Advanced Membranes
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2026
·
IF 12.6
Haimeng Huang,Ziming Zheng,Jingyi Ren,Chen Wang,Jianfeng Zhang,Tianmeng Zhang,Weiwei Zhang,Yahui Li,Meng Li,Hongzhi Cui
Two-dimensional MXene membranes are promising for dye wastewater purification. Herein, we propose an electrostatically stabilized one-dimensional intercalation strategy to construct ultrapermeable and antifouling MXene membranes, in which polyaniline-coated cellulose nanofibers (CNFs@PANI) are intercalated into Ti 3 C 2 T x nanosheets and deposited onto a PVDF substrate via vacuum filtration. The introduction of flexible one-dimensional intercalants effectively widens the interlayer spacing and forms a loose yet stable transport architecture, while the electrostatic interactions induced by PANI coating ensure robust interlayer stabilization and suppress membrane compaction and collapse during filtration. Benefiting from the synergistic interlayer modulation, the membrane delivers an ultrahigh pure water permeability of 273.3 L m −2 h −1 bar −1 , representing a 15-fold enhancement compared with pristine Ti 3 C 2 T x membranes, while maintaining rejection ratios of 99.3% for rhodamine B and 100% for congo red. Moreover, rejection efficiencies exceeding 90% are achieved for oil-water emulsions such as n-hexane/water. Beyond microstructural regulation, the spiral flow configuration further enhances local shear stress, as validated by computational fluid dynamics simulations, effectively mitigating contaminant deposition and adhesion. Consequently, the flux recovery ratio of the intercalated MXene membrane reaches 96.9%, significantly outperforming the pristine counterpart. Finally, the durability and practical wastewater treatment capacity of this membrane have also been verified, and it possesses potential for large-scale production.
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ChemNanoMat
·
2026
·Vol. 12
·期 4
·e202600011
·
IF 2.6
Yang Zhou,Yajun Xue,Bing Zhou,Gaojie Han,Chuntai Liu,Yuezhan Feng
Ammonia-assisted high-temperature reduction is exploited to create ultrathin (23.7 µm) MXene/reduced graphene oxide/Ni (MXene/rGO/Ni) composite films in which monodisperse metallic Ni nanoparticles are nanosoldered between conductive nanosheets. The single-step protocol simultaneously deoxygenates graphene oxide (GO), restores the MXene basal plane, and reduces Ni 2+ , generating an intact yet flexible layered scaffold with a through-plane electrical conductivity of 3.3 × 10 3 S m −1 and sheet resistance as low as 4.5 Ω sq −1 . The reconstructed heterointerfaces supply abundant dipole polarization centers and magnetic dissipation sites, endowing the film with an X-band electromagnetic interference shielding effectiveness (EMI SE) of 35.1 dB that operates through a synergistic reflection absorption mechanism (reflection coefficient R ≈ 0.9, absorption shielding effectiveness SE A ≈ 24.9 dB). Benefiting from the dense conductive network, the film enables efficient photothermal conversion and delivers linearly tunable photothermal response with excellent cycling stability. Mechanical tensile tests give an ultimate strength of 7.4 MPa, Young's modulus of 0.97 GPa, and toughness of 31.19 KJ m −3 for rMG/Ni-600 films. The aqueous fabrication route and excellent batch-to-batch reproducibility highlight the reliability of MXene/rGO/Ni homogeneous layers as lightweight, multifunctional shields for flexible electronics and high-temperature photothermal-management platforms.
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SENSORS
·
2026
·Vol. 26
·期 12
·3856
·
IF 4
Qichen Yang,Chun Yang,Mingzhu Liu,Nan Su,Jingran Sun,Jian Hou,Yixue Fu,Jin Wu,Yu Wang,Yuan Peng,Jialei Bai,Ying Liu,Zunquan Zhao
HighlightsWhat are the main findings?A dual-color fluorescence aptasensing system utilizing quantum dots and polydopamine-coated MXene was developed for simultaneous detection of spike and hemagglutinin proteins.Centrifugation-assisted signal separation, modular storage of aptamer lyophilized powder, and copper-free click chemistry-mediated self-assembly enabled sensitive multiplex detection.What are the implications of the main findings?The system offers a modular strategy that can be adapted to other respiratory pathogen targets by simply exchanging the aptamer lyophilized powder.Validation in artificial saliva suggests potential practicality for point-of-care application in clinical and public health settings.Antigen detection provides rapid and convenient diagnosis of respiratory infections. This study develops an innovative dual-fluorescence aptasensing method based on polydopamine-functionalized MXene (PDA-MXene) for the simultaneous detection of spike protein and hemagglutinin protein. The method employs green- and red-emitting quantum dot (QD) probes as fluorescence reporters, and the PDA-MXene as an effective adsorption and separation substrate. Coupled with a centrifugation-assisted separation strategy, this design method reduces background interference and enhances detection reliability. The method demonstrates good analytical performance, with detection limits of 0.82 ng/mL for spike protein and 2.11 ng/mL for hemagglutinin protein in single-channel mode. The dual-channel mode enables reliable and simultaneous quantification of both target proteins with minimal spectral cross-talk. Furthermore, this method exhibits high specificity against interferents including ions, proteins, and toxins. Artificial saliva, chosen as real sample, is spiked with target proteins to investigate the practical applicability of the method, showing recovery rates for both target proteins between 100 and 114 sensing strategy is simple to operate and allows the detection of new targets by simply replacing the azide-modified aptamer lyophilized powder. It therefore holds promising application for the simultaneous detection of multiple proteins in point-of-care testing and health monitoring fields.
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ACS Applied Materials & Interfaces
·
2026
·
IF 7.8
Luyao Guo,Caixia Sun,Cong Liu,Qingchao Fan,Menghan Xue,Xinhua Xu
Living organisms in nature can sensitively perceive environmental stimuli and respond through rapid adaptive deformation. Inspired by this functionality, self-sensing hydrogel actuators have been developed, offering broad potential in areas such as information encryption, flexible wearables, and human–machine interfaces. Here, we report a versatile strategy for fabricating self-sensing hydrogel actuators with simultaneously high electrical conductivity and excellent mechanical durability. A robust interpenetrating network is constructed between surface-functionalized MXene nanomonomers (T-MXene) and modified cellulose nanocrystals (CNC-Vi), which markedly enhances the stability of poly(N-isopropylacrylamide) (PNIPAm) hydrogel. In addition, incorporation of poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) further enhances the composite’s electrical conductivity while simultaneously improving the environmental adaptability. The resulting hydrogel exhibits high conductivity (14.92 S m–1), remarkable strain sensitivity (GF of 2.17 to 7.23), and outstanding durability. Leveraging these features, we realize reliable information encryption and storage, as well as wearable motion sensors capable of sensitive and precise motion detection. Moreover, the hydrogel system serves as an excellent platform for constructing high-performance self-sensing actuators. By inducing a gradient alignment of T-MXene/CNC-Vi under a direct-current (DC) electric field, we develop a shape-programmable hydrogel actuator that combines rapid responsiveness, remote light-driven actuation, and intrinsic self-sensing capability. This study not only provides a paradigm for designing advanced tactile and self-sensing materials but also establishes a foundation for achieving closed-loop, remotely controlled soft actuators for next-generation intelligent mechanical systems.
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JOURNAL OF ALLOYS AND COMPOUNDS
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2026
·
IF 6.7
Xingyu Chen,Yining Wang,Yue Song,Zishuo Shi,Tianqi Ren,Yuhan Cui,Chen Zhou
For a considerable period, the development and preparation of electrode materials for supercapacitors have primarily focused on enhancing energy density and voltage window, often at the expense of rate capability. Transition metal tellurides (TMTe) possess inherent advantages for achieving exceptional rate performance due to their high intrinsic electronic conductivity, open ion diffusion channels, and rapid surface pseudocapacitive reactions. To maximize the conductivity and structural stability of transition metal tellurides, the introduction of a conductive MXene quantum dots (MQDs) substrate presents an excellent strategy. Accordingly, in this work, a Co 0.32 Fe 0.32 Te/MQDs composite was synthesized via a two-step hydrothermal tellurization process, using MQDs as the conductive substrate and a MOF material with fast ion channels as the precursor. Benefiting from high electrical conductivity and a loose, porous surface structure, the charge storage mechanism of Co 0.32 Fe 0.32 Te/MQDs is not limited to slow bulk diffusion-controlled redox reactions, but also encompasses significant contributions from both surface-controlled and diffusion-controlled pseudocapacitive behavior. Moreover, the relatively large tellurium atoms act as structural “pillars”, helping to buffer volume changes during high-rate charge/discharge processes, which is highly favorable for high rate performance. As anticipated, in a three-electrode configuration, Co 0.32 Fe 0.32 Te/MQDs delivers a specific capacitance of 279.4 F g⁻ 1 at 1 A g⁻ 1 and retains 214 F g⁻ 1 even at a current density of 10 A g⁻ 1 , demonstrating an impressive rate capability of 76.5%. After 10,000 cycles at 10 A g⁻ 1 , the capacitance retention remains at 57.14%. Furthermore, an asymmetric supercapacitor assembled with Co 0.32 Fe 0.32 Te/MQDs as the positive electrode and activated carbon (AC) as the negative electrode (AC//Co 0.32 Fe 0.32 Te/MQDs) exhibits superior electrochemical performance. It achieves an energy density of 12.075 Wh kg⁻ 1 at a power density of 750 W kg⁻ 1 , and maintains a high capacitance retention of 78.78% after 10,000 charge/discharge cycles at 10 A g⁻ 1 . In summary, this work expands the selection of supercapacitor electrode materials that combine high cycling stability with excellent rate capability, resulting in a promising faradaic electrode material for asymmetric supercapacitors with substantial application potential.
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CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Zhenluo Yuan,Fei Ya,Yang Shi,Shuyan Guan,Pingping Wang,Pei Liu,Shiqian Zhao,Qiuming Peng,Yanping Fan,Baozhong Liu
Ru/N-Mo 2 C MXene was assembled by hydrothermal and impregnation reduction process. • The introduction of Ru/N-Mo 2 C MXene accelerates the hydrolysis rate of ammonia borane. • Ru/N-Mo 2 C MXene exhibits a high TOF value of 1092 mol H2 ∙mol Ru −1 ∙min −1 . • Dual active sites of Ru and N-Mo 2 C MXene promotes the hydrogen production for NH 3 BH 3 . Ammonia borane (NH 3 BH 3 , AB) is an ideal hydrogen storage medium, but its intrinsic physicochemical properties require efficient catalysts for rapid hydrolytic dehydrogenation at room temperature. Herein, the Ru nanoparticles anchored nitrogen-doped Mo 2 C MXene (Ru/N-Mo 2 C MXene) catalyst was successfully synthesized via a hydrothermal method combined with an impregnation-reduction strategy, using urea as the nitrogen source. When the mass ratio of Mo 2 C MXene to urea was 1:6, the Ru/N-Mo 2 C MXene catalyst exhibited optimal performance. At 298 K, the turnover frequency value of Ru/N-Mo 2 C MXene was 1092 mol H2 ∙mol Ru −1 ∙min −1 , with an activation energy of 51.74 kJ∙mol −1 , and the catalytic activity remained 86.2% after five cycles. Mechanism analysis indicates that the superior hydrogen production performance of AB is attributed to both the generation of 1.59 nm Ru nanoparticles and the modulated local electronic structure induced by N doping originating from Ru/N-Mo 2 C MXene. These features facilitate the generation of dual active sites (electron-rich Ru and electron-deficient N-Mo 2 C MXene), which efficiently promote the cleavage of B H in AB and O H in H 2 O, thereby significantly boosting the catalytic activity of Ru/N-Mo 2 C MXene for AB hydrogen production. This work establishes a feasible strategy for designing high-efficiency catalysts for ammonia borane hydrolysis.
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ACS Applied Polymer Materials
·
2026
·
IF 5.2
Jiaming Fan,Kefeng Liu,Guihua Yang,Qixiu Dong,Junchao Li,Jiachuan Chen
The efficient cleanup of high-viscosity crude oil spills remains a formidable challenge due to the poor fluidity of oil and the complexity of marine environments. Herein, a multifunctional superhydrophobic MXene/cellulose nanofiber (S-MXene/SCNF) composite aerogel was developed for all-weather crude oil remediation. By combining freeze-drying with a two-step silanization strategy, the MXene nanosheets were uniformly assembled into the CNF scaffold, creating a stable 3D conductive network with excellent environmental durability. The resulting S-MXene/SCNF aerogel exhibits dual-mode heat generation capabilities, achieving rapid surface heating up to 188.7 °C under solar irradiation (0.20 W/cm2) and 129 °C under a low voltage of 3.0 V. This localized heating effectively reduces the viscosity of crude oil by several orders of magnitude, thereby solving the problem of slow diffusion in conventional adsorbents. Consequently, the aerogel demonstrates an ultrahigh continuous oil separation flux of 461.2 kg·m–2·h–1 and a fast adsorption time (<45 s). Moreover, the S-MXene/SCNF aerogel maintains stable superhydrophobicity and high separation efficiency even after 50 cycles. Overall, this work presents a scalable, energy-efficient, and environmentally stable material for heavy oil spill remediation.
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Materials Today Physics
·
2026
·
IF 9.3
Binghui Wang,Zhiye Qiu,Yuxin Wei,Mengzheng Wang,Tianming Lu,Liuxie Huang,Qiaoqing Hu,Jindan Wu
Driven by the growing demand for human-machine interaction and smart health monitoring, one-dimensional flexible strain sensors have attracted considerable interest due to their excellent flexibility and compatibility with textile integration. However, conventional sensors based on surface conductive coatings are often hindered by poor interfacial adhesion, inadequate environmental stability, and slow response dynamics. To address these challenges, this study proposes a “deep deposition” strategy to construct polyamide/polyvinyl alcohol (PA/PVA) nanofiber yarns (MPPY) featuring an internal three-dimensional interconnected conductive network via conjugated electrospinning. By precisely tuning the PA/PVA flow ratio, the yarn composition and porosity were tailored, while the intrinsic hydrophilicity of PVA facilitated full cross-sectional infiltration of MXene nanosheets. Subsequent twisting and plying further enhanced mechanical robustness and conductivity uniformity, yielding a three-ply yarn that was then incorporated into elastic fabrics via embroidery for customizable patterning. The resulting yarns exhibited an ultrafast response time (58 ± 2 ms at 10% strain) and demonstrated remarkable sensitivity across multiple strain regimes, with gauge factor values of 1.82 (0–50% strain), 9.71 (50–80% strain), and 22.93 (100% strain), while maintaining a coefficient (R 2 ) above 0.98 throughout. The yarn-integrated textile demonstrated outstanding durability, withstanding over 6000 stretching-releasing cycles at 50% strain, along with excellent washability, and resistance to corrosion in artificial sweat. By implementing patterned configurations (e.g., straight-line and serpentine-line), the fabric sensor facilitated real-time and precise monitoring of multi-joint human motions, including those of the neck, wrist, spine, and knee. This study provides a novel design pathway toward next-generation wearable electronic textiles with high reliability, fast response, and practical versatility.
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CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Yong-Sheng Tan,Heng-Heng Guo,Peng-Peng Duan,Wei-Kang Wang,Yi-Lin Lu,Dong-Hua Xie,Qi-Nian Wang,Xing Zhang
A CoMn 2 O 4 /MXene hybrid catalyst was rationally constructed to overcome the sluggish redox kinetics and inefficient interfacial electron transfer. • MXene functions not only as a conductive scaffold but also as an interfacial electronic modulator. • MXene-mediated electronic coupling promotes high-valent metal-oxo species as the dominant reactive intermediates. • Toxicity evaluation confirmed substantially reduced ecotoxicity of the treated BPA-containing water. Selective nonradical oxidation via high-valent metal-oxo (HVMO) species represents a promising yet mechanistically underexplored pathway for eliminating emerging contaminants. Here, a CoMn 2 O 4 /MXene (CMM) hybrid catalyst was rationally constructed to overcome the sluggish redox kinetics and inefficient interfacial electron transfer, which constrain HVMO species generation in spinel oxide/peroxymonosulfate (PMS) systems. MXene acts as both a conductive scaffold and interfacial electronic modulator, accelerating CoMn 2 O 4 -PMS charge transfer and steering PMS activation toward selective nonradical oxidation. The optimized CMM catalyst achieves complete bisphenol A removal within 5 min ( k = 0.98 min −1 ), nearly double the rate of pristine CoMn 2 O 4 . In addition, this system exhibited broad pollutant degradation, high PMS utilization efficiency, wide pH adaptability, and robust tolerance to complex water matrices. Combined experimental and theoretical analyses reveal that MXene-mediated electronic coupling promotes HVMO species as the dominant reactive intermediates. Toxicity evaluation using three-dimensional excitation-emission matrix (3D-EEM) fluorescence spectroscopy and mung bean germination assays confirmed substantially reduced ecotoxicity of the treated BPA-containing water. Continuous flow operation further demonstrated near-complete BPA removal over 6 h, underscoring practical scalability. This work highlights interfacial electronic regulation as an effective strategy for engineering HVMO-mediated routes in advanced water purification. Download: Download high-res image (372KB) Download: Download full-size image
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SENSORS AND ACTUATORS B-CHEMICAL
·
2026
·
IF 8.3
Ling-qiao Tang,Hao-wen Zhang,Qiong Wu,Di-wen Jiang,Li Wang,Guo-liang Liu,Hai-jun Chen,Zong-kai Yan,Zhe-sheng Feng,Yan Wang
Due to the high electrical conductivity, large specific surface area, and abundant hydrophilic functional groups, MXene-based composites have garnered significant attention as candidate functional materials for humidity sensing. Nevertheless, it remains challenging to simultaneously achieve superior sensitivity, fast response kinetics, and reliable printability in flexible humidity sensors. Herein, a flexible printed humidity sensor based on a Sm 2 O 3 -modified MXene composite was developed, which features a hierarchical nanoflower architecture constructed via solvothermal synthesis. This architecture effectively suppresses MXene restacking while providing abundant mesoporous channels and interfacial sites, facilitating the adsorption and diffusion of water molecules. To further enhance the humidity response, NaCl was introduced to promote ionic conduction. The resulting sensor exhibits rapid response and recovery times (4.9 s and 4.3 s, respectively) and a large capacitance variation of 3357.7% over a wide relative humidity range (11-97% RH). In addition, the sensor demonstrates ultralow hysteresis, favorable repeatability, and excellent long-term stability, with negligible capacitance fluctuation after 10 days of storage. Moreover, proof-of-concept demonstrations were performed for non-contact finger proximity sensing, human respiration monitoring, plant microenvironment tracking, and skin-interfaced humidity detection, demonstrating the potential versatility of the proposed sensor. Collectively, this study presents a promising strategy for fabricating high-performance flexible humidity sensors, offering broad prospects for wearable health monitoring and intelligent human-machine interaction in next-generation Internet of Things systems.
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ACS Applied Materials & Interfaces
·
2026
·
IF 7.8
Zhang YaXi,Liang Jin,Zeng ZiQuan,Zhang Bin,Li Lu,Zhang Li,Chen HongHui
The development of highly efficient and stable bifunctional non-precious metal electrocatalysts is of critical importance for reducing the costs associated with hydrogen production through water electrolysis. In this work, a self-supporting electrode material is designed through an interfacial and high-entropy synergistic strategy. First, this involves loading MXene onto nickel foam to achieve interfacial modification, followed by the in situ growth of a quintuple high-entropy phosphide, resulting in the composite MX@CoNiZnFeMnP/NF. This design enables multiscale synergistic enhancement: at the atomic scale, the introduction of Mn, in synergy with high-entropy effects, optimizes the electronic structures of active sites; at the nanoscale, a highly conductive MXene network facilitates rapid charge transfer; at the micrometer scale, multi-level flower-like hierarchical architectures are developed, significantly enlarging the active surface area and improving mass transport. In 1.0 M KOH, the as-prepared catalyst exhibits excellent bifunctional performance, achieving overpotentials of just 73 mV at 10 mA cm –2 for the hydrogen evolution reaction and 210 mV at 50 mA cm –2 for the oxygen evolution reaction, along with Tafel slopes of 88 and 22 mV dec – 1 , respectively. When applied to overall water splitting, it reaches 10 mA cm – 2 at a cell voltage of only 1.43 V and demonstrates remarkable durability over 70 h of continuous operation. This work offers new insights into the design of high-performance non-noble-metal water-splitting catalysts through multiscale synergistic engineering.
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Journal of Energy Storage
·
2026
·
IF 10.7
Yunhao Wu,Yizhan Gao,Jiaxuan Li,Zhen Wang,Zhigang Shao,Juan Zhang,Jianling Li
2D layered MXene, which holds multiple outstanding properties, like large specific surface area, abundant functional groups, and ultra-high electronic conductivity, have been an attractive anode material for lithium-ion energy storage. However, its practical application is greatly hindered by its limited capacity. Aiming at addressing this problem, this article innovatively proposes to mix NH 4 PF 6 with MXene for sintering, achieving P-doping between MXene layers and the transformation of Ti O and Ti-O-P functional groups. After 1700 cycles of 150 mA g −1 , the modified material still has a high specific capacity of over 250 mAh g −1 , and after 800 cycles of 1500 mA g −1 high current, it still has a capacity retention rate of over 100%. The in-situ XRD, XPS, DFT calculations and other methods have been used to demonstrate that the uniformly distributed phosphorus rich functional groups between MXene layers significantly expand the interlayer spacing, provide more active sites for lithium-ion storage, effectively promote Li + adsorption, and improve capacity and rate performance.
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