JOURNAL OF ALLOYS AND COMPOUNDS
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2026
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IF 6.7
Huayuying Peng,Fei Liu,Shangyan Zhou,Xinyi Ran,Xiaodan Wang,Mengqing Yao
Metal promotion is a common strategy to improve the hydrogenation activity of oxide catalysts. However, its efficacy is frequently hindered by insufficient hydrogen supply to active sites and the tendency of metal dopants to sinter under high-temperature conditions. Herein, we design a Cu-MXene/ZnZrO x composite catalyst, in which Ti vacancies within the MXene framework anchor Cu, enabling efficient hydrogen activation and subsequent spillover to ZnZrO x . In comparison with the conventional Cu/ZnZrO x catalyst, the Cu-MXene/ZnZrO x structure not only enhances the resistance of Cu species to high-temperature sintering but also significantly promotes the kinetics of hydrogen transfer. Additionally, this structural design facilitates the generation of a higher density of oxygen vacancies (OVs). As expected, the Cu-MXene/ZnZrO x catalyst demonstrates outstanding performance, achieving 12.3% CO 2 conversion and 91.2% methanol selectivity—exceeding all previously reported ZnZrO x -based systems. Density functional theory (DFT) calculations and Diffused reflectance infrared fourier transform spectroscopy (DRIFTS) indicate that atomically dispersed Cu sites facilitate H 2 dissociation, while the Cu-MXene interface promotes rapid H spillover to neighboring Zn-Zr sites, enhancing electron transfer and CO 2 reduction kinetics, thereby forming abundant active intermediates of HCOO* and CH 3 O*. This study offers a robust and scalable approach for developing highly efficient catalysts for CO 2 -to-methanol conversion.
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Materials Today Communications
·
2026
·
IF 4.9
Na Qiang,Tao Zhu,Lihong Huang,Wenlong Zhang,Peishi Hu,Jiayi Lu,Xuefeng Zhang,Qingyun Tang,Guocong Liu,Qiang Lin,Shuo Tang
Bone tissue engineering requires biomaterials capable of bionically simulating the physiological electro-microenvironment of natural bone to regulate osteogenic cell behavior. Herein, Ti 3 C 2 T x MXene/P(VDF-TrFE) electroactive nanocomposite membranes with tunable surface potential were successfully fabricated via electrospinning technology. The microstructure, crystal phase composition, thermal stability, piezoelectric performance, and electrical conductivity of the composite membranes were systematically characterized using Scanning Electron Microscopy (SEM), X-Ray Diffraction (XRD), Fourier Transform Infrared Spectroscopy (FTIR), Raman Spectroscopy (Raman), Differential Scanning Calorimetry (DSC), Thermogravimetric Analysis (TGA), piezoelectric coefficient (d 33 ) measurements, and surface resistance tests. XRD, FTIR, and Raman characterizations confirmed that MXene acted as a nucleating agent, which inhibited the formation of the α-phase of P(VDF-TrFE) and promoted the generation of the ferroelectric β-phase. Piezoelectric and electrical property tests demonstrated that MXene doping significantly enhanced the piezoelectric performance and electrical conductivity of the composite membranes. Specifically, the d33 value of the composite membrane with 2.0 wt% MXene reached 5.4 pC/N. Moreover, the surface resistance of MXene-doped membranes was drastically reduced from 230.0 mΩ (for the pure P(VDF-TrFE) membrane) to ∼24–25 mΩ, constructing an efficient charge transport pathway. Consequently, the MXene/P(VDF-TrFE) membranes facilitated cell adhesion, stretching, and proliferation, exhibiting excellent biocompatibility. Meanwhile, cells cultured on the composite membranes displayed enhanced spreading and improved cytoskeletal organization. Further osteogenic assessments revealed that MXene-containing substrates effectively promoted osteogenic differentiation at both the early and late stages, as well as enhanced the formation of mineralized extracellular matrix. These findings suggest that MXene incorporation provides a favorable microenvironment for directing the osteogenic differentiation of Bone Marrow Mesenchymal Stem Cells (BMSCs). The fabricated MXene/P(VDF-TrFE) nanocomposite membranes possess a biomimetic microenvironment with sustainable electric potential and optimal topographical structure, offering an innovative and well-suited strategy for applications in bone regeneration.
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JOURNAL OF MEMBRANE SCIENCE
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2026
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IF 8.8
Xing-Guo Fu,Jia-Wei Wang,Yin Li,Guo-Xing Li,Chang Liu,Qing Li,Su Chen
The rapid industrialization has generated substantial amounts of oily wastewater, posing direct risks to human health, and ecosystems. Environmental-friendly and high-efficiency purification technology is highly desirable. Herein, we designed dual-functional polyvinylidene fluoride/polyacrylonitrile/ZIF-8-MXene (PVDF/PAN/ZIF-8-MXene) nanofiber membrane towards high-efficiency oil-water separation. Specially, ZIF-8 is continuously fabricated via microfluidics, where the channel diameter and solution flow rate could be precisely controlled to optimize the synthesis of ZIF-8 nanocrystals, overcoming drawbacks of long reaction times and broad size distribution in traditional methods. By continuously microfluidic electrospinning and spraying, PVDF/PAN/ZIF-8-MXene nanofiber membrane was fabricated, which exhibit dual functionality (hydrophilic oil-blocking and adsorption capture). The hydrophilic MXene layer forms a dense hydrated barrier, which significantly enhances water flux and mitigates membrane fouling. While ZIF-8 could capture tiny oil droplets, thereby efficiently improving oil-water separation efficiency. As expected, the composite membrane demonstrates excellent separation flux (6783∼9634 L m −2 h −1 ), superior separation efficiency (>99.5%) and outstanding recyclability in diverse oil-in-water emulsions. This work provides an efficient membrane for oil-water system purification, which gives a new insight into design of high-performance separation materials.
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Nano-Micro Letters
·
2026
·Vol. 18
·期 1
·302
·
IF 38.5
Lu Bokai,Jin Guangkai,Cui Yuhong,Zhang Tianyi,Liu Shujuan,Ye Qian,Liu Xuqing,Zhou Feng
Catechol-functionalized carbon dots chemically anchor onto MXene nanosheets, enhancing interfacial polarization and enabling impedance matching optimization through glycerol-regulated gel polarity.
A flexible organic hydrogel absorber was constructed via synergistic integration of a dual-crosslinked polymer network and conductive MXene/carbon dots (CDs) hybrid fillers.
The MXene/CDs hydrogel exhibits outstanding performance (RL min = −47.9 dB, 3.5 GHz bandwidth at 3.1 mm) together with improved mechanical robustness.
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CHEMICAL ENGINEERING JOURNAL
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2026
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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.
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JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
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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.
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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.
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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
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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.
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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.
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Materials Today Nano
·
2026
·
IF 7.6
Han Liu,Zijian Gao,Yifan Fu,Qingyu Yang,Kuibo Yin
A three-dimensional MXene/BC/CeO 2 aerogel with lightweight, highly elastic, and thermally insulating characteristics was constructed. • CeO 2 significantly enhances the interfacial and dipole polarization of the composite. • At an identical thickness, it achieves the broadest EAB of 6 GHz along with an optimal RL min of -49.3 dB. • The designed periodic architecture broadens the bandwidth to 14.54 GHz, covering over 90% of the target frequency range. Transition metal carbides/nitrides (MXenes) exhibit high electrical conductivity, a unique two-dimensional layered structure, and abundant surface functional groups and defects, thus holding great promise for electromagnetic wave absorption (EWA). However, issues such as impedance mismatch and a tendency to self-stack severely restrict their practical applicability. In this study, a lightweight and highly elastic Ti 3 C 2 T x MXene/bacterial cellulose (BC)/ceria (CeO 2 ) composite aerogel was developed via a facile freeze-drying method. The three-dimensional lamellar porous architecture, with MXene and BC serving as a robust skeleton, effectively prevents the stacking of MXene nanosheets, while the introduction of CeO 2 nanoparticles optimizes the impedance matching and significantly enhances the polarization loss, enabling excellent electromagnetic wave absorption with polarization loss as the dominant mechanism. By simply adjusting the CeO 2 doping content, an effective absorption bandwidth (EAB) of 6 GHz and a minimum reflection loss (RL min ) of -49.3 dB can be achieved, and through macroscopic structural design, the EAB is expected to be further broadened to 14.54 GHz. Moreover, the composite aerogel exhibits an RCS reduction of 28.12 dB·m 2 and an ultralow thermal conductivity of 0.035 W/(m·K), endowing it with potential for multispectral camouflage compatible with both radar and infrared detection. This study offers a new strategy for developing high-performance MXene-based composite wave-absorbing materials. Download: Download high-res image (416KB) Download: Download full-size image
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Applied Materials Today
·
2026
·
IF 7
Xueyue Lyu,Liying Pan,Qiu Zhang,Xinrui Wang,Chenyang Zhang,Jiawei Qi,Guangdong Zhao
2D MXene synergistically combines with biochar fibers to construct a porous 3D conductive network. • Ceramic aerogels possess superior microwave absorption capabilities coupled with structural stability. • A synergistic attenuation mechanism dielectric loss, magnetic loss, polarization, as well as multiple refraction and scattering is achieved. • An ultra-strong reflection loss of −60.1 dB is achieved at a thickness of 2.9 mm. Developing efficient electromagnetic wave absorbing materials capable of adapting to complex environments is of significant importance for advanced radar and electronic systems. Here, highly conductive MXene nanosheets are introduced into the biomass macromolecule bacterial cellulose (BC), and a BC/MXene (BM) hybrid scaffold with a honeycomb-like structure was prepared via directional freeze-drying. Subsequently, the SiBCOFe precursor was combined with the BM scaffold using a liquid-phase infiltration method, yielding BM/SiBCOFe ceramic aerogels. The results show that the conductive network formed by pyrolyzed BC-derived biomass carbon synergistically with MXene enhances the dielectric loss capability of the aerogel. Meanwhile, the heterostructures in situ generated on the surface of the BM from the precursor effectively improve the interfacial polarization effect and mechanical properties of the aerogel. Fe doping not only enhances magnetic loss but also optimizes impedance matching, ultimately achieving dual improvement in microstructure design and electromagnetic wave absorption performance. The BM/SiBCOFe ceramic aerogels exhibits excellent electromagnetic wave absorption performance: at a matching thickness of only 2.9 mm, the minimum reflection loss ( RL min ) reaches −60.1 dB, with an effective absorption bandwidth (EAB) of 4.6 GHz. The aerogel also exhibits excellent thermal and structural stability, making it an efficient electromagnetic wave absorbing material suitable for extreme environments. Download: Download high-res image (317KB) Download: Download full-size image
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