JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
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2020
·Vol. 31
·期 14
·11870-11877
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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
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
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2026
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IF 3.1
Xiang Chen,Xun Luo,Mihan Zhang,Xiwen Qiu,Fan Meng,Chenglong Wang,Han Zhu,Jinhuan Zheng
Two-dimensional (2D) piezoelectric semiconductors, specifically molybdenum disulfide (MoS 2 ), have emerged as premier candidates for next-generation nanoscale tactile sensors due to their exceptional electron mobility, high polarization rates, and low power consumption. However, the inherent rigidity and structural brittleness of MoS 2 hinder its seamless integration into flexible, wearable platforms. Herein, we report a synergistic strategy combining mechanical ball milling and electrospinning to fabricate high-performance MoS 2 carbon nanocrystal/polyvinylidene fluoride (MoS 2 -CNCs/PVDF) nanofibrous membranes on textile substrates. By utilizing polyvinylpyrrolidone (PVP) as a macromolecular surfactant, we achieved superior filler dispersion and optimized interfacial bonding within the polymer matrix. At an optimal PVP concentration of 10%, the composite exhibits a piezoelectric coefficient ( d 33 ) of 34 pC/N—a 1.3-fold increase over pristine PVDF and delivers a peak output voltage of 2.12 V under a 0.5 N load with high linearity ( R 2 > 0.93). Furthermore, the hierarchical composite architecture yields robust mechanical properties, including a tensile strength of 19 MPa and 100% elongation at break, effectively overcoming the traditional brittleness of inorganic MoS 2 systems. Integrated into elastic textiles, the resulting sensor enables high-fidelity real-time monitoring of physiological signals, including radial pulse, respiratory rhythms, and joint kinematics. This work provides a scalable pathway for health diagnostics and human-machine interaction.
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高影响因子
JOURNAL OF MEMBRANE SCIENCE
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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.
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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.
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高影响因子
COMPOSITES SCIENCE AND TECHNOLOGY
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2026
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IF 9.9
Arif Hussain,Suibin Luo,Jawaria Jawaid,Asad Muhammad Khan,Waqas Saif,Yan-Fei Huang,Ruiheng Liu,Shuhui Yu
Polymer composites have emerged as promising tunable dielectric material in microwave devices owing to their low density, flexibility, and ease of processing compared to rigid ceramic counterparts. Nevertheless, their progress is constrained by limited tunability ( T u ) and the requirement of high bias fields. Herein, we integrate ferroelectric Barium Strontium Titanate (BST) with electrically nonlinear Carbon Nanotubes (CNTs) in core-shell configuration to achieve high T u under ultra-low bias. The resulting nanocomposite exhibited high T u of 38.92% at an exceptionally low DC bias field of 0.23 V cm -1 , representing a 1.72-fold improvement over conventional systems. Importantly, dielectric loss (tan δ ) is well-suppressed from 273.76 to 2.27 (at 100 kHz) due to effective charge trapping at the core-shell interface, which prevents direct electron hopping between conductive pathways. Furthermore, the dielectric breakdown strength ( E b ) reaches 253.9 kV cm -1 at 1 vol% loading, nearly double of the uncoated conductive filler system (129.03 kV cm -1 ). These results highlight a new paradigm for combining nonlinear and ferroelectric materials within a core-shell architecture to realize low-bias, high-performance dielectric nanocomposites, offering significant potential for flexible electronics and next-generation microwave systems.
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高影响因子
CHEMICAL ENGINEERING SCIENCE
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2026
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IF 5.1
Yaohan Du,Lu Zhou,Can Deng,Jie Zheng,Li Chen,Liang Shen,Menghao Lin,Wei Zhou,Lichun Dong,Cailong Zhou
To construct a pervaporation alcohol-water separation membrane with high adsorption and dissolution selectivity, as well as fast internal transport channels, covalent organic framework (COF)/PDMS mixed matrix membranes were prepared. The selected hydrophobic fluorine-containing COF, TAPB-TFA, is purely organic, has a uniform spherical shape, and exhibits excellent interfacial compatibility with the PDMS. The TAPB-TFA/PDMS coating was casted into the porous PVDF membrane to form a compact inner selective layer. Meanwhile, the rough surface with honeycomb-like folds of the PVDF membrane was quite preserved, enhancing the hydrophobicity of the membrane surface. This structure provides numerous solvent adsorption sites for alcohols while effectively inhibiting the passage of water. Simultaneously, TAPB-TFA has a well-defined pore structure, offering numerous channels for the rapid transport of alcohols, thereby enhancing their diffusion rates. The flux of the optimized TAPB-TFA/PDMS@PVDF membrane was 4.52 ± 0.13 kg·m −2 ·h −1 with a high separation factor of 10.9 ± 0.32 for 5 wt% ethanol aqueous solution.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
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2026
·
IF 12.5
Qiujun Wang,Wei Zhang,Gaofeng An,Zhaojin Li,Huilan Sun,Qujiang Sun,Di Zhang,Ranran Li,Fei Yuan,Bo Wang
PEGDME and Li 3 OCl synergistically reduce the crystallinity of PVDF and create additional Li + transport pathways. • The modified PVDF electrolyte exhibits an ionic conductivity of 8.65 × 10 −4 S cm −1 and a Li + transference number of 0.55 at 25 °C. • The assembled LFP cell maintains 80.2% capacity after 500 cycles at 0.5C and 25 °C Owing to superior flexibility and processability, polymer electrolytes have received considerable research attention. Poly(vinylidene fluoride) (PVDF) is a promising electrolyte candidate with high dielectric constant and tunable chain structure, Nevertheless, in lithium metal batteries (LMBs), its high crystallinity results in insufficient Li-ion conductivity, while its inherent porous structure tends to induce uneven Li deposition, thereby causing poor electrolyte-electrode interfacial stability. Herein, a novel PVDF-based composite solid electrolyte is developed by introducing the plasticizer poly(ethylene glycol) dimethyl ether (PEGDME) and Li-rich anti-perovskite Li 3 OCl as fillers. Li 3 OCl can complex with PVDF and induce deprotonation, offering an extra Li + transport pathway, while the synergistic effect between PEGDME and Li 3 OCl effectively reduces PVDF crystallinity and promotes chain mobility. This synergistic design suppresses polymer crystallization, introduces additional Li + conduction channels, and prevents Li dendrites, leading to markedly improved Li + transference number and ionic conductivity, along with a stabilized electrolyte–electrode interface. At 0.5C and 25 °C, the Li | PVDF-LiTFSI-PEGDME-1%Li 3 OCl | LiFePO 4 cell exhibits a capacity retention of 80. 2% after 500 cycles. This research provides an innovative strategy for constructing solid electrolytes with favorable interfacial compatibility and superior ionic conductivity for high-performance LMBs. This study used a solution casting method to prepare a composite polymer solid electrolyte with polyvinylidene fluoride (PVDF) as the polymer, polyethylene glycol dimethyl ether (PEGDME) as the small molecule plasticizer, and lithium rich perovskite resistant Li 3 OCl as the inorganic filler. PEGDME and Li 3 OCl inhibited the crystallization of PVDF, opening up additional channels for Li + transport and significantly improving the efficiency of Li + transport. Meanwhile, the introduction of Li 3 OCl effectively suppressed the growth of lithium dendrites and improved the electrode electrolyte interface problem. After 500 cycles at 0.5C and 25 °C, the capacity retention rate of the assembled LiFePO 4 (LFP) battery reached 80.2%. Download: Download high-res image (182KB) Download: Download full-size image
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高影响因子
NEW JOURNAL OF CHEMISTRY
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2026
·
IF 2.6
Tongyao Pang,Wei-Wei Zhao,Rong Ma,Min Xi,Shuhua Liu,Jinhong Li,Lijun Ren,Hui Wang,Weixing Zhao,Yan Wang,Huiqin Li,Dong-Mei Wang,Dengwei Hu,Bin Cui
Polyvinylidene fluoride (PVDF)-based piezoelectric materials show strong potential for use in flexible sensors and actuators. However, increasing the proportion of the electroactive β phase and improving interfacial compatibility with inorganic fillers remain major challenges. In this work, an interfacial transition-layer strategy is proposed using mesoporous SiO2 (mSiO2) is used to coat barium strontium titanate submicron particles (BST@mSiO2 SMPs). This alleviates the organic-inorganic interface mismatch and forms a coherent BST-mSiO2-PVDF transition structure. This architecture not only strengthens interfacial adhesion but also facilitates the crystallization of the electroactive β phase. Fourier-transform infrared spectroscopy reveals that at a BST@mSiO2 loading of 0.4 wt%, the composite attains a total β- and γ-phase content of 79%, with the pure β phase contributing 69%. When an external voltage is applied, the composite film exhibits self-excited vibration with a maximum displacement amplitude of 110 μm. These results demonstrate that interfacial transition-layer engineering is an effective approach for developing high-performance PVDF-based piezoelectric composites for flexible electronic devices and smart systems.
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高影响因子
ACS Applied Energy Materials
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2026
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IF 5.5
Wenxin Shi,Qingmei Su,Xuan Li,Huayu Li,Siyu Wang,Weihao Shi,Liming Wang,Yinyin Song,Shan Yang,Gaohui Du,Miao Zhang,Wenqi Zhao,Bingshe Xu
The development of composite solid electrolytes with high ionic conductivity and superior interfacial stability is crucial for practical all-solid-state lithium metal batteries (ASSLMBs). Herein, a high-performance bilayer composite separator is designed by integrating Li0.33La0.557TiO3 (LLTO) nanofibers into a poly(vinylidene fluoride) (PVDF) matrix, which is coated onto a polyethylene (PE) substrate. The interconnected LLTO nanofibers construct three-dimensional continuous ion-conducting pathways and reduce the crystallinity of the polymer matrix, endowing the optimized separator (with 60 wt % LLTO) with a high ionic conductivity of 5.17 × 10–4 S cm–1, a large lithium-ion transference number (tLi+= 0.81), and a wide electrochemical stability window up to 4.87 V. The unique bilayer architecture, where the LLTO/PVDF layer facilitates rapid Li+ transport and the PE layer ensures interfacial compatibility, enables stable lithium plating/stripping over 500 h and yields a high critical current density of 2.9 mA cm–2. Furthermore, the robust mechanical properties of the separator ensure uniform lithium-ion flux and effectively resist lithium dendrite penetration. When applied in NCM811/Li metal battery, this modified solid-state electrolyte separator enabled remarkable cycling stability (89.8% capacity retention after 200 cycles at 5C) and exceptional rate performance (115.4 mAh g–1 at 5C). This work provides a feasible and effective strategy for designing composite separators toward high-energy-density and dendrite-free ASSLMBs.
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高影响因子
Inorganic Chemistry Frontiers
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2026
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IF 6.2
Zikang Ruan,Xianhe Meng,Tingting Jiang,Nengjun Yu,Yufei Gong,Xiaoyu Hu,Anchun Tang,Qiaoling Kang,Lijing Yan,Chubin Wan
PVDF-based polymer electrolyte has been widely studied because of its good mechanical strength, easy processing, excellent thermal/chemical stability. However, pure PVDF has the problems of low ionic conductivity and insufficient interface stability with the electrodes. Herein, this research presents a facile strategy for fabricating Ce-MOF-derived rodlike nanocrystalline CeO2 to incorporate composite polymer electrolytes for Li-metal batteries. The CeO2-PVDF-HFP composite polymer electrolytes (CPEs) could achieve enhanced ionic conductivity and interfacial stability.Notably, the ultrasmall nanocrystalline CeO2-PVDF-HFP CPEs demonstrates superior Li⁺ transport kinetics (5.04×10⁻⁴ S cm⁻¹), lithium dendrite suppression and an extended electrochemical stability window up to 4.6 V. When applied in Li| LiMn0.6Fe0.4PO4 full batteries, the quasi-solid polymer electrolyte system could maintain a discharge capacity of 94 mAh g⁻¹ after 100 cycles at 0.5 C, deliver good cycling stability and rate capability retaining 99% capacity after prolonged 500 circles at 1 C. These advancements highlight special functional nanocrystalline fillers improve the performance of PVDF-based polymer electrolyte, offering a promising pathway for developing reliable solid-state lithium metal batteries.
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高影响因子
LANGMUIR
·
2026
·
IF 4.4
Ziwei Wu,Xinpeng Chen,Jingqi Cao,Yifeng Wang,Yongxuan Xiang,Yixiao Li,Haoyu Wang,Hongmei Cao,Tieling Xing
Photocatalysis and piezocatalysis rely on light energy and mechanical energy (via the piezoelectric effect) as driving forces, respectively. Both have been successfully applied to pollutant degradation and wastewater treatment as advanced oxidation processes. However, in this study, BiFeO3 nanoparticles derived from MIL-101 were solidified in a flexible polyvinylidene fluoride (PVDF) porous structure, forming a dynamic synergistic effect between the piezoelectrically polarized electric field induced by mechanical agitation and the photogenerated carriers. Additionally, the hydrolytic inactivation of the material was inhibited by the chemical barrier effect of PVDF, while the charge separation at the heterojunction interface was directionally driven by the built-in electric field generated by the piezoelectric effect. The BiFeO3/PVDF composite membrane degraded 97.1% of RhB after 60 min of treatment under the synergistic effect of stirring and light. Free radical trapping and electron spin resonance (ESR) analysis confirmed that •O2– and •OH were the key active species (contributing over 60%). Piezoresponse Force Microscopy (PFM) test revealed the mechanism behind the enhancement of the built-in electric field, and density functional theory (DFT) calculations combined with Fukui’s function elucidated that the N4, N5, and C6 sites in the RhB molecule were the preferred targets for free radical attack. Plant growth experiments verified the environmental safety of the system. The BiFeO3/PVDF porous composites with piezoelectric photocatalytic properties proposed in this study provide a promising solution for developing novel materials for efficient catalysis of organic pollutants in water.
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DOI
PubMed
高影响因子
ECS Journal of Solid State Science and Technology
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2026
·Vol. 15
·期 5
·053006
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IF 2.4
Hui Liu,Anqi Li,Qingnan Chen
The improvement in energy storage performance of graphene/polymer composites has long been restricted by insufficient breakdown strength (Eb) and high dielectric loss, both of which result from conductive losses caused by the aggregation of graphene nanosheets. In this paper, aminopropylisobutyl polyhedral oligomeric silsesquioxane (POSS-NH2) encapsulated graphene oxide (GO) (GO-g-POSS) hybrids were prepared to inhibit the restacking of graphene and block the formation of conductive paths. Furthermore, the design of sandwich-structured films is also an efficient approach to improving the breakdown performance of composite materials. Novel sandwich-structured composite films containing outer layers of BNNS/PVDF films and a middle rGO-g-POSS/PVDF layer were successfully prepared by the layer-by-layer assembly process. The B-0.50-B sandwich-structured composites achieved an optimal discharge energy storage density (Ue) of 9.08 J cm−3 and Eb of 432 MV m−1.
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高影响因子
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