JOURNAL OF MEMBRANE SCIENCE
·
2017
·
IF 6.035
Huiqing Wu,Yuejun Liu,Long Mao,Chunhai Jiang,Jiaming Ang,Xuehong Lu
To prepare an ultrafiltration membrane with simultaneous self-cleaning and self-protection abilities, TiO 2 -polydopamine (PDA) nanohybrid are facilely prepared and used to functionalize polysulfone (PSf) membrane matrix. In the TiO 2 -PDA nanohybrid , PDA spheres acts as an adhesive substrate to hold densely covered photocatalytic TiO 2 nanoparticles , and also serves as a free-radical scavenger to protect PSf membrane against the damage by free radicals produced by TiO 2 during UV exposure treatment. The spherical-shaped TiO 2 -PDA can be easily doped into PSf membrane via phase inversion method, which allows the hydrophilic TiO 2 -PDA spheres migrating to the hydrophobic PSf surface and benefiting the antifouling ability. As a result, the TiO 2 -PDA/PSf hybrid membrane exhibits excellent overall performances in separation efficiency, remarkable self-cleaning property and performance stability under UV irradiation, in comparison with PSf and TiO 2 /PSf membrane. The influence of TiO 2 -PDA content on the membrane properties is also investigated, and it is found the hybrid membrane with 0.8 wt% TiO 2 -PDA possesses the optimal performance.
研究领域:
材料科学
·
环境工程
·
膜技术
✓ 已验证
DOI
高影响因子
Desalination and Water Treatment
·
2024
·
IF 1
Yong Chen,Tao Wan,Yanjun Huang,Yi Wang,Guozhi Fan,Lei Zhang,Shengxuan Fan,Xueling Liu
The amount of substation accident oil pool wastewater (SAOPW) generated has been increasing due to the successive addition and renovation of substations, and the discharge of untreated or incomplete treatment outside the station will cause serious environmental pollution problems. In this study, a polyethersulfone (PES) composite ultrafiltration membranes were fabricated using phase inversion method and evaluated them for oil removal from SAOPW. The morphology and functional groups of PES composite membranes before and after filtration were characterized and compared through scanning electron microscopy and Fourier-transform infrared spectroscopy. The effects of operating pressure, feed temperature, initial oil concentration and operating time were systematically investigated using flux recovery and oil removal rate as the indexes of investigation, and the process economy was studied and evaluated. The results showed that the PES composite membrane had a relatively high-water flux of 260.2 (L·m –2 ·h –1 ) and a high oil removal rate (≥90%), which could effectively remove oil from water. Besides, its high flux recovery ratio (≥90%) after four filtration and cleaning cycles indicated the excellent performance of this PES composite membrane in the separation of oil–water emulsions. This study confirms the applicability of PES composite membrane for oil removal from SAOPW, providing a promising treatment method for the SAOPW treatment.
研究领域:
环境工程
·
膜技术
·
水处理
·
化学工程
✓ 已验证
DOI
高影响因子
Small
·
2024
·
IF 13
Renbo Wei,Kexin Liu,Yongxian Liu,Zaixing Wang,Yayao Jiao,Qi Huo,Xiufu Hua,Lingling Wang,Xun Wang
With the increasing application of electronic devices, absorption-dominated electromagnetic interference shielding materials (EMISM) have garnered significant attention for preventing secondary electromagnetic pollution. In this study, polyethyleneimine (PEI)-modified MXene (PEI@MXene) is fabricated and achieved its controlled distribution on the pore walls of polyarylene ether nitrile (PEN) porous films via the phase inversion method (PIM) to obtain a closed porous skeleton of MXene on the pore walls (CPS–MPW). The resulting PEI@MXene/PEN composite film (CFx) exhibited absorption-dominated EMIS efficiency (EMISE). Attributing to the strong interaction between PEI and the hydrophilic segment of amphiphilic Pluronic F127, with its hydrophobic segment anchored by the PEN matrix, PEI@MXene is directionally distributed on the pore walls of CFx. In addition, resulting from the cladding of MXene with PEI and isolating it with closed honeycomb pores, the obtained CFx are insulators without forming a conductive network. As a result, these CFx demonstrate absorption-dominated EMISE with the highest SE T of 41.2 dB and coefficient A higher than 0.51. Further continuous hot pressing of CFx results in thinner and denser films with an impressive specific EMISE up to 750 dB cm −1 . The successful fabrication of these CPS–MPW-type CFx with absorption-dominated EMISE provides a reference for developing and preparing novel EMISM.
研究领域:
材料科学
·
电磁工程
·
纳米技术
✓ 已验证
DOI
PubMed
高影响因子
Journal of Environmental Chemical Engineering
·
2025
·
IF 7.2
Mingyan Chen,Chunzhan Song,Yucheng Liu,Ni Zhao,Heping Jiang,Qingxin Luo,Xiaoping Jiang
The pore structure and surface properties of ceramic membranes lead to a low separation flux, which limits their further application. Changing the microstructure of membranes by introducing new technologies is a very effective method. In this study, high flux ceramic substrate membranes were prepared by metal mesh-assisted phase inversion method, and then new PDA@SiO 2 ceramic membranes were prepared by introducing PDA@SiO 2 core-shell structure. During the phase inversion, the metal mesh pores restrict the path of the water nuclei to extract the polymer, and the microchannels grow along the extraction path, creating a uniform pore size above the metal mesh and removing the dense layer below, allowing the ceramic substrate membranes to exhibit high fluxes. PDA@SiO 2 core-shell structures were stably grown on the surface of ceramic membranes by vacuum self-assembly. Due to the introduction of hydrophilic groups and micro-nano scale roughness, the PDA@SiO 2 ceramic membranes exhibit super-hydrophilic/underwater super-oleophobic performance, stabilizing the separation of oil-in-water emulsions with excellent permeation fluxes (1058 L·m⁻²·h⁻¹·0.2 bar⁻¹) and oil removal rate (99 %). PDA@SiO 2 ceramic membranes exhibit excellent stability, fouling resistance, and durability in harsh environments, contamination tests, and cycling tests. Excellent oil-water separation, stability, and durability make PDA@SiO 2 ceramic membranes a promising solution for the treatment of oil-in-water emulsions.
研究领域:
膜技术
·
材料科学
·
环境工程
·
化学分离
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2018
·
IF 6.578
Dan Li,Huamin Zhang,Xianfeng Li
Polyetherimide (PEI) porous membranes with tunable morphology are constructed via a typical phase inversion method and applied in lithium-ion batteries (LIBs). The morphology of PEI membranes is adjusted by introducing hydrophilic additives, polyvinyl pyrrolidone (PVP), in the cast solution. The obtained PEI porous membranes show typical sponge-like microstructure and more connected and bigger pores are formed in the membranes with the increase amount of PVP. Under LIBs test condition, batteries with PEI membranes show superior thermal stability, good electrolyte wettability , and tunable ion conductivity and rate performance. As a result, a battery with a PEI-2 membrane exhibited comparable electrochemical performance to that of commercial separators. A 96.4% capacity retention rate was obtained after cycling for 100 cycles for a battery with a PEI-2 membrane. Thus, the membranes with controlled performance in LIBs can be realized via adjusting their morphologies. This paper provides an effective way to optimize fabrication parameters of porous membranes for LIBs application.
研究领域:
材料科学
·
电化学
·
能源存储
·
高分子科学
·
膜技术
·
电池技术
✓ 已验证
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2018
·Vol. 135
·期 27
·46430
·
IF 1.901
Huiqing Wu,Yuejun Liu,Jing Huang,Long Mao,Jianhong Chen,Meng Li
A silver–polydopamine (Ag–PDA) nanohybird was used to produce polysulfone (PSf) ultrafiltration membranes with excellent antifouling and antibacterial properties. First, the catechol functional groups of polydopamine (PDA) helped with the in situ immobilization of silver (Ag) nanoparticles (<10 nm) on the PDA sphere surface; this led to the formation of the Ag–PDA nanohybrid. Then, Ag–PDA/PSf hybrid membranes were prepared via the phase-inversion method, and the influence of Ag–PDA loading on the hybrid membrane properties was systematically investigated. When the content of Ag–PDA was 0.5 wt %, the hybrid membrane achieved optimal separation performance, including a dramatically increased pure water flux and a well-maintained bovine serum albumin rejection. Furthermore, the Ag–PDA/PSf hybrid membranes presented a significantly enhanced protein-fouling resistance and a good antibacterial activity. These improvements were attributed to the unique structure and properties of the Ag–PDA nanohybrid because of the synergistic effect of the hydrophilic PDA substrate and well-distributed Ag nanoparticles. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018 , 135 , 46430.
研究领域:
材料科学
·
膜技术
·
纳米技术
·
环境工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2025
·
IF 2.8
Zhijiang Sun,Yumeng Wang,MeiMei Yu,Yuan Li,Dahui Wang,Zehua Yin,Fen Ran
Wastewater contaminants can be effectively removed using membrane separation technology, and polyacrylonitrile, a polymer with strong thermal and chemical durability, has been employed extensively in developing water treatment membranes. Typically, bare polymer membranes face numerous challenges, including low permeate flux and poor separation capacity, so researchers have used modification maneuvers such as adding polymers and inorganic and other modified materials as additives to overcome these challenges. However, the cost issues of membrane development, reproducibility, and whether they have the potential for large-scale industrial production are often overlooked. This study uses polyacrylonitrile as the polymer matrix, polyvinylpyrrolidone as the modifier, and 1-methyl-2-pyrrolidone as the solvent to prepare hybrid ultrafiltration membranes utilizing the impregnation-submerged phase transition method. A polymeric membrane with high permeate flux (pure water permeate flux up to 693.7 L m −2 h −1 ) and good separation ability (BSA retention up to 89.6%) can be made by altering the casting solution's polymer matrix and modifier ratio. The membrane made by scraping and coating it with this cast membrane solution using an automatic coating machine also maintains good reproducibility (pure water permeate flux up to 683.5 L m −2 h −1 and BSA retention up to 86.6%). These results suggest that changing the blending ratio of the cast membrane solution provides a relevant idea for developing polyacrylonitrile ultrafiltration membranes with industrialization prospects.
研究领域:
膜科学
·
高分子科学
·
水处理技术
·
化学工程
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
Environmental Science-Water Research & Technology
·
2017
·Vol. 3
·期 4
·710-719
·
IF 2.817
Song Zhao,Lichuan Huang,Tiezheng Tong,Wen Zhang,Zhi Wang,Jixiao Wang,Shichang Wang
Nanocomposites with antibacterial properties were synthesized through in situ reduction of silver ammonia aqueous solution (Ag(NH3)2OH) on polydopamine coated polyaniline (PANI) nanofibers. The obtained PANI@Ag nanocomposites were incorporated into polyethersulfone (PES) to fabricate composite ultrafiltration (UF) membranes by a phase inversion process. As characterized by FTIR, XRD and TEM analysis, Ag nanoparticles were uniformly assembled onto PANI nanofibers, which favored silver immobilization in the membrane matrix. The stability of silver in the composite membrane was further determined, with a slow silver release observed during static immersion and dynamic filtration tests. Compared with the pristine PES membrane, the PES/PANI@Ag membrane showed improved hydrophilicity, water flux and antifouling properties. Moreover, the PES/PANI@Ag membrane exhibited excellent anti-bacterial properties and anti-biofouling performance against Escherichia coli and Bacillus subtilis bacteria.
研究领域:
材料科学
·
环境工程
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2023
·
IF 5.7
Mingyang Hou,Feng Zhu,Ying Liu,Yu Chen
Protonic ceramic electrochemical cells (PCECs) have received extensive attention for encouraging energy conversion and storage efficiencies. One of the key obstacles hindering the development of PCECs is the time-consuming and costly fabrication processes. In this study, we have fabricated fuel electrode-supported tubular PCECs via a facile and well-controlled phase inversion methhod combined with a dip-coating process. When operated in a fuel cell (FC) mode, single cells exhibit excellent peak power densities of 0.48, 0.91, 1.50, and 2.62 W cm -2 at 550–700 ℃, respectively. While in electrolysis cell (EC) mode, these tubular cells achieve high electrolysis current densities of − 0.61, − 1.59, − 3.03, and − 4.67 A cm -2 with reasonable Faradaic efficiencies at 550–700 ℃ and an applied voltage of 1.3 V, respectively. Additionally, cells can be stably operated at 0.5 A cm -2 for 120 h in FC mode and − 0.5 A cm -2 for 110 h in EC mode at 650 °C.
研究领域:
能量转换与存储
·
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry A
·
2025
·Vol. 13
·期 23
·17932-17943
·
IF 9.5
Yitong Liang,Nan Zhang,Qiwen Chen,Shaoping Wu,Hezhou Liu,Huanan Duan
Gel polymer electrolytes (GPEs) exhibit significant potential in the development of lithium metal batteries owing to their safety and electrochemical stability. To achieve high-energy-density lithium metal batteries, it is of great significance to optimize the electrode structure to adapt the GPE. This work proposes a freeze-drying phase inversion (PI) technique to create a freestanding cathode with low tortuosity and vertically arranged microchannel structures. This unique architecture facilitates efficient lithium-ion transport and improves the wettability between the electrode and the electrolyte. Consequently, the LiFePO4 (LFP)/Li half-cell with an active material loading of 9.5 mg cm−2 exhibits a high discharge capacity (158.6 mA h g−1, with 96.3% retention after 250 cycles at 0.5C at room temperature). When integrated with in situ polymerized poly(1,3-dioxolane) (PDOL) gel electrolyte, the Li|PDOL-gel|PI-LFP battery with an active material loading of 9.5 mg cm−2 achieves a high discharge capacity of 132.47 mA h g−1 after 100 cycles at 0.5C at room temperature. At the same time, the kinetic transport in the interface is improved, reducing polarization and retaining high capacity at high discharging current density.
研究领域:
材料科学
·
电化学
·
储能技术
·
纳米技术
·
高分子科学
✓ 已验证
产品关联
DOI
高影响因子
Membranes
·
2021
·Vol. 12
·期 1
·42
·
IF 4.106
Xin Huang,Feng Tian,Guohong Chen,Fanan Wang,Rengui Weng,Beidou Xi
It is of great significance to search for efficient, renewable, biodegradable and economical membrane materials. Herein, we developed an organic-inorganic hybrid regenerated cellulose membrane (ZrO2/BCM) with excellent hydrophilic and anti-fouling properties. The membrane was prepared by introducing ZrO2particles into an N-Methylmorpholine-N-oxide(NMMO)/bamboo cellulose(BC) solution system by the phase inversion method. The physi-chemical structure of the membranes were characterized based on thermal gravimetric analysis (TGA), Fourier transform infrared spectroscopy (ATR-FTIR), field emission scanning electron microscopy (FE-SEM), and X-ray diffraction (XRD). The modified regenerated cellulose membrane has the excellent rejection of bovine serum albumin (BSA) and anti-fouling performance. The membrane flux of ZrO2/BCM is 321.49 (L/m2·h), and the rejection rate of BSA is 91.2%. Moreover, the membrane flux recovery rate after cleaning with deionized water was 90.6%. This new type of separation membrane prepared with green materials holds broad application potential in water purification and wastewater treatment.
研究领域:
材料科学
·
环境工程
·
纳米技术
·
膜技术
✓ 已验证
DOI
高影响因子
REACTIVE & FUNCTIONAL POLYMERS
·
2024
·
IF 4.5
Jikui Wang,Yuwei Feng,Yicheng Huang,Xinquan Zou,Yi Zhang,Wenxiu Liu,Kun Wang
Membrane separation technology is an important method of treating oily wastewater with great potential for development. However, preparation of membranes for efficiently separating complex oil-water mixtures continues to be challenging. In this study, a strategy for efficient construction of asymmetric wetting surfaces was designed, and successfully prepared an asymmetric super wetting Janus polyvinylidene fluoride (PVDF) modified separation membrane to separate complex oil-water emulsion. The composite PVDF membrane was prepared using a non-woven fabric substrate and phase conversion method. Subsequently, composite membrane was rapidly hydrophilic modified on one side using tannic acid and 3-aminopropyltriethoxysilane under the strong oxidizing effect of oxidant sodium periodate. Then non-woven fabric substrate was peeled off to obtain a Janus PVDF modified separation membrane. The front and back sides of the separation membrane have highly asymmetric micromorphology and wettability. The front side has hydrophilic/underwater oleophobic wettability (with a water contact angle of 31°). The separation efficiency of oil-in-water emulsion is up to 99.5%, while the back side has super lipophilic/underoil hydrophobic wettability (with a water contact angle of 131°). The separation efficiency of water-in-oil emulsion is up to 98.6%, improving the efficiency of oil in water separation and application range.
研究领域:
膜科学
·
环境工程
·
材料科学
✓ 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）