which extremely limits the further application, especially in the special or extreme condition. Herein, a novel functional membrane with bifacial architecture was fabricated via the facile solution strategy, which was constructed by the in-situ generation and unidirectional growth Ag nanoparticles and selectively enrichment of Ti 3 C 2 T x sheets on upside and backside of the membrane, respectively. The composite membrane possessed the excellent antibacterial and EMI shielding performance, with the distinctive bifacial wettability and conductivity. Furthermore, the incorporation of Ti 3 C 2 T x effectively reduced the infrared emissivity and endowed the membrane with the infrared stealth performance, providing the novel strategy for constructing multi-functional materials with required structure, showing broad application prospects in the military field.
研究领域:
材料科学
·
电子工程
·
军事应用
✓ 已验证
产品关联
DOI
高影响因子
Polymer Chemistry
·
2016
·Vol. 7
·期 6
·1330-1336
·
IF 5.687
Fei Chen,Jiangna Guo,Dan Xu,Feng Yan
Thermo- and pH-responsive poly(ionic liquid) (PIL) membranes were synthesized via photo-crosslinking of imidazolium type IL monomers with acrylic acid (AA), N-isopropylacrylamide (NIPAM), and acrylonitrile (AN). The transmittance of the prepared PIL membranes was determined by the concentration of AA units and the hydrophobicity of PIL counter anions, and could be altered in response to temperature and (or) pH. The shape deformation of the PIL membranes can be reversibly tuned by changing the pH value of aqueous solutions or gas atmospheres (NH3/HCl). The dual-responsive PIL membranes prepared in this work can act as a soft actuator, and would have potential applications in advanced sensors and functional materials for inscription of information.
研究领域:
高分子化学
·
智能材料
·
响应性聚合物
·
生物医用材料
·
功能材料
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2019
·
IF 8.456
Zhongyuan Ren,Jianquan Luo,Yinhua Wan
Biodegradation is a mild and efficient way to protect humans and animals from mycotoxins. However, microbes and enzymes are susceptible to environmental change, lack of stability, and reusability. In this work, three peroxidase-like metal–organic frameworks (MOFs), as artificial substitutes of natural peroxidase, are used for aflatoxin B1 (AFB1) removal, demonstrating the strong removal ability for AFB1 and anti-interference ability toward other substances. There are distinct adsorption and catalytic properties among these MOFs that are mainly because of the differences in structure and Fe ion active sites. Then, we immobilized these MOFs into ultrafiltration membranes to form a multifunctional membrane (i.e., filtration, adsorption, and catalysis) for AFB1 removal with good reusability that can be operated in simultaneous adsorption/catalysis or adsorption followed by catalysis/regeneration modes. Physicochemical analysis and animal experiments showed that the degradation products are probably several low-carbon substances whose toxic groups are cleaved.
研究领域:
环境科学
·
食品科学
·
生物化学
✓ 已验证
DOI
PubMed
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2022
·
IF 10.53
Ying Song,Jinkang Pan,Meifeng Chen,Yipin Wang,Zhili Li,Yuanyuan Ge
Nanoparticle-reinforced membranes have received widespread interest in water purification ; however, their application is limited due to high cost, harsh conditions, and strong tendency of nanoparticles agglomeration and leaching. Herein, a multifunctional membrane was newly created by filling the pores of a glass fiber microfiltration membrane (GF) with chitosan-modified geopolymer sub-microparticles (CS-GMs) and crosslinking with polydopamine. Characterizations revealed that the introduction of CS-GMs was successful in regulating the porous structure of the membrane and suppressing membrane thickness growth and particle agglomeration . With an optimal dose of CS-GMs (0.45 g), the screening pore size of the membrane was regulated to 58 nm, thus showing a high rejection rate for microplastics (89.37%). In addition, the membrane was super-hydrophilic/underwater super-oleophobic and superior to the documented nanoparticle-reinforced membranes in decontaminating different oil-in-water emulsions (>99.5%) and co-existing pollutants ( n -hexadecane: 99.62%, crystal violet: 94.51%, and lead ions: 99.62%) due to the effects of sieving and adsorption. Moreover, it possessed good reusability, rational environmental tolerance, long-term operational stability and point-of-use functions. Overall, this study paves the way for the feasible creation of low-cost, eco-friendly, and multifunctional sub-microparticle-reinforced membranes for the effective elimination of multiple contaminants in wastewater.
研究领域:
环境科学
·
材料科学
✓ 已验证
DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2025
·
IF 9
Xing'er Jijue,Shiyu Wang,Fazli Wahid,Xuezhi Dai,Qiang Tian
The discharge of oily contaminated water is causing severe environmental harm, highlighting the urgent need to develop cost-effective materials for the extensive treatment of marine oil spills and industrial wastewater. Superhydrophilic/underwater superoleophobic membranes have emerged as a promising technology owing to their potential in treating oily wastewater. However, these membranes still face challenges in the efficient removal of organic pollutants from oily wastewater. To address this, a one-step modification method was employed to functionalize cotton fabrics (CF) using iron oxide nanoparticles (Fe 2 O 3 -NPs). The process involved treating CF with an iron precursor solution at 120 °C for 4 h, resulting in a multifunctional membrane with superhydrophilic and underwater superoleophobic properties. The as-prepared composite membrane demonstrated highly efficient degradation of organic dyes (99.5 %) within 8 min by a heterogeneous photo-Fenton catalytic reaction. It also achieved effective oil/water separation, exhibiting a high flux of 28,680 Lm −2 h −1 , and a separation efficiency of 99.7 %. Furthermore, the membrane showed excellent reusability, stability under harsh environments, and notable antifouling properties. By integrating rapid photocatalytic degradation with efficient oil/water separation, this study represents a significant step toward the development of multifunctional membranes for complex wastewater remediation.
研究领域:
环境科学
·
材料科学
·
化学工程
·
纳米技术
·
污染控制
·
功能材料
·
催化化学
✓ 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）