ACS Applied Engineering Materials
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2026
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IF 3.5
Haoxuan Zhou,Keke Xu,Ke Wu,Zeqi Gong,Xiankai Li
Abstract Hair fibers with α-keratin biopolymers are responsive to water owing to the reversible disruption and formation of hydrogen bonds, which can be constructed as a hygrometer. However, the functionality is insufficient in smart sensors and energy harvesting because of their intrinsic insulation. Herein, electrically conductive hair fibers are produced by the layer-by-layer assembly method through forming MXene sheaths. Bovine serum albumin (BSA) with a positive charge is assembled firstly onto the hair fibers, and MXene nanosheets are adsorbed on the surface of the hair through electrostatic interactions. Due to the superior electrical conductivity of MXene and water responsivity of hair, hair fibers can be used in electric devices with enhanced mechanical properties and humidity sensitivity. The resultant fibers can be used as smart strain sensors with a high response speed (600 ms). More importantly, electric energy with a maximum output voltage of 97 mV can be achieved under water evaporation based on the transpiration-driven electrokinetic effect. Thus, this study not only extends fundamental knowledge about electrically conductive fiber but also develops an intriguing method to develop multifunctional hair fibers applicable in degradable wearable sensors and energy harvesting.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
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2026
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IF 12.5
Ming Yan Ren,Jie Zhang
Introduced MXene quantum dots (MQDs) as ion-selective fillers to PVA hydrogel created ion transport asymmetry through selective ion interactions. • MQDs–PVA mechanoionic generator achieved 5.5 mA current, 0.81 V voltage, and 0.937 W m −2 power density, well balanced and stable electrical performances. • A 4 × 4 self-powered pressure-sensing array integrated with temporal convolutional network enabled 96.68% handwriting recognition accuracy. Mechanoionic generators based on ionically conductive hydrogels have emerged as promising candidates for self-powered sensing applications, but with limited electrical performances due to insufficient ion-transport asymmetry. Herein, MXene quantum dots (MQDs) as ion-selective nanofillers are introduced into poly(vinyl alcohol) (PVA) hydrogel to regulate ion transport for mechanoionic performance enhancement. Owing to the hydrothermally prepared MQDs with abundant oxygen-containing functional groups, the nanoscaled particles are interacting with selected ions and tailoring steric hindrance to diffusion. The Density Functional Theory (DFT) studies reveal that the MQDs exhibit strong adsorption toward Li + but repulsive to Cl − , thereby amplifying the intrinsic diffusion difference between cations and anions under compressive strain. As the result, the MQDs-PVA mechanoionic generator offers short-circuit current of 5.5 mA, open-circuit voltage of 0.81 V, and maximum power density of 0.937 W m −2 , outperforming the MXene-based counterpart and the most reported piezoionic systems in literature. Furthermore, a 4 × 4 self-powered pressure-sensing array is constructed and integrated with a temporal convolutional network (TCN), which enables handwriting authentication at minimum sample rate. This study has paved the ways to build high performance mechanoionic generators for practical applications.
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CHEMICAL ENGINEERING JOURNAL
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2026
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IF 12.5
Nuo Fu,Huichao Wang,Jingwen Zhang,Yong Yang,Bin Shang,Ziwei Deng
Bioinspired self-healing MXene-based photothermal superhydrophobic coating is fabricated via spray coating. • This coating achieves surface superhydrophobicity, photothermal conversion, self-healing, and photothermal sterilization. • This coating is developed for high-efficiency anti-icing, de-icing, and sterilization applications Ice accumulation in low-temperature environments not only results in significant economic losses but also poses a serious threat to industrial operations and public safety. Although photothermal superhydrophobic coatings have emerged as the effective and promising candidates for anti-icing and de-icing applications, their insufficient mechanical robustness and pronounced performance degradation under realistic icing conditions pose major challenges to their long-term viability and practical implementation. Here, we report a bioinspired self-healing MXene-based photothermal superhydrophobic coating (denoted as EVA@PAgDMX coating), which simultaneously exhibits exceptional surface superhydrophobicity, efficient photothermal conversion, durable self-healing capability, and effective photothermal sterilization. The design and fabrication of this multifunctional EVA@PAgDMX coating involve spray-coating a homogeneous suspension composed of superhydrophobic Ti₃C₂Tₓ MXene nanosheets and poly (ethylene- co -vinyl acetate) (EVA) dissolved in ethyl acetate. Specifically, the multifunctional EVA@PAgDMX coating simultaneously achieves both exceptional passive anti-icing and highly efficient active de-icing, achieved through the synergistic integration of superhydrophobicity and exceptional photothermal conversion capability. Moreover, this coating demonstrates exceptional photothermal sterilization performance, primarily attributable to its high photothermal conversion efficiency. Its intrinsic superhydrophobicity further contributes to antibacterial protection by minimizing bacterial adhesion and facilitating self-cleaning, thereby working complementarily with the photothermal effect. Collectively, this work establishes a rational design strategy and a practical fabrication pathway for a high-performance self-healing MXene-based photothermal superhydrophobic coating, holding significant promise for advanced applications in photothermal anti-icing/de-icing, as well as surface disinfection. Download: Download high-res image (182KB) Download: Download full-size image
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JOURNAL OF MEMBRANE SCIENCE
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2026
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IF 8.8
Yufei Wang,Borui Hou,Wenbo Li,Zaichao Guo,Jingyi Ma,Yingying Wang,Shuming Li,Wufeng Wu,Zenan Shi,Zong Lu,Li Ding,Huijun Yao,Sheng Dai,Yanying Wei,Haihui Wang
Heavy ion irradiation introduces straight-through channels in MXene membranes. • ∼3 Å pores with narrow size distribution are generated by Fe ion irradiation. • Heavy ion irradiation can penetrate through micron-thick MXene membranes. • Fe ion irradiation enhances H 2 permeance and H 2 /CO 2 selectivity. Two-dimensional (2D) nanosheets are promising for fabricating H 2 sieving membranes due to their atomic-scale thickness, but the tortuous pathways formed by nanosheet stacking limit efficient gas transport. Introducing artificial in-plane pores on 2D nanosheets offers a solution, yet existing methods suffer from broad size distribution with large pore size and shallow pore-forming depth through membranes. Here, we propose a kind of straight-through angstrom-scale channelled MXene nanosheet membranes for H 2 sieving engineered by a heavy ion irradiation strategy. A key advantage of the pore-forming strategy is that selecting specific heavy ion species and energy enables precise control of energy loss, directly guaranteeing ultra-uniform pore size at the angstrom scale. After Fe ion irradiation, the obtained pores penetrating through micron-thick membranes exhibit size of ∼3 Å with narrow distribution (proportion of 87%), high pore density (>10 13 cm −2 ) and uniform distribution simultaneously. The optimal membranes exhibit an H 2 permeance of 1898 GPU, a sixfold increase over the pristine membrane assembled with nonporous MXene nanosheets, while retaining a high H 2 /CO 2 selectivity of ∼91, outperforming most current membranes. This work provides a scalable strategy for pore-engineering of 2D nanosheet membranes, and establishes a robust platform for gas separation, catalysis, and environmental applications. Download: Download high-res image (331KB) Download: Download full-size image
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CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Bingxue Huang,Shu Wu,Junjing Liu,Jie Liu,Biyou Peng,Zehang Zhou
MXenes have emerged as a highly promising material for next-generation patterned flexible sensing devices owing to their exceptional electrical conductivity, biosafety, and processability. In this study, we present a facile polyelectrolyte-assisted aerosol jet printing (AJP) strategy for fabricating MXene-based flexible sensors with largely improved printing quality for the applications in humidity and temperature sensing. By leveraging the electrostatic interactions network between sodium alginate (SA)-modified MXene ink and a chitosan (CS) substrate, the sensor achieves densely and stably packed MXene nanosheets with minimized defects. The intercalated SA molecules not only improve printing quality of AJP, but also enhance the humidity and temperature sensitivity of the MXene/SA patterns by modulating the interlayer spacing and functional groups within MXene layers. The resulting MXene/SA@CS sensor achieves a temperature coefficient of resistance (TCR) of 1.08% °C −1 (30–110 °C) and exhibits real-time responses to humidity changes from human motions with the largest 356 ± 9% resistance response rate and the shortest rapid response/recovery times (0.30 s/2.00 s). Its excellent antimicrobial properties and biocompatibility highlight the potential for wearable health monitoring and human-machine interfaces. Finally, the AJP-printed MXene sensors with programmable structures were successfully applied as a noncontact controller via finger movement detection.
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ACS Applied Materials & Interfaces
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2025
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IF 8.2
Xu Zhang,Yuanhao Gong,Fei Xie,Ping Sun,Saihua Jiang
Dual-mode sensors capable of detecting multiple physical stimuli simultaneously offer significant advantages for advanced applications in human–machine interaction, robotics, and healthcare. However, the flammability of conventional materials limits their widespread adoption. The recently developed two-dimensional transition metal carbide (MXene) combines exceptional thermoelectric properties, metallic-like conductivity, and flame retardancy, making it a promising solution to these limitations. In this study, we present multifunctional sensors designed to accurately detect temperature and pressure stimuli by integrating MXene sheets onto flexible, fire-resistant polyimide (PI) substrates. These sensors demonstrate excellent performance in both temperature and pressure sensing, making them ideal for smart firefighting suits, which can monitor firefighters’ health in real time. Moreover, when integrated with deep-learning algorithms, the sensors, assembled into smart gloves, can recognize objects of varying weights and temperatures. This work provides a simple and effective method for preparing multifunctional wearable sensors capable of distinguishing multiple stimuli across diverse environments.
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PubMed
高影响因子
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
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2025
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IF 14.3
Xinyue Liu,Zhongguo Zhao,Xin Xie,Kaiyuan Wang,Wenhu Li,Chouxuan Wang,Rong Xue,Lei Wang
Polymer-based thermal conductive composites (PTCs) are crucial for managing heat in microelectronics, yet the impact of filler–filler interfacial thermal resistance (ITR) on their thermal performance remains unclear despite efforts to optimize the filler–matrix interfaces. In this study, the creation of continuous thermal conductive networks with enhanced filler–filler interface contact was achieved in bacterial cellulose/boron nitride nanosheets/MXene composites (BC/BNNS/MXene) by the in-situ coating of silver nanoparticles on the surface of boron nitride nanosheets (Ag@BNNS). The homogeneously dispersed and well-exfoliated BNNS are bridged to each other via the Ag located at the surface of BNNS and a 3D thermal conductive network is formed with solid Ag junctions lying in among. The resulting 3D “branch-leaf” structure significantly enhances thermal conductivity to 18.5 W m −1 K −1 at 30 wt% Ag@BNNS filler loading, and was demonstrated by first-principles simulations, proving that the merged Ag was used as a thermal transport joint to reduce thermal contact resistance within the 3D BNNS and MXene network. Utilizing the MBAg30 composite film as a thermal interface material has been shown to effectively lower the operating temperature of smartphones, reducing it from 33.4°C to 29.0°C. The film also demonstrates efficient photothermal conversion, with a surface temperature of 83.6°C under 100 mW cm −2 light intensity and a photothermal conversion efficiency of 96.3 %. It demonstrates good stability after seven cycles and can increase ice melting rates in practical applications like agricultural greenhouses and solar heating. The present strategy provides an effective route for developing high-performance PTCs.
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Journal of Magnesium and Alloys
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2025
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IF 13.8
Shixuan He,Dongdong Li,Xingqing Duan,Jinting Chen,Bogu Liu,Yawei Li,Haixiang Huang,Haoyuan Zheng,XinHua Wang,Ying Wu
Catalysis is an effective means to improve the slow kinetics of hydrogen absorption and desorption, as well as the poor cycle life of the 2LiBH 4 +MgH 2 composite system. In this study, The TiVC MXene was obtained by etching TiVAlC and introduced into 2LiH + MgB 2 by ball milling. Products obtained were heated and hydrogenated to prepare the 2LiBH 4 + MgH 2 (LMBH) system, which exhibits distinguished kinetic performance and capacity retention rate. In the LMBH + 6 wt% TiVC, a 9.3 wt% hydrogen is released within 35 min at 400 °C as well as hydrogenation is completed within 30 min at 350 °C, 9 MPa. Moreover, the capacity retention rate was up to 96 % after the 15 th cycle. During the heating and hydrogenation process, the TiH and V 8 C 7 are generated in-situ as active products, and stably exist in the subsequent process to catalyze the hydrogen absorption-desorption reactions of the composite. The presence of TiH/LiH/V 8 C 7 /MgB 2 interface improves the kinetic performance of the system. Reversibility is improved by inhibiting the generation of polyborane and the aggregation during the hydrogen absorption-desorption process. The interface structure-activity relationship is first elucidated that between bimetallic MXene and 2LiBH 4 + MgH 2 composite system during hydrogen absorption-desorption processes, providing a novel viewpoint and optimization path for the modification research of 2LiBH 4 + MgH 2 composites.
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LANGMUIR
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2024
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IF 3.7
Tianran Wang,Chushu Zhu,Peitao Dong
Surface-enhanced Raman scattering (SERS) is a novel spectroscopic technique that enables the identification of analytes through analysis of their unique chemical signatures. Its high sensitivity, specificity, and rapid response make it a valuable tool in a range of fields, including biological detection, food safety, and environmental monitoring. However, traditional SERS nanoparticle substrates are susceptible to instability and agglomeration. In this study, Ta4C3 MXene/gold nanostar (AuNSs) hybrids were prepared as SERS substrates. By optimizing the experimental conditions of AuNSs, the optimal preparation method for the Ta4C3 MXene/AuNSs composite structure was identified. The addition of MXene to the Ta4C3 MXene/AuNSs hybrid substrates was found to enhance the sensitivity of the composite for Raman detection, as evaluated using 4-aminothiophenol (PATP) as a Raman molecule. This improvement in sensitivity is attributed to the enhanced electromagnetic properties of the hybrid substrates, which facilitate more efficient charge transfer and enhance the Raman scattering process. The limit of detection (LOD) of Ta4C3 MXene/AuNSs is 10–9 M for PATP and 10–7 M for thiram solutions. In addition, good reproducibility and spatial uniformity were obtained for the Raman signals of Ta4C3 MXene/AuNSs. Furthermore, Ta4C3 MXene/AuNSs were combined with filter paper to create paper-based SERS substrates that could be used for detection. By directly wiping the apple peel and subsequently detecting the thiram residues using Ta4C3 MXene/AuNSs, the level of detection of thiram residues on the peel surface was down to 7.8 ng/cm2.
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POLYMER
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2025
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IF 4.5
Shihang Dong,Shuohan Huang,Yuan Liang,Lingzhe Chen,Ying Wang,Yuhan Chen,Ke Ma,Xueqin Ju,Guanglei Xiang,Hai Wan,Wenbin Jin,Yanping Wang,Yong He,Peng Wei,Yumin Xia
MXenes, an emerging class of two-dimensional transition metal carbides and nitrides, have garnered significant attention due to their exceptional electrical, thermal, and mechanical properties. However, achieving uniform dispersion of hydrophilic MXene nanosheets within a hydrophobic thermotropic liquid crystal polyester (TLCP) matrix presents a formidable challenge that limits their practical applications. In this study, we address this challenge through a direct surface modification approach to enhance the interfacial interaction between MXene and TLCP. The effects of modified MXene on TLCP performance were investigated through comprehensive material characterization. X-ray photoelectron spectroscopy (XPS) and X-ray diffraction (XRD) analyses reveal that 6-aminohexanoic acid effectively mediates the interfacial interaction between MXene and TLCP molecules, preventing the aggregation of MXene nanosheets and facilitating their uniform dispersion throughout the TLCP matrix. The incorporation of modified MXene (Am-MXene) significantly enhances the thermal stability of the resulting nanocomposites, with the Am-50%MXene/TLCP demonstrating a 27°C increase in the 5% weight loss temperature compared to pristine TLCP. The nanocomposite achieves a notable electrical conductivity of 5.99 S/m while preserving the TLCP's intrinsic microstructure. Moreover, MXene incorporation enhances the orderliness and alignment of liquid crystal textures. The nanocomposite exhibits substantial improvements in thermal diffusivity (67%), thermal conductivity (25%), dielectric constant (318%), and photothermal conversion temperature (84%). These findings advance our understanding of designing multifunctional composite materials with enhanced performance characteristics.
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SEPARATION AND PURIFICATION TECHNOLOGY
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2025
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IF 9
Yuchun Ren,Dandan Zhao,Fei Zhou,Zhengjun Gong,Dongmei Wang,Yingwei Xi,Zhenglian Wu,Li Yang,Yongsheng Fu,Chen Fu
Lithium is a critical strategic resource in the transition to clean energy, and developing efficient, sustainable recycling technologies is essential to achieving carbon neutrality goals. The study addresses challenges such as low lithium-ion concentrations and the presence of competing cations in shale gas produced water (SGPW). An innovative composite adsorbent enhanced by a hydrogen bond network, consisting of H 1.33 Mn 1.67 O 4 (HMO), MXene, and chitosan (CTS), is introduced. Directional bonding among MXene, CTS, and HMO forms an interpenetrating structure that stabilizes the HMO lattice, with only 0.005 % Mn loss after ten cycles. Adsorption tests with actual SGPW demonstrated that the material adsorbs lithium-ion capacity at 11.80 mg/g, exhibiting higher lithium selectivity compared to other cations. A laboratory-scale experiment was conducted using a fixed-bed filtration system, the most effective adsorbent reached saturation close to 52 h under a near approach velocity of 0.13 cm/min (hydraulic loading) with a full bed volume of 7.7 cm 3 , containing around 4.92 g of adsorbent. A novel material design paradigm for lithium extraction from neutral to alkaline wastewater is presented, combining high selectivity with long cycle life.
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ACS Applied Electronic Materials
·
2026
·
IF 4.7
Xiaoling Yang,Xiaofang Wang,Yuhao Hu,Huimin Xiang,Congyan Xia,Xiaoling Liao,Yuanyuan Zhang,Maolan Zhang,Ming Zhou
Polyacrylamide (PAM) hydrogels are promising candidates for flexible wearable sensors but suffer from limitations including toxic cross-linkers(N,N′-methylenebis(acrylamide), BIS), prolonged gelation times, high-temperature requirements, and inadequate mechanical properties. Herein, a quadruple-functional MXene was employed to fabricate high-performance PAM hydrogels within 5 min at ambient temperature. MXenes served simultaneously as an initiating accelerator (replacing toxic BIS), physical cross-linker, conductive agent, and reinforcing nanofiller. Reductive MXene nanosheets catalyzed ultrafast polymerization of acrylamide monomers via redox reactions with ammonium persulfate(APS), facilitating a green, low-energy fabrication process and preventing MXene nanosheets reaggregation within the hydrogel network. By adjusting the MXene content, the optimized hydrogel (6 mg/mL MXene) demonstrated exceptional mechanical performance, with 1558% elongation at break and 119 kPa tensile strength, exceeding traditional BIS/PAM hydrogels (1081% elongation, 74 kPa strength). This enhancement is attributed to the uniform honeycomb-like porous structure and dual-network architecture comprising covalent PAM backbone and physical hydrogen-bonded MXene cross-links. Additionally, the MXene incorporation confers electrical conductivity (0.3 S/m) and photothermal performance, with temperature increase up to 21.8 °C under near-infrared (NIR) irradiation and good photothermal stability. As a strain sensor, the hydrogel exhibits two-stage sensing response with gauge factor (GF) of 1.1 (0–235%) and 2.4 (235–400%), rapid response time (35 ms), recovery time (98 ms), and excellent cyclic stability. In L929 cytotoxicity assays, MXene/PAM hydrogels demonstrate improved biocompatibility compared to BIS/PAM hydrogels. The sensor accurately monitors both large human movements (finger, wrist, bending, handwriting) and subtle physiological activities (pulse and throat vibrations). This study introduces a rapid, eco-friendly method for fabricating multifunctional PAM hydrogels with enhanced mechanical, conductive, photothermal, and biocompatible properties for flexible electronic skin and biomedical devices.
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