ACS Applied Materials & Interfaces
·
2026
·
IF 7.8
Xiang Liu,Mutian Zhang,Wei Zheng,Junjiang Fan,Miaoxi Guo,Li Yang,ZhengMing Sun,Guobing Ying
Aqueous ammonium-ion batteries are promising for safety, low cost, and fast energy storage. However, the influence of electrode surface chemistry on NH4+ storage remains poorly understood. Two-dimensional Ti3C2Tx MXene, with metallic conductivity, tunable interlayer spacing, and abundant surface terminations, serves as an ideal platform to elucidate NH4+ storage mechanisms. Herein, the role of MXene surface termination in regulating NH4+ storage behavior is systematically investigated using density functional theory calculations and experimental validation. The calculations reveal that the -N terminations offer moderate NH4+ adsorption and high electronic conductivity for rapid charge transfer and ion transport, whereas the -O terminations exhibit stronger ion affinity and enhanced surface stability. Importantly, the mixed -N/-O terminations effectively balance adsorption strength and transition-state stabilization, resulting in the lowest NH4+ migration barrier among the modeled pathways. The calculations employ idealized vacuum-separated surfaces with isolated NH4+ and do not explicitly include solvation or electrolyte effects. Guided by these findings, a mixed -N/-O terminated Ti3C2Tx MXene is constructed via a urea-assisted hydrothermal strategy. The optimized NTC-20 electrode delivers 107 mAh g-1 at 1 A g-1, retains 67% capacity at 10 A g-1, and maintains 91% capacity after 10,000 cycles. Ex situ XRD, XPS, and FTIR analyses are consistent with reversible NH4+-associated changes in the local chemical environment and possible storage involving Ti-N···H-N and Ti-O···H-N interactions. Furthermore, the NTC-20//MnO2/CNTs full cell achieves an energy density of 26.7 Wh kg-1 at 1.3 kW kg-1. The results support a dominant role for mixed -N/-O terminations in regulating NH4+ adsorption and diffusion, providing insights into surface-termination engineering for high-performance AAIBs.
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DOI
高影响因子
ACS Applied Engineering Materials
·
2026
·
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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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
·
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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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
·
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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高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2026
·
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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高影响因子
MICROCHEMICAL JOURNAL
·
2026
·
IF 5.2
Xiaohui Xu,Xinyue Wang,Qiang Xie,Jingyao Wu,Kwangnak Koh,Hongxia Chen
Ternary MXene/AuNRs/pSC4 interface enables oriented antibody immobilization. • 1.15 ng mL −1 detection limit in serum, 10–200 ng mL −1 linear range. • Hydrophilic MXene/AuNRs surface resists biofouling without serum pretreatment. • 5.7× signal gain over single-component devices via synergistic amplification. • Clinically distinguishes PD patients from healthy controls ( p < 0.001). Parkinson's disease (PD) management requires point-of-care accessible tools for personalized monitoring of levodopa therapy. Plasma dopa decarboxylase (DDC), a drug-responsive biomarker, has emerged as a promising target to guide dosing and anticipate adverse effects. However, current DDC assays rely on costly, labor intensive platforms that preclude rapid, sensitive detection in complex biological fluids. Here we report an electrochemical biosensor based on a novel ternary supramolecular interface combining MXene, Au nanorods, and p-sulfonatocalix[4]arene (pSC₄). In this design, pSC₄ serves as a supramolecular adapter to orient anti DDC antibodies via host–guest recognition, while the MXene/AuNRs hybrid provides synergistic signal amplification and contributes to reduced nonspecific adsorption. The sensor achieves a detection limit of 1.15 ng mL −1 and a linear range of 10–200 ng mL −1 in undiluted human serum, representing an approximately 5.7 fold signal amplification over single component devices. In an exploratory study of 12 subjects (6 PD patients under chronic dopaminergic therapy, 6 healthy controls), sera from PD patients showed a significantly higher ΔRct than controls (approximately threefold, P < 0.001). This work establishes an analytical proof-of-concept for DDC detection by integrating supramolecular chemistry with nanomaterials, providing a foundation for future clinical studies. Download: Download high-res image (109KB) Download: Download full-size image
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高影响因子
APPLIED SURFACE SCIENCE
·
2026
·
IF 6.6
Fenhong Song,Wanlong Chu,Ruibo Zhang,Qi Qi,Gang Wang,Long Ma,Zengqiang Tan,Jing Fan
One-step growth yields third-metal-regulated MXene@MZnCo-LDH heterostructures. • Iron incorporation lowers charge-transfer resistance and gives 2210F/g at 1 A/g. • MFZC-3 retains 66.10% at 10 A/g and 76.85% after 10,000 cycles. • AC//MFZC-3 delivers 59.6 Wh/kg at 750 W/kg within a 1.5 V window. • DFT reveals charge redistribution at the MXene/FeZnCo-LDH interface. MXene-based electrodes offer rapid electron transport but often suffer from nanosheet restacking and limited electrolyte-accessible active sites. Here, MXene@MZnCo layered double hydroxide composites (MXene@MZnCo-LDH; M = Fe, Ni, Mn, and Al) were synthesized by a one-step in situ hydrothermal route to clarify how third-metal incorporation regulates structure, interfacial electronic properties, and charge storage. Among the four composites, the Fe-containing MXene@FeZnCo-LDH composite (MFZC) showed the highest surface area of 132 m 2 /g, a more continuous mesoporous structure, and lower charge-transfer resistance. After optimizing the MXene feed amount, MFZC-3 achieved 2210 F/g at 1 A/g, retained 66.10% of its capacitance at 10 A/g, and maintained 76.85% of its initial capacitance after 10,000 cycles. Kinetic analysis revealed that the charge-storage behavior arose from the combined effects of diffusion-limited and capacitive processes, while the capacitive fraction gradually increased with increasing scan rate. First-principles calculations revealed interfacial charge redistribution between MXene and FeZnCo-LDH. The asymmetric AC//MFZC-3 cell sustained 1.5 V operation, delivered 59.6 Wh/kg at 750 W/kg, and retained 73.53% of its initial capacitance after 10,000 cycles, indicating that third-metal regulation and interfacial coupling can improve MXene/LDH-based supercapacitor electrodes. Download: Download high-res image (280KB) Download: Download full-size image
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高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2026
·Vol. 37
·期 26
·2049
·
IF 3.2
Zhang Pu,Zhang Yijiao,Wang Xinhuan,Wang Yanming,Zhang Xiaoliang,Mu Jingbo,Zhang Xiliang,Wu Chunxia
With their distinctive merits of high power density and prolonged cycle life, supercapacitors have emerged as a compelling subject of research for advanced energy storage applications. To address the limitations of individual components in supercapacitor electrodes, such as MXene restacking and the poor conductivity of MnO 2 , a ternary MXene@WS 2 /MnO 2 heterostructure was rationally designed. This distinctive configuration suppresses layer restacking, thereby allowing a greater proportion of surface atoms to participate in electrochemical reactions and providing optimized pathways for the movement of ions and charge carriers. The fabricated MXene@WS 2 /MnO 2 electrode showed a high specific capacitance of 824.7 F g −1 at 5 mV s −1 , and it held 87.6% of its capacitance after 5000 charge–discharge cycles. Beyond this, an asymmetric supercapacitor built with activated carbon as the electrode substrate attained an energy density of 30.6 Wh kg −1 at an applied power density of 440.7 W kg −1 . Equipped with the as-prepared cathode material, this device maintained 90.1% capacitance retention over 5000 cycles and capably drove an LED array. The present work verifies the significant prospects of a ternary heterostructure design strategy in the construction of high-performance energy storage systems.
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高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2026
·
IF 9.6
Donghai Wu,Silu Li,Guanghua Lu,Hanyu Fang,Jun Hou
Co 0.5 /Cu 0.5 -Ti 3 C 2 Tₓ achieved excellent PMS activation and APAP removal. • A synergistic radical/non-radical mechanism governed the efficient degradation process. • Co/Cu diatomic synergy enhanced PMS adsorption, electron transfer, and mutual redox cycling. • APAP degradation pathways were elucidated, confirming effective detoxification. A central challenge in heterogeneous peroxymonosulfate (PMS) activation is achieving catalysts with highly active interfacial sites to enable both efficient pollutant degradation and environmentally safe water treatment. Herein, cooperative Co/Cu dual-atom sites were anchored on Ti 3 C 2 T x MXene (Co/Cu-Ti 3 C 2 T x ). The optimized Co 0.5 /Cu 0.5 -Ti 3 C 2 T x catalyst achieved 96.9% removal of the emerging contaminant acetaminophen (APAP) within 60 min via PMS activation, markedly outperforming its single-atom analogues by 21.0–58.6%. Response surface methodology (RSM) analysis indicated that the system operated efficiently under near-neutral pH and mild conditions. Quenching experiments and electron paramagnetic resonance (EPR) analysis suggested that APAP degradation proceeded via a coupled mechanism involving contributions from both reactive oxygen species (predominantly •OH, •O 2 − , and 1 O 2 ) and high-valent metal-oxo species (HVMOS). Density functional theory (DFT) calculations revealed that the synergistic interaction between Co/Cu sites enhanced PMS adsorption, improved electron transfer efficiency, and accelerated the redox cycles between Co 0 /Co 2+ and Cu + /Cu 2+ , thereby cooperatively promoting the activation of PMS. Based on the identification of intermediates, the degradation pathway of APAP was proposed to involve hydroxylation of the benzene ring, ring-opening, deacetylation, and ultimately oxidative degradation. The biotoxicity of the treated effluent decreased, confirming the effectiveness and environmental safety of the process. These findings advance the mechanistic understanding of bimetallic PMS activation and present a viable approach for the remediation of water containing refractory emerging contaminants. Download: Download high-res image (148KB) Download: Download full-size image
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PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Siyu Chen,Congcong Hao,Mingzhe Cai,Shuaining Cheng,Zhongxin Wang,Ao Wang,Teng Wang,Junbiao Chen,Chenyang Xue
Using PAN as the substrate, a uniform and dense nanofiber membrane was prepared via electrospinning. It features structural stability, lightweight flexibility, and compatibility with sensor integration without compromising racquet performance. • The component design aligns with the principles of functional membrane modification. Doping MXene and PDA@BaTiO₃ into the PAN substrate achieves synergistic enhancement, with 130 mg identified as the optimal doping concentration, providing a basis for membrane performance optimization. • The membrane exhibits outstanding performance: sensors based on the PAN substrate membrane demonstrate a sensitivity of 13.74 V/N and a response time of 1.2 ms. At 10 Hz and 1.5 N, the output voltage reaches 78.42 V, enabling real-time sensing and aligning with the multifunctional application focus in membrane science. • The PAN-based piezoelectric membrane showed no damage or performance degradation after 5000 cycles, meeting long-term usage requirements and highlighting the reliability of functional membrane applications. Accurate capture of table tennis stroke data provides crucial support for personalized training and skill enhancement. However, existing visual monitoring systems struggle to simultaneously detect stroke force and impact location due to interference from ambient lighting and shooting angles, creating a core bottleneck in intelligent table tennis training. To this end, this study innovatively proposes an integrated flexible piezoelectric sensor solution. Utilizing polyacrylonitrile (PAN) as the substrate, a PAN/MXene/PDA@BaTiO₃ piezoelectric composite film was prepared via electrospinning technology. An integrated design was adopted, where an 8-channel piezoelectric sensor array was constructed on the front side of the racket, and a signal acquisition and wireless transmission module were integrated on the back side, enabling real-time and accurate capture and transmission of hitting signals. Experimental results indicate that the composite membrane exhibits optimal piezoelectric performance at a PDA@BaTiO₃ doping concentration of 130 mg, achieving a sensitivity of 13.74 V/N with a response time of only 1.2 ms. It maintains excellent mechanical stability even after 5000 cycles of load testing. The integrated racket demonstrated outstanding dynamic sensing capabilities in both ball-bouncing and rally tests. This research not only provides a novel technical approach for table tennis training but also lays a technological foundation for flexible sensing technology in the field of smart sports. Download: Download high-res image (128KB) Download: Download full-size image
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高影响因子
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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产品关联
DOI
高影响因子
CARBON
·
2026
·
IF 12.7
Yuxin Chen,Yunfan Yang,Chunhui Wang,Shiting Wu,Ding Zhang,Zhaoyun Lin,Fengmei Guo,Yingjiu Zhang,Yuanyuan Shang,Anyuan Cao
The increasing trend towards miniaturization and portability in electronic devices spurs the development of lightweight, efficient, and flexible materials for electromagnetic interference (EMI) shielding. MXene (Ti 3 C 2 T x ) is an ideal EMI shielding material due to its high conductivity and two-dimensional structure, but it tends to stack easily, which limits its EMI shielding effectiveness (SE). Herein, we prepared a structurally adjustable composite film using a simple and environmentally friendly roller infiltration combined with freeze-drying method. A continuous single-walled carbon nanotube (SWCNT) film was introduced as the conductive skeleton, and freeze-drying was employed to regulate the internal structure of the composite film, which effectively mitigated the self-stacking of MXene. The limited load-bearing capacity of SWCNT film and the increase in MXene concentration jointly modulated the internal structure of the composite film changed from “large pores sparsity” to “small pores density”. Interestingly, compared to the dense film formed by vacuum drying (59 dB, 2.08 × 10 4 dB·cm 2 ·g -1 ), the film prepared by freeze-drying exhibited a honeycomb-like porous structure. When the porosity of the prepared composite film was about 59.2%, the film achieved a significant EMI SE of up to 90 dB and a specific SE of 4.63 × 10 4 dB·cm 2 ·g -1 . It also demonstrated excellent flexibility and good thermal management performance, with the surface temperature reaching 66.1°C at a voltage of 3 V, showing significant potential in aerospace and wearable electronic applications.
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）