APPLIED SURFACE SCIENCE
·
2024
·
IF 6.3
Zhihua Zhao,Zijie Su,Chunhua Zheng,Guixin Jin,Lan Wu
Given the considerable harm that NO 2 poses to the environment and human health, developing reliable NO 2 detection sensors is crucial. Herein, a flexible, multifunctional sensor was successfully synthesized through hydrothermal and the wet impregnation methods using an elastic PU yarn as the substrate. This sensor, named Au/VTe 2 /Ti 3 C 2 T x –PU, was characterized via X-ray diffraction, X-ray photoelectron spectroscopy, and scanning electron microscopy to analyze its structure, chemical valence states, and micromorphology. At room temperature (23 °C), the sensor demonstrated an exceptionally high response to NO 2 gas, with a response value of 1.72 at 50 ppm as well as low response and recovery time of 33 and 38 s. Additionally, testing of the strain performance of Au/VTe 2 /Ti 3 C 2 T x –PU showed that this flexible sensor exhibits high strain sensitivity, excellent repeatability, and durability, making it suitable for detecting subtle human movements. Overall, the synthesized sensor is in considerable advantages in terms of both gas-sensing performance and tensile performance, exhibiting broad application prospects in human motion and health monitoring.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Debin Cai,Shuai Wu,Zhen Tian,Li Guo,Yanzhong Wang
The self-assembled aerogels are considered as an efficient strategy to address the aggregation and restacking of Ti 3 C 2 T x MXene nanosheets for high-performance supercapacitors. However, the low mechanical strength of the MXene aerogel results in the structural collapse of the self-standing supercapacitor electrode materials. Herein, a low-cost melamine sponge (MS) absorbed different cations (H + , K + , Mg 2+ , Fe 2+ , Co 2+ , Ni 2+ and Al 3+ ), serves as a carrier and crosslinker for loading MXene hydrogel induced by the absorbed cations on the skeleton surface and the pores of MS, resulting in the high loading mass MXene aerogels with high mechanical strength. The experimental results show that the Mg-Ti 3 C 2 T x @MS aerogel exhibits the maximum area capacitance of 702.22 mF cm −2 at 3 mA cm −2 , and the area capacitance is still 603.12 mF cm −2 even at 100 mA cm −2 , indicating the high rate capability with a capacitance retention of 85.89 %. It is worth noting that the constructed asymmetric supercapacitor with activated carbon achieves high energy densities of 104.53 μWh cm −2 and 93.87 μWh cm −2 at 800 μW cm −2 and 7999 μW cm −2 , respectively. Furthermore, the asymmetric supercapacitor shows the high cycling stability with 90.2 % capacity retention after 10,000 cycles. This work provides a feasible strategy to prepare Ti 3 C 2 T x MXene aerogels with large layer spacing and high strength for high-performance supercapacitors.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
RARE METALS
·
2024
·
IF 9.6
Li Zhao-Yang,Zhao Wei-Jun,Sun Yu,Zhou Bing,Feng Yue-Zhan,Liu Chun-Tai
The pressing demand for ultrathin and flexible shields to counter electromagnetic interference (EMI) has sparked interest in Ti 3 C 2 T x MXene materials due to their exceptional electrical conductivity, tunable surface chemistry, and layered structure. However, pure Ti 3 C 2 T x MXene films often lack the mechanical properties required for practical engineering applications, and traditional reinforcement methods tend to reduce electrical conductivity. This work demonstrates an effective strategy to enhance the alignment and densely packed layered structure of Ti 3 C 2 T x MXene films by regulating the acidity and alkalinity of Ti 3 C 2 T x MXene aqueous solutions. This approach simultaneously improves mechanical strength and electromagnetic interference shielding effectiveness (EMI SE). Compared with original Ti 3 C 2 T x MXene films, MXene films modified with ammonia solution (NH 3 ·H 2 O) via OH − show a significant improvement in tensile strength (27.7 ± 1.9 MPa). Meanwhile, MXene films treated with hydrochloric acid (HCl) via H + reach an even higher tensile strength of 39 ± 1.5 MPa. Moreover, the EMI SE values of the treated MXene films increase significantly, each reaching 66.2 and 58.4 dB. The maximum improvements in EMI SE values for the acid- and alkali-treated samples are 17.9% and 4%, respectively. In conclusion, the simultaneous enhancement of mechanical strength and EMI shielding efficacy highlights the potential of acid- and alkali-treated Ti 3 C 2 T x MXene films for applications in ultrathin and flexible EMI shielding materials. Graphical abstract
✓ 已验证
产品关联
DOI
高影响因子
FOOD CHEMISTRY
·
2024
·
IF 8.5
Li Zhang,Chao Li,Yue Chen,Shaobin Li,Xue Wang,Fengbo Li
L-tryptophan (L-Trp) is crucial for human metabolism, and its imbalance or deficiency can lead to certain diseases, such as insomnia, depression, and heart disease. Since the body cannot synthesize L-Trp and must obtain it from external sources, accurately monitoring L-Trp levels in food is essential. Herein, a nanocomposite film based on polyoxometalate (P 2 Mo 17 V), Ti 3 C 2 T x MXene , and chitosan (Cs) was developed through a green electrostatically mediated layer-by-layer self-assembly strategy for electrochemical detection of L-Trp. The composite film exhibits fast electron transfer and remarkable electrocatalytic performance for L-Trp with a wide linear range (0.1–103 μM), low limit of detection (0.08 μM, S/N = 3), good selectivity, reproducibility, and repeatability. In milk sample, the recoveries of L-Trp were from 95.78% and 104.31%. The P 2 Mo 17 V/Cs-Ti 3 C 2 T x electrochemical sensor not only provides exceptional recognition and detection capabilities for L-Trp but also shows significant potential for practical applications, particularly in food safety and quality control .
✓ 已验证
产品关联
DOI
PubMed
高影响因子
POLYMER COMPOSITES
·
2024
·Vol. 45
·期 10
·9196-9208
·
IF 4.8
Ningmin Duan,Yong Li,Zhenyu Shi,Jilai Wang,Chengpeng Zhang,Xuefeng Tang,Guilong Wang
Nowadays, it is still a huge challenge to predict the interlaminar shear strength (ILSS) of three-phase carbon fiber reinforced polymer (CFRP). Herein, the three-phase micromechanical model is innovatively constructed to predict the ILSS of CFRP, and the conception of new matrix is proposed by establishing a connection between the third phase and the matrix, which effectively solves the problem of uneven distribution of the third phase. To verify the accuracy of the micromechanical model, the Ti 3 C 2 T x MXene/CFf/epoxy composites were fabricated by the co-blending, layer-by-layer assembly and hot-pressing technology, and the finite element simulation analysis was also performed based on the micromechanical model. The results show that the micromechanical model possesses high accuracy. Specifically, the experimental value of ILSS of the composite with 1 wt% Ti 3 C 2 T x MXene content is 52.12 MPa, and the errors of simulation value (56.64 MPa) and theoretical prediction value (58.69 MPa) are 8.67% and 12.61% MPa, respectively. Besides, the detailed fracture mechanism of the composite is presented based on the fracture morphology and simulation results. It is believed that this work will provide more possibilities for the prediction of the interlaminar shear performance of three-phase composites. Highlights A novel micromechanical model is used to predict the ILSS of three-phase composite. The accuracy of the micromechanical model is verified by simulation and experiment. The main failure form of the Ti 3 C 2 T x MXene/CFf/epoxy composite is matrix broken. The micromechanical model of the three-phase composites has high accuracy.
✓ 已验证
产品关联
DOI
高影响因子
Nanoscale
·
2024
·Vol. 16
·期 9
·4811-4825
·
IF 5.8
Menghan Guo,Wenqing Wang,Bin Zhai,Jingtao Li,Liran Zhang,Jingchun Li,Kexin Luo,Rui Wang
Flammability feature of textiles is a big underlying risk causing fire disasters. The fabrication of reliable fire resistant and quick fire warning fabrics is imperative but challenging. Herein, three types of early fire-warning polyester fabrics, namely, FPP@AM-X, FPP@PM-X and FPP@AX-M1, with good flame retardant and piezoresistive sensing performance were developed by fabricating polyethyleneimine (PEI), ammonium polyphosphate (APP), phytic acid (PA) and MXenes onto phosphorus-containing flame retardant polyethylene terephthalate (FRPET) via polydopamine (PDA) mediated layer-by-layer self-assembly. Owing to the improved thermoelectric properties of MXenes, FPP@A5-M1 exhibited a maximum thermoelectric voltage of 0.59 mV at a temperature difference of 130 °C and can provide an ideal cyclic early fire warning response within 4 s. In addition, due to the synergistic flame retardant effect of MXenes and APP in the coating layer, FPP@A5-M1 could be self-extinguished within 2 s after ignition and the value of peak heat release ratio and total smoke production decreased by 41.9% and 30.4%, respectively. Besides, the MXene-based hybrid coated fabric can detect the movement of human fingers and elbows, illustrating its potential application in piezoresistive tension sensing. This work provides a new route to designing and developing multi-functional and smart fire protection fabrics.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Ziyi Li,Jia Xiong,Hang Song,Shuchang Liu,Yufei Huang,Yangqiang Huang,Geoffrey I. N. Waterhouse,Ziyun Wang,Yu Mao,Zhiwu Liang,Xiao Luo
To enhance the photocatalytic efficiency of ZIF-67 (Zeolitic Imidazolate Framework-67), we integrated it with Ti 3 C 2 T x MXene through in-situ synthesis and assessed the effects of different MXene concentrations on photocatalytic activity. We identified ZIF-67/Ti 3 C 2 T x MXene as the optimal catalyst (denoted as ZT-450), yielding CO, CH 4 , and H 2 at 62.7, 6.7, and 7.3 μmol g −1 , respectively. The CO productive rate achieved by ZT-450 exhibits a substantial enhancement, outperforming both ZIF-67 and Ti 3 C 2 T x by factors of 16.1 and 4.8, respectively. After introducing Ti 3 C 2 T x in ZIF-67, CO 2 adsorption ability achieves 127.90 μmol g −1 , much higher than those of pure ZIF-67 and Ti 3 C 2 T x . Combining Density Functional Theory (DFT) calculations, we established that introducing Ti 3 C 2 T x in ZIF-67 facilitates rapid electron transfer and improves light absorption, CO 2 activation. In-situ DRIFTS measurements of photocatalytic CO 2 reduction reaction (CO 2 RR) on ZIF-67/Ti 3 C 2 T x MXene composite were employed to reveal the emergence of intermediates such as *COOH, *CHO, *OCH 3 , etc ., and elucidate the mechanism accordingly. This research contributes to the advancement of photocatalytic CO 2 RR, offering insights into applying Ti 3 C 2 Tx MXene in photocatalysis.
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2024
·
IF 5.1
Xukang Han,Yuanhang Zhang,Jinhu Hu,Jiao Liu,Mingliang Ma,Yuhao Feng,Xiyao Wang,Guoxu Sun,Wei Gao,Yonglei Chi,Zihan Guo
With the advancement of wireless communication and electronic equipment , microwave absorption materials (MAMs) have more and more broad applications in related fields. Ti 3 C 2 T x -MXene with unique two-dimensional structure and excellent dielectric properties is often used as a precursor of nano-TiO 2 , which is a potential MAMs. Carbon nanofibers , as a one-dimensional material, have great electrical conductivity and can form interconnected three-dimensional conductive networks. In this study, Ti 3 C 2 T x -MXene was prepared by in-situ HF etching method, and further combined with the benefits of Co, Ce metals, and carbon nanofibers. Co/CeO 2 /TiO 2 /CNFs were prepared via a facile technique for electromagnetic microwave (EM) absorption, exhibiting excellent EM absorption performance due to the synergistic effects of dielectric and magnetic properties . The minimum reflection loss (RL min ) and effective absorption bandwidth (EAB) reache −63.35 dB (11.2 GHz) and 3.6 GHz (9.5–13.1 GHz), with a thickness of only 2.35 mm and a filling rate of 30 wt%, while the maximum EAB reaches 5.4 GHz (12.4–17.8 GHz) with a thickness of 1.82 mm, covering nearly the entire Ku band. By offering a novel strategy to the creation of brand-new, high-performance MAMs based on 1D carbon nanofibers with dielectric/magnetic synergy, this work is believed to support the development of upcoming MAMs.
✓ 已验证
产品关联
DOI
高影响因子
CHINESE JOURNAL OF CHEMISTRY
·
2025
·
IF 5.5
Xiao Liu,Xiang Yuan,Zhike Si,Haixia Liao,Lihong Wu,Yongzhu Yan,Yongxin Qian,Gengping Wan,Guizhen Wang
Comprehensive Summary Combining magnetic materials with high dielectric MXene has been proven to be an effective method to construct superb electromagnetic protective materials as they can introduce interface polarization and collaborate dielectric-magnetic loss mechanism. However, the application of such hybrid structure is constrained by the obvious instability of MXene at acidic, basic, and high-temperature environments. Herein, inspired by the great advantage of unique “hard shell and soft core” protective structure of natural coconuts, polydopamine (PDA)@Co 3 O 4 /Ti 3 C 2 T x (M)/polytetrafluoroethylene (PTFE) composite was fabricated for durable electromagnetic protective application. In this structure, the antioxidant PDA and chemically inert PTFE serve as a robust protective layer analogous to a “coconut shell”, effectively encapsulating the Co 3 O 4 /Ti 3 C 2 T x core, which functions as the primary additive for electromagnetic wave attenuation. The PDA@Co 3 O 4 /M/PTFE composite demonstrates a reflection loss (RL) value of −59.12 dB and an effective absorption bandwidth (EAB) of 6.72 GHz. It also exhibits electromagnetic shielding effectiveness of up to 27.67 dB and an absorption efficiency of 94.12%. Furthermore, the composite shows excellent environmental stability under acidic, basic, and sunlight exposure conditions, along with outstanding hydrophobic and flame-retardant properties. In conclusion, the PDA@Co 3 O 4 /M/PTFE has significant potential to satisfy electromagnetic protective need of electronic systems, aerospace, and defense industries under harsh conditions.
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Yiming Wang,Jin Chen,Jianye Shi,Jing Zhang,Yuzhao Ma,Xiaofeng Yang,Yanjun Li
The integration of microscopic material designs and macroscopic structural layouts offers unlimited potential for developing advanced electromagnetic wave (EMW) absorbers. Herein, a pyrolysis-based strategy is reported for the hybridization of Ti 3 C 2 T x MXene nanosheets to achieve relaxation processes and high-density magnetic coupling at the nanoscale. The stratified structure of Ti 3 C 2 T x /Fe-MOF considerably amplifies the active contact region with electromagnetic radiation, thereby inducing numerous reflection/scattering phenomena. Through pyrolytic transformation, derived nanoparticles including Fe, C, Fe 3 O 4 , and TiO 2 establish continuous metal–carbon and carbon-oxide interfaces below 50 nm. Consequently, the heterogeneous interfaces formed between these components establish a harmonious electromagnetic coupling network, where interfacial polarization from numerous heterojunctions promotes charge accumulation and relaxation processes, converting electromagnetic energy into thermal energy. Remarkably, findings indicate that this composite material demonstrates a minimum reflection loss (RL min ) of −47.05 dB when the thickness reaches 1.8 mm. Additionally, this investigation broadens the spectrum of design strategies for premium microwave absorption materials through systematic interface engineering and thermally-controlled phase conversion.
✓ 已验证
产品关联
DOI
高影响因子
Analytical Methods
·
2025
·
IF 2.6
Jinping Tang,Yuhai Wang,Chunxu Wang,Ziwei Yu,Jin Wang
Surface-enhanced Raman scattering (SERS) has emerged as a powerful analytical tool for trace molecular detection, enabling identification of target analytes through their characteristic vibrational fingerprints. Its high sensitivity, selectivity, and non-destructive detection capabilities make it extremely valuable in fields such as biological detection, food safety, and environmental detection. Currently, metal carbonitride (MXene) as an emerging two-dimensional material has become a hot topic in the field of SERS. In this work, by combining the advantages of bimetallic nanoparticles and MXene nanosheets, Ni/Ag nanoparticles with different proportions were modified on monolayer MXene nanosheets through chemical reduction and transmetallation reactions for the rapid detection of thiram. The evaluation of the SERS performance of the MXene–Ni/Ag composite substrate for the Raman reporter molecule mercaptobenzoic acid (MBA) demonstrates a high SERS performance factor (SPF) of 8.2 × 106, and a low detection limit of 10−10 M. Also, for the detection of the pesticide thiram, the substrate exhibits high sensitivity and reliable quantitative analysis capabilities, retaining detectable spectral features even at concentrations down to 10−9 M. Meanwhile, the substrate also exhibits a low relative standard deviation (RSD) value in reproducibility and maintains good stability over a certain period. Ni/Ag bimetallic nanoparticles provide high SERS activity, while MXene nanosheets effectively concentrate target molecules through their strong adsorption capacity. These results indicate that MXene–Ni/Ag composite substrates can serve as a highly effective SERS platform for sensitive and reliable environmental monitoring.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
MICROCHEMICAL JOURNAL
·
2025
·
IF 5.1
Xiaochan Zhao,Ruoyu Zhang,Qian Li,Yufan Liu,Zhibo Zhang,Yongfu Zeng,Kaoqi Lian,Lianfeng Ai
To improve the pre-treatment efficiency of fluoroquinolones (FQs) in food testing, a novel functionalized MXene, Ti 3 C 2 T x /SiO 2 -NH 2 , was synthesized via electrostatic interactions between Ti 3 C 2 T x and aminopropyl-modified silica (SiO 2 -NH 2 ). Used as a dispersive solid-phase extraction (d-SPE) adsorbent, it enabled a new UPLC-MS/MS method for nine FQs in pork. Compared to pristine Ti 3 C 2 T x and SiO 2 -NH 2 , the composite had a larger adsorption capacity, achieving a specific surface area of 251.28 m 2 /g. Adsorption was dominated by ionic interactions and followed a monolayer model. Optimized d-SPE conditions: 20 mg adsorbent, 2 min extraction (pH 7), 2 mL 5 % ammoniated methanol desorption (1 min). Notably, extraction in hexane integrated with hexane degreasing, cutting total pretreatment time to <10 min. Under optimal conditions, linearity for FQs was 0.5–100 ng/mL (r 2 > 0.99). Detection limits (DLs) and quantitation limits (QLs) were 0.034–0.553 μg/kg and 0.114–1.845 μg/kg, respectively. Recoveries were 85.80–105.70 %, with intra-day (1.06–7.53 %) and inter-day (1.88–12.27 %) RSDs. After 7 cycles, six FQs still had 71.57–84.92 % recoveries. Ti 3 C 2 T x /SiO 2 -NH 2 is a promising d-SPE adsorbent, and the UPLC-MS/MS method offers rapid, sensitive FQs monitoring in pork.
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）