CHEMICAL ENGINEERING JOURNAL
·
2026
·
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
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Jianan He,Adrian Chun Minh Loy,Jining Guo,Ali Zavabeti,Dingqi Wang,Longbing Qu,Raveen Wijesuriya,Yuezhu Xiao,Jitraporn Vongsvivut,Joshua D. Butson,Qinfen Gu,Gang Kevin Li
Fluoride-free one-step molten-salt synthesis of Co-TiS 2 /Ti 3 C 2 T x heterojunction. • In situ growth of Co-TiS 2 on Ti 3 C 2 T x MXene modulates electronic structure. • Co-TiS 2 /Ti 3 C 2 T x catalyst exhibits enhanced HER and OER performance. • In situ synchrotron FTIR and DFT reveal boosted catalytic mechanisms. Two-dimensional MXenes have emerged as versatile platforms for electrocatalysis due to their tunable surface chemistry and layered structures. However, the intrinsic activity of MXenes is limited by their vulnerability in oxidizing and alkaline environments. Herein, we report a one-step molten-salt topochemical transformation that simultaneously tailors MXene surface terminations and constructs an in situ Co-TiS 2 /MXene heterointerface. This method effectively disperses hexagonal Co-TiS 2 nanoparticles, increases the exposure of active sites, and prevents the oxidation and aggregation of Ti 3 C 2 T x , significantly enhancing the overall water splitting performance. The incorporation of S promotes the transformation of the Ti 3 C 2 T x to the Co-TiS 2 derivative, modulates the electronic structure, and is predicted by DFT calculation to provide more favorable adsorption energies of reaction intermediates. Combined experimental characterization, including X-ray absorption spectroscopy, high-resolution transmission electron microscopy, and in situ synchrotron-based Fourier-transform infrared spectroscopy, together with density functional theory calculations, reveals that the MXene-derived Co-TiS 2 stabilizes the Co atoms, facilitating both hydrogen and oxygen evolution reactions. Consequently, the Co-TiS 2 /Ti 3 C 2 T x (T x = S, Cl, O) catalyst exhibits enhanced bifunctional activity in 1 M KOH, with lower overpotentials and excellent stability than pristine Ti 3 C 2 T x MXene. This study highlights the potential of surface-engineered MXenes and their derivatives for the rational design of highly efficient electrocatalysts and provides insight into the role of surface terminations in tuning structure and catalytic performance.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2026
·Vol. 37
·期 21
·1675
·
IF 3.2
Naseer Abou Bakar,Nadeem Muhammad,Younis Adnan,Aziz-ur-Rehman,Rehman Ubaid ur,Ali Tahir,Hussain Shahzad
The rapid advancement of highly integrated and compact electronics has spurred an urgent demand for ultrathin, lightweight, and flexible electromagnetic interference (EMI) shielding materials that combine superior shielding effectiveness (SE) with robust mechanical durability. To address this challenge, we engineered flexible and lightweight composite films composed of MXene nanosheets, 1D silver nanowires (AgNWs), and a conductive PEDOT: PSS polymer via a scalable vacuum-assisted filtration process. The resulted co-continuous segregated structure endows the composite films with exceptional electrical conductivity, mechanical resilience, and outstanding EMI shielding performance. Notably, the ultrathin (0.014 mm) binary MXene/AgNW (1:1) BMA50 composite film achieves an exceptional EMI SE of 65 dB in the X-band (8.2–12.4 GHz), corresponding to a remarkable specific shielding effectiveness (SSE) of 26,784 dB cm 2 g −1 . Furthermore, the ternary composite film TMA10 (0.032 mm) incorporating MXene, AgNWs, and PEDOT: PSS exhibited an EMI SE of 50 dB with improved mechanical strength (120 MPa) compared to the binary composite with an SSE of 6847 dB cm 2 g −1 . All fabricated films exhibit a shielding efficiency greater than 99.99%, making them highly suitable for practical applications. The PEDOT:PSS/Ti 3 C 2 T x –AgNW ternary composite exhibited significantly enhanced mechanical performance compared to the MXene–AgNW binary system, achieving a maximum tensile strength of 120 MPa, a Young’s modulus of approximately 2.8 GPa, and superior toughness, owing to the synergistic reinforcement of the conductive polymer and AgNW-bridged MXene network. The synergistic interaction between AgNWs and MXene within the PEDOT:PSS matrix enhances electrical conductivity and forms a porous yet mechanically robust framework, enabling efficient EMI shielding while maintaining flexibility. This scalable strategy offers a promising route for high-performance flexible EMI shielding materials.
✓ 已验证
产品关联
DOI
高影响因子
Gels
·
2026
·Vol. 12
·期 8
·690
·
IF 6.4
Ran Jin,Qingquan Xue,Yang Zhang
Developing fiber-shaped supercapacitors (FSCs) with high capacitance, high energy density, and exceptional rate performance is crucial for reliable, stable and high-performance wearable electronics. Here, a polyaniline (PANI) @ MXene Ti3C2Tx/graphene (PTG) aerogel fiber was rationally fabricated via a confined hydrothermal method followed by freeze-drying treatment. The graphene sheets construct the skeleton of the aerogel fiber, which possesses a porous and interlinked structure, providing interconnected diffusion channels and a high specific surface area that promote electrolyte migration and abundant ion adsorption sites. Moreover, the covalent modification between PANI nanoparticles and Ti3C2Txsheets can significantly improve interfacial coupling and provide abundant redox sites, resulting in a reduced energy barrier of electron transfer, good interfacial stability and superior H+storage capability. As a consequence, the PTG aerogel fiber electrode delivers an excellent specific mass capacitance of 484.8 F g−1, impressive rate properties (244.4 F g−1at 10 A g−1) and exceptional cycle ability (85.2% after 5000 cycles). Additionally, the fabricated symmetrical FSC exhibits considerable electrochemical performance, including high capacitance and good energy density. This work depicts a novel route to prepare a graphene fiber-based electrode for high-performance FSCs in an intelligent wearable system.
✓ 已验证
产品关联
DOI
高影响因子
Small
·
2026
·
IF 11.8
Nandong Deng,Jun Li,Yang Hong,Zeyang Zhang,Zegeng Chen,Zhengyu Zhang,Xinqi Wang,Zhuyu Hua,Chunyu Yu,Amashaev Rustam,Tongtong Xu,Yang Li,Zhongxiang Zhou
Achieving broadband microwave absorption while maintaining a thin profile is a challenge due to the conflict of inherent impedance with attenuation. Herein, dual-transition metal T i N b C T
✓ 已验证
产品关联
DOI
PubMed
高影响因子
NANOTECHNOLOGY
·
2021
·Vol. 32
·期 41
·415204
·
IF 3.874
Qi Zou,Chaofan Shi,Bo Liu,Dejun Liu,Duo Cao,Feng Liu,Yi Zhang,Wangzhou Shi
Polyacrylonitrile/Ti3C2Tx MXene/silver nanoparticles fiber membranes with different silver nanoparticles contents and thickness of porous structure have been successfully prepared by electrospinning. Through the measurement of terahertz time domain spectrum, the shielding effect of the fiber membrane with 1% silver nanoparticles content can reach up to 12 dB. Moreover, the thickness of the spinning fiber membranes is controlled by adjusting the spinning time, so as to better analyze the influence of the thickness of the shielding performance in terahertz band. We attribute this excellent phenomenon to porous structure of the spun fiber membrane and combination of Ti3C2Tx MXene with few-layers and silver nanoparticles to increase the absorption and conductivity of the fiber membrane, thereby enhancing the shielding effect in terahertz range. Meanwhile, the prepared polyacrylonitrile/Ti3C2Tx MXene/silver nanoparticles fiber membranes show good stability and little change in terahertz shielding effect after high temperature annealing. This may provide potential ideas about the development of high-performance terahertz shielding materials, which are of great significance of terahertz electromagnetic shielding.
✓ 已验证
DOI
高影响因子
TRIBOLOGY INTERNATIONAL
·
2026
·
IF 7.6
Tiantian Wang,Xinnan Wang,Yixin Wang,Shujuan Liu,Qian Ye,Feng Zhou
Herein, cetyltrimethylammonium bromide (CTAB)-modified MXene nanosheets were combined with the bis-urea gelator N, N′-didodecyl-1,2-cyclohexyldiurea (DCHU) and base oils to construct MXene-based supramolecular oleogels. The oleogels, formed via hydrogen-bonding-mediated self-assembly, exhibited a gel transition temperature range of 67–75 °C and pronounced shear-thinning behavior, enabling shear-induced structural reconstruction and stable oil confinement. Compared to the 500SN base oil, the optimized rGel-CTAB-MX oleogel reduced the mean coefficient of friction (COF) by 44.22% to 0.111, decreased the wear volume by 89.91% to 12.73 × 10 4 μm 3 , and enhanced the load-carrying capacity from 150 N to 450 N. These enhancements arise from the synergistic lubrication effects of CTAB-MX nanosheets and the oleogel network, including tribofilm formation, MXene interlayer sliding, and surface mending/polishing. Notably, the rGel-CTAB-MX oleogel demonstrates sensitive and reversible photothermal gel-state regulation with excellent cycling stability. This work provides a dynamically tunable MXene-based oleogel platform integrating tribological enhancement and light-responsive regulation for potential smart lubrication applications.
✓ 已验证
产品关联
DOI
高影响因子
Materials Today Electronics
·
2025
·
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.
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2025
·
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.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Nano
·
2025
·
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.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
EUROPEAN POLYMER JOURNAL
·
2025
·
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.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2025
·
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.
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）