OPTICAL MATERIALS
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2025
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IF 4.2
Zongbin Liu,Xiaojiao Yu,Kai Wang,Yuchen Wei,Jian Zhang,Jinfen Niu
Photocatalytic technology has received a great deal of attention due to its high efficiency and environmentally friendly properties in the treatment of wastewater. MXene, a rapidly expanding family of two-dimensional materials, is widely used in various fields due to its unique layered structure, large specific surface area, excellent hydrophilicity and strong electrochemical performance. In this paper, a simple hydrothermal method has been used to synthesize Cu 2 O-MXene(Ti 3 C 2 ) photocatalysts. The successful introduction of Ti 3 C 2 MXene reduced the surface transfer resistance to promote electron transfer, effectively inhibited electron-hole complexation and increased the specific surface area of the catalyst. The prepared samples have excellent photocatalytic properties due to the above-mentioned advantages. Efficient degradation of antibiotics was achieved with the maximum degradation rate of sulfamethazine (SM2) by M 2 -Cu 2 O reaching 85.7 % in 160 min. It was experimentally confirmed that • O 2 ‐ and h + played the major roles in the degradation process, and possible degradation pathways and photocatalytic mechanisms were proposed in conjunction with HPLC-MS/MS. Finally, the intermediate products were tested for their biotoxicity. This work provides a strategy for the construction of highly catalytically active Cu 2 O-based catalysts.
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高影响因子
PROGRESS IN ORGANIC COATINGS
·
2025
·
IF 7.3
Wei Chen,Zhirui Zhu,Xingyang He,Ying Su,Chao Yang,Zihao Jin,Huahui Qi,Cong Tian,Zewen Wu,Shiyu Guan,Dakun Tang
Exploiting biomass polyurethane (PU) coatings derived from vegetable oil adhere to sustainable development strategy, however it faces challenge like inferior wet bonding performance and insufficient protective properties to concrete under harsh marine environment. In this work, inspired by the catecholic chemistry of mussels, the eco-friendly biomass PU was synthesized by hydroxylation and stepwise polymerization of epoxy soybean oil, and by utilizing the catechol-based chemical covalent crosslinking combined with incorporation of polydopamine (PDA) surface modified MXene to composite modify the biomass PU, aiming at enhancing the interfacial bonding performance on moist concrete and its protective properties simultaneously. The Biomass PU composite coating's mechanical and thermal properties, crystallinity, UV aging resistance, water resistance and protective performance of concrete were systematically investigated, the interfacial bonding on wet substrates and protection mechanisms between the Biomass PU and cement-based materials were also revealed. The results demonstrated that DA covalent cross-linking and incorporating PDA@MXene nanosheets into the biomass PU composite significantly enhanced the wet bonding and protective performance to the cementitious substrate. The synergistic enhancement effects of cohesion strength of the biomass PU and favorable interfacial interaction promote the wet bonding strength. The strong covalent crosslink formed between PDA@MXene and the Biomass PU minimized interfacial defects and improved interfacial compatibility, while the well-dispersed PDA@MXene within the PU matrix created a labyrinth effect that extended the diffusion pathways of water and corrosive ion. This work provided a sustainable approach for constructing high-performance biomass PU coatings, offering an effective solution for the long-term corrosion protection of cementitious materials.
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ACTA PHYSICO-CHIMICA SINICA
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2026
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IF 13.5
Shijie Zhang,Naqi Wang,Shun Wang,Li Tian,Panpan Wang,Xiaowei Liang,Airong Wang,Yupeng Shi,Zhiwei Zhao
A novel solid-solution (Ta 2/3 Ti 1/3 ) 2 CT x MXene/CuInS 2 heterostructure was constructed. • Multi-scale dielectric loss engineering was achieved through the synergisy of defects, heterointerfaces, and conductive networks. • The TTC/CS-3 composite delivered a broad EAB of 4.56 GHz at only 1.9 mm. • Interfacial charge redistribution and balanced impedance matching cooperatively enabled efficient EWs attenuation and radar stealth performance. The rational regulation of dielectric loss behavior and impedance matching remains a critical challenge for developing high-performance electromagnetic wave absorbers. Herein, a novel solid-solution (Ta 2/3 Ti 1/3 ) 2 CT x MXene/CuInS 2 (TTC/CS) heterostructure was successfully fabricated through a microwave-assisted solvothermal strategy. Benefiting from the intimate coupling between conductive MXene nanosheets and semiconductive CuInS 2 , a multi-scale dielectric loss engineering platform was established to simultaneously optimize electromagnetic attenuation capability and impedance matching characteristics. Structural analyses demonstrate the successful formation of abundant TTC/CS heterointerfaces accompanied by significant interfacial charge redistribution. The synergistic effects originating from intrinsic vacancies, surface functional groups, multi-cation configurations, and heterojunction interfaces generate abundant polarization centers and multiple dielectric relaxation processes. Meanwhile, the interconnected layered architecture promotes charge transport, conduction loss, and multiple reflections/scattering of incident electromagnetic waves. As a result, the optimized TTC/CS-3 composite exhibits superior electromagnetic wave absorption performance, delivering a broad effective absorption bandwidth (EAB) of 4.56 GHz at a thickness of only 1.9 mm. Electromagnetic parameter analysis reveals that the outstanding performance originates from the cooperative optimization of attenuation capability and impedance matching. Furthermore, radar cross-section simulations demonstrate significantly suppressed electromagnetic scattering behavior for the optimized composite. This work provides an effective strategy for constructing MXene-based heterostructures through multi-scale dielectric configuration and offers new insights into the design of lightweight, broadband, and highly efficient electromagnetic protection materials. A novel (Ta 2/3 Ti 1/3 ) 2 CT x MXene/CuInS 2 heterostructure was constructed for efficient electromagnetic wave dissipation. The synergistic integration of intrinsic defects, heterointerfaces, and interconnected conductive networks enabled multi-scale dielectric loss engineering, promoting interfacial polarization, charge transport, and multiple scattering. Download: Download high-res image (286KB) Download: Download full-size image
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CHEMICAL ENGINEERING JOURNAL
·
2026
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IF 12.5
Kunlai Zhang,Haoran Zhang,Haixin Li,Mengxin Liu,Zhenwu Chen,Hanyu Zhai,Qi Wu,Lei Pan
Isotropic wrinkles guide the crack formation in MXene/PDMS via a “peak pinning” effect. • The maze-like crack network provides high sensitivity (518.7) and a broad linear range (62.2%). • The sensor can monitor a full spectrum of human activities, from subtle pulses to vigorous body movements. • Machine learning enables the sensor to achieve 95.0% accuracy in complex gesture recognition. Simultaneously integrating high sensitivity, a wide linear range, and robust cyclic stability into a single flexible strain sensor remains a critical yet unresolved challenge for wearable electronics. Herein, we report a facile and scalable strategy to fabricate a MXene/PDMS sensor that employs isotropic wrinkle microstructures to guide the formation of a maze-like crack network (MCN). A critical “peak pinning” effect induced by these wrinkles effectively suppresses catastrophic crack propagation while promoting the progressive generation of the MCN, which inherits the meandering characteristics of the wrinkles. By precisely tuning the MXene deposition density (0.5–4 g m −2 ), both the wrinkle and crack geometry as well as the resultant piezoresistive properties can be tailored. Consequently, the optimized sensor achieves an exceptional balance of performance metrics: a high gauge factor of 518.7, a broad linear working range of 62.2%, fast response and recovery times (13 ms and 42 ms, respectively), and robust durability exceeding 1000 cycles. The device demonstrates versatile monitoring capabilities across a full spectrum of human activities, spanning subtle physiological signals (e.g., arterial pulse waves and laryngeal vibrations) to large-amplitude joint movements. Furthermore, when integrated with an XGBoost ensemble machine learning algorithm, the sensor enables a smart sensing system that achieves 95.0% classification accuracy for complex hand gestures. Collectively, this work presents a synergistic approach combining scalable fabrication, engineered microstructures, and artificial intelligence (AI)-enhanced data processing to advance the development of next-generation human-machine interfaces. Download: Download high-res image (164KB) Download: Download full-size image
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POLYMERS FOR ADVANCED TECHNOLOGIES
·
2026
·Vol. 37
·期 7
·e70678
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IF 3.8
Yu Zeng,Lu Tang
Dielectric elastomer has attracted much attention for its promising application in soft robots, actuators, and generators. Nevertheless, fluorosilicone rubber (FSR), as a typical dielectric elastomer matrix, possesses inherently low dielectric permittivity, severely limiting its electromechanical actuation performance. To address this issue, two-dimensional (2D) MXene nanosheets and zero-dimensional (0D) Ag nanoparticles were incorporated into FSR via mechanical mixing and hot-pressing to prepare FSR/MXene/Ag composites. Results show that MXene and Ag were dispersed well in the FSR matrix and the composites were thermally stable up to 390°C. A relatively high dielectric permittivity of 16.63 (2.49 times of pure FSR) was achieved at 10 3 Hz for the composite with 1.2 phr (parts per hundred of rubber) MXene and 3.2 phr Ag, while the loss tangent remained below 0.012. This can be attributed to the synergistic effects of the hybrid fillers where the 0D Ag nanoparticles effectively suppress the agglomeration of 2D MXene nanosheets, while the heterogeneous interfaces between MXene/Ag and FSR significantly enhance interfacial polarization. Furthermore, the FSR/MXene/Ag composites not only show improved tensile strength and elongation at break with decreased elastic modulus, but also exhibit enhanced electromechanical sensitivity, achieving a large electromechanical strain of 16.05% (205% increment of pure FSR) under an electric field of 40 kV mm −1 . This work provides a feasible strategy for designing dielectric elastomers with enhanced electromechanical performances.
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Sustainable Materials and Technologies
·
2026
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IF 9.7
Hong Chen,Wei Ou,Hongchang Huang,Junlan Li,Juncheng Liu
Both the 2D titanium carbide (Ti 3 C 2 T x ) MXene and the 3D rare earth doped zirconium-based metal organic framework (Ln 3+ @UiO-66, MOF) were constructed on the colorless transparent polyimide (CPI) film to form the heterojunction multifunctional nano-coating via a one-pot immersion method in order to improve the UV resistance of CPI. Firstly, the S/CPI film was obtained via the CPI being modified with silica (SiO 2 ) sol, and then the Ti 3 C 2 T x MXene was loaded onto the surface of the S/CPI film via the hydrogen bond, finally the Ln 3+ @UiO-66 was loaded onto the ultra-thin Ti 3 C 2 T x MXene nanosheets to obtain optimal sample (MXene/Ln 3+ @UiO-66-S/CPI). The transmittance of MXene/Ln 3+ @UiO-66-S/CPI is 93.33%, which is only 0.94% lower than that of S/CPI. The tensile strength and elongation of MXene/Ln 3+ @UiO-66-S/CPI are basically the same as those of S/CPI. The attenuation values of transmittance, tensile strength, and elongation for MXene/Ln 3+ @UiO-66-S/CPI film after 5000 equivalent sun hours (ESHs) UV irradiation are 2.44%, 10%, and 18%, respectively, i.e., this film gets both a high transparency and a super ultraviolet resistance. This may be attributed to the fact that the MXene/Ln 3+ @UiO-66 multifunctional nano-coating can absorb the UV light and undergo the down-conversion, weakening the UV irradiation intensity.
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ACS Applied Engineering Materials
·
2026
·
IF 3.5
Nie Yingying,Hu Cewen,Dai Mengnan,Wang Jizeng
Accurate detection of both subtle and large deformations remains a major challenge for hydrogel-based wearable strain sensors. Here, we report a multifunctional phase-separated hydrogel composed of polyacrylamide (PAM), sodium alginate (SA), polyurethane (PU), and MXene nanosheets. The phase-separated microstructure and MXene-mediated conductive pathways synergistically enhance the mechanical performance and strain-responsive electrical behavior of the hydrogel. The optimized formulation exhibits a Young’s modulus of approximately 4.5 kPa and a strain at break of approximately 750%. It also demonstrates strong self-adhesion to various substrates and rapid restoration of electrical conductivity after cutting and recontacting. The resulting strain sensor delivers a stable electrical response over a broad strain range of 1−450%, with an approximately linear response between 30% and 450%, a gauge factor of approximately 1.08, and a response time of 0.4 s. The sensor maintains reproducible sensing performance over 200 loading−unloading cycles and enables the monitoring of both large joint movements and subtle physiological signals, including radial artery pulsation. In vitro assays using L929 fibroblasts and HaCaT keratinocytes indicate acceptable preliminary cytocompatibility. In addition, the synthesized hydrogel exhibits a low hemolysis rate and minimal skin sensitization potential, further supporting its biosafety and potential for direct skin-contact applications. Overall, this study presents an effective strategy for integrating phase-separated microstructures and MXene-based conductive pathways into mechanically robust and biocompatible hydrogels for wearable sensing and human−machine interface applications.
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Journal of Physical Chemistry C
·
2026
·
IF 3.4
Chu Sun,Rui Bi,Chunhui Song,Deyang Zhao,Zhiguo Zhu,Kaixuan Yang,Christophe Len,Hongying Lü,Ting Su
2,5-Diformylfuran (DFF) is an important biomass-derived platform chemical, widely recognized as a key intermediate building block in the synthesis of biodegradable polymers and pharmaceutical compounds. The mild and sustainable nature of photocatalysis has attracted considerable attention for such valorization processes, highlighting the need for in-depth exploration of heterostructure-based photocatalysts to enhance catalytic performance. In this study, we report the fabrication and photocatalytic application of a Nb2CTx MXene/ZnIn2S4 (ZIS) Schottky heterojunction with intimate interfacial contact. This heterostructure significantly enhances the separation efficiency of photogenerated charge carriers while prolonging their lifetime. The observed enhancement is attributed to the synergistic interaction between the n-type ZIS semiconductor and the two-dimensional metallic conductor MXene, which induces favorable band bending in ZIS and facilitates the formation of a Schottky barrier at the MXene–ZIS interface. This barrier effectively inhibits electron backflow, thereby promoting charge carrier separation and enhancing interfacial charge dynamics. Compared to pristine ZIS, the Nb2CTx/ZIS heterojunction catalyst achieves a significantly higher DFF yield under ambient temperature and pressure, without the need for additional oxidants. This finding not only demonstrates a highly efficient route for DFF production under mild conditions but also offers a new design strategy for MXene-based Schottky heterojunctions in biomass valorization via photocatalysis.
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Journal of Materials Chemistry B
·
2026
·
IF 6.2
Naijun Dong,Chuanxiang Wei,Xiaoshi He,Min Li,Bo Tan,Jiajun Fang,Yuesheng Dong,Yaqin Sun,Zhilong Xiu,Yongxin Qin,Xiaoguang Xu
Chronic diabetic wounds are difficult to treat due to persistent hyperglycemia, oxidative stress, and bacterial infections. Antibiotic therapy is prone to drug resistance, and likewise, photothermal therapy suffers from the risk of thermal injury to surrounding healthy tissues. This study developed a polyacrylic acid (PAA)-based eutectogel (EG) loaded with baicalein (BAI) and MXene nanosheets (BAI–MXene/PAA EG), which integrates multiple functions including anti-inflammatory, antioxidant, antimicrobial and pro-angiogenic properties. MXene generated a low-temperature photothermal effect at ca. 45 °C under near-infrared (NIR) irradiation. The incorporation of baicalein further improved the antibacterial and anti-inflammatory properties of the eutectogel with desired biosafety and biocompatibility. BAI–MXene/PAA EG exhibited excellent antibacterial performance against multidrug-resistant (MDR) E. coli and MDR S. aureus, with bacterial survival rates as low as 0.03% and 0.22%, respectively. In addition, BAI–MXene/PAA EG promoted the proliferation of HUVECs and HaCaT cells and effectively scavenged intracellular ROS. In vivo studies confirmed that BAI–MXene/PAA EG promoted cell proliferation and induced angiogenesis. By combining nanomaterials with active components from traditional Chinese medicine, this research provides new insights into the future development of wound dressings and holds great potential in the clinical treatment of diabetic infected wounds.
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PubMed
高影响因子
PROGRESS IN ORGANIC COATINGS
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2026
·
IF 7.9
Rui Tian,Yuzhen Zhao,Jian Xu,Jiayi Gua,Xintong Jiang,Fangmin Wang,Zhiqiang Shan,Xiaohua Jia,Haojie Song
To address the bottlenecks of conventional epoxy (EP) resin coatings, which arise from their reliance on toxic amine-based curing agents and high friction coefficients, this study develops green, self-lubricating EP-based coatings (named RLC@M-EP) based on the multiple active-site crosslinking mechanism of regenerated lignocellulose (RLC) and the lubrication enhancement of MXene. RLC is prepared from poplar powder using a deep eutectic solvent (DES), which provides abundant active hydroxyl groups that fully replace amine curing agents, crosslink with EP, and form a three-dimensional network. A series of RLC@M-EP coatings is fabricated by drop-casting while different mass fractions of MXene are introduced to enhance lubrication via interlayer shear and transfer film formation. The abundant active sites of RLC ensure efficient crosslinking with EP matrix, while MXene nanosheets delaminate and spread during friction to form a stable transfer film. Benefiting from the synergy between MXene's lubrication and the robust RLC-EP network strengthening effects, the RLC@M-EP coating achieves a minimum friction coefficient of 0.15 and significantly reduced wear. This work provides a new strategy for developing high-performance, eco-friendly, bio-based self-lubricating EP coatings by integrating chemical crosslinking with physical lubrication.
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ADVANCED MATERIALS
·
2026
·
IF 29.1
Haoyu Cheng,Xiaotong Fu,Zewan Lin,Liang Zhou,Dongdong Ye
The long-standing disconnection between enrichment and identification processes fundamentally limits the reliable tracing of microplastics (MPs) in complex aqueous and biological environments. Inspired by the synergistic structure–function design of bee leg villi, we report a bioinspired hierarchical fiber composed of tunicate nanocellulose (TNC) and PDDA-modified positively charged MXene (P-MXene) that seamlessly integrates active capture with molecular identification. Through microfluidic spinning combined with interfacial electrostatic engineering, the hierarchical fiber is endowed with a biomimetic wrinkled topology and a rationally designed positively charged architecture, enabling spontaneous sequestration of negatively charged MPs with an ultrahigh adsorption capacity of 978.9 mg/g, a 9-fold enhancement over pristine fibers. Concurrently, the MXene-functionalized surface serves as an efficient surface-enhanced Raman scattering substrate, delivering an enhancement factor of 1.2 × 10 5 and enabling a 128-fold improvement in detection sensitivity. Benefiting from this integrated trap-and-sense mechanism, the platform effectively suppresses interference from complex biological matrices and enables trace-level detection of MPs accumulation in plant tissues, such as bean sprouts, revealing preferential retention in the root systems. This work establishes a versatile biomimetic hierarchical fiber-based material platform for detecting trace-level contaminants in realistic biological systems and beyond.
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Energy Technology
·
2026
·Vol. 14
·期 7
·e70586
·
IF 3.6
Zheyuan Zhang,Yifan Zu,Yubo Sun,Wuxu Tian,Jiawei Wang,Jialu Gao,Jifen Wang,Wenjing Wang,Yan Zhang
With the rapid development of wearable electronics, self-powered devices have overcome the limitations of traditional power sources and attracted widespread attention in recent years. We employed a scalable electrospinning fabrication technique to construct an all-fiber polyvinylidene fluoride (PVDF)/MXene triboelectric nanogenerator. MXene flakes, a highly electronegative conductive material, were incorporated into PVDF nanofibers as the triboelectric negative material. The study innovatively investigated the photothermal properties of the PVDF/MXene nanofiber membrane (PVM), along with its stability and output performance under photothermal conditions. The assembled single-electrode all-fiber triboelectric nanogenerator exhibited excellent durability, stability, and electrical output performance. Under simulated solar irradiation, the membrane surface temperature reached 64.5 °C. After 24 h of continuous solar irradiation, the device retained an output voltage of 6.45 V under a 1 Hz friction frequency. This device can function as a self-powered sensor integrated with machine learning to monitor human motion, offering broad application prospects in healthcare smart wearable products.
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