COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2025
·
IF 5.4
Shaohua Li,Zhenyu Xi,Songchen Xie,Guanlun Jiang,Xinmiao Zhang
Membrane fouling significantly impairs separation performance and durability. To address this, a bioinspired intermediate layer of dopamine methacrylamide (DMA) and (3-aminopropyl)triethoxysilane (APTES) was developed to enhance the grafting of poly(2-methacryloyloxyethyl phosphorylcholine) (PMPC) onto polyvinylidene fluoride (PVDF) membranes via surface-initiated polymerization. The incorporation of this intermediate layer enabled complete surface wetting of the zwitterionic monomer MPC, increasing the availability of reactive sites and yielding a grafting ratio of 183.4 μg/cm 2 , compared to 10.3 μg/cm 2 for unmodified PVDF surfaces. Furthermore, the DMA/APTES layer may undergo cross-linking through the addition of Fe 3+ , leading to an increase in the chemical stability of the coating when exposed to extreme pH conditions. The PMPC-modified membrane (PVDF-DMA-APTES-Fe-PMPC) exhibited marked superhydrophilicity, with a static water contact angle of 16.0° that rapidly dropped to 0° within 10 s. This hydrophilic transformation significantly reduced protein adsorption, lowering bovine serum albumin (BSA) accumulation to 19.3 μg/cm 2 , in contrast to 197.5 μg/cm 2 observed on pristine PVDF. Antibacterial assays further revealed a 1.6 log 10 reduction in Escherichia coli after 12 h of incubation, indicating effective resistance to bacterial adhesion. In filtration performance, the modified membrane maintained a high pure water flux of 336.3 LMH in the first cycle, coupled with excellent antifouling durability. This study showcases a versatile approach for modifying hydrophobic polymeric membranes, highlighting their possible applications in purifying protein−wasted water.
研究领域:
材料科学
·
膜技术
·
表面工程
·
环境工程
·
高分子化学
·
生物界面科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2020
·Vol. 31
·期 14
·11870-11877
·
IF 2.22
Chen Weigang,Yang Pengyu,Shen Wenfeng,Zhu Chaoting,Lv Dawu,Tan Ruiqin,Song Weijie
Flexible room temperature sub-ppm ammonia (NH 3 ) gas-sensing films based on polyaniline (PANI) nanoparticles were successfully developed on porous polyvinylidene fluoride (PVDF) substrate by in suit chemical oxidative polymerization method. The fabricated PANI/PVDF film sensor, which was synthesized with 0.1 mol/L aniline, possesses the best response value of 24.5% and 2.6% to 1 ppm and 0.1 ppm NH 3 at room temperature, respectively. Furthermore, the PANI/PVDF film sensor shows excellent selectivity towards NH 3 compared with methanol, ethanol, acetone, toluene, and formaldehyde at room temperature. The improved sensing performance is related to the porous PVDF nanostructure and synergetic effects of PVDF and PANI. Finally, the effect of working temperature and relative humidity on the sensing properties of the PANI/PVDF thin film sensor was also discussed and analyzed. The results show the potential application of the flexible PANI/PVDF film sensor for monitoring sub-ppm NH 3 gas under ambient conditions.
研究领域:
材料科学
·
传感器技术
✓ 已验证
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 2
·121939
·
IF 7.5
Yu Liu,Jinhai Xu,Shusu Shen,Xiaoji Zhou,Dapeng Liu,Ganwei Zhang
The development of photocatalytic self-cleaning membranes represents a promising strategy for addressing membrane fouling in dye wastewater treatment. NH 2 -MIL-88B(Fe) (NM88B) possesses excellent chemical stability, hydrophilicity and inherent photocatalytic activity, its practical application is limited by the low carrier mobility and the rapid recombination of photogenerated electron-hole pairs. In this experiment, NM88B@TiO 2 was synthesized by in-situ growth method, and was constructed to enhance charge separation and photocatalytic efficiency, and then NM88B@TiO 2 /polyvinylidene fluoride (PVDF) mixed matrix membranes (MMMs) were fabricated using the non-solvent induced phase separation (NIPS) method. The loading capacity of NM88B@TiO 2 could reach up to 2 %. The optimal membrane has a porosity of 86.02 %, which is 63 % higher than that of the original PVDF (52.78 %). The pure water permeability of the optimal membrane is 52.87 L·m −2 ·h −1 ·bar −1 , 2.5 times that of the original membrane. The water contact angle decreased from 85.6° to 40.4°, making the membrane highly hydrophilic. In the anti-BSA fouling experiment, the flux recovery rate (FRR) of the optimal membrane still maintained above 75 % even after 6 cycles, demonstrating excellent antifouling ability and also reusability. Moreover, the membrane showed a good rejection rate for various dyes. Additionally, this membrane exhibited excellent photocatalytic self-cleaning ability. After 7 photocatalytic self-cleaning cycles, the membrane permeability basically returned to its initial state, and the membrane maintained a good CR rejection rate (>90 %). During the continuous 72-hour CR filtration process, the permeability and rejection rate remained unchanged. These results highlight the potential of the NM88B@TiO 2 modified PVDF membrane as a photocatalytic self-cleaning membrane for treating wastewater containing dyes.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
·
2026
·
IF 7.1
Yuying Wang,Xuan Jiao,Binrui Wu,Yuanyuan Yang,Jiahao Li,Wanbo Chen,Xi Chen,Yaolong Yang,Hanghang Liu,Feiyan Fu
Superhydrophobic surfaces are widely recognized for their exceptional anti-fouling and self-cleaning properties, making them suitable for diverse applications. However, their fragile micro-nano structures are susceptible to mechanical damage, leading to a progressive loss of superhydrophobicity. To address this limitation, a novel superhydrophobic coating exhibiting robust mechanical stability through a primer-topcoat strategy. The coating comprises a top layer of fluorocarbon resin/hydrophobic iron oxide nanoparticles, bonded to an epoxy-based adhesive underlayer. This design provides superior liquid repellency (CA > 150°) and enhances substrate adhesion. The resulting coating demonstrates exceptional durability, maintaining its superhydrophobicity even after extensive abrasion (over 1000 cycles), high-temperature exposure (400°C), and prolonged immersion in strongly alkaline environments (over 120 h). This study presents a straightforward yet effective method for fabricating durable superhydrophobic coatings that retain long-term self-cleaning and anti-fouling performance under harsh conditions. The developed system exhibits broad application potential for scenarios demanding robust surface functionality.
✓ 已验证
产品关联
DOI
高影响因子
ChemSusChem
·
2022
·Vol. 15
·期 24
·e202201554
·
IF 9.14
Yuanjun Zhao,Yanyang Qin,Xinyu Da,Xianjun Weng,Yiyang Gao,Guoxin Gao,Yaqiong Su,Shujiang Ding
Due to the unique safety qualities, solid composite polymer electrolyte (SCPE) has achieved considerable attentions to fabricate high-energy-density lithium metal batteries, but its overall performance still has to be improved. Herein, a high lithium salt content poly(vinylidene fluoride) (PVDF)-based SCPE was developed, enhanced by hexagonal boron nitride (h-BN) nanosheets, presenting perfect electrochemical performance, fast ion transport, and efficient inhibition of lithium dendrite growth. The optimized SCPE (PVDF-L70-B5) could deliver high ionic conductivity (2.98×10 −4 S cm −1 ), ultra-high Li + ion transfer number (0.62), wide electrochemical stability window (5.24 V), and strong mechanical strength (3.45 MPa) at room temperature. Density functional theory calculation further confirmed that the presence of h-BN could promote the dissociation of bis(trifluoromethanesulfonyl)imide lithium (LiTFSI) and the rapid transfer of Li + ions. As a result, the assembled symmetric Li/Li battery and asymmetric Li/LiFePO 4 battery using PVDF-L70-B5 SCPEs both exhibited high reversible capacity, long-term cycle stability, and high-rate performance when cycled at 60 or 30 °C. The designed SCPEs will open up a new route to synthesize solid-state lithium batteries with high energy density and high safety. Graphical Polymer electrolyte : High lithium salt content poly(vinylidene fluoride)-based solid composite polymer electrolyte enhanced by hexagonal boron nitride nanosheets is prepared, which presents perfect electrochemical performance, fast ion transport, and efficient inhibition of lithium dendrite growth.
研究领域:
材料科学
·
电化学
·
能源存储
·
高分子科学
·
锂离子电池
✓ 已验证
DOI
高影响因子
SOLID STATE IONICS
·
2020
·
IF 3.107
Shuhong Yi,Tinghua Xu,Li Li,Mengmeng Gao,Kai Du,Huiling Zhao,Ying Bai
Organic-inorganic composite solid state electrolytes (SSEs), as one of the most attractive candidates for next generation SSEs, combines the both advantages of flexibility (from organic polymer) and structure rigidity (from robust inorganic constituent). In this work, a high performance three-dimensional (3D) crosslinked electrolyte with polymer poly(vinylidene fluoride) (PVDF) and polyethylene oxide (PEO) matrices is further modified by dispersing submicron fast ion conductor Li 1.4 Al 0.4 Ti 1.6 (PO 4 ) 3 (LATP). The optimal 3D composite SSE PVDF@10PEO-5LATP-5LiPF 6 (PPLL) shows high ionic conductivities of 5.24 × 10 −4 S cm −1 at 25 °C and above 10 −3 S cm −1 at 50 °C. Galvanostatic cycling test demonstrates that PPLL contributes to electrochemical performances, with high capacity retention of 93.95% after 500 cycles for LiFePO 4 cathode. Further investigations indicate its more benefits including excellent flexibility and superior safety. Intensive explorations imply that the interaction between dual-matrix degrades the respective crystallization through generating weak bonding, and the recombination with LATP further enhances ionic conductivity as well as structural stability of composite electrolyte via strengthening interface reaction, and reducing the organic crystallinity. This composite SSE with high conductivity and stability may be applied in next generation energy storage devices, particularly in all-solid-state secondary batteries.
✓ 已验证
DOI
高影响因子
ACS Applied Energy Materials
·
2023
·
IF 6.4
Huihui Gan,Jiajun Sun,Ye Xia,Pengyuan Qiu,Liang Li,Wen Zhu
Functionalized separator is more competitive than commercial polyolefin separator for rechargeable lithium-ion batteries. In this work, we design the separator modified by a composite coating layer, which is composed of Li6.75La3Zr1.75Ta0.25O12 (LLZTO), poly(ethylene oxide) (PEO), poly(vinylidene fluoride-hexafluoropropylene) (PVDF-HFP) and lithium bis(triuoromethanesulfonyl) imide (LiTFSI) (LLZTO-PEO/PVDF-HFP/LiTFSI, LLZTO-PPL). The LLZTO-PPL composite coating layer gives an impressive effect on dendrite inhibition of lithium metal. In comparison with commercial polyolefin separator, smaller overpotential value and better Coulombic efficiency are observed for the Li/LLZTO-PPL/Li symmetric cells and the Li/LLZTO-PPL/Cu asymmetric cells at various current densities of 0.2, 0.5, and 1 mA cm–2. Moreover, the LLZTO-PPL composite coating layer modified separator exhibits better high-rate capability and cycle performance for these cells assembled with different kinds of cathode materials (LiFePO4, LiCoO2, and LiNi0.8Co0.1Mn0.1O2) and their counterpart of a lithium metal anode. The functionalized composite coating layer modified separator may be a more attractive candidate material for commercial lithium-ion batteries.
研究领域:
材料科学
·
电化学
·
储能
·
电池技术
✓ 已验证
DOI
高影响因子
Journal of Physical Chemistry C
·
2024
·
IF 3.3
Changhai Zhang,Weidong Yan,Tongqin Zhang,Tiandong Zhang,Yue Zhang,Yongquan Zhang,Chao Tang,Qingguo Chi
With the goal of “dual carbon”, China’s clean energy industry has witnessed a rapid development period. As a key component of AC–DC conversion of clean energy, the usage of film capacitors is widespread in many fields such as photovoltaic power generation, wind power generation, and new energy vehicles. Therefore, how to develop film capacitors with high power density is the key to realizing energy savings and low-carbon environmental protection. In this paper, a P-X-P sandwich-structured composite dielectric with polycarbonate (PC) as the outer insulation layer and x wt % TiO2–PC/polyvinylidene fluoride as the middle polarization layer was designed and prepared by solution calendering and a hot pressing process, and its dielectric properties and insulation performance were optimized synergistically. It was found that when the TiO2 content of the intermediate layer was increased to 3 wt %, the P-3-P sandwich-structured film obtained outstanding energy storage capacity (Ue ∼ 11.69 J/cm3, η ∼ 93.86%) at a high field strength of 510 kV/mm. At the same time, the P-3-P sandwich-structured film has good charge–discharge characteristics (1.74 μs, 1.01 MW/cm3). It has a rapid pace of energy release and outstanding cycle stability after 50,000 charge–discharge cycles. The P-3-P sandwich-structured film provides excellent possibilities for the construction of high storage capacity film capacitors and could be used to its full potential in the field of film capacitors with high storage of energy.
研究领域:
材料科学
·
能源工程
✓ 已验证
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2020
·
IF 3.83
Yefeng Feng,Furong Zhou,Yanmin Dai,Zhichao Xu,Qihuang Deng,Cheng Peng
Graphene nanosheets are widely employed for fabricating high-dielectric-constant polymer nanocomposites for energy storage. However, severely reduced electric breakdown strengths of composites with increasing graphene content limit their high-field applications. To improve breakdown strengths of polyvinylidene fluoride/graphene composites without sacrificing dielectric constants, in this work, we proposed a rational strategy of constructing MXene quantum dot inter-layers for preparing ternary composites with desirable electric properties, owing to inter-layer induced quantum confinement and Coulomb blockade effects. Graphene oxide@nitrogen-doped Ti 3 C 2 MXene quantum-dot hybrid nanoparticles were synthesized via hydrogen-bond induced self-assembly route. Binary polymer/graphene and ternary polymer/hybrid-particle nanocomposite films were fabricated by solution cast process. Compared with binary composites, ternary counterparts have synergistically improved dielectric constants and breakdown strengths. Repeated disorder-bounce of electrons and strong coupling between electrons and holes, inside each quantum dot, might be responsible for superior electric performances of ternary composites. High dielectric constant (~53@1 kHz) and breakdown strength (~205 MV m −1 ) were realized in ternary composite with 0.12 wt % of nanoparticles . This work might pave a road for large-scale fabrication of high-performance nanocomposite dielectrics for energy storage.
研究领域:
材料科学
·
能源存储
✓ 已验证
DOI
高影响因子
ENERGY AND BUILDINGS
·
2026
·
IF 7.1
Kai Zhang,Xinlong Tai,Siying Jiao,Yichi Zhang,Qingchuang Zou
This study proposed a temperature adaptive regulation window that can be fabricated on a large scale for building energy savings. We first synthesized the modified PNIPAM hydrogel, and then the temperature adaptive regulation window was fabricated by incorporating the modified PNIPAM hydrogel with a PVDF membrane (TAR PP window) in a square acrylic glass mold. Then, the micromorphology, thermal response characteristics, and infrared spectroscopy of the modified PNIPAM hydrogel as well as the optical properties of the TAR PP window were characterized. Finally, the experiments were conducted to determine the thermal response characteristics of the TAR PP window, and preliminary calculations were also performed to derive the energy-saving potential and heat gain of the TAR PP window. By incorporating PVDF with the modified PNIPAM hydrogel, the TAR PP window not only achieves 80 % visible light modulation and 73 % solar modulation but also exhibits an emissivity of > 90 % within the atmospheric transparency window. In addition, the preliminary evaluation indicates that the energy consumption of the experimental chamber with the TAR PP window can be decreased by 31.6 % compared with that with the conventional double-glazed (CDG) window.
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2026
·
IF 8.2
Yechen Wang,Hao Yu,Sufang Guo,Qi An
In this work, PVDF-HFP-based piezoelectric composite films incorporating MgO and rGO nanofillers were fabricated via a facile phase-separation method. The influences of filler composition and loading amount on their piezocatalytic and antibacterial performances were systematically investigated. MgO@rGO/PVDF-HFP film (4 wt % of MgO and 4 wt % of rGO) exhibited the best piezocatalytic activity, achieving rapid degradation on RhB, MO, and MB dyes with high efficiencies of 95.88%, 91.42%, and 98.15%, respectively. The dyes were not only decolorized but also further mineralized into inorganic carbon. The composite film also demonstrated excellent antibacterial performance, reaching 100% inhibition against E. coli and S. aureus upon ultrasonication. The superior catalytic behavior is attributed to the formation of the MgO@rGO heterojunction, which optimizes the energy band for the redox reaction, thereby promoting the generation of reactive oxygen species (ROS). Under ultrasonic excitation, the MgO@rGO/PVDF-HFP film produced substantially higher ·O2–, ·OH, and H2O2 levels than the other films, and ROS-trapping experiments confirmed ·OH and electrons as the primary active species. These enhancements arise from efficient charge transfer across the MgO@rGO interface and chemically induced polarization within the PVDF-HFP matrix, which together strengthen the piezoelectric response. This study demonstrates that constructing heterojunction nanofillers in flexible polymers is an effective strategy to enhance piezocatalysis for environmental purification and antimicrobial applications.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2026
·
IF 8.8
Chenxuan Shao,Weijia Kong,Changqing Miao,Yafang Wu,Xiaohui Ju,Yujia Tong,Weixing Li,Weihong Xing
Separation membranes for purification of fermentation broths represent a significant research challenge. In order to enhance separation efficiency, a simple and rapid one-step method with self-assembly strategy for hydrophilic modified membranes was proposed. In order to shorten membrane fabrication time, ellagic acid (EA) oxidized by sodium periodate (SP) and then reacted with p-phenylenediamine (PPDA) via Michael addition and Schiff base reactions at 25 °C. A highly crosslinked hydrophilic network formed firmly adheres to PVDF substrate. According to molecular dynamic simulation, the adsorption energy for the proposed PVDF@EA-PPDA membrane with water reached −830 kcal/mol, which was 4.1 times that of pristine PVDF membrane. The modified membrane exhibited the high permeability of 11265 L m −2 h −1 ·bar −1 for water and 3450 L m −2 h −1 ·bar −1 for soy protein fermentation broth. The solids and oil rejection arrived at 99.3% and 99.9%, respectively. The developed membranes showed significant antifouling characteristics with the flux recovery rate exceeding 95%, which had promising potential for protein purification in biomedical field.
✓ 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）