IONICS
·
2026
·
IF 3.4
Zhang Lingwen,Qin Wenqing,Long Jifa,Xiao Qi,Huang Suping
The persistent shuttle effect of lithium polysulfides (LiPSs) remains a major bottleneck hindering the widespread commercialization of lithium-sulfur (Li-S) batteries. Among the proposed solutions, MgO@carbon (MgO@C) composite interlayers have emerged as a highly effective strategy for suppressing LiPS migration through chemical adsorption and catalytic conversion. However, conventional synthesis routes for these materials often rely on costly and intricate chemical processes, limiting their scalability. In this study, we present an eco-friendly and cost-effective approach by fabricating MgO@C composites from dye sludge-derived carbon. The resulting nanoporous MgO@C interlayer exhibits strong hydrophilicity and abundant active sites, enabling efficient polysulfide immobilization via chemisorption while simultaneously accelerating sulfur redox kinetics. This dual functionality not only mitigates the shuttle effect but also enhances battery capacity and cycling stability - delivering exceptional electrochemical performance. This work offers a strategic approach for converting waste into valuable materials, paving the way for the scalable fabrication of high-performance interlayers in practical Li-S battery applications.
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DOI
高影响因子
ChemistrySelect
·
2026
·Vol. 11
·期 17
·e73324
·
IF 2.3
Zhi-Ke Wang,Xiao-Ying Ma,Yong-Long Tian,Chang Li,Kai Song,Ting-Ting Li
In this study, we fabricated a fibrous composite hydrogel material with microchannel structures for the adsorption of pollutants from wastewater. Leveraging the solid-to-liquid phase transition time differential of PVA short fibers and the porous structure of melt-blown nonwoven fabric, we constructed microchannels with varying size gradients for water transport within the hydrogel. This design accelerated water diffusion and enhanced pollutant adsorption efficiency. The results demonstrated that as the addition amount of PVA short fibers increased from 0% to 20%, the swelling ratio and maximum swelling ratio of the material increased, while the equilibrium adsorption time for pollutants was reduced by over 50 min. The Langmuir isotherm model revealed maximum adsorption capacities of 496.33 mg/g for Pb(II) and 297.35 mg/g for MB (Methylene Blue). Remarkably, the adsorption efficiency remained above 90% even under acidic conditions (low pH). Furthermore, after four consecutive adsorption-desorption cycles, the adsorption efficiency was maintained at over 88%. These findings indicate that this material exhibits significant potential for the efficient removal of aqueous pollutants, contributing to advancements in the field of adsorption science. Graphical A fibrous composite hydrogel with microchannel structures was fabricated for pollutant adsorption. PVA short fibers and melt-blown nonwoven fabric enabled rapid water transport, reducing equilibrium adsorption time by >50 min. Maximum Langmuir capacities reached 496.33 mg/g for Pb(II) and 297.35 mg/g for MB. Adsorption efficiency exceeded 90% at low pH and remained >88% after four cycles.
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高影响因子
DESALINATION
·
2022
·
IF 11.211
Lei Zhang,Dan He,Jia Li,Yanting Li,Yiming Xiao,Jun Xiang,Wei Du,Na Tang
In this work, PP-TSF superhydrophobic membrane was constructed by a triple layer on the PP membrane, containing titanium layer by atomic layer deposition , silica layer by sol-gel, and fluorine layer by chemical grafting. The titanium layer worked as a transition layer, increasing the binding stability between PP and the superhydrophobic layer, the silica layer provided more hydroxyl sites for superhydrophobic modification. Meanwhile, and the fluorine layer with low surface energy was the core of the superhydrophobic property. The microstructure, porosity, and pore diameter had no significant change after modification. The contact angle of the composite membrane was up to 158 o , and the rolling angle was less than 10 o . The hydrophobicity , self-cleaning properties, and surface roughness are significantly improved after modification. The salt retention of the high salt (15 wt%) was consistently higher than 99 % during the 21-h vacuum membrane distillation experiment.
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DOI
高影响因子
CHEMICAL ENGINEERING RESEARCH & DESIGN
·
2019
·
IF 3.073
Meihong Liu,Yiyang Wu,Yuchen Wu,Mingfu Gao,Zhenhua Lü,Sanchuan Yu,Congjie Gao
In this study, hydroxyethyl cellulose (HEC) was cross-flow deposited on flat-sheet polypropylene (PP) porous support and insolubilized by cross-linking using glutaraldehyde (GA) to fabricate cost-effective thin-film composite membrane for aqueous and non-aqueous nanofiltration. Membrane physico-chemical property, permeation performance, as well as tolerance to acid, alkaline and organic solvents were systematically characterized. The obtained HEC/PP composite membrane was found to be effectively modulated in pore size via changing HEC and GA contents and possessed good fabrication reproducibility. The desired HEC/PP composite membrane with an average pore diameter of around 2.21 nm exhibited high fluxes of 41.0 and 8.2 L/m 2 h to pure water and ethanol, respectively, and removals of 99.9%, 99.9% and 96.7% to 50 mg/L dye aqueous solutions of methyl blue, Congo red and sunset yellow, respectively. Soaking tests revealed that the HEC/PP composite membrane possessed good tolerance to acid, alkali and organic solvents of tetrahydrofuran, ethyl acetate and ethanol. Continuous filtration of dye/ethanol solution demonstrated that the HEC/PP membrane possessed excellent long-term durability in ethanol solution, maintaining a stable flux higher than 4.6 L/m 2 h and removals of 95.4% and 84.2% to methyl blue and Congo red, respectively, during the whole filtration of 110 h.
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高影响因子
Materials Research Express
·
2020
·Vol. 7
·期 1
·015316
·
IF 1.929
Chaoyuan Shen,Shiai Xu
Three functionalized polypropylenes (PPs) were successfully prepared for use as the inner adhesive layer of aluminum/polymer laminated film by melt grafting of maleic anhydride (MAH) on PP with styrene (St), diallyl phthalate (DAP) and triallyl isocyanurate (TAIC) as co-monomers, respectively. The effects of these co-monomers (St, DAP and TAIC) on the grafting degree of MAH, gel content, thermal property and adhesive performance of MAH grafted PP (PP-g-MAH) were investigated. The results show that the T-peeling and heat-sealing strengths of TAIC-assisted PP-g-MAH (PP-g-MAH/TAIC) are 28.6 and 70.4 N /15 mm, which are increased by 33.6% and 20.8% compared to DAP-assisted PP-g-MAH (PP-g-MAH/DAP), and by 142.4% and 81.0% compared to St-assisted PP-g-MAH (PP-g-MAH/St), respectively. The grafting degree of MAH reaches a maximum of 2.3 wt% in PP-g-MAH/TAIC, which leads to a higher crystallization temperature than PP-g-MAH/DAP and PP-g-MAH/St. PP-g-MAH/TAIC also has better thermal stability than the other two functionalized PPs, as TAIC can effectively reduce PP chain scission and promote the formation of a cross-linked structure during the melt grafting.
研究领域:
高分子化学
·
材料科学
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DOI
高影响因子
FOOD CHEMISTRY
·
2026
·
IF 10.4
Junxiang Zhang,Zixin Yuan,Yingli Guo,Baomiao Ding,Xingping Zhang,Xinjun Xu,Hualin Yang
The new probe PP(Fe)@HRP with high catalytic activity was used in immunoassay. • The proposed immunoassay showed excellent sensitivity for detecting OTA. • The proposed immunoassay had fluorescence and absorbance dual-mode. Ochratoxin A (OTA) is a mycotoxin with carcinogenic properties. Thus, it is essential to establish a sensitive method for detecting OTA. In this work, a colorimetric and fluorescence dual-mode OTA immunoassay was established based on PP(Fe)@HRP probe. The PP(Fe)@HRP probe consists of PCN-224(Fe), PtNPs and HRP, all of which possess peroxidase activity. When combined to form PP(Fe)@HRP, the peroxidase activity increased significantly. Then, the new probe was used to oxidize TMB to generate blue signal. Meanwhile, the TMB oxidation product (oxTMB) effectively quenched the fluorescence of GSH-AuNCs to generate fluorescence signal. By modifying antibody onto this probe, linking them to the target OTA, an ultra-sensitive dual-mode OTA immunoassay was achieved. This immunoassay demonstrated excellent sensitivity. The limit of detection (LOD) of colorimetric mode was 0.09 ng/mL, and the LOD of fluorescence mode was 0.02 ng/mL. Besides, the immunoassay had high specificity toward OTA and satisfactory recovery rate in corn samples. Download: Download high-res image (135KB) Download: Download full-size image
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DOI
PubMed
高影响因子
POLYMER
·
2025
·
IF 4.5
Lili Li,Yuzhe Li,Yulong Wang,Shuang Han,Jiangxu Li,Junguo Gao
As a new-generation cable insulation material, polypropylene (PP) has received much attention and replaced crosslinked polyethylene. However, the space charge accumulation under high fields still needs to be improved to ensure the safe operation of high-voltage direct current (HVDC) cables. Here, PP was chemically grafted with propenoxy-2-hydroxybenzophenone (AHB) to form PP-g-AHB, and ethylene tetrafluoroethylene copolymer (ETFE) was chemically grafted with glycerol (GL) to obtain ETFE-g-GL. Then PP/ETFE co-crystalline supramolecules were prepared via melt blending. The effect of hydrogen bonds on the space charge inhibition of PP/ETFE co-crystalline supramolecules was investigated using molecular dynamics simulation of differential charge density, energy band, and trap energy level combined with microstructure characterization. Simulations and experiments show that PP-g-AHB and ETFE-g-GL can form PP/ETFE co-crystalline supramolecules very well, owing to the existence of hydrogen bonds. When the mass fraction of PP-g-AHB is 80 %, the cocrystallization size of PP/ETFE supramolecules maximizes to 390 ± 10 μm. Under the action of direct current source, the carrier mobility of PP/ETFE co-crystalline supramolecules is as low as 7.94 × 10 −13 m 2 /(V.s), and the space charge is dominated by heteropolarity, when the average charge density minimizes to 0.08 C/m 3 . So far, the charge transport characteristics of PP/ETFE co-crystalline supramoleculars have been significantly improved using hydrogen bonds as a bridge. This study lays a foundation for the application of PP in HVDC cable insulation.
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高影响因子
Materials Today Communications
·
2025
·
IF 4.5
Jiawei Wei,Ruru Liu,Fang Wang,Xiangying Chen,Zhongjie Zhang
In present work, citric acid was used as a cross-linking agent to perform surface hydrophobization of magnesium oxysulfate (MOS) whiskers and bamboo flour (BF), producing PP/MOS/BF ternary composites via melt extrusion and injection molding processes. The results show that MOS increase the crystallization temperature, melting temperature, and degree of crystallinity of the composites, acting as heterogeneous nucleation agents. BF inhibits the crystallization process of PP, but when compounded with MOS, it enhances the crystallization performance of the ternary composites, leading to an increase in crystallinity. Additionally, the rigidity of MOS and the flexibility of BF synergistically enhance the adhesion between PP and the filler, thereby improving the mechanical properties of the ternary composites. Furthermore, the storage modulus and loss modulus of the ternary composites increase, while the loss factor and bonding factor decrease, with no significant change in the glass transition temperature. The good compatibility and bonding strength generated between MOS whiskers, BF, and PP result in optimal dynamic mechanics. For the M-B-30-3:1 sample, its tensile performance reaches 33.74 MPa, as well as bending strength and notched impact strength of 28.87 MPa and 9.77 kJ/m 2 , respectively.
研究领域:
材料科学
·
高分子科学
·
复合材料
·
表面化学
·
纳米技术
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DOI
高影响因子
Materials Today Communications
·
2024
·
IF 3.7
Zhenqiang Huang,Yanan Zhang,Ke Jia,Rui Zuo,Kemeng Ji,Mingming Chen
Lithium-sulfur batteries (LSBs) emerge as promising energy storage devices due to their high theoretical energy density . So far, there are constrained issues that need to be urgently addressed, such as the shuttle effect of lithium polysulfides (LiPS) and the sluggish kinetics of redox reactions . Herein, NiSe-Ni 2 P/C composite was synthesized and casted on the cathode side of polypropylene (PP) separator. This investigation reveals that the adsorption-catalysis synergistic effect of NiSe-Ni 2 P/C composite, accelerates the reduction of LiPS to lithium sulfide (Li 2 S) as well as the oxidation of Li 2 S. The synergistic effect effectively mitigates the shuttle effect of LiPS, reduces concentration polarization, and improves Coulombic efficiency (CE) throughout the entire lifespan. At a current density of 0.05 C, LSBs with NiSe-Ni 2 P/C modified PP separators exhibit a remarkable high initial CE of 97.0% and a substantial discharge specific capacity of 1205.4 mAh g s −1 . Even under conditions of a high sulfur loading (4.3 mg cm −2 ) and a limited electrolyte dosage (10 μL mg s −1 ), the LSBs maintained a reversible specific capacity of 804 mAh g s −1 , a CE of 94%, and an energy density of 1232.1 Wh kg s −1 after 720 h of continuous cycling at 0.05 C. This work provides a solution for achieving long-time, high-capacity, and high-CE electrochemical performance in LSBs with a high sulfur loading and a limited electrolyte dosage.
研究领域:
能源存储
·
材料科学
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高影响因子
JOURNAL OF ELASTOMERS AND PLASTICS
·
2017
·
IF 0.787
Quan Zhou,Lu Yan,Xuejun Lai,Hongqiang Li,Xingrong Zeng
A new kind of polypropylene/ethylene–propylene–diene monomer (PP/EPDM) thermoplastic elastomer (TPE) with good mechanical properties and flame retardancy was prepared via in situ peroxide-induced dynamic vulcanization using lanthanum trimethacrylate (LaTMA) as a reinforcing agent. The morphology, structure, and mechanical properties and reinforcement mechanism of PP/EPDM/LaTMA TPE were investigated by scanning electron microscopy (SEM), Fourier transform infrared (FTIR) spectroscopy, rubber process analyzer, cross-link density test, and so on. The flame retardancy was investigated by limiting oxygen index (LOI) test. The results showed that when the amount of lanthanum oxide was 4.96 phr and methyl methacrylate was 7.85 phr, the compatibility between EPDM and PP was greatly improved. Besides, the tensile strength, tear strength, elongation at break, and hardness (shore A) of PP/EPDM/LaTMA TPE were increased from 6.2 MPa, 41.7 kN m−1, 148%, and 81 up to 11.1 MPa, 77.3 kN m−1, 365%, and 89, respectively. And the LOI of PP/EPDM/LaTMA TPE was increased to 19.0%. The SEM images, the higher G′, and the ionic cross-link suggested that a strong filler–filler network was formed by the polymerization and the grafted of LaTMA in the PP and EPDM phase which enhanced the compatibility between PP and EPDM. The DSC and FTIR results further proved that during the processing.
研究领域:
材料科学
·
高分子化学
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DOI
高影响因子
RESEARCH ON CHEMICAL INTERMEDIATES
·
2018
·Vol. 44
·期 10
·5697-5709
·
IF 1.674
Liu Xin,Dang Li,Nai Xueying,Dong Yaping,Li Wu
Well-dispersed, high-aspect-ratio 4ZnO·B 2 O 3 ·H 2 O whiskers (4ZnO·B 2 O 3 ·H 2 O HARw ) were synthesized by a facile hydrothermal method with the aid of ZnSO 4 ·7H 2 O. The formation mechanism was investigated, and the results showed that Zn 2+ and SO
2− 4
ions played a crucial role in the control of 4ZnO·B 2 O 3 ·H 2 O HARw extended along [010] direction. X-ray diffraction (XRD) analysis, high-resolution transmission electron microscopy (HR-TEM), X-ray photoelectron spectroscopy (XPS), and thermogravimetry (TG)-differential scanning calorimetry (DSC) results confirmed that the powder was 4ZnO·B 2 O 3 ·H 2 O. Scanning electron microscopy (SEM) and TEM showed that the average aspect ratio of the product was about 100. Nanocomposites of surface-modified 4ZnO·B 2 O 3 ·H 2 O SM-HARw /PP were prepared and their mechanical properties measured. The results suggested that the mechanical properties of 4ZnO·B 2 O 3 ·H 2 O SM-HARw /PP composites were superior to composites made with low-aspect-ratio whiskers (4ZnO·B 2 O 3 ·H 2 O SM-LARw ), which displayed poorer mechanical properties even at low addition.
研究领域:
材料科学
·
高分子科学
·
纳米技术
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DOI
高影响因子
ELECTROCHIMICA ACTA
·
2022
·
IF 7.336
Ling Yang,Lei Sheng,Xingxu Gao,Xin Xie,Yaozong Bai,Gaojun Liu,Haoyu Dong,Tao Wang,Xianli Huang,Jianping He
Lithium metal batteries (LMBs) with ultra-high theoretical energy density are a prospective candidate to replace current lithium-ion batteries (LIBs). However, there are still two non-negligible problems of lithium dendrites and the volume expansion effect of LMBs. In this study, reduced graphene oxide (rGO)/Li-Al-LDH composite nanosheets were firstly prepared via a hydrothermal method and then vacuum filtered onto commercial polypropylene (PP) separator. This kind of rGO/Li-Al-LDH nanosheets layer is expected to improve the wettability of liquid electrolytes and thermal stability. Furthermore, rich- Li-Al LDH can promote more ionic carriers and channels, which exhibits higher-efficiency lithium-ion transport properties. Meanwhile, rGO with a graphitic-like structure is able to disperse the concentration of electrons at the sharp point when lithium dendrites arise. As a result, the discharge capacity of the Li||LiFePO 4 cells based on the rGO/Li-Al-LDH@PP separator is still 1.852 mAh after 250 cycles and the capacity decay rate is just 4.24%. It is demonstrated that a feasible and effective strategy for the modified separator can enhance the electrochemical performance of LMBs.
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高影响因子
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