JOURNAL OF APPLIED POLYMER SCIENCE
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2026
·
IF 2.8
Juhong Lin,Lufen Dai,Kewei Luo,Huagao Fang,Xuefeng Yang,Yunsheng Ding
Polyvinyl alcohol (PVA) is a synthetic and biodegradable polymer with high oxygen barrier property. However, its practical application as coatings in food packaging is limited by insufficient mechanical strength, poor water resistance, weak UV shielding performance, and a lack of active antimicrobial functionality. In this study, polyethyleneimine (PEI) modification not only improved the dispersion of Ti 3 C 2 T x MXene but also endowed the PVA film with enhanced mechanical properties, superior water resistance, barrier performance, antimicrobial, and UV-shielding capabilities. The results showed that compared with neat PVA film, the nanocomposite with 4 wt% PMXene (PEI modified MXene) exhibited a tensile strength increase from 27.8 MPa to 38.4 MPa, representing a 38% improvement. The water vapor transmission rate decreased from 35.5 g/m 2 ·24 h to 29.0 g/m 2 ·24 h, and the oxygen transmission rate dropped from 1.5 cm 3 /m 2 24 h to 0.7 cm 3 /m 2 ·24 h. The PVA nanocomposite coating with 6 wt% PMXene blocked 97% of UV light and exhibited antibacterial efficacy exceeding 99% against Staphylococcus aureus and Escherichia coli . A fruit preservation test further confirmed that the composite coating can effectively prolong the storage life of cherry tomatoes. Therefore, these PVA nanocomposites demonstrate potential use in packaging applications in the food industry and pharmaceutical storage fields.
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JOURNAL OF ALLOYS AND COMPOUNDS
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2026
·
IF 6.3
Zitao Yang,Chao Li,Jing Xu,Fangdi Wu,Kefan Zhang,Junhao Cai,Huaixiu Ye,Shuang Yang,Rongqi Zhang,Qing Wang,Yongnan Zhao
To enhance the energy density of MXene-based supercapacitors, metal porphyrin (MPP) is intercalated between the highly conductive two-dimensional (2D) MXene layers, thereby improving the electrochemical performance of MPP and preventing the restacking of MXene layers during the charge-discharge process of the supercapacitor. In this work, a cobalt tetraphenylporphyrin (CoTPP)/MXene nanocomposite is prepared through a simple π-π stacking self-assembly. The successful intercalation of CoTPP between the MXene layers was confirmed by SEM, TEM, XRD, XPS, and BET. Furthermore, Density functional theory (DFT) calculation results demonstrate that the interaction between CoTPP and MXene stabilizes the composite structure. MXene provides a conductive network for CoTPP, reducing the reaction energy barrier during the charge-discharge process and accelerating ion and electron transport. The symmetric all-solid-state supercapacitor based on the CoTPP/MXene composite exhibits an energy density of 12.7 Wh kg −1 and a power density of 320 W kg −1 , which demonstrates remarkable cycling stability, maintaining a capacity retention of 96.67 % even after 20000 cycles under a high current density of 5 A g −1 . This work presents a straightforward and effective approach for synthesizing CoTPP/MXene with superior electrical conductivity, exceptional chemical stability, and outstanding energy storage performance, making it a promising candidate for supercapacitor electrodes.
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Nano-Micro Letters
·
2026
·Vol. 18
·期 1
·184
·
IF 36.3
Chang Li,Zhang Xinci,Liu Tingting,Li Benyi,Ji Ying,Sun Gongming,Wang Ziming,Zhang Xitian,Cao Maosheng,Li Lin
The development of multifunctional electromagnetic wave-absorbing materials is essential for next-generation flexible electronics and intelligent protection systems. Herein, a novel three-dimensional porous MXene-based film integrated with metallic nickel nanoparticles (Ni-PMF) is designed and synthesized with the potential to address the urgent need for multifunctional electromagnetic wave-absorbing materials in next-generation intelligent systems. By using polystyrene spheres as sacrificial templates, a hierarchical porous architecture is constructed to prevent MXene nanosheet restacking, extend electromagnetic wave propagation paths, and optimize impedance matching. Simultaneously, uniformly distributed Ni nanoparticles introduce abundant heterogeneous interfaces, enhancing interfacial polarization and magnetic loss, which significantly improve electromagnetic wave attenuation. The Ni-PMF film achieves a minimum reflection loss of –64.7 dB and a broad effective absorption bandwidth of 7.2 GHz, covering the full Ku-band and outperforming most reported MXene thin film absorbers. In addition to superior electromagnetic wave absorption, the film demonstrates excellent electrothermal conversion and flexible strain-sensing capabilities, enabling integrated protection and real-time sensing functions. This multifunctional material offers promising potential for next-generation smart flexible electronic systems.
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PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
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IF 8.1
Kunyan Nie,Jianbo Li,Heng Lu,RuiLin Zhang,Yu’an Chen,Fusheng Pan
Magnesium hydride (MgH 2 ) is a solid-state hydrogen storage material with promising applications. However, its slow hydrogen release rate at low temperatures (<573 K) and high hydrogen release energy barrier severely limit its practical applications. In this work, a bimetallic oxide (cubic NaNbO 3 ) with side length of 1–10 μm was derived from Nb 2 CT x MXene through a simple hydrothermal reaction, which has a high catalytic activity. The MgH 2 -5 wt% NaNbO 3 composite can rapidly release 6.18 wt% H 2 in 12 min at 260 °C and uptake 3.45 wt% H 2 in 90 min at 30 °C. The activation energy for dehydrogenation (E a ) of MgH 2 -5 wt% NaNbO 3 composite was calculated to be 84.72 kJ/mol, which is much lower than that of milled MgH 2 (150.98 kJ/mol). In addition, hydrogenation and dehydrogenation cycling test results indicated that the composite material presents excellent stable cycling durability, with a capacity retention rate of 99.7 % after 40 cycles, with almost no capacity degradation. The excellent hydrogenation and dehydrogenation ability is mainly contributed by the combined effect of NaMgH 3 , NaNbO 3 , Nb metal and NbH x . The results of this work are instructive for the design of high-properties catalysts to enhance the hydrogen storage capacity of Mg/MgH 2 system.
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APPLIED SURFACE SCIENCE
·
2023
·
IF 6.7
Haitao Zhang,Hanyu He,Yongxiang Huang,Shi Pu,Yanting Xie,Junfeng Huang,Xinling Jiang,Yongbin Wang,Shenglong Wang,Hongzhi Peng,Yuanxiao Qu,Weiqing Yang
As a recent rising star 2D material, MXenes have attracted great attention in many fields. However, the weak interaction induced self-stacking phenomenon and surface oxidation caused structure failure seriously hinder the practical application of MXenes. Herein we develop a biothermochemistry method to construct 3D crosslinked Ti 3 C 2 T x (3D-MX). This novel structured 3D-MX can be prepared in five different kinds of biological reagents, showing good university. After crosslinking, 3D-MX not only resists layer stacking but also exhibits extreme on-shelf stability up to 550 days. We reveal that the formation mechanism originates from the electrostatic/chemical interaction between surface functional groups and the crosslinking agents. Interestingly, the biothermochemical treated Ti 3 C 2 T x MXenes exhibit an extremely-rapid film-processed capability (only 3 min), addressing the long-standing issue of low-efficient and tedious solution-vacuum filtrated 2D films. To further verify its practical application, we assemble 3D-MX based supercapacitors that show a high specific capacitance of 265 Fg −1 at 1 A g −1 , and moreover, no supercapacitance attenuation within 720 h. This proposed biothermochemistry method to simply and rapidly build 3D Ti 3 C 2 T x crosslinked network provides a new perspective to promote the practical application of MXenes through simultaneously addressing their self-stacking and oxidative degradation issues.
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高影响因子
ACS Applied Materials & Interfaces
·
2020
·
IF 8.758
Xin Wang,Jie Wang,Jinwen Qin,Xi Xie,Rui Yang,Minhua Cao
MXenes, as excellent candidate anode materials for sodium ion batteries (SIBs), suffer from sluggish ion-diffusion kinetics resulting from the anchoring effect of the negatively charged functional groups on their surface on sodium ions. Herein, we introduce positively charged conductive polyaniline (PANI) to induce self-assembly of Ti3C2Tx MXenes into a three-dimensional PANI/Ti3C2Tx network. In this PANI/Ti3C2Tx network, PANI not only intercalates into Ti3C2Tx nanosheets to enlarge the interlayer spacing, but also promotes negative-to-positive transition of the surface charges of the Ti3C2Tx nanosheets, significantly improving ion-diffusion kinetics. Electrochemical test results further confirm the superb ion-diffusion kinetics of the PANI/Ti3C2Tx network. Meanwhile, a covalent interaction (Ti–N) between PANI and Ti3C2Tx, proved by X-ray photoelectron spectra (XPS) and X-ray absorption near-edge structure (XANES) tests, plays a key role in stabilizing this network structure. Therefore, PANI/Ti3C2Tx exhibits excellent sodium storage performances with a high specific capacity, superior rate performance and ultralong lifespan at high current density. More importantly, when operated at rigorous temperatures from +50 to −30 °C, PANI/Ti3C2Tx also exhibits good electrochemical performances. The present work presents a simple strategy for designing 3D porous MXene-based materials to realize high rate performance and all-climate energy storage device.
研究领域:
材料科学
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储能技术
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电化学
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纳米材料
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电池技术
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高影响因子
ACS Nano
·
2021
·
IF 15.881
Shuo Li,Zhaodi Fan,Guiqing Wu,Yanyan Shao,Zhou Xia,Chaohui Wei,Fei Shen,Xiaoling Tong,Jinchao Yu,Kang Chen,Menglei Wang,Yu Zhao,Zhipu Luo,Muqiang Jian,Jingyu Sun,Richard B. Kaner,Yuanlong Shao
MXenes are an emerging class of highly conductive two-dimensional (2D) materials with electrochemical storage features. Oriented macroscopic Ti3C2Tx fibers can be fabricated from a colloidal 2D nematic phase dispersion. The layered conductive Ti3C2Tx fibers are ideal candidates for constructing high-speed ionic transport channels to enhance the electrochemical capacitive charge storage performance. In this work, we assemble Ti3C2Tx fibers with a high degree of flake orientation by a wet spinning process with controlled spinning speeds and morphology of the spinneret. In addition to the effects of cross-linking of magnesium ions between Ti3C2Tx flakes, the electronic conductivity and mechanical strength of the as-prepared fibers have been improved to 7200 S cm–1 and 118 MPa, respectively. The oriented Ti3C2Tx fibers present a volumetric capacitive charge storage capability of up to 1360 F cm–3 even in a Mg-ion based neutral electrolyte, with contributions from both nanofluidic ion transport and Mg-ion intercalation pseudocapacitance. The oriented 2D Ti3C2Tx driven nanofluidic channels with great electronic conductivity and mechanical strength endows the MXene fibers with attributes for serving as conductive ionic cables and active materials for fiber-type capacitive electrochemical energy storage, biosensors, and potentially biocompatible fibrillar tissues.
研究领域:
材料科学
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纳米技术
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能量存储
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电化学
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柔性电子学
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高影响因子
Journal of Environmental Chemical Engineering
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2026
·
IF 7.2
Yingfeng Wang,Ming Huang,Maoli Yin,Wei Li,Xun Zhang,Xiaojuan Li,Gang Li
Bacterial adhesion and proliferation on the surface of solar energy evaporator lead to contamination of the evaporation water and reduce the efficiency of photothermal evaporation. In this work, the metal-organic framework (MOF), HKUST-1 was in situ synthesized onto the surface of MXene, and CuS was sulfurized onto the Cu 2+ sites to form MX/HK@CuS nanosheets. The morphology, microstructure, and crystallinity of MX/HK@CuS were characterized using SEM, EDS, FTIR, XRD, and XPS. Results shows that MX/HK@CuS exhibited fair photothermal water evaporation capabilities, with a photothermal evaporation efficiency exceeding 30% in aqueous solution under irradiation. The photothermal water evaporation efficiency of MX/HK@CuS-3 thin sheets was 86%, demonstrating significant photothermal water evaporation performance. The antibacterial properties of the MX/HK@CuS series were attributed to Cu 2+ release, photothermal and photodynamic conditions via sulfurization times. Interestingly, MX/HK@CuS-3 shows over 99.9% of inactivation to E. coli and S. aureus within 20 min of exposure under NIR and simulated sunlight illumination. Meanwhile, MX/HK@CuS-3 demonstrated improved efficacy in biofilm eradication, with weak bacterial adhesion. The MX/HK@CuS series showed impressive blood compatibility, indicating its biocompatibility and environmental safety. In conclusion, this study provides a novel multifunctional platform for solar-energy evaporator materials, combining triple functional antibacterial properties with high photothermal conversion efficiency.
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高影响因子
JOURNAL OF MATERIALS SCIENCE
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2026
·
IF 3.9
Huang Xing-Wen,Chen Yi-Zhao,Hu Jin-Hong,Liao Song-Yi,Li Yue-Zhu,Liu Rong-Tao,Liu Yi-Dong,Li Shi-dong,Min Yong-Gang
Traditional lithium-ion batteries suffer from poor cycle and rate performance due to low structural stability and the sluggish charge transfer kinetics of cathode during the lithiation and delithiation processes. Polyimide (PI) electrode, known for high theoretical capacity, structural tunability, inherent safety feature and sustainability, have garnered significant attention, offering a promising solution in addressing these issues. Nevertheless, the intrinsic insulation characteristic restricts the capacity of PI material. The emergence of two-dimensional layered Ti 3 C 2 T x MXene with low charge transfer resistance and high electrocatalytic activity is highly suitable for enhancing the electrochemical performance of PI. Therefore, integrating PI with few-layered MXene would combine PI’s abundant redox-active sites with MXene’s excellent conductivity, creating a robust electrode with high capacity, ultrafast kinetics, and cycle durability. Based on this strategy, the hybrid material composed of naphthalene-based PI (NPI) with stable molecular structure and few-layered MXene, denoted as NPI@MXene, has been successfully designed and fabricated through the eco-friendly solid-state polycondensation approach. By adjusting the feed ratio of reactants, the hybrid electrode with 10 wt% MXene (NPI@10%MXene) demonstrates the layer-plus-island-like stable structure and good interaction between NPI and MXene, which delivers the highest rate capacity. Even subjected to a high-current density of 8 A g −1 , the NPI@10%MXene composite maintains 74% (~ 84 mAh g −1 ) of its initial capacity. It also exhibits long-life cycling stability with ~ 77% retention after 5000 cycles (1 A g −1 ). Moreover, the NPI@10%MXene composite reveals enhanced capacitive effect and fast Li + diffusion coefficient during the discharge/charge process (1.43 × 10 –9 /1.43 × 10 –9 cm 2 s −1 , respectively), outperforming those of pristine NPI. The above experimental results highlight remarkable potential of NPI@10%MXene for application in ultrafast Li + storage. Thus, NPI@10%MXene cathode offers a viable strategy to reconcile rapid electrochemical reaction with long-term stability in sustainable rechargeable batteries.
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Science China-Materials
·
2018
·Vol. 61
·期 5
·728-736
·
IF 4.318
Li Kaikai,Jiao Tifeng,Xing Ruirui,Zou Guodong,Zhou Jingxin,Zhang Lexin,Peng Qiuming
MXene, a new type of two-dimensional layered transition metal carbide material differing from graphene, demonstrates intriguing chemical/physical properties and wide applications in recent years. Here, the preparation of the self-assembled MXene-gold nanoparticles (MXene@AuNPs) nanocomposites with tunable sizes is reported. The nanocomposites are obtained via the self-reduction reactions of MXene material in a HAuCl 4 solution at room temperature. The sizes of the Au particles can be well-controlled by regulating the self-reduction reaction time. They can greatly influence the catalytic behaviors of the MXene@AuNPs composites. MXene@AuNPs composites with optimized reduction time show high catalytic performances and good cycle stability for model catalytic reactions of nitro-compounds, such as 2-nitrophenol and 4-nitrophenol. This work demonstrates a new approach for the preparation of tunable MXene-based self-assembled composites.
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高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2026
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IF 9.2
Bo Zhang,Yongqi Wang,Qiyi Duan,Huinian Zhang,Yueqing Wang,Li Guo,Zhao Zhang
Magnesium hydride (MgH 2 ) has attracted much attention due to its high hydrogen storage capacity and low cost, but it is limited by its slow absorption/desorption kinetics and excessively high operating temperature. In this study, a multiphase synergistic Ru@TiO 2 @MXene catalyst was successfully synthesized by depositing ruthenium onto in-situ oxidized MXene. The resulting catalyst significantly improved the hydrogen absorption/desorption kinetics of MgH 2 . Experimental results demonstrate that with addition of 5 wt% Ru@TiO 2 @MXene, the MgH 2 composite exhibits a significantly reduced onset dehydrogenation temperature of 191 °C and achieves considerable hydrogen absorption at room temperature. The apparent activation energy ( E a) for MgH 2 decreases to 84.92 kJ/mol. In addition, the system maintained a high capacity retention of 97% after 150 cycles.The superior catalytic performance is attributed to the high dispersion of Ru species, the synergistic catalytic activity of multivalent Ti, and high specific surface area MXene. This work provides new insights for designing efficient MgH 2 catalysts.
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高影响因子
TALANTA
·
2026
·
IF 6.7
Shunyi Zhu,Yanting Guo,Jinhui Miao,Yuhong Yao,Dandan Liu,Guangming Nie
Monitoring humidity accurately and reliably is critical for healthcare, human–machine interaction, and smart systems. However, existing humidity sensors struggle to simultaneously achieve ultrahigh sensitivity, fast response, environmental stability, and mechanical flexibility. Inspired by the cerebral cortex's folded structure and neural protection mechanisms, we develop a bioinspired flexible humidity sensor based on alkalized MXene (aMXene), oxygen vacancy-engineered TiO 2 (O v -TiO 2 ), and sodium lignosulfonate (SL). The aMXene mimics cortical folds to provide abundant water-adsorption sites, SL acts as a protective “meningeal” layer to enhance hydrophilicity and oxidation resistance, and O v -TiO 2 nanoparticles function as “synaptic” sites to promote water dissociation and ion transport. This neuron-network-inspired synergy enables an outstanding response (26369) over a wide humidity range (11%-98% RH), a fast response time of 1 s, low hysteresis (2.24%), and robust flexibility (stable after 100 bending cycles). The sensor further demonstrates reliable non-contact interaction, real-time respiratory monitoring, and diaper wetness detection. This work offers a general biomimetic strategy to integrate structural and functional design for next-generation intelligent sensing systems.
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高影响因子
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