CHEMICAL ENGINEERING JOURNAL
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2026
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IF 12.5
Runfeng Zhang,Yan Zhang,Hai Yu,Zongmao Lv,Jie Liu,Xiaogang Luo,Xuejing Zheng,Keyong Tang
A rationally designed MWCNT-COO-MXene/PNIPAM-PAM bilayer hydrogel actuator. • Covalent heterostructure enables rapid photothermal actuation and self-sensing. • Excellent mechanical strength and reversible biomimetic shape-morphing. • An integrated device couples NIR-driven motion with real-time resistance feedback. Stimulus-responsive hydrogels hold great potential in soft robotics, yet conventional PNIPAM hydrogels are limited by slow response speed, single functionality, and poor mechanical strength. Introducing photothermal fillers such as MXene and carbon nanotubes (CNTs) is an effective strategy to enhance their performance. However, conventional physical blending results in weak interfacial interactions, filler aggregation and limited performance enhancement. Here, we address this challenge by constructing a covalent MWCNTs-COOH@MXene heterostructure via EDC/NHS-mediated esterification, which serves as an efficient conductive and thermal network within the PNIPAM matrix and is firmly integrated with the polyacrylamide (PAM) passive layer through interfacial interpenetration. Compared with the physically blended counterpart, the covalently bonded hydrogel exhibits significantly enhanced thermal conductivity (1.49 W/(m·K)) and higher photothermal conversion efficiency (45.03%). The bilayer actuator exhibited rapid and reversible bending with a response time of 10 s, reaching a maximum bending angle of 420° under thermal stimulation and 80° under NIR light. The actuation amplitude could be controlled by adjusting the thickness ratio of the layers, temperature, and light parameters. Leveraging the efficient photothermal conversion and internal heat conduction of the MWCNTs-COOH@MXene heterostructure, the hydrogel achieved fast light-driven deformation and enabled biomimetic applications such as flower-like opening/closing, target grasping, and autonomous swimming. By integrating actuation and sensing functions, an NIR-light-controlled switch was realized that performed photomechanical actions while providing real-time state feedback through resistance monitoring. This work provides a new material platform and design strategy for high-performance soft robots and intelligent actuators with integrated functionalities. Download: Download high-res image (420KB) Download: Download full-size image
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高影响因子
Journal of Materials Chemistry A
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2026
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IF 9.2
Haixiang Shi,Jianming Xu,Liuyun Chen,Tongming Su,Xinling Xie,Xuan Luo,Zu-Zeng Qin,Hongbing Ji
The efficiently selective hydrogenation of carbonyls in unsaturated aldehydes by nonnoble metal catalysts is still a severe challenge. Herein, an Co nanocluster catalyst anchored on vacancy-rich Ti3C2Ox (TCOs) was designed and prepared by a simple chemical reduction method for selective hydrogenation of cinnamaldehyde to cinnamyl alcohol. The Co/TCOs-H2 catalyst showed a superior catalytic activity with a TOF of 23.6 h-1, and reached a cinnamaldehyde conversion of 96.7% and a cinnamyl alcohol selectivity of 65.5% at low cobalt loading. Further, the characterizations demonstrated that Co nanoclusters were successfully anchored on TCOs, where the exist of surface oxygen vacancies (VOs) promote their vertical adsorption properties for cinnamaldehyde. Importantly, density functional theory calculation revealed that VOs enhanced selective adsorption of C=O on Co nanocluster by modifying the outside charge density of Co atoms, resulting an increase of the adsorption energy difference for conjugated double bonds and a lower energy barrier for H2 dissociation on Co nanocluster sites. This work develops a feasible strategy for constructing highly active metal nanocluster sites on two-dimensional MXenes and provides insight into the role of VOs on MXene in metal nanocluster during hydrogenation reactions.
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高影响因子
Nano Materials Science
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2026
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IF 20.5
Tian Li,Li Ma,Tanlin Chen,Tian Yang,Renchi Qin,Yao Zou,Aming Xie,Fanbin Meng
Achieving simultaneous electromagnetic wave attenuation and long-term corrosion resistance remains a major challenge for MXene-based absorbers, owing to their intrinsic susceptibility to harsh environments and impedance mismatch. In this work, we demonstrate a 2D/2D stacked Ti 3 C 2 T x MXene/ZnCo–MoO 4 layered double hydroxide (LDH) heterostructure, prepared through electrostatic self-assembly followed by ion-exchange modification. The interlocked nanosheet architecture promotes enhanced interfacial polarization and optimized impedance matching, leading to a strong reflection loss of −46.9 dB and a broad effective absorption bandwidth of 5.7 GHz at a thickness of only 2.1 mm. Meanwhile, the LDH component provides dual functionality as a physical barrier and an ion reservoir, enabling sustained release of Zn 2+ and MoO 4 2− species to suppress corrosion processes. The optimized coating exhibits an impedance modulus up to 9.31 × 10 8 Ω cm 2 and a protection efficiency of 99.97% after 21 days of salt-spray exposure. Electromagnetic simulations and arched-frame experiments further validate the stability of the composite under operational conditions. This multifunctional strategy bridges the gap between high-efficiency microwave absorption and environmental durability, offering practical prospects for aerospace, marine, and defense applications.
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POLYMER
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2026
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IF 5.1
Xiaojie Jiang,Binzhe Tan,Dongya Guo,Jun Zheng,Yiduan Lou,Yu Lin
Two-dimensional MXene materials have exhibited considerable promise for electromagnetic interference (EMI) shielding due to their excellent electrical conductivity. However, achieving excellent mechanical properties and high EMI shielding effectiveness (SE) simultaneously in such composite materials with the lowest content of MXene remains a continuing challenge. Herein, delignified wood (DW) aerogel with porous structure was obtained by the sodium chlorite method, and the ternary composite film of polyimide (PI)/MXene/DW was fabricated by sequential vacuum impregnation of MXene and polyamide acid solution, followed by hot pressing and thermal imidization. The introduction of PI significantly improves the mechanical properties of the composite film, exhibiting the tensile strength and modulus of 88.97 MPa and 2.93 GPa, respectively. The composite film exhibits the EMI SE of 15.2 dB in the X-band range with the MXene content of only 7 wt% and the thickness of 0.3 mm, corresponding to a high SE/ t of 50.7 dB/mm. Moreover, the composite film shows stable EMI shielding performance even after exposing in a variety of harsh environments and good flame retardancy properties. Therefore, the resulting composite film exhibits excellent EMI shielding and flame retardancy performance, which provides the potential applications in aerospace and related fields.
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高影响因子
ACS Applied Electronic Materials
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2026
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IF 4.7
Haofeng Ouyang,Zeyu Zheng,Yujun Wu,Yile Ye,Kuan Deng,Pengli Zhu,Kexin Fu,Yan-Jun Wan,Si-Yuan Liao
Abstract The rapid development of high-frequency electronic devices urgently requires electromagnetic interference (EMI) shielding materials with both high shielding effectiveness (SE) and low reflectivity. However, achieving simultaneous high shielding and low reflectivity remains a significant challenge due to the inherent impedance mismatch. Herein, an asymmetric MXene/Flaky FeSiAl (FFSA)/expandable polymer microsphere (EPM) composite foam integrating metal soft magnetic material was constructed. Due to the particularly high permeability and low loss of FFSA, it can serve as an impedance-matching layer, allowing electromagnetic waves to enter the material with minimal surface reflection. Consequently, the composite foam delivers an EMI SE of 34.6 dB and a reflection coefficient as low as 0.03, maintaining broadband shielding above 31.9 dB across 5–27 GHz. Furthermore, the foam exhibits a near-field SE of approximately –40 dB in the 1–6 GHz band and effectively blocks wireless power transmission. This study provides a feasible strategy for developing low-reflection EMI shielding materials.
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高影响因子
Materials Today Electronics
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2025
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IF 7.4
Fei Wang,Fuying Liang,Qi Chen,Jingcheng Huang,Xi Wang,Wei Cheng,Jizhai Cui,Fan Xu,Yongfeng Mei,Xiaojun Wu,Enming Song
Myocardial infarction (MI), a leading cause of death worldwide, triggers cardiomyocyte death and scar tissue formation, disrupting electrical conduction and impairing cardiac function, which may ultimately progress to heart failure. In this study, we develop a high-conductivity and high-toughness hydrogel cardiac patch by incorporating MXene nanosheets into a PVA/PAM hydrogel. This cardiac patch shows superior mechanical properties, with a tensile strength of 190 kPa and elongation over 1250%, while MXene enhances the electrical conductivity of hydrogel, benefiting the restoration of conduction in infarcted areas. Additionally, strong adhesion to muscle and skin tissues has been proved, with the maximum adhesion strength reaching 15 kPa. Biocompatibility tests also reveal high cell viability. These findings provide additional options for cardiac functional repair and MI treatment.
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ACS Applied Materials & Interfaces
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2025
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IF 8.2
Aobo Ren,Yufei Yong,Lianghao Jia,Tao Xiang,Shaobing Zhou
Conductive hydrogels have been widely used in bioelectronics due to their excellent flexibility, electrical conductivity, and biocompatibility. However, the water in hydrogels is prone to freezing at low temperatures, decreasing flexibility and sensing performance. In this work, a dual-network eutectogel composed of poly(vinyl alcohol) and poly(acrylic acid) is prepared by using deep eutectic solvent (DES) and MXene as the antifreezing medium and conductive component, respectively. The molecular dynamics simulations analyze the interaction of DES and H2O in the networks to verify the effect of DES in eutectogel. Then the ratio of DES and H2O in the networks is optimized by the mechanical properties, water loss resistance, and antifreezing properties. The eutectogel has good tensile properties (a strain of 570%), reliable repeatability, and excellent antifreezing performance (it can work at −80 °C). The introduction of MXene effectively enhances the sensitivity of the eutectogel sensor to 12.25, which is 6.5 times higher than that without MXene. The eutectogel-based strain sensor allows motion monitoring and encrypted information transmission at −30 °C. Combining the sensor with a soft gripper can also enable object grasping and size recognition. The eutectogel holds promise for the application of flexible sensors in extreme environments.
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PubMed
高影响因子
ACS Nano
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2025
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IF 16
Shanshan Liu,Nanlin Hu,Jiawang Hu,Wenting Li,Shikai Wu,Xiaoyan Ma,Yi-Xin Huo,Yuan Lu
Noninvasive odor sensing is important in environmental monitoring and medical diagnosis. The two-dimensional material MXene is widely used due to its unique sensing properties but has limitations in specifically recognizing a certain gas. This study developed a bioinspired biosensor array (BBA) whose core mechanism involved programming MXene sensing interfaces through DNA base sequences to mimic molecular recognition principles of biological olfactory receptors. Integrated with machine learning algorithms, the BBA achieved preliminary identification of cancer patients by detecting exhaled gas samples from different populations. Starting from DNA molecular length, base type, and chemical modification, different DNAs were prepared and screened by orthogonal experiments to obtain five DNA/MXene composite biosensing materials with excellent sensing properties. Combined with pure MXene, a Six-channel bioinspired biosensor Array(6C-BBA) was established, and a neural network algorithm was utilized for the preliminary validation of the real odor molecules of fruits. Finally, the high-performance 6C-BBA was used to detect breath samples from stomach cancer patients, lung cancer patients, intestinal cancer patients, and healthy people, and the array showed 86.3, 94.1, 89.5, and 86.3% accuracy. This study could offer a specific method for advanced biosensor development and reveal important applications in early noninvasive recognition of diseases.
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高影响因子
JOURNAL OF MATERIALS SCIENCE
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2025
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IF 3.9
Wang Lei,Jia Bingzhe,Yang Huailin,Qiang Xinrui,Li Jiarui,Liu Yichi,Li Zhiqiang,Wang Jialei,Wu Xinming
The development of hybrid supercapacitors has accelerated to meet the demand for fast-charging and discharging energy storage technologies in automotive and other energy storage applications. These supercapacitors combine the fast-charging benefits of capacitors with the high-energy density of batteries. To achieve this, it is essential to develop electrode materials with excellent electrochemical activity and rapid ion diffusion capabilities. This paper employs metal–organic framework (MOF) and MXene composites to address these challenges. Specifically, a one-dimensional linear nickel metal–organic framework (Ni-MOF) is grown in situ between MXene layers. The structure and morphology of the Ni-MOF were analyzed using X-ray diffraction, transmission electron microscopy (TEM), and scanning electron microscopy (SEM).The abundant Faradaic active sites and the enhanced kinetics from the synergy between the one-dimensional hollow structure and the two-dimensional layered structure resulted in a specific capacitance of 960 F g −1 for the Ni-MOF/MXene composite at a current density of 0.5 A g −1 . A Ni-MOF/MXene//AC device with an operating voltage of 1.6 V was also fabricated, exhibiting a notable energy density of 26.1 Wh kg −1 and power density of 8000 W kg −1 . The device maintained 92.4% of its specific capacity after 5000 cycles, demonstrating excellent electrochemical performance. This study not only showcases the significant potential of Ni-MOF/MXene composites in electrochemical energy storage but also lays a theoretical foundation for the development of high-efficiency supercapacitors. Graphical abstract This study utilizes metal-organic framework (MOF) and MXene composites to address energy storage challenges. A one-dimensional Ni-MOF is grown in situ between MXene layers, resulting in a specific capacitance of 960 F g⁻¹ at 0.5 A g⁻¹. A Ni-MOF/MXene//AC device was also created, with an operating voltage of 1.6 V, an energy density of 26.1 Wh kg⁻¹, and a power density of 8000 W kg⁻¹. The device retained 92.4% of its capacity after 5000 cycles, demonstrating excellent performance.
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EUROPEAN POLYMER JOURNAL
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2025
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IF 6.3
Lingke Liu,Yaling Mao,Minjuan Gao,Xingyu Fan,Yueqin Li
Poly(N-isopropylacrylamide) (PNIPAM) composite hydrogels have emerged as prime candidates for soft hydrogel actuators. However, due to the strong dependence of their actuation behavior on structural features, challenges remain in terms of insufficient driving force, slow response speed, and limited deformation capacity. Herein, we fabricated a photothermal-responsive PNIPAM/SA/MXene hydrogel by incorporating Ti 3 C 2 T x MXene and sodium alginate (SA) into a PNIPAM matrix as the active layer. Through interfacial infiltration, this hydrogel was then integrated with a pH-responsive poly(acrylamide-co-acrylic acid) [P(AAM-co-AA)] hydrogel to create a bilayer actuator with the configuration PNIPAM/SA/MXene//P(AAM-co-AA). By controlling the environmental temperature and pH value, the actuator exhibits remarkable bidirectional actuation, including a broad bending range (+100° to −917°) and high initial velocity (4.5°/s over 103 s), enabling flower-shaped actuators to achieve fast programmable petal blooming/closing. By virtue of the photothermal effect of MXene and the thermoresponsive property of the PNIPAM scaffold, a 10-mm-long PNIPAM/SA/MXene strip can achieve a 180° rotation within 30 s under the control of near-infrared (NIR) light, thereby simulating the motion of a sailboat. Furthermore, the PNIPAM/SA/MXene strain sensor achieved a good sensitivity (GF = 2.54) over a wide strain ranging from 0 ∼ 400 %, and an ultra-fast response time (150 ms). Under near-infrared light irradiation, the PNIPAM/SA/MXene-based actuator realizes a self-sensing function to monitor its deformation state by correlating the response relationships between surface temperature, bending angle, and relative resistance changes. A specially designed self-sensing actuator is used to perceive Morse codes through real-time electrical signals and pattern variations. This work presents a scalable strategy for fabricating high-performance hydrogel actuators for bionic soft robotics and highlights its significant potential in multiplex motion perception.
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高影响因子
MICROCHEMICAL JOURNAL
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2025
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IF 5.1
Jihua Wei,Pengyuan He,Xudong Xin,Yuanxun Gong,Jiayi Zhang,Longjian Huang,Kai Zhang,Xianjiu Liao
A label-free, isothermal, surface-confined electrochemiluminescence assay for apurinic/apyrimidinic endonuclease-1 (APE1) is presented, in which target-triggered isothermal amplification is coupled to a bipedal DNA walker on a PEI-Ru(dcbpy)₃ 2+ /AuNPs@Ti₃C₂ (MXene) transducer to provide high signal with low background. Under optimized conditions, a log-linear range of 1.0 × 10 −3 –1.0 × 10 5 U·L −1 and a limit of detection of 5.62 × 10 −3 U·L −1 were obtained. Applicability in complex media was demonstrated in diluted human serum, yielding recoveries of 96.56–104.51 % with RSD <5 %. Selectivity controls against common nucleases and proteins showed minimal interference, and stepwise electrochemical characterization supported successful interface construction. Feasibility of the nucleic-acid modules and pathway was verified by native and denaturing PAGE, and material identity/localization was corroborated by updated EDS mapping with enhanced Ru/C clarity. By integrating dual amplification on a conductive MXene/Ru interface in a compact, label-free format, this platform enables activity-unit quantitation of APE1 in biologically relevant samples and can be adapted to other DNA-repair enzymes by reprogramming recognition sequences.
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Materials Horizons
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2025
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IF 10.7
Shuo Zhang,Fushuo Wu,Feiyue Hu,Peiying Hu,Miaoping Li,Peng Zeng,Peigen Zhang,Tianyu Wang,Shuangshuang Chen,Jian Liu,Longzhu Cai,Zhengming Sun
Radar/infrared-compatible stealth materials enhance survivability by reducing the radar cross-section and suppressing infrared signatures. However, the significant differences in frequency characteristics across electromagnetic wavebands present challenges in optimizing cross-band electromagnetic response. To address this issue, we propose a cross-dimensional integration strategy. Zero-dimensional (0D) SiO2 aerogel particles with low thermal conductivity act as infrared radiation modulation component and two-dimensional (2D) Ti3C2Tx MXene nanosheets with high electronic conductivity function as the electromagnetic wave-responsive component; the 0D and 2D functional components are directionally anchored onto one-dimensional (1D) Kevlar nanofiber (KNF) surfaces through hydrogen bonding, cooperatively constructing a monolithic interconnected network structure. The as-designed MXene/SiO2/KNF aerogel (MSKA) has a bionic-inspired “root-soil” structure, which effectively reduces infrared radiation intensity through multiple scattering effects and enhances electromagnetic wave attenuation by optimizing spatial impedance matching and introducing multiple loss mechanisms. The MSKA exhibits excellent microwave absorption, achieving a minimum reflection loss of -64.69 dB at a thickness of 1.83 mm, with an effective absorption bandwidth (RL < -10 dB) covering 7.2 GHz; thermal testing reveals a surface temperature difference of 123.1 °C under a 175 °C heat source, indicating a significant reduction in infrared radiation intensity. This assembly strategy, enabling independent regulation of electromagnetic loss and thermal conduction through multidimensional integration, provides new insights for developing lightweight, high-performance, and multispectral stealth materials.
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高影响因子
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