POLYMER COMPOSITES
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2026
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IF 4.9
Wei Wu,Yangsheng Zhou,Zijian Tang,Xianwu Cao,Xiaolei Li,Chenhui Zhang
In this work, a hybrid filler g-C 3 N 4 @TiO 2 consisting of g-C 3 N 4 and TiO 2 was prepared by an in situ surface growth strategy. The hybrid was then incorporated into ultra-high molecular weight polyethylene (UHMWPE) by melt compounding to improve wear resistance. The morphology observation revealed that 3 wt% g-C 3 N 4 @TiO 2 could uniformly disperse in the UHMWPE matrix without visible aggregates. The UHMWPE composites containing g-C 3 N 4 @TiO 2 exhibited enhanced thermal stability, crystallinity as well as storage modulus. The tribological tests demonstrated that the UHMWPE composite containing 3 wt% g-C 3 N 4 @TiO 2 achieved the lowest coefficient of friction (0.162) and a significantly reduced wear rate (3.27 × 10 −6 mm 3 /N·m). These values represented reductions of 28.0% and 47.9%, respectively, compared to pure UHMWPE. The surface analysis confirmed that the presence of g-C 3 N 4 and TiO 2 had good synergistic effects on the formation of a continuous, compact tribofilm, which effectively reduced direct contact and abrasive wear. The improved tribological behavior is ascribed to the layered g-C 3 N 4 contributed lubrication through interlayer shearing, while TiO 2 nanoparticles enhanced the mechanical strength and wear resistance of the tribofilm, ensuring its durability under sliding conditions. This work offers a feasible way to develop hybrid additives for UHMWPE composites with low coefficient of friction and good wear resistance. Highlights A hybrid consisting of TiO 2 and g-C 3 N 4 was prepared successfully. The composite exhibited enhanced tribological performance. The addition of hybrid could effectively lower the coefficient of friction. The hybrid filler had good synergistic effects on reducing wear rate.
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高影响因子
POLYMER ENGINEERING AND SCIENCE
·
2026
·
IF 3.6
Xiaopeng Li,Qixiong Zhang,Tian Fang,Renlu Han,Yafei Hou,Jing Cuan,Weiping Li
Dielectric capacitors for pulsed power require stable operation at elevated temperatures, but commercial biaxially oriented polypropylene (BOPP) shows sharp performance degradation above ~105°C. Polyetherimide (PEI) is a promising polymer with high glass transition temperature, yet its low dielectric constant and poor thermal management limit high-temperature energy storage. Here, low-loading 2D Al 2 O 3 nanosheets (AO NSs) are introduced into PEI to simultaneously regulate charge transport and heat dissipation while avoiding the high-loading drawbacks of conventional 0D/1D ceramic fillers. The optimal 0.6 wt.% AO/PEI composite exhibits a high breakdown strength of 571.2 MV·m −1 at 25°C and retains 540.7 MV·m −1 at 100°C and 513.6 MV·m −1 at 150°C. Consequently, a maximum recoverable energy density of 7.9 J·cm −3 ( η > 90%) is achieved at 25°C, and 5.5 J·cm −3 ( η > 80%) at 150°C. Experiments combined with electric-treeing and temperature-distribution simulations verify suppressed field concentration and reduced heat accumulation, enabling stable performance over 10 4 cycles. These results demonstrate that low-content two-dimensional fillers provide an effective strategy for high-temperature dielectric energy storage. Highlights Low-content AO NSs enhance electrical and thermal properties in composites. The 0.6 wt.% AO/PEI composite shows high dielectric strength and stability at elevated temperatures. AO NSs suppress electric-field concentration and heat accumulation. Achieves 7.9 J·cm −3 energy density at 25°C and 5.5 J·cm −3 at 150°C.
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CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Yanqing Zu,Run Gan,Lixia Jing,Bing Yang,Binglin Zeng,Liru Yuan,Peitao Liu,Xiaodong Li,Ailing Feng,Lei Zhou
Lead-free vacancy-ordered double perovskites are promising scintillator candidates for X-ray imaging due to their excellent photoluminescence and low afterglow. However, the defect-related nonradiative recombination will decrease their photoluminescence intensity as well as scintillation performance. In this work, a facile room-temperature recrystallization approach was used to prepare high-quality Cs 2 HfCl 6 :1% Te perovskites microcrystals with suppressed defects via in situ ligand passivation with cationic quaternary ammonium surfactants. By tuning the chain length of ligands, dodecyltrimethylammonium chloride (DTAC) passivated Cs 2 HfCl 6 :1% Te possesses a high photoluminescence quantum yield (PLQY) up to 73.87%, which is higher than that of didodecyldimethylammonium chloride (DDAC) passivated Cs 2 HfCl 6 :1% Te. The improved performances of perovskites were further clarified by density functional theory (DFT) computations, which reveal that a larger binding energy for DTAC (−2.069 eV) exceeds that of DDAC (−1.891 eV). The Cs 2 HfCl 6 :1% Te (DTAC) exhibits a high spatial resolution (10 lp mm −1 ) and notable light yield (19,693 photons MeV −1 ). This study provides an effective strategy for defect suppression in perovskite scintillators, facilitating their use in high-resolution X-ray imaging.
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Journal of Materials Chemistry A
·
2026
·
IF 9.2
Abdul Shiferaw Qadir,Kejian Wang,Agasthiyaraj Lakshmanan,Raza Ullah,Mohamedazeem M. Mohideen,Alamgir Alamgir,Abdurohman Mengesha Mengesha Yessuf,Yong Liu
The development of efficient and cost-effective electrocatalysts is critical for advancing durable water-splitting systems. Special attention must be given to catalyst design, functionality, and interface regulation strategy to create synergistic effects that enhance electrocatalytic performance. We present a rational design of non-precious optimized heterojunction electrocatalysts comprising face-centered cubic nickel metal, cubic Ni₃S₄, and hexagonal NiS phases, supported on a 3D cross-linked carbon nanofiber (CNF) network. Detailed characterization reveals lattice-matching heterojunctions between Ni₃S₄, NiS, and Ni, where strong C-S bonding stabilizes the heterojunction and ensures effective electronic coupling. These heterogeneous interfaces serve as highly electroactive regions, significantly enhancing charge transfer, structural stability, and reaction kinetics. The optimized Ni₃S₄/NiS/Ni@CNF composite demonstrates exceptional bifunctional performance, achieving a low hydrogen evolution reaction overpotential of 88 mV at 10 mA/cm² with a Tafel slope of 34 mV/dec and an oxygen evolution reaction overpotential of 330 mV at 10 mA/cm² with a Tafel slope of 45 mV/dec, alongside excellent durability. The superior electrocatalytic performance is attributed to synergistic interactions at the Ni₃S₄, NiS, Ni, and CNF heterointerfaces, enhanced electronic conductivity, increased catalytic site exposure, and efficient interfacial charge transfer. This work offers a new strategy for the rational design of heterojunction-based materials with superior electrochemical performance in water-splitting applications.
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Advanced Healthcare Materials
·
2026
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IF 11
Jingwen Zhang,Zeqian Wang,Bingjie Mai,Shuyu Wang,Rui Liu,Zhe Jian,Ziwei Deng
Recent advancements in skin bioelectronics have significantly transformed personalized daily healthcare monitoring and wound management. Consequently, the development of advanced smart wound-dressing systems, such as bioelectronics-integrated wound dressings, has the potential to address numerous clinical challenges associated with effective wound management. Herein, we introduce a versatile Janus film composed of MXene@PEDOT:PSS and bacterial cellulose (designated as MPP/BC), developed as an innovative and adaptable bioelectronics-integrated wound dressing. This material is designed to enhance skin bioelectronics for health monitoring while facilitating accelerated wound healing. The resulting MPP/BC Janus film exhibits remarkable flexibility, high conductivity, photothermal sterilization capabilities, and excellent biocompatibility. These essential characteristics render it suitable for integration into a versatile epidermal sensor capable of real-time monitoring of various human physiological signals. Furthermore, this MPP/BC Janus film-based wound dressing demonstrates significant potential in enhancing therapeutic efficacy to promote wound healing by facilitating epithelial regeneration and increasing collagen deposition. Consequently, this study introduces a promising strategy for developing advanced smart wound-dressing systems aimed at accelerating and optimizing the wound healing process. This bioelectronics-integrated wound dressing holds significant potential for applications in skin bioelectronics, particularly in continuous health monitoring and intelligent wound management.
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PubMed
高影响因子
ChemistrySelect
·
2026
·Vol. 11
·期 12
·e07478
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IF 2.3
Xinde Jiang,Yi Zeng,Xian Li,Shuai Tian,Yilong Zou,Feng Jiang,Zi Long,Guiqing Gao,Manqing Xu,Zhanmeng Liu
Peroxymonosulfate (PMS)-mediated advanced oxidation processes have attracted increasing attention for the degradation of antibiotics in wastewater due to their high degradation efficiency and relatively low cost. However, the design of efficient catalysts for PMS activation remains a major challenge. In this work, an N-doped Fe 3 O 4 /CC900 catalyst was prepared via a hydrothermal method to activate PMS for tetracycline degradation. The degradation efficiency in the Fe 3 O 4 /CC900/PMS system reached 96.1% within 60 min, and the reaction rate constant reached 0.125 min −1 , which was about 1.19 times higher than that of the CC900/PMS system and 1.52 times higher than that of the Fe 3 O 4 /PMS system. Quenching experiments demonstrated that SO 4 • − , •OH, and 1 O 2 were the dominant reactive species during the reaction. Further studies revealed that the enhanced catalytic performance could be attributed to the synergistic activation between Fe 3 O 4 nanoparticles and CC900, which increased the number of reactive sites and the specific surface area, and pyridinic N, abundant surface hydroxyl groups, and the redox cycle of iron played critical roles in PMS activation. This study highlights the key role of N in improving the PMS activation, and provides a new insight for the rational design of environmentally friendly and efficient catalysts for wastewater treatment. Graphical
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高影响因子
Journal of Materials Chemistry A
·
2026
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IF 9.2
Yuan Zhou,Ruijun He,Nianbing Zhong,Hao Lei,Zhenting Xie,Qiao Lan,Xuefeng He
The hydrogen evolution reaction (HER) is a critical electrochemical process in water electrolysis. However, the development of binder-free, self-standing HER electrodes that combine high durability with low cost remains challenging. Herein, we propose a defect-mediated anchoring strategy to construct self-standing Pt electrodes by coupling electrochemical anodization with electrodeposition. Anodization reconstructs carbon fiber paper into a defect-rich, superhydrophilic substrate. During electrodeposition, Pt single atoms immobilized at carbon defect sites serve as nucleation centers and progressively grow into Pt nanoparticles. Benefiting from strong metal-support interactions and improved catalyst utilization, the optimized electrode delivers an ultralow overpotential of 12.7 mV at 10 mA cm⁻ 2 in 0.5 M H 2 SO 4 and a highest mass activity of 1 Pt A 2 mg 40.at 100 mV. Moreover, the Pt-1000@d-CF electrode exhibits superior stability, exhibiting only a 35.9% current density decay at 100 mV after an accelerated degradation test of 20000 cycles, which substantially outperforms commercial Pt/C (47%). This work highlights defect engineering of carbon substrates as an effective strategy to stabilize Pt species while maximizing catalyst utilization in self-standing HER electrodes.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Cheng Peng,Lei Yu,Guangduo Zhu,Zhinan Ren,Haishuang Liu,Yingjie Hao
Engineering bioresponsive materials for treating oxidative stress-induced degeneration remains a major challenge in intervertebral disc repair. We developed a UV-crosslinked injectable hydrogel composed of oxidized hyaluronic acid (OHA), gelatin, and polyethylene glycol diacrylate (PEGDA), co-loaded with quercetin and greigite nanozymes (G-NZ), termed OGPQ/G-NZ. This hydrogel exhibits robust structural integrity, shear resistance, and pH/reactive oxygen species (ROS)-responsive release of quercetin. G-NZ provides multi-enzyme–mimetic antioxidant activity, including superoxide dismutase, catalase, and glutathione peroxidase–like functions, along with antibacterial protection. In vitro, the hydrogel maintains nucleus pulposus cell (NPC) viability under oxidative conditions, reduces ROS accumulation, and promotes extracellular matrix (ECM) protein synthesis. In vivo application in a rat intervertebral disc degeneration (IVDD) model significantly preserved disc height, structure, and ECM integrity. RNA-seq and network pharmacology analysis identified PUM1/2-mediated degradation of E2F3 as a key regulatory pathway. Quercetin inhibits PUM1/2 expression, thereby stabilizing E2F3 mRNA and suppressing NPC senescence. Moreover, in vitro assays and CellChat-based single-cell analysis demonstrated that OGPQ/G-NZ modulates inflammatory macrophage polarization and enhances M2–NPC reparative signaling. These results highlight the hydrogel's engineered antioxidant and transcriptome-modulating properties as a promising platform for oxidative stress-responsive IVDD treatment.
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高影响因子
Advanced Composites and Hybrid Materials
·
2026
·
IF 15.5
Bai Tian,Qin Xionghai,Wu Zhenguo,Su Junjie,Li Lin,Yao Hang,Niu Zhaoxuan,Yue Chengbin,Wang Dong,Yue Yiying,Cheng Wanli,Zeng Chengjun,Zhao Wei,Han Guangping
Commercial airway stents often slip and deform, leading to severe complications such as mucosal injury, granulation tissue formation, and stent migration, which can cause recurrent airway obstruction and necessitate repeated interventions. Here, we introduce a 3D-printed tracheal stent composed of continuous bamboo fiber reinforced shape memory polylactic acid (BF/SMP). These naturally derived fibers (tensile strength ~ 1.90 GPa, modulus ~ 91.30 GPa) exhibit excellent mechanical resilience. Following an instantaneous thermal treatment, their interfacial compatibility with SMP is notably improved. The 30% BF/SMP stent can undergo over 1,000 three-point bending cycles under a 20 N load, with a bending deflection of 30.85%. In vitro, it promotes bronchial epithelial cell proliferation. Preliminary animal studies suggest that the biomass-based stent provides airway support without causing significant inflammation or organ abnormalities. Overall, this work demonstrates a biomass-reinforced, thermally deployable airway stent concept and provides a foundation for future studies on catheter-compatible delivery and long-term in vivo performance.
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高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2026
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IF 5.4
Qiumei Chen,Kai Jin,Yue Zhang,Richmond Polley,Jinpeng Tang,Dongbo Cui,Rui Zhuang
The development of high-performance nanocomposites critically depends on effective interfacial coupling agents, with multifunctional variants offering particular promise. Herein, we propose the rational design and synthesis of a multifunctional silane coupling agent via covalent organic framework (COF) self-assembly. This agent (COF-APTES) integrates a high density of amino groups and ethoxy silane terminals within a porous, thermally stable architecture. We demonstrate its application in grafting onto nano-SiO₂ to fabricate a modified filler (SiO₂-COF-APTES) for reinforcing epoxy composites. Comprehensive characterization reveals that the COF-APTES enhances the epoxy-filler interface through a synergistic mechanism: its abundant amino groups enable robust covalent bonding with the epoxy matrix, while its porous structure provides physical interlocking and promotes the formation of an interpenetrating network. Consequently, composites reinforced with SiO₂-COF-APTES exhibit a 71% increase in tensile strength and a 42% increase in shear strength compared to those with unmodified SiO₂. This work demonstrates that the COF self-assembly strategy can serve as a feasible approach for designing multifunctional coupling agents, providing a potential pathway to improve the interfacial properties and mechanical performance of polymer nanocomposites.
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高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2026
·
IF 9.1
Lijuan Chang,Xianli Wang,Chengbin Liu,Hang Wen,Zhijie Zhang,Chunxia Yao
Perfluorooctanoic acid (PFOA) has attracted growing attention due to its widespread occurrence and harmful effects on humans. Owing to the strong C F bonds that confer inherent stability on PFOA, achieving efficient degradation via traditional photocatalysts is highly challenging. In this study, a UiO-66-NH 2 photocatalytic-persulfate (UiO-66-NH 2 /PS) integrated system was constructed to achieve high-efficiency PFOA removal, and its underlying mechanism was systematically revealed. A zirconium-based metal–organic framework, UiO-66-NH 2 , with readily tunable porosity was successfully synthesized via a solvothermal route, and its crystal structure, microstructure, and optical absorption behavior were confirmed through comprehensive characterizations. After optimization of the reaction parameters, the UiO-66-NH₂/PS system exhibited excellent PFOA degradation performance, with a markedly enhanced removal efficiency relative to the single UiO-66-NH 2 or persulfate system. The degradation efficiency of UiO-66-NH 2 /PS system in degrading PFOA was affected by ubiquitous anions and humic acid in water. Investigation of degradation pathways revealed that the cooperative action of photogenerated holes and SO₄• − /•OH radicals progressively cleaved the recalcitrant C F bonds, with short-chain perfluorocarboxylic acids (PFCAs) including perfluoroheptanoic acid (PFHpA, C 6 F 13 COOH), perfluorohexanoic acid (PFHxA, C 5 F 11 COOH), perfluoropentanoic acid (PFPeA, C 4 F 9 COOH), and perfluorobutyric acid (PFBA, C 3 F 7 COOH) identified as the main degradation intermediates. This study proposed a high-efficiency, economical and eco-friendly approach for the mineralization of PFOA, and meanwhile shed new light on the mechanism underlying the efficient degradation of PFOA by UiO-66-based photocatalysis combined with persulfate activation.
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高影响因子
MICROCHEMICAL JOURNAL
·
2026
·
IF 5.2
Yan Xiao,XuBo Hou,WenYue Du,YouXing Li,Liang Guo
This study proposes a semi-open low-temperature plasma ambient ionization source coupled with ion mobility spectrometry for in situ analysis of multiphase samples. For the first time, a bidirectional plasma jet configuration is introduced into the IMS system, enabling the dielectric barrier discharge device to simultaneously generate an ionization jet and a transport jet. The ionization jet efficiently ionizes external samples, while the transport jet stably delivers the ionized products into the reaction region of the ion mobility spectrometer. The coordinated action of the two jets creates a plasma-rich ionization and transfer environment between the sample surface and the IMS inlet, effectively suppressing ion neutralization and ion loss, thereby enhancing signal intensity and detection sensitivity. To further optimize ion transmission, the semi-open ionization source is vertically coupled to the reaction region of the ion mobility spectrometer, which helps reduce direct intrusion of neutral gas into the drift region and improves signal stability. The system enables in situ detection without complex pretreatment, reducing background interference and improving the signal-to-noise ratio. Experiments demonstrate rapid detection of analytes including triethylamine, dimethylformamide, acetaminophen, caffeine, acetone, and ethanol, with clear separation between the reactant ion peaks and the analyte peaks. These results confirm the feasibility and application potential of the semi-open bidirectional low-temperature plasma dielectric barrier discharge ion mobility spectrometry system for rapid in situ detection of multiphase samples, providing a promising approach for environmental monitoring, public safety, food safety, and pharmaceutical analysis.
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高影响因子
危险品化学品经营许可证（带存储）