Journal of Materials Chemistry C
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2025
·
IF 5.1
Junshu Feng,Zhenhua Tang,Guo-Xun Zeng,Tingsu Liu,Long Ye,Xin-Gui Tang,Yan-Ping Jiang,Xiu-Juan Jiang
Two-dimensional transition metal carbide/nitride (MXene) materials have been extensively employed in wearable electronics due to their outstanding physicochemical properties. Here, a straightforward and efficient ultrasonic welding technique combined with dip-coating was sequentially used to form PDA/MXene/APS-PFOTES multifunctional e-textile sensors on low-cost airlaid paper (AP) substrates. The PDA/MXene/APS-PFOTE/AP e-textile sensors showed exceptional breathability and superhydrophobicity, even under challenging conditions such as ultrasonic cleaning, high temperatures, and UV irradiation. Meanwhile, smart PDA/MXene/APS-PFOTE/AP e-textile devices exhibited stable sensing strain performances with a fast response time of 0.35 seconds and a broad range of 20 Pa–104.3 kPa. Additionally, the composite conductive fabric can be utilized for clinical monitoring of human activities through wireless transmission systems and can be applied for electromagnetic interference (EMI) shielding, demonstrating an EMI shielding effectiveness (SE) of 17 dB in the 8.2–12.4 GHz range.
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TALANTA
·
2024
·
IF 5.6
Lekai Chang,Shuli Bai,Ping Wei,Xingyue Gao,Jinfeng Dong,Bingpu Zhou,Chao Peng,Jianbo Jia,Tiangang Luan
In this study, the plasmonic Ag nanoparticles (Ag NPs) were uniformly anchored on the high conductivity Nb 2 C T x (MXene) nanosheets to construct an Ag/Nb 2 C T x substrate for surface-enhanced Raman spectroscopy (SERS) detection of polystyrene (PS) nanoplastics. The KI addition (0.15 mol/L), the volume ratio between substrate colloid and nanoplastic suspension (2:1), and the mass ratio of Nb 2 C T x in substrate (14%) on SERS performance were optimized. The EM hot spots of Ag/Nb 2 C T x are significantly enlarged and enhanced, elucidated by FDFD simulation. Then, the linear relationship between the PS nanoplastics concentration with three different sizes (50, 300, and 500 nm) and the SERS intensity was obtained (R 2 > 0.976), wherein, the detection limit was as low as 10 −4 mg/mL for PS nanoplastic. Owing to the fingerprint feature, the Ag/Nb 2 C T x -14% substrate successfully discerns the mixtures from two-component nanoplastics. Meanwhile, it exhibits excellent stability of PS nanoplastics on different detection sites. The recovery rates of PS nanoplastics with different sizes in lake water ranged from 94.74% to 107.29%, with the relative standard deviation (RSD) ranging from 2.88% to 8.30%. Based on this method, the expanded polystyrene (EPS) decomposition behavior was evaluated, and the PS concentrations in four water environments were analyzed. This work will pave the way for the accurate quantitative detection of low concentration of nanoplastics in aquatic environments.
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Nano-Micro Letters
·
2025
·Vol. 17
·期 1
·1-17
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IF 36.3
Wang Hao,Ding Jiheng,Zhao Hongran,Chu Qinchao,Zhu Jin,Wang Jinggang
Renewable 2,5-furandicarboxylic acid-based polyesters are one of the most promising materials for achieving plastic replacement in the age of energy and environmental crisis. However, their properties still cannot compete with those of petrochemical-based plastics, owing to insufficient molecular and/or microstructure designs. Herein, we utilize the Ti 3 C 2 T x -based MXene nanosheets for decorating carbon nanotube (CNT) and obtaining the structurally stable and highly dispersed dendritic hetero-structured MXene@CNT, that can act as multi-roles, i.e., polycondensation catalyst, crystal nucleator, and interface enhancer of polyester. The bio-based MXene@CNT/polybutylene furandicarboxylate (PBF) (denoted as MCP) nanocomposites are synthesized by the strategy of “in situ catalytic polymerization and hot-pressing”. Benefiting from the multi-scale interactions (i.e., covalent bonds, hydrogen bonds, and physical interlocks) in hybrid structure, the MCP presents exceptional mechanical strength (≈101 MPa), stiffness (≈3.1 GPa), toughness (≈130 MJ m −3 ), and barrier properties (e.g., O 2 0.0187 barrer, CO 2 0.0264 barrer, and H 2 O 1.57 × 10 −14 g cm cm −2 s Pa) that are higher than most reported bio-based materials and engineering plastics. Moreover, it also displays satisfactory multifunctionality with high reprocessability (90% strength retention after 5 recycling), UV resistance (blocking 85% UVA rays), and solvent-resistant properties. As a state-of-art high-performance and multifunctional material, the novel bio-based MCP nanocomposite offers a more sustainable alternative to petrochemical-based plastics in packaging and engineering material fields. More importantly, our catalysis-interfacial strengthening integration strategy opens a door for designing and constructing high-performance bio-based polyester materials in future.
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Journal of Environmental Chemical Engineering
·
2024
·
IF 7.4
Ning-xiao Wei,Yu-xing Wang,Hua-li Chen,Li-guang Wu,Ting Wang
In an effort to explore the potential application prospects of membrane separation technology in treating nuclear-contaminated wastewater, a TFN nanofiltration membrane incorporating the ZIF-8@Ti 3 C 2 T x nanocomposite was successfully synthesized using the interfacial polymerization method. This involved doping the microemulsion of ZIF-8@Ti 3 C 2 T x into the aqueous (organic) phase. The morphology and structure of ZIF-8@MXene nanocomposites and TFN nanofiltration membranes were characterized. The selective removal of ReO 4 - from simulated radioactive wastewater using the TFN nanofiltration membrane was evaluated. The results indicated that the ZIF-8@Ti 3 C 2 T x composite, uniformly dispersed in the polymer, effectively enhanced the pore structure and polarity of the nanofiltration membrane, thereby improving its permeability. The electronegativity of ZIF-8@Ti 3 C 2 T x also enhanced the negative charge on the surface of the polymer membrane, significantly improving the membrane’s performance in rejecting ReO 4 - while maintaining a low retention rate for Na + . This design facilitates the efficient selection of ReO 4 - from high-salinity wastewater. In addition, the layer spacing of Ti 3 C 2 T x further improved the screening of ReO 4 - and Na + . However, when 0.75 g·L −1 of microemulsion was added, it became challenging to disperse the microemulsion completely in the organic phase. This led to the agglomeration of composites in the nanofiltration membrane, weakening both flux and selectivity. Optimal performance was achieved with a microemulsion doping amount of 0.5 g·L −1 , resulting in the nanofiltration membrane M-O-1 exhibiting the best performance (Jp = 41.92 L·m 2 ·h −1 and R(ReO 4 - ) = 65.81%). Even at a high salt concentration (20 g·L −1 ), the M-O-1 membrane retained approximately 55% of pollutants after continuous operation for 5 h, indicating that the TFN nanofiltration membrane containing ZIF-8@Ti 3 C 2 T x holds significant promise for selectively extracting 99 Tc from wastewater with a high salt content.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Mengdan Yang,Yan Zhang,Meng Li,Weixue Meng,Ding Zhang,Jie Xu,Yingjiu Zhang,Fengmei Guo,Yuanyuan Shang,Anyuan Cao
MXene exhibits exceptional electrical and electrochemical properties, and is regarded as a promising candidate for future wearable electronic products. However, achieving a balance between flexibility and capacitance performance in MXene-based fiber supercapacitors remains a challenge. Here, MXene/Thermoplastic polyurethane (TPU) composite fibers with good conductivity and tensile properties, were prepared by wet spinning method. A carbon nanotube (CNT) film with continuous network structure was introduced on the surface of MXene/TPU composite fiber as a conductive interfacial layer to deposit a uniform and dense polypyrrole (PPy) array controllably. This structure is beneficial for improving the utilization of PPy and can enhance the overall strength and flexibility of composite fibers. The MXene/TPU/CNT@PPy composite fiber electrode demonstrates promising electrochemical performance, with a specific capacitance of 579F/cm 3 (at a current density of 1 A/cm 3 ). The assembled flexible fiber supercapacitor exhibits a power density of 499.8 mW/cm 3 and a corresponding energy density of 16.3 mWh/cm 3 (1 A/cm 3 ), suggesting potential applications in flexible and wearable energy storage devices and textiles.
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ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Shuying He,Yuerong Lv,Jingnan Qiu,Shudan Cui,Zixian Gao,Liang Peng
Treating metabolic dysfunction-associated fatty liver disease (MAFLD) and reducing the occurrence of MAFLD-associated liver cancer remain challenging. Two-dimensional (2D) tantalum carbide (Ta4C3) MXene nanozymes (MXenzymes) exhibit antioxidant and anti-inflammatory activities and have thus attracted considerable attention in the fields of oncology and engineering. However, the potential mechanism of action and bioactive properties of Ta4C3 in MAFLD remain uncertain. In our study, Ta4C3 not only inhibited lipid accumulation and disrupted lipid metabolism in hepatocytes but also reduced cell death caused by fatty acids by decreasing intracellular reactive oxygen species (ROS) levels, which significantly promoted the polarization of M1 macrophages to M2 macrophages by alleviating oxidative stress and further suppressing inflammatory factor expression. In mice fed a methionine–choline-deficient (MCD) diet, Ta4C3 reduced lipid accumulation, the infiltration of inflammatory cells, and liver cell apoptosis by modulating the cellular microenvironment through its anti-inflammatory and antioxidant properties. Therefore, Ta4C3 can be used as a multifunctional bioactive material to alleviate hepatic steatosis and inflammation in individuals with MAFLD/metabolic dysfunction-associated steatohepatitis (MASH) because of its robust antioxidant and anti-inflammatory effects.
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JOURNAL OF MEMBRANE SCIENCE
·
2024
·
IF 8.4
Qiang Xue,Wenqiao Meng,Yi Li,Qing Fang,Kaisong Zhang
The traditional 2D nanosheets, given its relatively large size, has obstacles in water transmission and may also cause non-selective defects in polyamide membranes. To account for size effects, we successfully synthesized MXene quantum dots (MQDs) with ultra-small size through simple hydrothermal reaction, which were then utilized to construct MQDs polyamide nanofiltration membranes. Compared to the blank membrane, the MQDs membranes prepared obtained remarkable improvements in permeance and salt rejection, achieving a water permeance of 16.3 Lm −2 h −1 bar −1 and Na 2 SO 4 rejection of 98.2%. Furthermore, MQDs membranes demonstrate exceptional antifouling properties and long-term performance stability. Molecular simulation reveals that the incorporation of MQDs effectively restricts the diffusion of piperazine (PIP) into the organic phase, thereby forming a loose membrane structure. Simulation of the transport process confirms that the loose membrane structure is more conducive to water transport, and exhibits reduced contact force between bovine serum albumin (BSA) pollutants and the surface of MQDs membranes. This work sheds light on high-performance nanofiltration via MQDs-regulated interfacial polymerization strategy.
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ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Siyuan Diao,Lili Meng,Christian Mark Pelicano,Jiajia Huang,Zhihong Tian,Feili Lai,Tianxi Liu,Shaokui Cao
Photothermal responsive hydrogels are widely used in bionic soft actuators due to their remote-controlled capabilities and flexibility. However, their weak mechanical properties and limited responsiveness hinder their potential applications. To overcome this, we developed an innovative laponite/MXene/PNIPAm (LxMyPN) nanocomposite hydrogel that is mechanically robust and exhibits excellent photothermally responsive properties based on abundant hydrogen bonds. Notably, laponite clay is used as a co-cross-linking agent to improve the mechanical properties of LxMyPN hydrogel, while MXene nanosheets are added to promote the photothermal responsiveness. The resulting L3M0.4PN nanocomposite hydrogel exhibits enhanced mechanical properties, with a compressive strength of 0.201 MPa, a tensile strength of 90 kPa, and a fracture toughness of 27.25 kJ m–2. In addition, the L3M0.4PN hydrogel displays a deswelling ratio of 73.6% within 60 s and experiences an excellent volume shrinkage of 82.4% under light irradiation. Furthermore, hydrogel actuators with fast response behaviors are constructed and employed as grippers capable of grasping and releasing target objects. Overall, this high-strength and fast-responsive hydrogel actuator is beneficial to paving the way for remote controlled soft robots.
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ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Guolong Wang,Zhuofan Yang,Leyuan Li,Junwen Ren,Jiamei Liu,Lei Li
Modern electrical applications urgently need flexible polymer films with a high dielectric constant (εr) and low loss. Recently, the MXene-filled percolative composite has emerged as a potential material choice because of the promised high εr. Nevertheless, the typically accompanied high dielectric loss hinders its applications. Herein, a facile and effective surface modification strategy of cladding Ti3C2Tx MXene (T = F or O; FMX) with fluorographene (FG) via self-assembly is proposed. The obtained FMX@FG hybrid yields high εr (up to 108 @1 kHz) and low loss (loss tangent tan δ = 1.16 @ 1 kHz) in a ferroelectric polymer composite at a low loading level (the equivalent of 1.5 wt % FMX), which is superior to its counterparts in our work (e.g., FMX: εr = 104, tan δ = 10.71) and other studies. It is found that the FG layer outside FMX plays a critical role in both the high dielectric constant and low loss from experimental characterizations and finite element simulations. For one thing, FG with a high F/C ratio would induce a favorable structure of high β-phase crystallinity, extensive microcapacitor networks, and abundant interfacial dipoles in polymer composites that account for the high εr. For another, FG, as a highly insulating layer, can inhibit the formation of conductive networks and inter-FMX electron tunneling, which is responsible for conduction loss. The results demonstrate the potential of a self-assembled FMX@FG hybrid for high εr and low loss polymer composite films and offer a new strategy for designing advanced polymer composite dielectrics.
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Nano Research
·
2024
·
IF 9.5
Zeng Shaofeng,Ye Yuanji,Zhou Peidi,Yi Shimin,Guo Qiaohang,Chen Huamin,Shen Guozhen,Weng Mingcen
Smart actuators have a wide range of applications in bionics and energy conversion. The ability to reconfigure shape is essential for soft actuators to achieve various shapes and deformations, which is a crucial feature for next-generation actuators. Nonetheless, it is still an enormous challenge to establish a straightforward approach to creating programmable and reconfigurable actuators. MXene-cellulose nanofiber composite film (MCCF) with a brick-and-mortar hierarchical structure was produced through a vacuum filtration process. MCCF demonstrates impressive mechanical properties such as a tensile stress of 68 MPa and a Young’s modulus of 4.65 GPa. Besides, the MCCF highlights its potential for water-assisted shaping/welding due to the abundance of hydrogen bonds between MXene and cellulose nanofibers. MCCF also showcases capabilities as a humidity-driven actuator with a rapid response rate of 550°·s −1 . Using the methods of water-assisted shaping/welding, several bionic actuators (such as flower, butterfly, and muscle) based on MCCF were designed, highlighting their versatility in applications of smart actuators. The research showcases the impressive capabilities of MXene-based actuators and offers beneficial insights for the advancement of future intelligent materials.
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CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Ying Song,Qi Ao,Tuohao Jiang,Xinglai Tong,Ran Ding,Xiaogang Li,Jun Tang
Wearable epidermal electronics fabricated from MXene-based conductive hydrogels have attracted considerable interest because of their promising prospects in real-time health monitoring and human–computer interaction sensing. However, the development of a sustainable hydrogel with exceptional mechanical toughness, high conductivity, and self-adhesion is crucial to reliably capture signals through polymer network designs that establish robust interactions between MXene nanosheets and network substrates while minimizing electronic waste generated by discarded sensors. This study presents the fabrication of a sustainable conductive MXene-based dual-network hydrogel through skillful assembly of MXene nanosheets, β-cyclodextrin with azobenzene-modified polyacrylic acid chains, and poly (vinyl alcohol) polymer networks. The hydrogel demonstrates exceptional mechanical properties (strength at breaking ∼ 625 kPa, elongation at break ∼ 630 %) attributed to the presence of numerous hydrogen bonds and host–guest interactions, along with superior electrical conductivity (23.65 S/cm) and self-adhesion. The hydrogel demonstrates exceptional sensitivity across a wide range of strains, enabling the detection of various human movements and achieving successful applications in handwriting recognition and sign language translation. Under acidic condition and UV irradiation, the disassembly of AZO and β-CD as well as the untangling of PVA chains entanglement facilitate the release and recycling of MXene. This study presents a technological platform that holds promise for developing conductive hydrogels with enhanced sensing capabilities, catering to the requirements of stretchable electronic skin and intelligent robotic systems.
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Advanced Composites and Hybrid Materials
·
2024
·Vol. 7
·期 2
·1-15
·
IF 23.2
Wu Wenling,Zhang Xuan,Chen Yinghao,Helal Mohamed H.,Alshahrani Wafa A.,Alqarni Nawal D.,Zhao Ting,Zhu Jianfeng,Luo Hongjie
As an enormously valuable cultural heritage, to make sure bronze relics receive more protection and extend the preservation time, the exploration and research of protective coatings for bronze are a systematic, long-term, and specialized study project. However, because of the diversity of influencing factors and sensitivity of copper-based substrate, the stabilization of bronze is confronted with a major challenge. Herein, a novel multifunctional organic-inorganic hybrid coating of fluoroethylene vinyl ether (FEVE), metal-organic framework (MOF)-derived hollow dodecahedral NiCo 2 O 4 nanocapsules, and Ti 3 C 2 T x -MXene nanosheets (FEVE@NiCo 2 O 4 /Ti 3 C 2 T x ) with superior superhydrophobicity, weatherability, and structural stability was fabricated. The protective effect and anticorrosion performance of organic-inorganic hybrid coating were researched by morphological examination, X-ray photoelectron spectroscopy, accelerated aging test, and electrochemical measurements. Furthermore, the multifunctional FEVE@NiCo 2 O 4 /Ti 3 C 2 T x coating exhibited favorable self-cleaning property, ultraviolet (UV) resistance, reversibility, and maintained good transparency without changing the bronze color and appearance, which would be attributed to the labyrinth effect and the complicated cross-linked skeleton of organic-inorganic hierarchical structure, preventing the transmission and diffusion of corrosive mediums. This work develops a novel material strategy to protect bronzes and explores the anticorrosion mechanism of multifunctional organic-inorganic hybrid, providing guidelines for next-generation promising protection coating. Graphical abstract
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危险品化学品经营许可证（带存储）