JOURNAL OF ALLOYS AND COMPOUNDS
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2022
·
IF 6.371
Ubaid Khan,Yijia Luo,Ling Bing Kong,Wenxiu Que
MXenes are 2D materials dominated by carbides and nitrides , whose properties can be tailored for a wide range of applications. Here, generic method was adopted to etch MAX phases through direct redox coupling strategy between the A element and the cation of Lewis acid molten salt, allowing us to anticipate the MAX phase reactivity in molten salt. Fluorine free Ti 3 C 2 MXenes with halogen terminals, such as -Cl, -Br and -I, were synthesized using the molten salts synthesis method. Ti 3 C 2 Cl 2 , Ti 3 C 2 Br 2 and Ti 3 C 2 I 2 exhibit distinct charge-discharge rates and pseudocapacitive like behaviors in 3 M H 2 SO 4 electrolyte, with significant specific capacity of 92 C g −1 , 29 C g −1 and 63 C g −1 , respectively, corresponding to retention rates of 32%, 85.22% and 49.1%, respectively, after 10,000 cycles. The exceptional supercapacitive performances of the Ti 3 C 2 MXenes as electrodes with aqueous electrolytes are attributed to the high electrochemical activity of Cl, Br or I. This study demonstrates the efficacy of the Lewis-acidic-melt etching technique for fine tuning the surface chemistry and hence extending the applications of MXene family.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
ACS Nano
·
2024
·
IF 15.8
Zhaoxi Liu,Yapeng Tian,Jian Yang,Song Xu,Qingyong Tian,Pengfei Yan,Buxing Han,Qun Xu
Regulating the surface termination of a confined space to achieve ultrafast ion transport remains an ongoing challenge. Two-dimensional (2D) MXenes possess adjustable structures and interlayer spacing, which provide an ideal platform for in-depth investigation of ion transport in 2D confined space; however, the strong interaction of the negatively charged terminations in MXenes hinders the transport of intercalated cations. In this work, we proposed a strategy that precisely regulates the surface modification of Ti3C2Tx MXene with the weak polarity of boron atoms (SCB-MXene) via the distinct effect of supercritical CO2. This not only could effectively substitute −OH termination in MXene but also can prevent the loss of −O active sites, and then, both ultrafast ion transport and high volumetric capacitance can be achieved simultaneously. Ideally, a volumetric capacitance up to 742.7 C cm–3 at 1000 mV s–1 for the SCB-MXene film as pseudocapacitive materials that provides an energy density of 66.3 Wh L–1 even at an ultrahigh power density of 132.5 kW L–1 is obtained, which is a prominent record of energy density and power density reported up to now. Subsequently, it can be used in large-scale energy storage and conversion devices.
研究领域:
材料科学
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电化学
·
纳米科技
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能源存储
·
功能材料
·
界面化学
✓ 已验证
DOI
高影响因子
ACS Applied Nano Materials
·
2023
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IF 5.9
Qiang Xue,Wenqiao Meng,Qing Fang,Jinyuan Zhu,Kaisong Zhang
Over the last decade, thin-film nanocomposite (TFN) membranes have been extensively utilized in desalination and wastewater treatment. The most reported nanochannels in the TFN membranes lack sufficient observational evidence. We conducted a systematic study on the TFN membrane that incorporated two-dimensional (2D) MXene nanosheets and provided evidence that nanovoids existed in the polyamide layer surrounding the nanosheets. The nanovoids functioned as nanochannels for water, which led to a significant increase in membrane permeance by 2.8 times compared to the blank membrane. The Na2SO4 rejection of the MXene polyamide membrane is as high as 96.4% and has obvious advantages in seawater desalination. The size of the nanochannels was correlated with the quantity, size, and spreadability of MXene nanosheets. Larger water nanochannels could be formed if there is a considerable amount and size of nanosheets, and they were evenly distributed. After being subjected to a sustained pressure environment, the nanochannels remained intact and the membrane maintained its excellent permeance across varying pressures. Our work could offer a perspective on the generation of internal nanochannels in the TFN membrane and optimize nanochannels to provide better desalination performance.
研究领域:
材料科学
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环境工程
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化学工程
·
纳米技术
✓ 已验证
DOI
高影响因子
Journal of Nanoelectronics and Optoelectronics
·
2021
·Vol. 16
·期 11
·1834-1843
·
IF 0.961
Yuan Wenfeng,Yang Jia,Yuan Mengmeng,Fan Jiacheng,Li Ke,Wang Libo,Zhou Aiguo
In this paper, a novel conductive hydrogel was made by a one-pot method at 60 °C for 12 hours in one step without any cross-linking agent. The hydrogel was composited of Ti3C2 MXene nano slices, poly(vinyl alcohol) (PVA) and poly-N-(2-hydroxyethyl acrylamide)
(PHEAA), named as MXene/PVA/PHEAA hydrogel. Compared with previous methods to make MXene hydrogel, this one-pot method was facile and fast. The as-prepared hydrogel was highly stretchable with the breaking elongation of 1300% and tensile strength of 1.1 MPa. MXene nano sheets dispersed in
the hydrogel formed a three-dimensional conductive network, which increased the strength and conductivity of the gels. The conductivity changed with the gel’s deformation and could be applied as strain sensors. The strain sensors made of the hydrogels were highly stretchable, bendable
and flexible with the response range of 1%–300% and a large gauge factor of 4.23. The sensors can be applied to detect human movements such as finger bending, leg bending, water drinking. The MXene/PVA/PHEAA hydrogel made by this facile one-pot method is promising to make strain sensors
for health detection.
研究领域:
材料科学
·
生物医学工程
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2023
·
IF 15.1
Guojun Chang,Lingjun Zeng,Lan Xie,Bai Xue,Qiang Zheng
Harsh freezing and high-humidity environments lay down paramount bottlenecks for the utilization prospect of polymeric electromagnetic interference (EMI) shielding materials. Herein, ultrathin and flexible multifunctional EMI shielding MXene/Ag nanowires/poly(3, 4-ethylene dioxythiophene):polystyrene sulfonate (MXene/AgNWs/PEDOT:PSS) composite coatings were fabricated via the facile drop-casting of MXene/AgNWs/PEDOT:PSS mixture dispersion and subsequent hydrophobic spraying modification. Profited by the superior electrical conductivity of both polymer host and filler guests, MXene/AgNWs/PEDOT:PSS coatings exhibit the preeminent EMI shielding effectiveness (SE) of 31.5 dB at a rather small thickness of 10 µm, far surpassing that of most the reported polymer-based EMI shielding composites at the similar thickness. Moreover, MXene/AgNWs/PEDOT:PSS coatings also hold excellent electro/photo-thermal transition ability and fascinating water repellency, which ensures their normal application on cold and damp conditions. Interestingly, the intensive interlocking effect of 1 D AgNWs and 2 D MXene allows the wonderful interfacial adhesion and mechanical durability of MXene/AgNWs/PEDOT:PSS coatings. This study provides a valuable insight into the design and construction of multifunctional polymeric coatings for EMI shielding of high-power and high-frequency electronics in cold and high-humidity environments.
研究领域:
材料科学
·
电子工程
✓ 已验证
DOI
高影响因子
Advanced Electronic Materials
·
2024
·Vol. 11
·期 2
·2400265
·
IF 5.3
Jiaao Yu,Hui Luo,Sihai Lv,Zhihui Wang,Fu Chen,Yongzhi Cheng,Xiangcheng Li
The development of novel materials with high-efficiency microwave absorption is crucial for mitigating the adverse impacts of electromagnetic pollution. In this study, MXene and FeNi Prussian blue analogs (PBA) are assembled onto a melamine foam using self-assembly and in situ growth technique. Subsequently, magnetic carbon foam, comprising FeNi alloys, TiN and carbon with various morphologies, is synthesized via carbothermal reduction reaction. The surface morphology electromagnetic properties are significantly influenced by the pyrolysis temperature. The results revealed that the magnetic carbon foam composite demonstrated an effective microwave absorption bandwidth of 4.72 GHz at a thickness of only 1.5 mm, with a minimum reflection loss of −24.83 dB at 1.3 mm. The outstanding microwave absorption performance can be attributed to the 3D conductive network formed by N-doped carbon, as well as the contributions from polarization loss, magnetic loss, and suitable impedance matching. Furthermore, the corresponding absorber coating demonstrated a maximum reduction value of radar cross-section (RCS) by 13.16 dB m 2 . This research offers novel insights for the development of lightweight and efficient low-filled electromagnetic composite for broadband microwave absorption.
研究领域:
材料科学
·
电磁学
✓ 已验证
DOI
高影响因子
JOURNAL OF NANOBIOTECHNOLOGY
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2022
·Vol. 20
·期 1
·1-12
·
IF 9.429
Yu Rongjun,Xue Jian,Wang Yang,Qiu Jingfu,Huang Xinyi,Chen Anyi,Xue Jianjiang
In this work, Ti 3 C 2 T x MXene was identified as efficient nanozyme with area-dependent electrocatalytic activity in oxidation of phenolic compounds, which originated from the strong adsorption effect between the phenolic hydroxyl group and the oxygen atom on the surface of Ti 3 C 2 T x MXene flake. On the basis of the novel electrocatalytic activity, Ti 3 C 2 T x MXene was combined with alkaline phosphatase to construct a novel cascading catalytic amplification strategy using 1-naphthyl phosphate (1-NPP) as substrate, thereby realizing efficient electrochemical signal amplification. Taking advantage of the novel cascading catalytic amplification strategy, an electrochemical biosensor was fabricated for BCR/ABL fusion gene detection, which achieved excellent sensitivity with linear range from 0.2 fM to 20 nM and limit of detection down to 0.05 fM. This biosensor provided a promising tool for ultrasensitive fusion gene detection in early diagnosis of chronic myelogenous leukemia and acute lymphocytic leukemia. Moreover, the manageable catalytic activity of MXene broke a path for developing nanozymes, which possessed enormous application potential in not only electrochemical analysis but also the extensive fields including organic synthesis, pollutant disposal and so on. Graphical Abstract
研究领域:
生物医学工程
·
纳米材料科学
·
癌症早期诊断
✓ 已验证
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
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2022
·
IF 5.431
Zhenqiang Ye,Chao Ji,Tao Yu,Rong Sun,Xiaoliang Zeng,Bingyang Cao
Thermal interface materials (TIMs) are indispensable materials in thermal management, and Al 2 O 3 -based TIMs are most widely used in thermal managements. Surface modification is an effective method to improve Al 2 O 3 dispersion in matrix, thereby increasing the maximum filler loading. However, traditional surfactants hardly promote the interfacial heat-transfer on the premise of the same filler loading. In this work, we proposed an electrostatic self-assembly strategy to functionalize the surface of Al 2 O 3 particles with MXene sheets to enhance the interfacial heat-transfer between fillers and silicone rubber (SR). To validate the effectiveness of MXene, we compared the Al 2 O 3 -MXene-SR TIM with Al 2 O 3 -graphene-SR TIM and Al 2 O 3 -SR TIM under the same Al 2 O 3 loading in the aspects of mechanical properties and thermal properties. Though MXene could increase the viscosity and hardness, the negative influence of MXene is much weaker than that of graphene. Nevertheless, the positive impact of MXene is more significant. First, it can reinforce the mechanical strength. The experiment showed the breaking tensile strength of the Al 2 O 3 -MXene-SR TIM is 0.117 MPa, higher than that of the Al 2 O 3 -graphene-SR TIM (0.082 MPa) and the Al 2 O 3 -SR TIM (0.07 MPa). Second, the thermal conductivity of TIMs improves a lot after MXene coating. The thermal conductivity of Al 2 O 3 -MXene-SR TIM is 3.4 W·m −1 ·K −1 , with the matrix/filler mass ratio of 100:1600, which is 30% higher than that of the Al 2 O 3 -SR TIM (2.6 W·m −1 ·K −1 ) and 21% higher than that of Al 2 O 3 -Gr-SR TIM (2.8 W·m −1 ·K −1 ). Whereas the Al 2 O 3 loading keeps the same and the MXene fraction is only about 1.16 vol‰, the increment of the thermal conductivity is mostly due to the improvement of interfacial heat-transfer via MXene. The temperature cycling test and aging test implied that the Al 2 O 3 -MXene-SR TIM is thermally stable and reliable. The underlying mechanism of the interfacial heat-transfer enhancement was revealed by the analysis of phonon density of states (PDOS) via a molecular dynamics simulation. The PDOS of MXene is more compatible with Al 2 O 3 and SR than graphene, so MXene sheets play the role as a bridge between Al 2 O 3 and SR to improve the interfacial phonon transport. This work provides an effective method to reduce interfacial thermal resistance in TIMs, which could facilitate the development of thermal management materials.
研究领域:
材料科学
·
热管理技术
·
界面工程
✓ 已验证
DOI
高影响因子
Advanced Healthcare Materials
·
2025
·
IF 9.6
Huan Liu,Aminov Nail,Decheng Meng,Liran Zhu,Xiaohan Guo,Cong Li,Xiaoqing Ye,Huanjun Li
Infected wound healing remains a significant clinical challenge, demanding innovative therapeutic strategies to simultaneously address bacterial elimination, tissue regeneration, and controlled drug delivery. Inspired by the hierarchical structure of crocodile teeth, a bioinspired, 3D-printed microneedle patch integrating Mxene nanosheets and a polymerizable deep eutectic solvent (PDES) composed of vinyl pyrrolidone (VP), itaconic acid (IA), and N-isopropyl acrylamide (NIPAM) is developed. The resulting MXene-based eutectogel microneedle (MF-MXene@MN) combines photothermal responsiveness, antioxidant activity, and temperature-triggered drug release for photothermal conversion and reactive oxygen species (ROS) scavenging. The gradient-height design inspired by crocodile teeth enhances tissue adhesion, while DLP 3D printing enables personalized wound dressing geometries with <50 µm resolution. In vitro and in vivo studies demonstrated a 94.88% wound closure rate within 10 days, 3.2-fold increased angiogenesis, 68% reduced bacterial viability ( S. aureus : 32.59%; E. coli : 48.17% under NIR), and pH-/temperature-responsive mangiferin release (88.3% cumulative release via 5 NIR cycles). These synergistic functions promote wound healing, offering superior antibacterial ability, tissue regeneration promotion, and drug release control compared to traditional wound dressings and microneedle systems. This multifunctional platform integrates bioinspired design, stimuli-responsive materials, and additive manufacturing, providing a transformative solution for precision wound management.
研究领域:
材料科学
·
医学工程
·
生物医学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF POWER SOURCES
·
2021
·
IF 9.127
Jinglian Zhu,Xu Zhang,Haiguang Gao,Yuting Shao,Yana Liu,Yunfeng Zhu,Jiguang Zhang,Liquan Li
Rechargeable magnesium batteries (rMBs) are promising techniques suitable for large-scale energy storage systems with low-cost and high safety. However, their development is severely hindered by strong coulombic effect between bivalent Mg 2+ and cathode materials . In this work, two dimensional hierarchical nano-micro hybrids are synthesized by in-situ generating VS 4 nanosheets on carbon-coated Ti 3 C 2 MXene matrix (denoted as VS 4 @Ti 3 C 2 /C). A high-performance rMB system is built by using the hierarchical nano-micro hybrids cathode, magnesium foil anode, and 0.25 M methylpyrrolidinium chloride in 0.25 M 2PhMgCl-AlCl 3 /tetrahydrofuran as the electrolyte. The existence of V–C bond proves that VS 4 is anchored on the surface of Ti 3 C 2 via a strong chemical bond, rather than simply by adsorption. The unique hierarchical nano-micro structure improves the accessibility of the electrolyte and reduces the charge transfer resistance, leading to a high discharge capacity of 492 mA h g −1 at 50 mA g −1 , an outstanding rate performance of 129 mA h g −1 at 1000 mA g −1 , and excellent cycling performance (over 900 cycles at 500 mA g −1 ). Moreover, reversible intercalation of MgCl + into VS 4 @Ti 3 C 2 /C is revealed by investigating the evolution of the hybrids during different electrochemical states. This study will shed light on designing high-performance MXene-based cathode materials for multivalent batteries.
研究领域:
材料科学
·
电化学
·
能源存储
·
纳米材料
·
多价离子电池
✓ 已验证
DOI
高影响因子
PROGRESS IN ORGANIC COATINGS
·
2025
·
IF 7.3
Wenjing Xie,Jiajiu Liang,Guangtao Chang,Ruoxin Li
Driven by increasing global energy consumption, smart textiles for personal thermal management, offering energy saving and dynamic temperature regulation, have garnered significant attention. This study introduces an all-weather personal thermal management textile engineered with three-dimensional structured MXene nanosheets, achieving bidirectional temperature control through passive thermal insulation and active photothermal conversion. Fabricated by electrostatically adsorbing MXene nanosheets onto hollow, thermally expandable microspheres (TEMs) and incorporating these MXene/TEMs composites as fillers in polyurethane coatings on cotton fabrics, the resulting textile exhibited exceptional thermal management capabilities. Experimentally, the coating exhibited a low thermal conductivity of 0.031 W m −1 K −1 and demonstrated remarkable photothermal performance, with 93.5 % solar absorption and 28.5 % conversion efficiency. In passive mode, the 0.8 mm coating can increase simulated skin temperature by 4.2 °C, while in active mode, rapid warming of 15.8 °C within 30 s under solar irradiation was achieved with minimized heat loss. In addition to the low-density characteristics, the coatings also exhibit excellent mechanical strength, flexibility, breathability, and water vapor transmission. This smart textile, based on the synergy of thermal conductivity inhibition and efficient photothermal conversion, presents a novel strategy for lightweight and versatile all-weather personal thermal management textiles with broad application potential.
✓ 已验证
产品关联
DOI
高影响因子
TALANTA
·
2025
·
IF 6.1
Lifang Gao,Yuheng Wang,Jixuan Zhang,Haoran Wang,Yue Zhang
Herein, a zwitterionic hybridization approach is engineered to develop a functional hybrid framework (MPC) for the efficient separation of immunoglobulin G (IgG). The in-situ polymerization of octa-carboxyl polyhedral oligomeric silsesquioxane (OCPOSS)-chitosan polymer on Ti 3 C 2 T x MXene effectually enables the formation of local zwitterionic hydrophilic microregions in MPC, and meanwhile actuates its affinity ability and recognition selectivity toward IgG. When 1 mg of MPC serves as adsorbent to treat IgG solution (100 mg L −1 , 1 mL), an adsorption efficiency of approximately 99.0 % is facilely reached. Superior adsorption performance of MPC is well demonstrated by satisfactory enrichment factor (119.3) and high binding capacity (866.4 mg g −1 ). MPC is further employed for the separation of IgG from complex biological samples, achieving a protein purity of 97.9 %. Experimental characterization and molecular docking simulation successfully affirm the prominent role of multiple components in MPC in the collaborative contribution to the selective affinity separation of IgG. This study not only affords a highly efficient pretreatment platform for specific biomarker detection and antibody purification, but also illuminates the huge prospects of zwitterionic MXene-based frameworks in the field of proteomics research.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）