ACS Applied Nano Materials
·
2025
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IF 5.5
Yanqiao Ding,Yinpei Luo,Chun Huang,Shifu Gu,Bingsheng Du,Yingchun Dong,Yijie Shi,Hangyu Liu,Mati Horprathum,Wei Hu,Yong He
Achieving highly sensitive detection of ppb-level NO2 at room temperature remains a significant challenge for metal oxide semiconductors (MOS) due to their low chemical activity. Herein, a synergistic sensitization strategy is proposed, combining highly conductive MXene with high specific surface area mixed MOS. In this work, NiO–SnO2 is synthesized by thermal annealing using Ni–Sn–BTC (BTC: benzene-1,3,5-tricarboxylic) as a template. The mesoporous structure and high conductivity of NiO–SnO2/Ti3C2Tx provide a variety of channels for gas diffusion and carrier transfer. Gas sensor tests reveal that the fabricated NiO–SnO2/Ti3C2Tx sensor exhibits a 4.33-fold improvement in response (Rg/Ra = 70.86 to 200 ppb) to 200 ppb of NO2 at room temperature (RT, 25 °C) compared to NiO–SnO2. In addition, the sensor also maintains a low detection limit (50 ppb), superior selectivity (response ratio >30), good repeatability (RSD: 2.3%), and long-term stability at RT and 60% RH (RH: relative humidity). The outstanding sensing properties are mainly attributed to the functionalized surfaces and multiple-type heterojunctions formed by NiO, SnO2, and Ti3C2Tx phases, which significantly improve gas adsorption and electrical transduction function of the sensor.
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高影响因子
VACUUM
·
2024
·
IF 3.8
Chunjiao Liu,Xiaodong Li
MXene can generate high-temperature pulses (HTP) by the physical/chemical coupling effect under laser irradiance and is a good initiator for laser ignition. The main obstacle in the application on laser ignition of MXene based materials is the incomplete oxidation and reduced energy output resulting from the inert TiO 2 passivation layer. In this study, we proposed an efficient approach to significantly enhance the thermal oxidation and energy release under laser irradiance by decorating hydrophobic 1H,1H,2H,2H-perfluorodecyltriethoxysilane (PFTE). The CFx produced by the decomposition of PFTE under laser irradiance can react with Ti atoms on the surface of MXene to prevent the formation of the oxide layer. This process releases a large amount of heat and completely oxidizes MXene. As expected, some rutile nano-crystals are distributed on the surface of fully oxidized MXene and the energy output of MXene/PFTE composite is 6.1–8.3 kJ/g which is much higher than pristine MXene. The mechanism of the thermal oxidation process is proposed to explain the enhanced energy output of the MXene/PFTE by thermal analysis and time-resolved emission spectrum (TR OES). Furthermore, the MXene/PFTE membrane significantly enhanced the laser ignitibility of 2,4,6,8,10,12-(hexanitrohexaaza)cyclododecane (CL-20) reducing the laser intensity and shortens the ignition time.
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高影响因子
ADVANCED ENGINEERING MATERIALS
·
2025
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IF 3.3
Yuhao Luo,Qian Zhu,Lei Cao,Lanlan Fan,Feng Gu,Shixian Xiong
Flexible micro-supercapacitors (FSCs), with their outstanding flexibility and low weight, offer great potential for a wide range of applications in the field of flexible electronics. Herein, the few-layer Ti 3 C 2 T x MXene hybridized with commercial PEDOT:PSS dispersion are used as ink for aerosol jet printing (AJP) to fabricate interdigitated and double-helix electrodes on 2D polyethylene terephthalate (PET) films and 1D thermoplastic polyurethane fibers, respectively. By controlling the evaporation behavior of aerosol microdroplets during the printing process, a transformation from 2D Ti 3 C 2 T x MXene nanosheets to 3D wrinkled spherical structures on the surface of the flexible substrate is achieved, which increases the accessibility of ions to the electrochemical active sites. In addition, the introduction of PEDOT:PSS as a “bridge” connecting the Ti 3 C 2 T x MXene-wrinkled spheres not only enhances the electronic conductivity within the electrode but also improves the bending stability of the electrode. Consequently, the optimized MXene/PEDOT:PSS-based planar and fiber-architectured FSCs exhibit excellent areal capacitance and flexible stability. This work highlights the significant potential of AJP technology in developing electronic devices with fascinating functionalities on various flexible substrates.
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高影响因子
ACS Sensors
·
2025
·
IF 9.1
Mingyue Zhou,Bolong Xu,Dong Wang,Zhaofeng Wu,Lu Zhang,Sheng Cai
Acetone, a key biomarker for metabolic processes, and its excessive levels can cause ketosis or even ketoacidosis, posing significant risks to human health. Therefore, real-time acetone detection is crucial for noninvasive health monitoring. Ti3C2Tx-based sensors demonstrated considerable potential for detecting VOC gases but often face issues with sensitivity and environmental stability. In this work, a flower-like Ti3C2Tx anchored with MoS2 quantum dots (F–Ti3C2Tx/MoS2) was proposed for the first time to achieve accurate acetone detection even under high humidity conditions. The unique flower-like morphology significantly increased the surface area of Ti3C2Tx and amplified its electron scattering effects. MoS2 modification not only reduced the content of Ti defects but also formed a passivation layer, providing a novel approach to address the inherent oxidation issue of Ti3C2Tx. Moreover, the p–n heterojunction between F–Ti3C2Tx and MoS2 promoted charge separation, enabling high-performance acetone detection. Compared with intrinsic Ti3C2Tx, a 4.83-fold enhancement in response to 25 ppm of acetone was achieved by using a F–Ti3C2Tx/MoS2 sensor with an ultralow detection limit of 163.2 ppb and a rapid response/recovery time (26.0 s/33.7 s). When integrated into a portable breath analyzer, the sensor demonstrated accurate acetone monitoring under atmospheric conditions, underscoring its potential for real-time and noninvasive health diagnostics.
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DOI
PubMed
高影响因子
CARBON
·
2025
·
IF 11.6
Tianyu Zhang,Yang Hong,Xiaolei Shi,Hongchao Zheng,Jingyang Li,Wenjing Wei,Kai Cui,Yang Li,Wei Qin,Xiaohong Wu
Developing lightweight packaging materials with high radiation protection efficiency for MOSFET radiation hardening is highly significant for enhancing the radiation resistance of MOSFETs in space radiation environments. This work presented lightweight Bi-GdF 3 /Ti 3 C 2 T x aerogel (BGTA) with high electron radiation protection efficiency (RPE) through self-assembly and directional freezing. Subsequently, a radiation hardened MOSFET was obtained by packaging with BGTA. The resulting BGTA packaging material demonstrates excellent electron protection efficiency (92.23 %) compared to conventional Al packaging materials (23.80 %) at the same areal density. Meanwhile, the BGTA-packed MOSFET shows outstanding radiation resistance, exhibiting a much smaller negative threshold voltage drift value of 0.10 V compared to the Al-packed MOSFET (1.17 V). The electron shielding mechanism of BGTA was analyzed and elucidated by FASTRAD simulation on a micro scale. Due to the synergistic effect of the honeycomb aerogel structure and Bi/GdF 3 functional filler in BGTA aerogel, the incident electrons are effectively attenuated, thereby reducing radiation damage to the SiO 2 layer of the MOSFET and improving the radiation resistance of the MOSFET. Theoretical calculation results substantiate that the BGTA-packed MOSFET exhibits lower threshold voltage shifts and trapped charges. This work presents a lightweight and highly efficient MXene aerogel packaging material for MOSFET radiation hardening.
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高影响因子
CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Jingyu Song,Wentao Xu,Jinlin Li,Yongqian Shen,Yingying Shen,Rong Wang,Xueyan Du
A significant challenge metal nanoparticles (NPs) used for electromagnetic wave (EMW) is the precise regulation of the interplay between dielectric and magnetic losses through multi-scale interface engineering, as well as achieving a wide broadband for absorbing materials. In this study, Ti 3 C 2 T x MXene/Ni composites were successfully synthesized in situ via a simple and mild solvothermal method. The influence of the size of Ni NPs on the EMW absorption performance was investigated. The results demonstrate that the size of Ni NPs could be regulated by varying the Ti 3 C 2 T x MXene content, resulting in a synergistic balance between dielectric and magnetic losses, significantly improving wideband impedance matching (3.00–12.80 GHz). The Ti 3 C 2 T x MXene/Ni composites achieved a minimum reflection loss (RL m ᵢ n ) of −50.70 dB at 3.76 GHz, with an effective absorption bandwidth (EAB) of 3.20 GHz. Characterization results reveal that size-dependent permeability dispersion and dielectric relaxation behavior synergistically optimize both impedance matching and loss mechanisms. This study provides a novel design strategy for enhancing the electromagnetic attenuation performance of MXene-based composites.
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高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2025
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IF 5.4
Wangyan Lv,Yingchao Yue,Ming Nie,Changchun Zhao,Jia Wei,Jianjun Cheng
Although Ti 3 C 2 T x exhibits promising potential for corrosion protection, its susceptibility to oxidation significantly limits the practical applications. In this study, 3-aminopropyl-triethoxysilane (APTES) was employed to covalently graft onto Ti 3 C 2 T x surface, thereby preserving its layered structural integrity. Based on density-functional-theory calculations, we systematically elucidated the interaction mechanisms between amino functional group and various surface terminations of Ti 3 C 2 T x at the electronic structure level. Experimental results demonstrate that as-prepared APTES@Ti 3 C 2 T x hybrid significantly enhances the anti-corrosion performance of the epoxy coating. Electrochemical tests revealed that after 30 days of immersion in a 3.5 wt.% NaCl solution, APTES@Ti 3 C 2 T x /EP composite coating maintained a high low-frequency impedance modulus (|Z| f=0.01 Hz ) of 10 7 Ω·cm², which was one order of magnitude higher than that of the pure epoxy coating. Furthermore, the wet adhesion strength of composite coating reached 4.82 MPa, representing a 145.9% improvement compared to the control group. This study not only confirms the effectiveness of the APTES encapsulation strategy in improving the stability of MXene but also provides a new approach for designing long-scale, superior corrosion-resistant composite coatings.
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高影响因子
LANGMUIR
·
2025
·
IF 3.9
Yongxin Hu,Xiaoyu Mao,Changhua Li,Songlin He,Chuan Fu,Yi He
The enhancement of dispersion stability and interfacial compatibility of nanomaterials within aqueous epoxy matrices represents a pivotal strategy for augmenting the protective performance and corrosion resistance of coatings. In this study, Ti3C2Tx Mxene functionalized with sodium alginate (TSA) was obtained by introducing sodium alginate (SA) into Ti3C2Tx Mxene (T) to improve the corrosion resistance of aqueous epoxy coatings (EP). The dispersion stability of TSA in aqueous medium was quantitatively assessed via ζ-potential measurements, revealing a significant enhancement in stability compared to the reference material T. The long-term stability of TSA/EP composite coatings was systematically evaluated via electrochemical impedance spectroscopy (EIS). Notably, the charge transfer resistance (Rc) remained at 5 × 107 Ω·cm2 after a 60-day accelerated aging test, exhibiting exceptional electrochemical durability. Compared with pure EP coating, this value is improved by 2 orders of magnitude. The improvement is attributed to the fact that active −COOH and −OH groups on the surface of SA enhance the interactions between T nanosheets and EP matrix. Specifically, these functional groups form hydrogen bonds or chemical bonds at the interface. Such interfacial bonding mechanisms enhance the compatibility and interfacial adhesion between T and the EP matrix. These conclusions are further supported by manual scratching experiments. The accessibility and greenness of SA provide a simple and environmentally friendly way of thinking for modifying T.
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PubMed
高影响因子
SENSORS AND ACTUATORS A-PHYSICAL
·
2026
·
IF 5.1
Yanpei Xu,Shangzhe Lv,Jiangrong Hou,Qi Wang
Constructs a MoS 2 /Ti 3 C 2 T x composite humidity-sensitive material. • Fabricates flexible LC sensors using inkjet printing on PET. • Enables wireless passive, non-contact humidity monitoring without built-in power. This study reports an inkjet-printed wireless passive LC humidity sensor incorporating a MoS 2 /Ti 3 C 2 T x composite as the humidity-sensitive layer. Flower-like MoS₂, multilayer Ti 3 C 2 T x MXene, and MoS 2 /Ti 3 C 2 T x composites were prepared via hydrothermal synthesis, selective etching, and in situ growth, respectively, and integrated with an inkjet-printed LC resonant circuit on a polyethylene terephthalate (PET) substrate. Structural and chemical characterization using SEM, EDS, FTIR, XRD, and XPS confirmed that MoS₂ nanoflowers were uniformly distributed on the accordion-like multilayer Ti 3 C 2 T x framework, forming a nanocomposite with abundant hydrophilic functional groups and strong interfacial interactions. These features provided numerous adsorption sites for water molecules, facilitated molecular diffusion, and enhanced humidity-dependent dielectric modulation. Following optimization with a 5 mg/mL MoS 2 /Ti 3 C 2 T x dispersion, the sensor exhibited a resonance frequency shift of 85 MHz over a relative humidity (RH) range of 20%–90%, achieving a sensitivity of 1.2943 MHz/%RH. The device also demonstrated low hysteresis of approximately 5%, rapid response and recovery times of 16 and 40 s, respectively, good device-to-device reproducibility, and stable output during both a 50 h short-term test and a 10-day long-term test. The enhanced sensing performance is attributed to the synergistic effects of the high-surface-area MoS 2 nanoflowers, conductive layered Ti 3 C 2 T x channels, and hydrophilic surface terminations. This work presents a promising materials and device strategy for highly sensitive, low-cost, non-contact humidity monitoring. Download: Download high-res image (160KB) Download: Download full-size image
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高影响因子
ELECTROCHIMICA ACTA
·
2026
·
IF 5.6
Yu-hang Ma,Yi-feng Ding,Liu-hong Yang,Jing Wen,Ke-fan Duan,Ge Dai,Feng-Feng Mo,Jia-feng Wang
The simultaneous monitoring of lactate and potassium ions (K⁺) in blood is critical for the management of critical conditions like crush syndrome, yet it remains a significant challenge. Herein, we present a novel integrated microfluidic electrochemical sensor for the dual-mode detection of these biomarkers. The sensor leverages a synergistic composite of Ti 3 C 2 T x MXene and electrodeposited gold nanoparticles (AuNPs) to create a highly sensitive sensing interface. The microfluidic chip, fabricated with polymethylmethacrylate (PMMA), incorporates two independent detection chambers functionalized with lactate oxidase (LOx) and a valinomycin-based ion-selective membrane, respectively. This design enables specific and parallel detection from a single sample. The fabricated sensor demonstrated excellent performance. In a KCl solution, the sensor exhibited a linear range of 1 μM to 10 mM and a low LOD of 1 μM. In the 1 × PBS configuration of lactate solution, the sensor showed a linear range of 10 μM to 16 mM and an LOD of 10 μM. When applied to the analysis of rat plasma samples, the sensor showed strong correlation with a commercial hematology analyzer, confirming its accuracy and practical utility. This work provides a promising platform for point-of-care testing, offering a fast, convenient, and reliable method for simultaneous biomarker monitoring.
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高影响因子
ACS Applied Materials & Interfaces
·
2026
·
IF 7.8
Jiaxuan Li,Yunhao Wu,Xiaoxu Yang,Jiawei Shang,Jianling Li
Ti3C2Tx materials, as an emerging class of two-dimensional layered carbides, have garnered significant attention due to their unique layered structure and distinctive surface chemistry. However, their theoretical specific capacity remains underutilized owing to heavy stacking and functional group constraints. To address these challenges, this study proposes an approach: introducing Mn ions into the interlayers of Ti3C2Tx followed by phosphorization treatment, successfully yielding MnP@Ti3C2Tx composites. The introduced nanosized MnP particles uniformly distribute between the layers and on the surface of Ti3C2Tx. This not only effectively expands the interlayer spacing but also provides a three-dimensional, ultrafast electron conduction network, significantly enhancing lithium-ion migration capability. 8MnP@Ti3C2Tx serves as a representative example, exhibiting exceptionally high reversible capacity (508.55 mA h g–1 at 0.15 A g–1) and outstanding cycling stability (338.54 mA h g–1 after 1000 cycles at 0.15 A g–1) in a half-cell system. X-ray diffraction and non in situ transmission electron microscopy analysis directly confirmed the highly reversible transformation reaction mechanism during lithiation/delithiation. Further data indicate that the incorporation of MnP significantly enhances interfacial charge transfer and reduces the lithium-ion diffusion energy barrier. This research not only reveals the intrinsic mechanism behind the atomic-scale performance enhancement but also provides a new approach for developing next-generation high-energy-density, long-life anode materials for lithium-ion batteries.
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PubMed
高影响因子
JOURNAL OF POWER SOURCES
·
2026
·
IF 8.4
Xu Jin,Shufan Feng,Yanxun Cheng,Baogang Zhao,Jingyun Ma,Jixun Xie,Jiaoxian Yu
Transition metal carbides (M x C y ) have recently emerged as promising candidates for sodium-ion battery (SIB) anodes, among which Mo 2 C stands out due to its metallic conductivity and favorable Na + migration characteristics. Nevertheless, substantial volume expansion and severe particle agglomeration during cycling impair structural integrity and cycling stability, thereby hindering its practical application. To tackle these intrinsic limitations, we synthesized morphology-modulated Mo 2 C/MXene composites by adjusting the mass ratio of Mo source to MXene precursors. One of these composites forms a 3D hierarchical porous framework, in which Mo 2 C nanocrystals are uniformly anchored on conductive Ti 3 C 2 T x MXene sheets, and is named Mo 2 C / MXene-S. MXene acts as an effective electron-transport network and mechanical buffer to alleviate volume fluctuation of Mo 2 C and suppress structural pulverization. Benefiting from the synergistic effect, the Mo 2 C/MXene-S anode exhibits reversible capacities of 406.5/143.6 mA h g −1 at 0.1/2 A g −1 and retains 296.1 mA h g −1 at 1 A g −1 after 1500 cycles. Kinetic analysis shows that Na + storage is dominated by surface-controlled pseudocapacitance. Density Functional Theory (DFT) calculations demonstrate that the composite optimizes Na + adsorption and reduces the diffusion energy barrier. The Na 3 V 2 (PO 4 ) 3 //Mo 2 C/MXene full cell displays stable cycling, offering an effective strategy for developing high-performance SIB anodes.
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高影响因子
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