Microsystems & Nanoengineering
·
2024
·Vol. 10
·期 1
·1-17
·
IF 7.3
Yang Chengxiu,Hu Jiafei,Liu Lihui,Wu Shaowei,Pan Mengchun,Liu Yan,Wang Haomiao,Li Peisen,Zhang Qi,Qiu Weicheng,Luo Huihui
The perception of fish locomotion is important for understanding their adaptive behaviors and ethological characteristics. However, the main strategy used for extracting fish attitudes involves the use of a vision-based monitoring system, which is limited in its range of observation and cannot perform tracking for long times. Here, we report the use of a wearable tagging electronic device, referred to as an underwater vest, to capture the surrounding flow field disturbances triggered by swimming or momentary postural changes. All of these goals were achieved by integrating a pair of pseudocapacitive pressure-sensing units and a flexible circuit board. Notably, additional conditions, such as variable hydraulic pressures and minimal changes in fish posture, require high stability and sensitivity of the sensing units. Thus, hybrid hydrogel electrodes were developed through cross-linking MXene with holey-reduced graphene oxide nanosheets and further modification with 1-ethyl-3-methylimidazolium dicyanamide ionic liquids, which increased the interfacial capacitance and long-term interfacial activity of the MXene. Consequently, the sensing unit exhibited ultrahigh sensitivity ( S max ~136,207 kPa −1 ) in an aquatic environment for 60 days and superior high-pressure resolution (10 Pa) within a wide working range of 1 MPa. Ultimately, an underwater vest integrated with such sensing units clearly distinguished and recorded fish locomotion. We believe that the designed device may open avenues in flow field monitoring and ocean current detection and provide new insights into the development of sensitive underwater tagging.
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DOI
高影响因子
COMPOSITES PART B-ENGINEERING
·
2022
·
IF 11.322
Zhuo Cai,Yifei Ma,Micun Yun,Mei Wang,Zhaomin Tong,Jonghwan Suhr,Liantuan Xiao,Suotang Jia,Xuyuan Chen
In wearable and microelectronic devices, there is a rising need for ultrathin electromagnetic interference (EMI) shielding films with multifunction, such as Joule heating and photothermal conversion. MXene has shown promising applications in EMI shielding due to its excellent electrical conductivity , abundant surface functional groups, and layered structures. However, the self-stacking, poor mechanical strength and hydrophilicity of MXene hinder its applications. In this study, MXene/holey graphene (MX/HG) composite film is fabricated in a layered structure. The hydrogen bonds between HG and MXene improve the mechanical properties and prevent the self-stacking of MXene sheets. EMI shielding performances are investigated according to the monolayer MXene sheets' size and HG's mass ratio. As a result, the large lamella-based MX/HG composite film shows outstanding EMI shielding effectiveness (EMI SE) of 56.15 dB, excellent low-voltage-driven Joule heating (up to 100 °C at 3 V within 4 s), and high-efficiency photothermal conversion (up to 49.8 °C under 1000 W m −2 within 30 s) at a thickness of 5 μm. The multifunctional film achieves impressive EMI shielding, Joule heating, and photothermal conversion performances at a low thickness, showing great prospects in wearable and microelectronic device applications.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Fangfang Su,Jiahe Liang,Zhongjie He,Yangyang Xin,Yisong Liu,Weirui Zhang,Zhuojun Mao,Lijun Yuan,Yaping Zheng,Xiaoqian Li
Recently, with the escalating severity of energy consumption issues, solar energy has attracted significant attention due to its clean, pollution-free, and renewable characteristics, among which solar thermal utilization is currently the most efficient way of utilizing solar energy. Ionic liquids (ILs) exhibit excellent thermal stability and wide liquid-phase range, but their limited optical absorption properties restrict practical applications. In this work, we pioneer the incorporation of magnetic ionic liquids (MILs) into nanofluids (NF) to boost the solar-thermal conversion of ILs-based systems. A novel nanofluid was engineered through electrostatic assembly of C-MOF@Ti 3 C 2 T x with hybrid ionic liquids (HIL), where HIL was synthesized by integrating MIL into non-magnetic ILs to enhance the optical absorption of the base fluid. Moreover, MXene deposition on the C-MOF surface after copper oxide removal effectively reduces the interfacial reflection coefficient of nanoparticles while improving full-spectrum solar absorption. The research indicates that incorporation MIL significantly enhances the optical absorption properties of the base fluid. The C-MOF@Ti 3 C 2 T x -HIL NF exhibits excellent thermal stability below 400 °C, low viscosity (50 mPa·s at 25 °C), and high solar absorption capacity, making it highly suitable for both pumping and heat generation in industrial applications. Furthermore, stagnation temperature tests revealed that the C-MOF@Ti 3 C 2 T x -HIL nanofluid achieves full-spectrum absorption at an ultralow mass fraction of 0.02 wt%, demonstrating rapid heat generation kinetics. The system attained an equilibrium temperature of 79.0 °C with a peak solar-thermal conversion efficiency of 91.2 % under 1 Sun irradiation. Additionally, the material exhibits exceptional cycling stability and water evaporation performance, showing promising application potential for seawater desalination and biomedical fields.
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产品关联
DOI
高影响因子
CARBON
·
2025
·
IF 11.6
Jiadong Li,Caiyun Liang,Chuanwei Lin,Yuna Wang,Yongjiu Liang,Dewen Dong
The increasing severity of electromagnetic interference (EMI) has driven rapid developments in EMI shielding materials. However, conventional shielding materials are often reflection-dominated, leading to secondary electromagnetic pollution. EMI shielding materials with high absorption coefficient are urgently needed to address this problem. In this study, double-layer MXene/sodium alginate (SA)–MXene/Fe 3 O 4 /SA composite aerogels were fabricated through successive unidirectional freezing, organosilane cross-linking, and silicone rubber encapsulation. The resulting aerogels exhibited excellent absorption-dominated EMI shielding performance, attributed to their unique porous architecture and appropriate material compositions. The optimized aerogel showed an EMI shielding effectiveness of 38.3 dB and an absorption coefficient of 0.79, achieving a well balance between high shielding effectiveness and high absorption coefficient. Furthermore, organosilane cross-linking combined with silicone rubber encapsulation enhanced the mechanical properties, yielding high compressive strength (170.9 kPa) and outstanding elasticity after 1000 compression cycles. The aerogel also demonstrated exceptional infrared stealth performance with low infrared emissivity and thermal insulation characteristic. The strategy proposed in this work offers a novel structural design approach for developing multifunctional, absorption-dominated EMI shielding materials, demonstrating great potential for applications in aerospace and military fields.
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产品关联
DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2025
·
IF 9
Qiankun Wu,Lichao Xia,Cunxian Lai,Wentian Zhang,Houlong Yang,Fangang Meng,Shanshan Zhao
Two-dimensional (2D) lamellar membranes exhibit great potential for efficient dye/salt separation, owing to their tunable interlayer channel structures and excellent molecular sieving selectivity. However, irregular stacking of 2D nanosheets and weak interlayer interactions often induce membrane swelling in aqueous environments, severely limiting their practical application prospects. In this study, a MXene composite membrane with structural stability, regular stacking, and outstanding permeability and selectivity was fabricated by incorporating zero-dimensional (0D) partially aminated graphene quantum dots (NGQDs) into MXene nanosheets. The experimental results demonstrate that 0D NGQDs can stably bind to MXene nanosheets via non-covalent interactions and disperse uniformly. The exposed amino groups on GQDs not only optimized the stacking structure of MXene layers but also enhanced interlayer forces by providing specific binding sites, thereby effectively alleviating the aqueous swelling issue of MXene membranes. The optimized composite membrane exhibited excellent rejection of Congo Red (CR) (>99 %), remarkable dye/salt separation efficiency, and long-term operational stability. Specifically, the separation factors for CR/NaCl and CR/Na 2 SO 4 mixed solutions reached 697 and 740, respectively, outperforming most 2D lamellar membranes and nanofiltration membranes reported in literature. This work provides valuable insights for the development and application of high-performance 2D lamellar membranes.
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产品关联
DOI
高影响因子
Energy Materials
·
2026
·Vol. 6
·期 10
·N
·
IF 11.9
Luowen Suo\u003Csup\u003E1,2\u003C\u002Fsup\u003E,Haihang Feng\u003Csup\u003E1,4\u003C\u002Fsup\u003E,Ziwei Zhang\u003Csup\u003E2\u003C\u002Fsup\u003E,Haibo Hu\u003Csup\u003E2\u003C\u002Fsup\u003E,Jun Wang\u003Csup\u003E1,\u003C\u002Fsup\u003E,Huamin Chen\u003Csup\u003E3,\u003C\u002Fsup\u003E
Flexible self-powered sensors based on transition metal carbides/nitrides (MXenes) are considered for intelligent human-machine interfaces (HMIs), but their use is limited by ambient oxidation and mechanical fragility during repetitive deformation. In this work, a surface-coating strategy is used to prepare PVA/MXene composite films, in which poly(vinyl alcohol) (PVA) is bonded to MXene through interfacial hydrogen bonds. The PVA layer reduces MXene’s exposure to moisture and oxygen and limits crack propagation under cyclic mechanical stress. The resulting triboelectric nanogenerator delivers a peak output voltage of 50 V with an Ecoflex counter layer and a maximum power density of 6 μW/cm2. The device charges a 2.2 μF commercial capacitor to ≈2.7 V within 60 s. A self-powered sensor array combined with a machine-learning model is used to distinguish six hand gestures; a support vector machine classifier reaches 93.33% ± 6.09% accuracy on the collected signals (45 samples, stratified 5-fold cross-validation). These results support the development of durable flexible self-powered devices and HMIs.
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DOI
高影响因子
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
·
2026
·
IF 8.2
Yuyang He,Yuxin Ma,Xinglai Yuan,Linyi Li,Limeng Song,Linan Wang,Haibin Wang,Fan Zhang,Rui Zhang,Bingbing Fan
An electrostatic–driven self–assembly strategy was employed to fabricate LM@MXene core–shell composites for EMW absorption. • The LM@MXene composites exhibit excellent processability and colloidal stability. • The optimized absorber delivers excellent performance with an RL min of −62.91 dB and an EAB of 3.52 GHz. • The electromagnetic–wave absorption performance was enhanced by polarization loss due to the formation of LM and MXene heterogeneous interfaces. The rapid proliferation of high-frequency electronic devices demands high-performance electromagnetic wave (EMW) absorbing materials. As an emerging functional filler, liquid metal (LM) has demonstrated significant potential for microwave absorption. However, the inherent high surface tension and fluid nature of LM pose substantial challenges to achieving structural stability and processability, making the construction of robust LM-based architectures a formidable task. Herein, an electrostatic‑driven self‑assembly strategy was adopted to fabricate LM@MXene core‑shell composites for electromagnetic‑wave absorption via activating the liquid‑metal surface, which generates active cations to trigger the spontaneous assembly of MXene nanosheets. As a result, the LM@MXene composites exhibit excellent microwave absorption performance: the minimum reflection loss (RL min ) reaches − 62.91 dB at ultrathin thickness of 1.0 mm, and a maximum effective absorption bandwidth (EAB max ) of 3.52 GHz at the thickness of 1.1 mm. The outstanding electromagnetic absorption performance was primarily dominated by polarization loss and conduction loss. Specifically, the multi-level conductivity gradients across the LM core, the native oxide layer, and the MXene shell induce pronounced charge accumulation and relaxation at these heterogeneous interfaces. Thus, this composite structural design provides a potential route for fabricating high-performance EMW-absorbing materials.
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DOI
高影响因子
ACS Nano
·
2021
·
IF 15.881
Mingyuan Chao,Lingzhang He,Min Gong,Na Li,Xiaobin Li,Longfei Peng,Feng Shi,Liqun Zhang,Pengbo Wan
Flexible, breathable, and degradable pressure sensors with excellent sensing performance are drawing tremendous attention for various practical applications in wearable artificial skins, healthcare monitoring, and artificial intelligence due to their flexibility, breathability, lightweight, decreased electronic rubbish, and environmentally friendly impact. However, traditional plastic or elastomer substrates with impermeability, uncomfortableness, mechanical mismatches, and nondegradability greatly restricted their practical applications. Therefore, the fabrication of such pressure sensors with high flexibility, facile degradability, and breathability is still a critical challenge and highly desired. Herein, we present a wearable, breathable, degradable, and highly sensitive MXene/protein nanocomposites-based pressure sensor. The fabricated MXene/protein-based pressure sensor is assembled from a breathable conductive MXene coated silk fibroin nanofiber (MXene-SF) membrane and a silk fibroin nanofiber membrane patterned with a MXene ink-printed (MXene ink-SF) interdigitated electrode, which can serve as the sensing layer and the electrode layer, respectively. The assembled pressure sensor exhibits a wide sensing range (up to 39.3 kPa), high sensitivity (298.4 kPa–1 for 1.4–15.7 kPa; 171.9 kPa–1 for 15.7–39.3 kPa), fast response/recovery time (7/16 ms), reliable breathability, excellent cycling stability over 10 000 cycles, good biocompatibility, and robust degradability. Furthermore, it shows great sensing performance in monitoring human psychological signals, acting as an artificial skin for the quantitative illustration of pressure distribution, and wireless biomonitoring in real time. Considering the biodegradable and breathable features, the sensor may become promising to find potential applications in smart electronic skins, human motion detection, disease diagnosis, and human–machine interaction.
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DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2022
·
IF 10.383
Yawen Zhang,Dongyun Chen,Najun Li,Qingfeng Xu,Hua Li,Jinghui He,Jianmei Lu
Two-dimensional (2D) materials are candidates for use in advanced molecular separation and water treatment. Among them, MXenes are cutting-edge two-dimensional (2D) materials with favorable properties such as high hydrophilicity, adjustable interlayer spacing, high mechanical strength, and structural stability. Therefore, they can be used to construct advanced lamellar membranes to ensure enhanced separation performance of modified membranes. Here, we prepared novel stable lamellar membranes through electrostatic attraction between polycation polyethyleneimine (PEI) and a negatively charged MXene, with hydrogen bond formation between their functional groups. By changing the pH of the suspension, the interlayer d-spacing of the prepared membrane could be altered to achieve precise molecular separation and ultrahigh organic solvent penetration. Furthermore, inserting PEI into the interlayer d-spacing of the membrane did not hinder the passage of water molecules. The prepared pH = 2-MXene-PEI membrane for dyes larger than 1.5 nm exhibited a rejection rate of greater than 96%, and the pH = 10-MXene-PEI membrane had a rejection rate of greater than 96% for dyes larger than 1.6 nm. In addition, the optimized MXene-PEI membranes showed channel stability. In this work, high-performance, stable, 2D MXene-PEI membranes with tunable nanochannels were developed. These membranes have great potential for use in precise molecular separation applications.
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DOI
PubMed
高影响因子
Journal of Materials Chemistry A
·
2019
·Vol. 7
·期 13
·7516-7525
·
IF 10.733
Guodong Zou,Bingcheng Ge,Hao Zhang,Qingrui Zhang,Carlos Fernandez,Wen Li,Jianyu Huang,Qiuming Peng
Increasing environmental problems and energy challenges have created an urgent demand for the development of green and efficient energy-storage systems. The search for new materials that could improve the performance of Li-ion batteries (LIBs) is one of today's most challenging tasks. Herein, a stable symmetric LIB based on the bipolar material-MXene/Na0.55Mn1.4Ti0.6O4 was developed. This bipolar hybrid material showed a typical MXene-type layered structure with high conductivity, containing two electrochemically active redox couples, namely, Mn4+/Mn3+ (3.06 V) and Mn2+/Mn (0.25 V). This MXene/Na0.55Mn2O4-based symmetric full cell exhibited the highest energy density of 393.4 W h kg−1 among all symmetric full cells reported so far, wherein it is bestowed with a high average voltage of 2.81 V and a reversible capacity of 140 mA h g−1 at a current density of 100 mA g−1. In addition, it offers a capacity retention of 79.4% after 200 cycles at a current density of 500 mA g−1. This symmetric lithium ion full battery will stimulate further research on new LIBs using the same active materials with improved safety, lower costs and a long life-span.
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DOI
高影响因子
Green Energy & Environment
·
2017
·
IF 0
Kaikai Li,Tifeng Jiao,Ruirui Xing,Guodong Zou,Qianran Zhao,Jingxin Zhou,Lexin Zhang,Qiuming Peng
MXene is a new type of layered two-dimensional transition metal carbide materials differing from graphene, demonstrating intriguing chemical/physical properties. Here the chemical modification of MXene and next fabrication of core–shell MXene–COOH@(PEI/PAA) n composites have been investigated. The obtained MXene-based composites were treated with gold nanoparticles to form MXene–COOH@(PEI/PAA) n @AuNPs nanocomposites, and their catalytic properties for nitro-compounds were studied. The prepared nanocomposites demonstrated good catalytic activity and reproducibility, showing potential applications in composite catalysts and environmental fields.
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DOI
CERAMICS INTERNATIONAL
·
2021
·
IF 4.527
Shilong Li,Wei Gu,Yuqing Sun,Dong Zou,Wenheng Jing
MXene (Ti 3 C 2 T x ) is a novel, two-dimensional (2D) layered material that is atomically thin, exhibits good mechanical strength , and is ideal for fabricating efficient membranes for molecular separation. However, the applications of MXene membranes are limited by their low water permeability owing to narrow channels and high tortuosity. A novel strategy for introducing artificial pores on the surface of MXene nanosheets via gentle in situ chemical etching with hydrogen peroxide (H 2 O 2 ) to prepare porous MXene nanosheets (PMS) is reported herein. This greatly increases the water permeability of MXene membranes while retaining the high rejection of small-molecule dyes. Permeable pores generated on MXene nanosheets transform the transport model of water molecules in the membrane from typical horizontal transport pathways dominated by interlayer channels to longitudinal–lateral three-dimensional transport pathways, affording increased water molecule transport channels and reduced transport distance. Based on different etching conditions, the obtained membranes exhibit high pure-water permeability ranging from 9.37 to 42.48 L m −2 h −1 bar −1 . Moreover, mild etching maintains the 2D structure of the membrane and retains a nearly complete rejection of congo red dye. This study provides a novel and effective strategy for preparing high-performance porous laminar MXene membranes for dye-separation applications.
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DOI
高影响因子
危险品化学品经营许可证（带存储）