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
·
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
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DOI
高影响因子
JOURNAL OF NANOBIOTECHNOLOGY
·
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
·
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
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DOI
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
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2022
·
IF 9.965
Xunxin Chen,Meishan Li,Juan Hou,Ke Lu,Xuanyu Yue,Yafei Li,Long Chen,Zhiyong Liu,Xiaodong Yang
Nitrogen-doped Ti 3 C 2 T y MXene with multivalent cobalt and oxygen vacancy (Vo) modification was obtained by using molten salt method and greatly improved electrocatalytic performance. The structural properties of MXene and the valence state of cobalt were adjusted by controlling the molten salt temperature. When the molten salt treatment temperature was 377 °C, the obtained 377-CoO x N 1-x -Ti 3 C 2 T y maintained the chemical structure of MXene well, and also has high Co 2+ content and Vo content. Electrochemical test results showed that 377-CoO x N 1-x -Ti 3 C 2 T y had the lowest Hydrogen Evolution Reaction (HER) overpotential of 87.73 mV and good electrocatalytic stability. X-ray Photoelectron Spectroscopy (XPS) results and Density Functional Theory (DFT) calculations showed that the introduction of polyvalent cobalt and Vo in the nitrogen-doped Ti 3 C 2 T y structure effectively reduced the energy barrier of the electrocatalytic reaction of MXene.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
PubMed
高影响因子
ACS Applied Energy Materials
·
2024
·
IF 5.4
Dayakar Gandla,Yun’an Zhou,Yihao Yan,Yifan Niu,Fuming Zhang,Daniel Q. Tan
MXenes, a class of two-dimensional transition metal carbides and nitrides, hold great promise for electrochemical energy storage applications due to their exceptional electronic conductivity, tunable surface chemistry, and pseudocapacitive charge storage mechanisms. This study introduces a one-step approach to deposit Mo and Ti-dual oxide nanoparticles in situ onto Mo2Ti2C3Tx MXene using the Lewis acid molten salt method (LAMS), meticulously optimizing annealing conditions. The incorporation of Mo and Ti dual oxide nanoparticles improves the pristine Mo2Ti2C3Tx MXene by preventing collapse of the layered structure and restacking of MXene sheets. Both three-electrode and coin cell devices are assessed in an aqueous electrolyte, illustrating the favorable role of the nanoparticles acting as spacers. Remarkable outcomes include a specific capacity of 434 C g–1 at 5 mA cm–2, exceptional capacity retention of 94% after 5000 charge–discharge cycles at 50 mA cm–2, and a high gravimetric energy density of 52.5 W h kg–1 at a power density of 1442 W kg–1 in an aqueous 3 M KOH electrolyte. This research underscores the potential of double transition metal MXenes as energy storage electrodes and an eco-friendly mass synthesis route, contributing to sustainable advancements in energy storage technology.
研究领域:
材料科学
·
能源存储技术
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2020
·
IF 10.652
Yanjun Zheng,Rui Yin,Ye Zhao,Hu Liu,Dianbo Zhang,Xianzhang Shi,Bing Zhang,Chuntai Liu,Changyu Shen
Flexible wearable pressure sensors have attracted tremendous interest for applications in human health monitoring, electronic skin, artificial intelligence and so on. However, it is still a critical challenge for pressure sensors to simultaneously achieve high sensitivity and wide sensing range while performing well in response time, stability, reliability and wearing comfortability. Here, conductive MXene/cotton fabric was fabricated using the simple dip-coating technique and then sandwiched between polydimethylsiloxane film and an interdigitated electrode for flexible wearable piezoresistive pressure sensor. The abundant hydroxyl groups of cotton fabric and functional groups of MXene were beneficial for the good adhesion of conductive MXene nanosheets onto the entangled fiber networks, constructing effective conductive network. Taking advantage of the excellent flexibility and three-dimensional porous structure of cotton fabric and the special sandwich architecture of the sensor, the MXene/cotton fabric (MCF) based pressure sensor exhibited high sensitivity (5.30 kPa −1 in the pressure range of 0–1.30 kPa), broad sensing range (0–160 kPa), rapid response/recovery time (50 ms/20 ms), excellent stability and long-term durability. Moreover, the MCF based pressure sensor can be employed to detect and distinguish various human health signals, including finger motion, early stage Parkinson’s static tremor and wrist pulse. Importantly, E-skin was also designed based on the MCF based pressure sensor for the recognition of different tactile stimuli, exhibiting promising potential in next generation wearable electronics.
研究领域:
材料科学
·
生物医学工程
·
柔性电子学
✓ 已验证
DOI
高影响因子
Nano Research
·
2024
·Vol. 17
·期 6
·5651-5660
·
IF 9.5
Dong Jingyu,Li Zhaoyang,Liu Congqi,Zhou Bing,Liu Chuntai,Feng Yuezhan
Controlling the orientation of two-dimensional MXene within layered films is essential to optimize or tune their mechanical properties and electromagnetic interference shielding (EMI) performance, but achieving the high orientation MXene layers on an industrial scale remains a challenging goal. In this paper, a scalable layer-by-layer blade coating (LbLBC) method was employed to fabricate highly oriented MXene/polyvinyl alcohol (PVA) films. During the LbLBC process, MXene/PVA colloid suffered a strong shearing effect, which induced the ordered alignment of MXene nanosheets along the direction of the blade movement. The orientation of MXene can be effectively adjusted by changing the scraping gap of LbLBC, achieving a maximum Herman orientation factor f of 0.81. As a result, the mechanical properties and EMI performance of the as-prepared MXene/PVA films are in direct proportion to their orientation, with the optimal values of tensile strength of 145.5 MPa, fracture strain of 19.6%, toughness of 17.7 MJ·m −3 , and EMI shielding effectiveness of 36.7 dB. Furthermore, the inherently low mid-infrared (mid-IR) emissivity of MXene, combined with the densely oriented structure affords the composite films with IR stealth, resulting in a substantial decrease from 150 to 66.1 °C in the radiative temperature of a surface. Conclusively, these scalable MXene/PVA films exhibit remarkable potential for integration into the next generation of multifunctional protective camouflage materials.
研究领域:
材料科学
·
纳米技术
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）