SENSORS
·
2025
·Vol. 25
·期 18
·5838
·
IF 3.5
Xiu Liu,Xing Tang,Hongjun Chen,Xiang Wu,Zitong Fu,Mingyu Peng,Chenzhong Jin,Jun Guo
Given the significance of safeners and their potential to emit harmful substances into the environment, it is essential to develop suitable analytical methods for detecting these compounds. This study presents a molecularly imprinted electrochemical sensor designed for the sensitive and rapid detection of fenclorim (FM), a type of safener. Titanium carbide nanomaterials (Ti3C2Tx) were electrochemically deposited onto the glassy carbon electrode (GCE) to enhance electron transfer. Subsequently, molecularly imprinted polymers were fabricated through the electropolymerization of catechol in the presence of FM. The electrochemical behavior of each modified electrode was investigated using differential pulse voltammetry (DPV) and electrochemical impedance spectroscopy (EIS). Under optimized experimental conditions, the MIP/Ti3C2Tx/GCE sensor demonstrated a linear relationship with FM concentration ranging from 5 to 300 nM, with a limit of detection (LOD) of 1.56 nM (S/N = 3). Additionally, the sensor demonstrated excellent selectivity, stability, and reproducibility for FM detection and was successfully utilized for quantifying FM in real water samples.
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产品关联
DOI
PubMed
高影响因子
SURFACE & COATINGS TECHNOLOGY
·
2025
·
IF 6.1
Guoshuang Hua,Meng Cai,Xiaoqiang Fan,Minhao Zhu
Polyimide (PI) demonstrates exceptional thermal stability but suffers from limited wear resistance, restricting its applications in friction environments. Herein, we repot a mechanically blended Ti 3 C 2 T x MXene-PI composite coating with optimized interfacial bonding. Leveraging the exceptional mechanical properties of Ti 3 C 2 T x , the composite coating achieves remarkable performance enhancements. The experimental results reveal that the Ti 3 C 2 T x MXene-PI coating shows outstanding mechanical properties, with hardness, tensile strength, and fracture stress values of 228.7 MPa, 64.46 MPa, and 40.55 MPa, respectively. Additionally, it exhibits superior thermal stability (T g = 347.8 °C). Compared to the PI coating, the wear rate of the Ti 3 C 2 T x MXene-PI coating under low and high loads is reduced by 47.34 % and 72.03 %, respectively, and the wear width decreases by 158 μm and 209 μm. Molecular dynamics (MD) simulation results show that Ti 3 C 2 T x has a higher binding energy with PI-precursor solution (−20.4 kcal/mol). This enhancement is attributed to the robust interface interactions between the abundant functional groups on the surface of Ti 3 C 2 T x and PI, ensuring uniform dispersion of Ti 3 C 2 T x within the PI matrix and achieving effective dispersion strength. This study reveals a significant correlation between the wear resistance of Ti 3 C 2 T x -enhanced polyimide coatings and key thermal/mechanical parameters, offering new insights for the design of high-performance wear-resistant materials.
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DOI
高影响因子
NANOTECHNOLOGY
·
2022
·Vol. 33
·期 16
·165603
·
IF 3.953
Yongqin Hu,Chen Hou,Yuxia Shi,Jiamei Wu,Da Yang,Zhuili Huang,Yan Wang,Yufei Liu
Electromagnetic pollution seriously affects the human reproductive system, cardiovascular system, people's visual system, and so on. A novel versatile stretchable and biocompatible electromagnetic interference (EMI) shielding film has been developed, which could effectively attenuate electromagnetic radiation. The EMI shielding film was fabricated with a convenient solution casting and steam annealing with 2D MXene, iron oxide nanoparticles, and soluble polyurethane. The EMI shielding effectiveness is about 30.63 dB at 8.2 GHz, based on its discretized interfacial scattering and high energy conversion efficiency. Meanwhile, the excellent tensile elongation is 30.5%, because of the sliding migration and gradient structure of the nanomaterials doped in a polymer matrix. In addition, the film also demonstrated wonderful biocompatibility and did not cause erythema and discomfort even after being attached to the arm skin over 12 h, which shows the great potential for attenuation of electromagnetic irradiation and protection of human health.
研究领域:
材料科学
·
生物医学工程
·
电磁学
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DOI
高影响因子
PLASMA SCIENCE & TECHNOLOGY
·
2021
·Vol. 23
·期 11
·115403
·
IF 1.567
Weisheng CUI,Qiaolu LIN,Hongbo LI,Shuai ZHAO,Yunge ZHANG,Yifan HUANG,Shuting FAN,Yiling SUN,Zhengfang QIAN,Renheng WANG
The formation of homogeneous dielectric barrier discharge (DBD) in air is a key scientific problem and core technical problem to be solved for the application of plasmas. Here, we report the effect of two-dimensional (2D) nanomaterial Ti3C2Tx (Tx = –F, –O and/or –OH) on regulating the electrical discharge characteristics. The field emission and weak bound state property of Ti3C2Tx can effectively increase the seed electrons and contribute to the generation of atmospheric pressure homogeneous air DBD. The electron avalanche development for the uneven electrode structure is calculated, and the discharge mode transition is modeled. The comparative analyses of discharge phenomena validate the regulation of Ti3C2Tx on the discharge characteristics of DBD. The light emission capture and the voltage and current waveforms verify that the transition of Townsend discharge to streamer discharge is effectively inhibited. The optical emission spectra are used to characterize the plasma and confirm that it is in a non-equilibrium state and the gas temperature is at room temperature. This is the first exploration of Ti3C2Tx on the regulation of electrical discharge characteristics as far as we know. This work proves the feasibility of Ti3C2Tx as a source of seed electrons to form homogeneous DBD, establishing a preliminary foundation for promoting the application of atmospheric pressure non-equilibrium plasma.
研究领域:
物理学
·
材料科学
·
等离子体科学
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高影响因子
NANOTECHNOLOGY
·
2021
·Vol. 32
·期 26
·265501
·
IF 3.874
Shuxian Chen,Min Shi,Quan Xu,Jingkun Xu,Xuemin Duan,Yansha Gao,Limin Lu,Feng Gao,Xiaoqiang Wang,Yongfang Yu
Herein, Ti3C2Tx MXene/N-doped reduced graphene oxide (MXene/N-rGO) composite was employed as the electrocatalyst to construct a new electrochemical sensing platform for the determination of adrenaline (AD). The MXene/N-rGO was synthesized via a facile one-step hydrothermal method, where ethylenediamine acted as a reducing agent and N source. The doped N in rGO served as a bridge between MXene and rGO through tight hydrogen bonds. Scanning electron microscopy showed that large numbers of MXenes with accordion-like morphology were distributed on the surface of the N-rGO. The MXene/N-rGO composite displayed a synergetic catalytic effect for oxidizing AD, originating from the unique catalytic activity of N-rGO and the large surface area and satisfactory conductivity of MXene. These characteristics of composite material led to a remarkable effect on signal amplification for the detection of AD, with a wide linear range from 10.0 nM to 90.0 μM and a low detection limit of 3.0 nM based on a signal to noise ratio of 3. Moreover, the MXene/N-rGO electrode displayed good stability, repeatability, and reproducibility. Additionally, the proposed sensor was successfully applied for voltammetric sensing of AD in urine with recoveries from 97.75% to 103.0%.
研究领域:
材料科学
·
分析化学
·
生物医学工程
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DOI
PubMed
高影响因子
NANOTECHNOLOGY
·
2022
·Vol. 34
·期 10
·105707
·
IF 3.953
Xiangrui Bu,Qiang Wu,Yubin Yuan,Haiyang Wu,Weihua Liu,Xin Li,Chuanyu Han
Ethanol is a harmful volatile organic compound (VOC) for human health. Currently, zinc oxide (ZnO) is one of the most popular metal oxide semiconductors for VOCs detection but suffering from a lack of selectivity, poor response, and slow response/recovery speeds. Herein, we successfully synthesized the ZnO/Ti3C2Tx nanocomposites via a facile hydrothermal method, in which ZnO nanoparticles were uniformly grown on two-dimensional (2D) Ti3C2Tx nanosheets. As a result, the ZnO/Ti3C2Tx nanocomposites showed a significant improvement in the ethanol-sensing performance, when it compared to the pure ZnO and Ti3C2Tx samples. In particular, ZnO doped with 5 mg of Ti3C2Tx showed an ultra-high response (79) to 100 ppm ethanol, a short response/recovery time (22 s/34 s to 50 ppm ethanol), a low limit of detection (1 ppm) and a long-term stability. The excellent ethanol sensing properties are mainly attributed to the coupling effect between ZnO and Ti3C2Tx of composites. The ZnO nanoparticles are uniformly distributed on the 2D Ti3C2Tx platform, which can provide more gas adsorption sites. Simultaneously, the presence of hybrid heterojunctions further enhances the response in the sensing process.
研究领域:
材料科学
·
传感技术
·
纳米技术
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DOI
高影响因子
CERAMICS INTERNATIONAL
·
2021
·
IF 4.527
Yu Zeng,Shipeng Rao,Chenhan Xiong,Guoping Du,Zhaoyang Fan,Nan Chen
Dielectric polymer composites with conducting fillers would have great potential for diverse applications if their severe leakage loss could be addressed. In this regard, ternary composites using both ceramic and conducting materials as fillers might be an enabler for high dielectric constant and low dielectric loss. Herein, ternary composites with both Ti 3 C 2 T x MXene conducting nanosheets and CaCu 3 Ti 4 O 12 (CCTO) dielectric particles embedded in silicone rubber were studied. It was found that a ternary composite with 1.2 wt% (0.40 vol%) Ti 3 C 2 T x MXene and 12 wt% (2.58 vol%) CCTO could provide an overall superior performance that include a high dielectric constant of 8.8, low dielectric loss of less than 0.0015, good thermal stability up to 450 °C, and excellent mechanical properties with tensile strength of 569 kPa, elastic module of 523 kPa and elongation at break of 333%. The outstanding performance is attributed to the improved uniform dispersion and good interfacial compatibility of mixed fillers in the polymer matrix , suggesting ternary composites might be a better option over their binary counterparts in preparing high performance dielectric composites.
研究领域:
材料科学
·
电气工程
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DOI
高影响因子
CARBOHYDRATE POLYMERS
·
2022
·
IF 10.723
Tingrui Lin,Shuangxiao Li,Yang Hu,Lang Sheng,Xibang Chen,Xueyan Que,Jing Peng,Huiling Ma,Jiuqiang Li,Maolin Zhai
A novel agarose/Ti 3 C 2 T x -crosslinked-polyacrylamide (AG/T-PAM) double-network (DN) hydrogel is synthesized by combining heating-cooling and γ-ray radiation-induced polymerization. The AG/T-PAM DN hydrogel possesses excellent mechanical properties with 4250% stretchability, and good adhesion to different substrates, such as an adhesive strength of 1148 kPa to copper at 30 °C. The resultant hydrogel also exhibits excellent tensile and compression sensing properties due to the variation of conductive network within hydrogel. The flexible and wearable strain sensor composed of the AG/T-PAM DN hydrogel presents rapid response to strain withstand 1000 cycles, and can monitor various movements of human body with a high sensibility. The AG/T-PAM DN hydrogel-based strain sensor will have broad application in large-scale strain detection scenarios requiring high sensitivity and adhesion.
研究领域:
材料科学
·
生物医学工程
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DOI
PubMed
高影响因子
IEEE SENSORS JOURNAL
·
2026
·
IF 4.5
Yuanyuan Zhou,Song Li,Qingyang Xiao
The reliable detection of ammonia (NH3) at room temperature (RT) remains a critical challenge for applications in industrial safety and agricultural Internet of Things (IoT), where sensors must combine high sensitivity with robust stability against environmental interference. To address this, we engineered a stable chemiresistive heterojunction by integrating zinc phthalocyanine (ZnPc) nanoparticles with highly conductive two-dimensional (2D) Ti3C2Tx MXene nanosheets. Comprehensive characterization, including scanning electron microscopy (SEM), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS), confirms the successful formation of an intimate interface, which facilitates effective charge transfer. The optimized sensor demonstrates a response of ~25% to 100 parts per million (ppm) NH3 at 25°C, a fivefold enhancement over pristine MXene, along with excellent selectivity against common volatile organic compounds (VOCs). Crucially, the device exhibits outstanding repeatability and maintains stable performance across a wide relative humidity (RH) range (20-80% RH), directly addressing key practical deployment hurdles. The enhanced performance is attributed to the synergistic combination of specific NH3 adsorption at ZnPc molecular sites and efficient charge modulation through the conductive MXene network. This work provides a viable and manufacturable strategy for fabricating selective, stable, and room-temperature-operating gas sensors ready for integration into real-world monitoring systems.
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DOI
高影响因子
LANGMUIR
·
2026
·
IF 4.4
Yongxin Hu,Haitao Ji,Liangjun Li,Xiaoyu Mao,Changhua Li,Songlin He,Chuan Fu,Yi He
The development of high-performance anticorrosion coatings through sustainable methods is of critical importance. However, the practical applications of Ti3C2Tx MXene are often quite limited. This study proposes a fabrication strategy aimed at developing an intelligent, self-healing composite coating. Specifically, porous covalent organic frameworks (COFs) were grown in situ on amino-modified Ti3C2Tx nanosheets using a Lewis acid molten salt method combined with a room-temperature synthesis approach. This carrier possesses a high specific surface area (199.65m2·g–1), enabling the high loading of corrosion inhibitors (PESA/BTA). When this substance is added to water-based epoxy resin, the resulting coating establishes a “passive protection + active repair” mechanism. It is worth noting that at a pH of 2, the controlled-release agent reaches its maximum efficacy within 180 min. Electrochemical tests demonstrated outstanding durability, with the low-frequency impedance modulus (|Z|0.01 Hz) remaining at 3 × 108 Ω·cm2 after 60 days of exposure to 3.5 wt % NaCl. This value is 2 orders of magnitude higher than that of pure epoxy. Furthermore, the coating demonstrates rapid self-healing capabilities (impedance recovery to 5 × 105 Ω·cm2 within 72 h) and superior tribological properties (friction coefficient of 0.06). This study presents a scalable method for manufacturing durable MXene-based coatings.
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DOI
PubMed
高影响因子
CERAMICS INTERNATIONAL
·
2026
·
IF 6
Chenghong Zhang,Kang Qiu,Jusen Guo,Linchen Hu,Chao Sun,Yikang Qiang,Wei Ding,Wei Wang,Jialiang Luo,Guoxing Pan,Zhigao Sheng
Achieving precise orientation control of two-dimensional (2D) materials remains a significant challenge for tailoring their electromagnetic functionalities. Herein, we report, for the first time, the successful fabrication of in-plane oriented Ti 3 C 2 T x MXene/epoxy (EP) composites via a high-intensity horizontal-rotating magnetic field. By systematically varying the magnetic field intensity from 0 to 6 T, the orientation degree of Ti 3 C 2 T x nanosheets can be continuously and precisely tuned, reaching a remarkably high value of 0.74. This process establishes a direct and quantitative correlation between the magnetic field strength and the resulting structural alignment. The magnetically induced orientation leads to a dramatic enhancement in key electromagnetic parameters, including complex permittivity, electrical conductivity, attenuation constant, and impedance optimization, all of which exhibit quantifiable relationships with the applied field. Consequently, this controlled alignment translates into extraordinary functional performance. The optimally aligned composite demonstrates a remarkable 5-fold improvement in GHz microwave absorption and a significant 44.9% enhancement in THz shielding efficiency compared to its non-oriented counterpart. This work pioneers a magnetic-field strategy to manipulate 2D microstructure, establishing quantitative structure-property relationships and paving the way for next-generation electromagnetic absorption and shielding composites.
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产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2026
·
IF 6.6
Yanxiang Liu,Xiaoying Yu,Qingyuan Zhao,Hai Xu,Xingchao Zhang,Xiao-Feng Wang
π-Conjugated PAH@Ti 3 C 2 T x heterojunctions enable direct interfacial charge transfer for efficient solar-driven H 2 evolution. • Conductive Ti 3 C 2 T x shortens charge pathways, reduces transport resistance, and promotes photocarrier separation and utilization. • Ti 3 C 2 T x coupling regulates pentacene excited-state dynamics, favoring long-lived charge-separated states for enhanced H 2 evolution. Although photocatalytic hydrogen evolution shows great potential for environmental sustainability and solar-to-chemical energy conversion, its practical implementation remains hindered by low efficiency, limited catalyst selectivity and incomplete understanding of the reaction mechanisms. Herein, we report the rational construction of polycyclic aromatic hydrocarbon (PAH)-decorated Ti 3 C 2 T x MXene organic–inorganic heterojunctions for enhanced visible-light-driven photocatalytic H 2 production. Comprehensive characterizations, including UV–vis absorption spectroscopy, photoluminescence spectroscopy, electrochemical impedance spectroscopy, transient absorption spectroscopy, photocurrent measurements, and density functional theory calculations, were employed to elucidate the structure–property relationship and interfacial charge-transfer mechanism at the molecular level. Transient spectroscopic analysis further suggests that interfacial electron transfer in pentacene@Ti 3 C 2 T x competes with the intrinsic intersystem crossing process, thereby reducing triplet-state-related relaxation and enhancing charge utilization efficiency. This work clarifies the molecular-structure-dependent charge-transfer mechanism in PAH/MXene photocatalysts and provides a rational design strategy for developing efficient organic semiconductor-based systems for visible-light-driven hydrogen production. Download: Download high-res image (159KB) Download: Download full-size image
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高影响因子
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