Surfaces and Interfaces
·
2025
·
IF 6.3
Chen Li,Dongting Ye,Jiangbo Tan
Recombination layer engineering is a key enabler in monolithic perovskite/silicon tandem solar cells, where charge extraction and optical management must be simultaneously optimized. In this study, we introduce a composite Ti 3 C 2 T x MXene/indium zinc oxide (IZO) interlayer as a tunable recombination layer to enhance both electrical and optical performance in two-terminal tandem architectures. The interlayers were fabricated by integrating few-layer Ti 3 C 2 T x MXene flakes into an IZO matrix, forming a conductive yet transparent network. Systematic tuning of MXene content revealed that the sample with 10 vol% (MX-10) offered a low resistivity (∼1.69 mΩ·cm), and high optical transmittance. EIS and TRPL analyses demonstrated improved charge recombination dynamics and enhanced carrier extraction. When implemented in monolithic tandems, the MX-10-based device achieved a PCE of 26.67%, outperforming the ITO-based control device (24.40%), with improved J SC and FF. Long-term stability testing over 1000 hours under continuous illumination revealed only 9.5% degradation in MX-10 devices, confirming the material's promise for practical applications. Our findings highlight the synergistic role of MXene and IZO in constructing an efficient, transparent, and stable interfacial layer for next-generation tandem photovoltaics.
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JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2025
·Vol. 36
·期 13
·1-11
·
IF 2.8
Wang Zhenyang,Zhang Hui,Chen Zhixing,Zhang Xingyue,Zhou Yuanming,Mei Fei
The recent attention accorded to perovskite light-emitting diodes (PeLEDs) can be attributed to their exceptional optoelectronic characteristics. In this paper, the perovskite emissive layer (EML) modified by two-dimensional material Ti 3 C 2 T x MXene was explored with the aim of improving the morphology of perovskite films and the luminescence efficiency of PeLEDs. A doping concentration of 0.2 mM Ti 3 C 2 T x yielded optimal results for the PeLEDs, with a maximum luminance of 8317 cd/m 2 and a maximum current efficiency (CE) of 6.63 cd/A, representing a 200 and 103% enhancement, respectively, in comparison to the reference device lacking Ti 3 C 2 T x . It has been evidenced that doping Ti 3 C 2 T x MXene plays the role of enhancing the morphology of perovskite films and passivating the defects present in these films. Furthermore, Ti 3 C 2 T x facilitates the exciton recombination efficiency, enhances the radiative recombination of the emissive layer and thus improves the optoelectronic efficiency of the PeLEDs. This work presents novel concepts for the utilization of MXene in PeLEDs.
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Nano Energy
·
2019
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IF 15.548
Yina Yang,Zherui Cao,Peng He,Liangjing Shi,Guqiao Ding,Ranran Wang,Jing Sun
Strain sensors featured with high sensitivities and large ranges of linear responses are currently under urgent needs. Herein, we present a spontaneously formed Ti 3 C 2 T x /graphene/PDMS layered structure, which can be divided into two layers when being stretched: a Ti 3 C 2 T x dominated brittle upper layer and a flexible graphene/PDMS composite bottom layer. The balance between the destruction and maintenance of the conductive pathways through the synergetic motion of the upper and bottom layers ensure a high and steady gauge factor of the senor in a wide strain range (e.g., gauge factors of 190.8 and 1148.2 in strain ranges of 0–52.6% and 52.6–74.1%, respectively). The Ti 3 C 2 T x /graphene/PDMS layered structure based strain sensor is also featured with a low detection limit (~0.025%), a high linearity (R 2 > 0.98), a high cycling stability (over 5000 cycles), and an accurate monitoring of full-range human motions. Different breathing patterns in yoga are distinguished to demonstrate the practicability of the sensor.
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CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Dongdong Li,Junzhi Li,Haoran Liu,Guangshe Li,Gennadi Milinevsky,Lili Wang,Wei Han
Optimizing electrode structure, reducing the proportion of inactive substances, and fabricating a flexible free-standing electrode without fluid collection are desirable to enhance the energy density , fast charging, and cycling stability of flexible batteries. In this study, we utilized the biological characteristics of Aspergillus niger to synthesize one-dimensional (1D) Sb 2 S 3 nanoparticle composite N-doped C ribbons. Subsequently, vacuum filtration was employed to blend and assemble these 1D composite C ribbons with Ti 3 C 2 T x nanosheets into a free-standing flexible anode for Sodium-ion batteries (SIBs). Using 1D C ribbons can effectively inhibit the stacking of 2D MXenes, thereby facilitating the penetration of Na + into Sb 2 S 3 @NCR through the interlamellar pores. Ex-situ X-ray photoelectron spectroscopy analyses indicated that the MXene layers were not only physically confined but also effectively suppressed polysulfide diffusion through chemical confinement. Consequently, the energy density and cycling stability of the Sb 2 S 3 @NCR composite electrode were enhanced. The Sb 2 S 3 @NCR/MXene||CGPFE||NVP@CNF full battery, consisting of an Sb 2 S 3 @NCR/MXene anode, free standing NVP@CNF cathode, and PVDF-HFP fiber quasi-solid-state polymer electrolyte prepared via electrospinning, achieved 1,000 stable cycles at a current density of 1 Ag −1 . Additionally, the flexible quasi-solid-state bag-type battery could power an LED lamp at a bending angle of 0°–180°.
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ACS Applied Materials & Interfaces
·
2026
·
IF 7.8
Lidong Wang,Yongyan Sun,Yuting Sun,Changbin Zhang,Guixi Wang,Junnan He,Yan Zhao,Ming Li
Photodynamic therapy (PDT) holds promise for oral squamous cell carcinoma (OSCC) but is limited by the tumor microenvironment─specifically hypoxia, elevated glutathione (GSH), and the lack of tumor-selective photosensitizer activation. To overcome these barriers, we developed a GSH-activated nanoplatform Cu-TCPP(Zn)/Ti3C2Tx for fluorescence imaging-guided synergistic photodynamic/chemodynamic therapy (PDT/CDT). The system is constructed from two-dimensional Cu-TCPP(Zn) MOF nanosheets, where Cu2+ and Zn2+ completely quench the fluorescence and PDT activity of TCPP and surface-anchored Ti3C2Tx MXene. In the TME, overexpressed GSH reduces Cu2+ to Cu+ and abstracts Zn from the Zn–N4 complex, triggering nanocomposite disintegration to restore fluorescence, activate PDT, and simultaneously deplete GSH to reduce antioxidant defense. The resulting Cu+ catalyzes a Fenton-like reaction with endogenous H2O2 to generate •OH for CDT, while Ti3C2Tx acts as a catalase-like nanozyme, decomposing H2O2 into O2 to alleviate hypoxia, promote charge transfer, improve the utilization efficiency of photogenerated electrons, and enhance PDT efficacy. In vitro, the platform showed excellent biocompatibility and GSH-responsive activation, inducing 41.21% apoptosis in CAL-27 cells under 660 nm laser irradiation, significantly outperforming controls. In vivo, the nanocomposite accumulated efficiently in tumors via the EPR effect, suppressed tumor growth, and exhibited no observable systemic toxicity. This work provides a TME-responsive theranostic platform that integrates tumor-specific activation, GSH depletion, hypoxia alleviation, and enhanced ROS generation for precise and effective OSCC treatment.
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高影响因子
Nanoscale
·
2026
·
IF 5.1
Fanjie Shi,Henghan Dai,Ning He,Yang Guo,Yufan Shen,Huifang Wang,Hai Xu,Yuzhen Wang,Gengzhi Sun
Ti3C2TX MXene with good mechanical strength, metallic conductivity and ultrahigh volumetric capacitance is a promising candidate for developing advanced fibers toward the applications of fibrous supercapacitors (FSCs); however, the weak interlayer interaction, random stacking during coagulation and unsuitable channels for ion transport impose crucial difficulties in continuous spinning strong MXene fibers with desirable charge storage ability. Herein, we propose a coaxial spinning strategy accompanying with spontaneous radial densification for the simultaneous achievements of both improved fiber mechanical strength and charge storage capability. The intercalation of sodium alginate (SA) in core (S/M) expands interlayer spacing and produces suitable paths for ion diffusion, while the presence of SA/graphene oxide (S/G) sheath generates radial compression during dehydration because of capillary force, enhances stress transfer within fiber, and avoid short circuit in FSC. The optimized S/M@S/G fiber exhibits a tensile strength of 238 MPa and a volumetric capacitance of 906 F cm−3 at 1 A cm−3. The assembled FSCs provide a capacitance of 153 F cm−3 together with an energy density of 13.6 mWh cm−3. Notably, owing to the improved mechanical properties, FSCs can be weaved into glove and provide power for an electronic watch.
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TALANTA
·
2026
·
IF 6.7
Chenglong Chen,Qiaoxia Zhang,Xiajuan Wang,Ran Miao,Tiesheng Shi,Qingyun Liu
To resolve the conflict between multidimensional interferences derived from complex matrices and the stringent requirements for trace-level detection sensitivity, a novel electrochemical aptasensor was constructed for highly sensitive kanamycin (KANA) detection based on a split aptamer engineering strategy. Ag–Ti 3 C 2 T x MXene, synthesized via in-situ reduction of silver nanoparticles onto the surface of two-dimensional MXene nanosheets, is employed for electrode decoration. This composite possesses abundant binding sites for aptamer 1 (Apt1) immobilization and exhibits outstanding catalytic performance in the reduction of H 2 O 2 . Signal acquisitions were performed under reductive potential conditions, endowing the sensor with superior anti-interference capability. Upon KANA addition, aptamer 2 (Apt2) can assemble into a ternary structure with the target and Apt1, leading to the displacement of cDNA and triggering a signal-down response. Under optimized conditions, the fabricated aptasensor presents a broad linear range of 1∼20000 nM with a limit of detection (LOD) of 0.12 nM, and exhibits excellent selectivity, reproducibility, and strong stability. In addition, the aptasensor demonstrates satisfactory recovery rates in real sample analysis, indicating its great potential for practical applications. The combination of Ag–Ti 3 C 2 T x MXene nanocomposite and split aptamer engineering technology provides a feasible strategy for highly sensitive detections of trace-level antibiotic residues in complex food matrices.
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CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Shuo Li,Jing Zhu,Longkun Wu,Yasong Han,Ningning Zhao,Bin Li,Shaaban M. Shaaban,Lei Dai,Ling Wang,Zhangxing He
Introduced Co 2+ increases the structural stability of δ-MnO 2 and enlarges the interlayer spacing, promoting ion diffusion. • δ-MnO 2 @Co/TCT further improves the electrical conductivity, ameliorates the agglomeration problem and increases the electrochemical reaction active area. • Synergistic improvement of electrochemical performance through the strategy of ion doping and introduction of conductive materials, Zn//δ-MnO 2 @Co/TCT full cell with 1000 stable cycles at 1.5 A g -1 . δ-MnO 2 is considered a highly promising cathode material for aqueous zinc-ion batteries (AZIBs). However, its practical application is hindered by two critical issues: delayed transport kinetics and insufficient structural stability. Therefore, a synergistic strategy involving Co 2+ doping and composite coating with Ti 3 C 2 T x MXene (TCT) nanosheets was designed and implemented to achieve effective doping of the δ-MnO 2 lattice with Co and to ensure uniform loading of the active component onto the TCT substrate surface, ultimately leading to the successful fabrication of the δ-MnO 2 @Co/TCT composite material. First, the incorporation of Co 2+ as interlayer pillars effectively widens the interlayer spacing of δ-MnO 2 , thereby enhancing its structural stability and enabling faster ion embedding/de-embedding. Second, the TCT conductive substrate effectively mitigates the agglomeration of δ-MnO₂@Co, significantly increasing the electrochemical reaction area. Benefiting from the unique composite structure design, the Zn//δ-MnO 2 @Co/TCT full cell exhibits significantly optimized electrochemical performance. The assembled cell delivers a high specific capacity of 239.5 mAh g −1 at 0.5 A g −1 , and maintains outstanding cycling stability over 1000 cycles at 1.5 A g −1 . Result indicates that comprehensive performance of cathode materials can be effectively enhanced by multilevel structural synergistic design, providing a feasible technological pathway for development of high-performance AZIBs.
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ANALYTICA CHIMICA ACTA
·
2026
·
IF 6.1
Ruoyu Zhang,Guanghua Li,Hongwei Zhang,Junfeng Zhang,Yonghuan Yan,Weijun Kang,Peng Xue,Lianfeng Ai,Kai Kang
Background Sudan dyes, as illegally added food colorants, pose significant risks to human health due to their potential toxicity and carcinogenicity. Conventional chromatographic and mass spectrometric methods for Sudan dye detection typically require labor-intensive sample pretreatment and involve substantial time and economic costs. Surface-enhanced Raman scattering (SERS) has emerged as a rapid and sensitive analytical technique; however, its application to lipophilic analytes remains challenging because of the limited affinity between hydrophobic targets and SERS-active substrates, hindering effective signal enhancement. Therefore, developing adsorption-enhanced SERS substrates for efficient enrichment and sensitive detection of hydrophobic dyes is of great significance for food safety monitoring. Results In this study, a high-performance SERS platform based on Ti 3 C 2 T x quantum dot (MQD)-AuNP assembled interfaces was developed, with preparation conditions carefully optimized to ensure stable performance. Adsorption performance was evaluated using multiple isotherm and kinetic models, demonstrating an ultrahigh adsorption capacity (>4000 mg/g). The MQD/AuNPs substrate exhibited ∼14-fold enhancement in SERS intensity compared to AuNPs alone, with excellent signal uniformity (mapping RSD < 15%) and reproducibility (RSD < 20%). The platform also showed a broad linear response range and stable signal output across repeated measurements. Using 1595 cm -1 as the characteristic peak, the method achieved a detection limit of 10 μg/kg and a quantification limit of 100 μg/kg. In chili powder, recoveries ranged from 95.2-120.5%, confirming reliable quantitative performance. Compared with conventional chromatographic methods and reported SERS approaches, this platform maintains comparable sensitivity while significantly improving detection efficiency. Significance This work establishes an adsorption-driven SERS enhancement strategy by integrating high-capacity MQDs with plasmonic nanostructures. The synergistic combination of analyte enrichment and signal amplification enables rapid and sensitive detection without increasing analytical cost. This platform provides a practical and efficient approach for on-site screening of lipophilic contaminants in complex food systems.
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ACS Applied Materials & Interfaces
·
2026
·
IF 7.8
Tibebu Shiferaw Kassa,Abdurohman Mengesha Yessuf,Ayenew Meniber Mihiretu,Minable Endaye Rass,Mohamedazeem M. Mohideen,Yong Liu
The rapid transition from 5G to 6G wireless technologies has led to a substantial increase in electromagnetic interference (EMI), posing significant challenges to device reliability, signal integrity, and human health. There is an urgent need for lightweight, flexible, and efficient absorption-dominant EMI shielding materials. In this study, we propose a rationally designed coaxial electrospinning strategy to fabricate hierarchical MXene/reduced graphene oxide/polyacrylonitrile core–shell nanofibers. This design integrates a conductive, MXene-rich core surrounded by a reduced graphene oxide/polyacrylonitrile outer shell, encouraging simultaneous optimization of electrical conductivity, impedance matching, and polarization loss to achieve superior EMI shielding performance and thermal blocking. Interestingly, when the reduced graphene oxide to MXene ratio was optimized to be 1:2, the resultant composite nanofiber revealed an EMI shielding effectiveness of 74.38 dB at X-band, a shielding efficiency of 99.99999635%, a high electrical conductivity (169.81 S·cm–1), and an outstanding specific shielding effectiveness of 2.54 × 104 dB·cm2·g–1. Additionally, the sample exhibited effective thermal insulation, with the surface temperature rising by only 41 °C after 1 min of exposure to a 75 °C heat source. These findings highlight the synergy between the high electrical conductivity of MXene, which enables strong internal reflection and ohmic loss, and the interfacial polarization of reduced graphene oxide, which fosters multiple internal reflections that enhance absorption. This optimized, absorption-dominated mechanism provides valuable guidance for designing next-generation lightweight and flexible EMI shielding materials for applications in aerospace, 5G/6G communications, and advanced electronic devices.
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高影响因子
JOURNAL OF POWER SOURCES
·
2026
·
IF 8.4
Jayandra Bushion,Nithesh Kumar Krishnan,Chih-Yu Kuo,Stalin Thambusamy,Mani Govindasamy,Gaber E. Eldesoky
Developing cost-effective and efficient bifunctional electrocatalysts is critical for sustainable hydrogen production via overall water splitting. Here, we report the rational design and synthesis of a gadolinium nitride-decorated Mxene (Gd-N/Ti 3 C 2 T x ) nanocomposite as a high-performance bifunctional electrocatalyst. The Gd-N/Ti 3 C 2 T x hybrid shows excellent activity toward both the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) under alkaline conditions. The optimized electrode exhibits low overpotentials of 315.2 mV for HER and 162.8 mV for OER at 10 mA cm −2 , with Tafel slopes of 142 and 234 mV dec −1 , respectively, indicating favorable kinetics. In a two-electrode alkaline water electrolyzer, Gd-N/Ti 3 C 2 T x achieves 10 mA cm −2 at a cell voltage of 1.74 V, outperforming individual Gd-N and Ti 3 C 2 T x electrodes. The system maintains stable operation at 10 mA cm −2 for 48 h with negligible voltage fluctuation. The enhanced performance arises from strong interfacial coupling between conductive Ti 3 C 2 T x layers and catalytically active Gd-N, which promotes rapid charge transfer, increases electrochemically active surface area, and facilitates reaction kinetics. This work demonstrates Gd-N/Ti 3 C 2 T x as an earth-abundant, durable, and efficient bifunctional electrocatalyst for overall water splitting.
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MICROCHEMICAL JOURNAL
·
2026
·
IF 5.2
Haozi Lu,Ziyi Wu,Meiqing Yang,Jifei Yang,Ye Li,Jingrui Zhang,Guangsheng Zeng,Can Hu,Wei Zhou,Song Liu
Hollow Ti 3 C 2 T x MXene nanospheres are synthesized via a sacrificial PS template to boost electroactive surface area. • The sensor achieves high AA sensing performance (0.394 μA·μM −1 , LOD 6.1 μM) covering sweat physiological concentration range. • A CNN-LSTM model is built to predict steady-state current using only 20 s transient chronoamperometric response. Real-time wearable health monitoring is frequently bottlenecked by the slow kinetic equilibrium of electrochemical sensors, which delays data acquisition and hinders high-frequency sampling. To bridge the gap between high sensitivity and rapid readout, this study presents a synergistic sensing strategy coupling hollow Ti 3 C 2 T x MXene nanospheres with a deep learning-enabled predictive algorithm for the detection of ascorbic acid (AA) in sweat. Structurally, the hollow Ti 3 C 2 T x spheres, synthesized via a sacrificial polystyrene template, provide a significantly enhanced electroactive surface area, achieving a high sensitivity of 0.394 μA·μM −1 and a limit of detection of 6.1 μM. Crucially, to resolve the trade-off between measurement accuracy and readout speed, a convolutional neural network–long short-term memory (CNN–LSTM) cascade model was constructed. The CNN–LSTM model predicted the 60 s reference current from the first 20 s transient response, reducing the effective readout time by approximately 67%. Real-sweat validation was further performed using samples collected from five volunteers after exercise, with each sample measured in triplicate. The AA concentrations calculated from the conventional 60 s current-based method ranged from 22.05 to 36.22 μM, while the CNN–LSTM-predicted concentrations showed relative errors of 3.12–11.04% compared with the conventional readout., This integration of advanced hollow nanostructures with transient-signal learning establishes a robust pathway for next-generation wearables requiring instantaneous bio-fluid analysis. Real-time wearable health monitoring is frequently bottlenecked by the slow kinetic equilibrium of electrochemical sensors, which delays data acquisition and hinders high-frequency sampling. To bridge the gap between high sensitivity and rapid readout, this study presents a synergistic sensing strategy coupling hollow Ti 3 C 2 T x MXene nanospheres with a deep learning-enabled predictive algorithm for the detection of ascorbic acid (AA) in sweat. Structurally, the hollow Ti 3 C 2 T x spheres, synthesized via a sacrificial polystyrene template, provide a significantly enhanced electroactive surface area, achieving a high sensitivity of 0.394 μA·μM −1 and a limit of detection of 6.1 μM. Crucially, to resolve the trade-off between measurement accuracy and readout speed, a convolutional neural network–long short-term memory (CNN–LSTM) cascade model was constructed. Unlike traditional methods that await steady-state current (∼60 s), this algorithm extracts deep temporal features from the initial 20 s of the transient chronoamperometric response to accurately forecast the final equilibrium signal. The model demonstrates exceptional predictive accuracy (deviation <2.8%) while reducing the detection latency by approximately 67%. Validated in human sweat samples (29.4 μM AA), this integration of advanced hollow nanostructures with transient-signal learning establishes a robust pathway for next-generation wearables requiring instantaneous bio-fluid analysis. Download: Download high-res image (117KB) Download: Download full-size image
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