PROGRESS IN ORGANIC COATINGS
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2025
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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.
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CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Yubo Wang,Lixuan Zeng,Jian Lin,Yongqiang Qian,Zhiling Luo,Feng Huang,Luzhuo Chen
Transparent actuators have significant potential in invisible and camouflage robots. However, traditional transparent actuators are typically unprogrammable and used in a single environment (on-land or in-water), which limits their working abilities in complex environments. Herein, we propose transparent actuators and robots that integrate amphibious actuations, programmable motions, self-healing function and camouflage function together. The actuator is composed of MXene polymer composites, including bone glue, gelatin, MXene (BGGM) and polyethylene terephthalate (PET). The transmittance of BGGM/PET actuator is >80 % at 600 nm wavelength, exhibiting high transparency. On one hand, the actuator shows a light-driven bending deformation on land due to the photothermal effect. Synergistic combination of the self-healing of BGGM and the shape-fixing of PET allows the spatial-programming of actuator to demonstrate light-driven complex deformations. On the other hand, the actuator can be driven by Marangoni effect on water by using BGGM composite as fuels. Adding functional modules enables the spatial-temporal programming of the actuator, so the actuator can showcase time-varying trajectories. Finally, we demonstrate a transparent swimming robot with dual-actuation modes and a transparent actuator that conveys invisible information stealthily while moving through a complex maze on water. This research offers a promising approach to camouflage amphibious robots.
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CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Yumeng Ge,Sin-Yi Pang,Jinhua Hu,Pengjie Zhong,Zhen Xiao,Le Wang,Zewen Su,Gongxun Bai,Shiqing Xu,Jianhua Hao
Addressing the water shortage issue in a green and sustainable manner, solar water evaporation technology is regarded as a promising strategy for water desalination. However, conventional solar evaporators face structural limitations and exhibit lower evaporation rates, hindering their practical application. In this study, we propose a biomimetic three-dimensional (3D) solar evaporator that demonstrates exceptional performance in light absorption and thermal management. By utilizing two-dimensional (2D) HF-free MXene nanosheets as photothermal materials, the evaporator enhances light capture, and the surface-rich functional groups of these nanosheets facilitate efficient water transport. Experimental results have shown that, by leveraging the advantages of the 3D structure, the evaporation rate of water under single solar irradiation can reach 3.46 kg m -2 h −1 , surpassing many other experimental devices. In addition to its environmental friendliness, the evaporator’s edge salt crystallization provides excellent anti-salt deposition functionality. Furthermore, purification experiments on West Lake water were conducted, demonstrating its efficacy in water treatment. This innovative evaporator can be considered as a 3D sustainable seawater desalination strategy with potential application prospects.
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JOURNAL OF ELECTROANALYTICAL CHEMISTRY
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2020
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IF 3.807
Quan Xu,Shuxian Chen,Jingkun Xu,Xuemin Duan,Limin Lu,Qingyun Tian,Xinxin Zhang,Yue Cai,Xinyu Lu,Liangmei Rao,Yongfang Yu
Luteolin (LUT) is one of the biologically active functional components, which was widely used in pharmacological applications. Thus, development of sensitive analytical methods for LUT determination is highly desired. In this work, Ti 3 C 2 -MXene/ZIF-67/CNTs heterostructure was exploited as a new electrochemical sensing platform for the sensitive determination of LUT. For the design of composite, the in-situ growth of ZIF-67 on CNTs surface ensures the stability of their binding and enhances the synergetic catalysis. Conductive MXene as matrix for the loading of ZIF-67/CNTs can promote the catalytic ability of composite. Electrochemical results show that the MXene/ZIF-67/CNTs modified electrode displays preeminent electrocatalytic activity and enhances electrochemical response to the redox reaction of LUT, ascribing to the synergistic effect of ZIF-67/CNTs and MXene. Upon the optimization of experimental parameters, e.g., pH, enrichment time, the sensor based on MXene/ZIF-67/CNTs composite exhibits excellent performance with wide linear relationship ranging from 0.1–1000 nM and a low limit of detection (LOD) of 0.03 nM (S/N = 3). Besides, MXene/ZIF-67/CNTs electrode performs high selectivity, stability, and acceptable reproducibility. Furthermore, the constructed sensor was successfully utilized to detect LUT in real samples with satisfactory recovery.
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ELECTROCHEMISTRY COMMUNICATIONS
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2022
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IF 5.443
Shuangshuang Zhao,Xuehang Wang,Narendra Kurra,Yury Gogotsi,Yu Gao
Two-dimensional (2D) niobium carbide, Nb 4 C 3 T x (T x : O, OH, and F), a representative member of the 43 MXene structural motif, has shown promising electrochemical performance in acidic electrolytes. The capacitive performance of Nb 4 C 3 T x in neutral aqueous electrolytes has been reported as moderate, but little effort has been made to improve it. In this paper, we report a method to introduce nanopores (pinholes) in Nb 4 C 3 T x MXene flakes by adjusting the etching time. The pinholes generated during the etching process improve ion diffusion pathways, which are otherwise hindered by the restacking of the 2D flakes. The “holey Nb 4 C 3 T x ” shows a 50 % improved rate capability at charge/discharge time scales of 1–2 s in 1 M Li 2 SO 4 , Na 2 SO 4 , and (NH 4 ) 2 SO 4 electrolytes. Our strategy of controlling the permeability of Nb 4 C 3 T x sheets can potentially be applied to other MXenes, providing guidance for improving the capacitance and rate capability of 2D materials.
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Desalination and Water Treatment
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2024
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IF 1
Runlin Han,Yongli Xie
In this work, TiO 2 /MXene nanocomposites have been explored with hydrothermal synthesis during the dye photocatalytic degradation process. They worked as photocatalyst with high efficiency. The degradation of organic dye methyl orange with MXene under ultraviolet (UV) light and visible light was studied in detail. The methyl orange can be degraded efficiently especially at acid condition. When the nanocomposites/dye ratio was fixed at 5, most of the dye (close to 99.9%) was degraded under UV and visible light irradiation in 3 h. When MXene was recycled to treat methyl orange, the degradation rate was kept at 96% after 2 cycles under UV light. It was found that the composite material showed improved photocatalytic performance under long time ultraviolet treatment. Scanning electron microscopy, X-ray diffraction and X-ray photoelectron spectroscopy characterizations of Ti 3 AlC 2 and MXene were carried to investigate the possible reasons for high degradation efficiency. MXene worked as a cocatalyst which enhanced the separation of electron hole pairs and catalytic performance.
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Small
·
2022
·Vol. 18
·期 30
·2202313
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IF 15.153
Yuming Zhang,Jun-Ming Cao,Zeyu Yuan,Hao Xu,Dongdong Li,Yilin Li,Wei Han,Lili Wang
Magnesium-ion batteries (MIB) have gradually attracted attention owing to their high theoretical capacity, high safety, and low cost. A bimetallic metal–organic framework self-sacrificing template and a co-assembly strategy are used to prepare a high-performance, stable cycling NiSe 2 -CoSe 2 @TiVCT x (NCSe@TiVC) heterostructure MIB cathode that can be used as a flexible integrated unit to power future self-powered systems. Benefiting from the synergistic effect of TiVCT x MXene and NCSe, the NCSe@TiVC heterostructure electrode has a discharge-specific capacity of 136 mAh g −1 at 0.05 A g −1 and high cycling stability of over 500 cycles; the assembled pouch-cell device as flexible integrated unit exhibits good practicability. The magnesium ion storage mechanism is also validated using quantitative kinetic analysis, ex situ XRD, and XPS techniques. Density functional theory analysis indicates the most stable Mg-atom adsorption sites in the heterostructure. This study broadens the possibilities for applying the TiVCT x MXene heterostructure to energy storage materials and future self-powered flexible systems.
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ACS Nano
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2020
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IF 14.588
Zehui Lin,Ji Liu,Wei Peng,Yunyi Zhu,Yang Zhao,Kang Jiang,Ming Peng,Yongwen Tan
Terahertz technology promises broad applications, which calls for terahertz electromagnetic interference (EMI) shielding materials to alleviate radiation pollution. 2D transition metal carbides and/or nitrides (MXenes) with metallic conductivity are promising for EMI shielding, but simultaneously realizing light weight, high stability, and foldability in a MXene shielding material to meet the requirements of increasingly popular portable and wearable equipment has remained a great challenge. Herein, an ion-diffusion-induced gelation method is demonstrated to synthesize free-standing, light-weight, foldable, and highly stable MXene foams, in which MXene sheets are cross-linked by multivalent metal ions and graphene oxide to form an oriented porous structure. The method is highly efficient, controllable, and versatile for scalable generation of functional 3D MXene structures with arbitrary shapes and synergistic properties. The distinctive cross-linked porous structure endows the light-weight MXene foam with good foldability, outstanding durability and stability in wet environments, and an excellent terahertz shielding effectiveness of 51 dB at a small thickness of 85 μm. This work not only provides an insight for the on-target design of high-performance terahertz shielding materials but also expands the applications of MXenes in 3D macroscopic form.
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SENSORS AND ACTUATORS A-PHYSICAL
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2026
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IF 5.1
Yongcheng He,Jingyi Liu,Han Chen,Yutong Yuan,Yuanliang Huang,Jun Jiang,Weichao Li,Liang Lin,Hongyan Yuan,Longhao Zou,Jian Jiao
Low-voltage operation below 500 V enabled by synergistic material-structural design. • Integrated MXene/PDMS composite achieves high dielectric constant, and folded multilayer structure for amplifies deformation. • The haptic actuator delivers 102 μm displacement and 103 mN force without pre-stretching. • Haptic array enables precise tactile pattern generation with 97.71% Braille recognition accuracy. • Wearable, flexible design with wireless control enables immersive VR texture simulation. Haptic feedback is crucial for immersive virtual and augmented reality, relying on soft actuators for natural and comfortable human-machine interaction. Dielectric elastomer actuators are promising for haptic feedback applications, owing to their advantageous properties including lightness, flexibility, and high power density. However, their low dielectric constant frequently necessitates the application of high operating voltages, thus making them prone to dielectric breakdown. Here, we propose a Ti₃C₂Tₓ MXene-based multilayer-folded dielectric elastomer haptic actuator operating at a low voltage enabled by an integrated materials and device design strategy. The haptic actuators feature a dielectric film with a high dielectric constant (above 6.39 at 1 kHz) achieved by incorporating Ti₃C₂Tₓ MXene into polydimethylsiloxane (PDMS), combined with a uniquely folded multilayer structure that accumulates deformation. The haptic actuator can deliver an out-of-plane displacement of 102 μm and a force of 103 mN without pre-stretching. A haptic display interface incorporating these actuators enables independent actuation that operates at a low voltage below 500 V. It supports various tactile patterns, such as Braille and texture simulation in virtual reality, offering a viable pathway toward immersive human-machine interactions. Download: Download high-res image (248KB) Download: Download full-size image
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ACS Applied Materials & Interfaces
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2025
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IF 8.2
Yingying Li,Guangyao Zhang,Deqi Fan,Zongze Li,Yi Lu
Achieving efficient and selective solar-driven CO2 reduction remains a grand challenge due to sluggish proton–electron transfer kinetics and limited reactant availability at catalytic interfaces. Herein, we present a hierarchically structured aerogel integrating triazine-based covalent organic frameworks (TCOF) with Nb2CTx MXene nanosheets embedded in a poly(vinyl alcohol)/sodium alginate (PVA/SA) matrix. The aerogel leverages broadband light harvesting, hierarchical water regulation, and localized photothermal activation to enhance multielectron CO2 conversion. The hydrophilic–hydrophobic PVA/SA scaffold promotes rapid water uptake and vapor-phase transport, while Nb2CTx enables efficient near-infrared-induced heating to establish a proton-rich interfacial microenvironment. Simultaneously, the porous TCOF network offers abundant CO2 adsorption and activation sites. This synergistic architecture facilitates stable proton-coupled electron transfer (PCET) pathways and C–C coupling. In situ spectroscopic analyses reveal enhanced formation and stabilization of *COOH, *CH3, and *OCCHO intermediates under photothermal conditions, evidencing facilitated C–C coupling for C2 product generation. Under 3-sun irradiation for 3 h, the optimized TCOF/Nb2CTx aerogel delivers exceptional yields of 119.3 μmol·g–1 CH4 and 94.9 μmol·g–1 C2H4, which is 2-fold higher than powder analogues and surpassing previous COF/MXene systems. This work demonstrates a generalizable strategy to engineer carbohydrate polymer-based aerogels with integrated light-to-heat conversion, vapor regulation, and catalytic site accessibility for efficient solar-to-chemical fuel generation.
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PubMed
高影响因子
COMPOSITES PART B-ENGINEERING
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2026
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IF 14
Jv Li,Chunwang Xu,Hongmei Chen,Kejing Yu,Gang Liu,Fenghua Zhang,Wenbing Li
Designing flexible electromagnetic interference (EMI) shielding materials that transition from static shielding to dynamic adaptability remains a significant challenge in the development of next-generation electronic protection. In this study, we fabricated a reusable flexible polyimide (PI)/MXene/silver nanowires (AgNWs) (PMA) EMI shielding composite film by assembling MXene and AgNWs onto a shape-memory PI matrix using a vacuum-assisted filtration technique. When the ratio of MXene to AgNWs was 2:1, the composite film exhibited a maximum electrical conductivity of 132 S/cm and an EMI shielding effectiveness of 60.68 dB in the X-band (8.2-12.4 GHz). After further optimizing the material structure, the gradient-structured PMA composite film (G-PM 2 A 1 ) achieved a shielding effectiveness of 67.85 dB. The shielding performance remained essentially unchanged under harsh conditions, including ultrasonic cleaning, acid corrosion, high temperature (250 °C), and low temperature (−196 °C). Owing to the intrinsic shape-memory properties of polyimide, the film could recover its original structure after repeated deformation-heating cycles, maintaining an EMI shielding effectiveness above 60 dB. Moreover, the composite film exhibited excellent thermal stability, mechanical strength, and flame retardancy. Its lightweight, flexibility, and environmental stability indicate potential for localized EMI shielding applications relevant to electric vehicle battery systems, where lightweight, flexible, and environmentally robust shielding layers are required.
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Applied Materials Today
·
2026
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IF 7
Rimsha Abbas,Muhammad Umair,Suzhu Yu,Jingjing Luo,Peike Wang,Jun Wei
Highly conductive and flexible inks are crucial for the fabrication of next-generation wearable electrochemical sensors. This study presents a multi-ion sweat sensor composed of screen-printed Ag-MXene conductive ink, featuring a high electrical conductivity of 2 × 10 6 S m -1 . A novel electrode configuration was developed, comprising three working electrodes (WEs) together with a common reference (RE) and counter electrode (CE), all coated with the same ion-selective gel. The use of a uniform gel across all WEs ensures a consistent sensing environment, minimizes ion cross-talk, and improves repeatability. The Ag-MXene ink has excellent electrochemical activity, resulting in rapid, reproducible, and very selective potentiometric responses even at low ion concentrations. The Ag-MXene ink-based multi-ion sweat sensor achieved near-Nernstian sensitivities of 65.1 ± 0.7 mV/decade for Na + , 59.8 ± 0.6 mV/decade for K + , and 57.5 ± 0.8 mV/decade for Li + . These results are close to the theoretical Nernstian slope (∼59.2 mV/decade at 25 °C). On-body testing reveals that the sensor performs consistently under mechanical deformation and in real-world situations, demonstrating its viability for continuous health monitoring. After mechanical cycling, the Ag–MXene electrodes retained R/R 0 ≈1 with negligible hysteresis, demonstrating the structural and electrical integrity of the composite ink. Sensing cycling further verified stability: repeated stepwise measurements for Na + (5–160 mM), K + (1–32 mM), and Li + (1–100 mM) produced nearly identical potential peaks across successive cycles with no cumulative drift and minimal up/down hysteresis. The calibrations remained near-Nernstian, with response times of ∼2–3 s and sub-second recoveries, demonstrating excellent mechanical and electrochemical durability. The scalable screen-printing fabrication approach enables the cost-effective and reliable fabrication of flexible, wearable multi-ion sensors. This study demonstrates the potential of Ag-MXene-based electrodes for high-performance, multi-functional sweat sensing and offers a feasible path to enhance wearable electronic technologies.
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