JOURNAL OF MATERIALS SCIENCE
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2026
·
IF 4.4
Zhang Han,Xu Chun,Xu Meng,Yuan Yan,Liu Jie,Dong Yanmao,Jiang Li
Self-healing anticorrosive coatings are essential for extending the lifespan of metallic materials in aggressive environments. This study presents a novel sandwich-structured coating composed of a polydopamine (PDA) inner layer, a ZIF-67 electroplated interlayer, and MXene/CNTs fillers incorporated into a waterborne acrylic epoxy (EA) matrix. The PDA layer enhances adhesion, while the ZIF-67 interlayer functions as an active inhibitor reservoir that responds to pH changes, releasing Co 2+ and 2-methylimidazole to promote defect repassivation and self-healing. The outer MXene/CNTs layer significantly improves barrier properties by forming a tortuous path for corrosive agents and enhancing interfacial stability. Compared with single-component coatings, the sandwich-structured composite coating exhibited markedly enhanced corrosion resistance in harsh acidic environment, with an obvious increase in corrosion potential. Moreover, a high R ct value of 1.79 × 10 5 Ω cm 2 was maintained by this coating even after 30 days of service, evidencing its durable protection. Under scratched conditions, the coating exhibits efficient self-healing, recovering its impedance and repassivating defects. This work demonstrates the synergistic benefits of the PDA/ZIF-67/MXene system, offering an effective solution for long-term corrosion protection with self-healing properties, suitable for various engineering applications.
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ACS Applied Materials & Interfaces
·
2026
·Vol. 18
·期 31
·42879-42890
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IF 7.8
Li Jian,Zhu Hongtao,Tang Zhaoyu,Li Junchun,Li Zhenyu,Yue Yu,Chang Yajing,Zhong Honghai,Tong Guoqing,Jiang Yang
Materials integrating electromagnetic interference (EMI) shielding and infrared (IR) stealth possess great application potential but face obstacles in large-scale production. Herein, MXene/sodium carboxymethyl cellulose (CMC-Na) composite ink is synthesized via facile, scalable vacuum ball milling. CMC-Na chains adhere to MXene through intermolecular hydrogen bonds; electrostatic repulsion restrains nanosheet stacking, while the coating hinders MXene oxidation. The ink exhibits outstanding machinability and can form uniform films on various substrates via screen printing or coating. At a MXene/CMC-Na mass ratio of 4:1, the film achieves balanced performance: a tensile strength of 82.84 MPa, an elongation at break of 2.67%, a toughness of 1.58 MJ·m – 3 , an EMI shielding effectiveness of 33 dB, and a specific shielding effectiveness of 37,260 dB·cm 2 ·g –1 . Low IR emissivities of 19.56% (3–5 μm) and 13.65% (8–14 μm) reduce the surface radiant temperature to 69 ° C under 150 ° C heating. Its layered structure combines surface and internal multiple reflections to reconcile EMI shielding and IR stealth. This low-cost scalable strategy supports the development of integrated shielding-stealth wearable electronic devices.
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ACS Applied Electronic Materials
·
2026
·Vol. 8
·期 15
·6695-6713
·
IF 4.7
Zheng Weihua,Hong Yingping
Addressing severe signal crosstalk, complex multi-layer stacking, and weak film-substrate interfacial adhesion remains a critical bottleneck for the practical deployment of flexible multimodal electronic skins. Herein, we report the rational design and scalable, fully printed fabrication of a structurally decoupled, single-layer 4 × 6 dual-modal tactile sensing array. By precisely tailoring the physical rheology and spatial dispersion of an MXene/AgNW/PVP composite ink, the macromolecular PVP network provides robust interfacial adhesion to the flexible substrate and steric stabilization against nanomaterial agglomeration. Concurrently, the 1D AgNWs bridge the 2D MXene flakes to construct a resilient intercalated network, completely eradicating the drying-induced microcracking typical of pristine MXene films. This interface-engineered composite enables a single continuous electrode layer to function simultaneously as a capacitive pressure-sensing matrix and an intrinsic thermistor. The sensor delivers a pressure sensitivity of 1.1 kPa –1 in the 0–100 kPa range, a linear temperature sensitivity of 0.18% ° C –1 , a response time of 35 ms, and stable operation over 10,000 loading cycles. By combining the physical microstructural isolation of the solid array units with a bivariate linear-regression decoupling algorithm, the inter-modal force-thermal cross-interference is reduced to below 1%. Using the decoupled spatial matrices, a Support Vector Machine (SVM) model recognizes complex thermo-mechanical targets with an accuracy of 96.8%. Furthermore, the conformable array enables continuous, noninvasive epidermal pulse-wave and temperature monitoring, providing an integrated material-to-system approach for smart wearable healthcare and artificial prosthetics.
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Journal of Water Process Engineering
·
2026
·
IF 6.6
Xinyu Jia,Ruihao Wang,Qian Li,Xiyan Sun,Shuxian Li,Li Wei,Yu Tian,Jiangdong Xiang,Xitong Sun
In this work, a multifunctional adsorbent based on zwitterion modified Ti 3 C 2 T x MXene (MPI) was synthesized by surface grafting polymerization, followed by modification with polyethylenimine and sodium chloroacetate. This adsorbent exhibited a high density of functional groups, switchable surface charge characteristics and plenty of active sites of iminoacetic acid chelating groups. Subsequently, methylene blue, congo red, Pb(II), and Cr(VI) were selected as model compounds for cationic/anionic dyes and heavy metal ions to estimate the adsorption performance. The material exhibited exceptional adsorption capacities, and the maximum adsorption capacities were determined as 479.8 mg/g for methylene blue, 481.9 mg/g for congo red, 300.6 mg/g for Pb(II) and 265.9 mg/g for Cr(VI), respectively. Adsorption equilibrium was reached within 10–120 min and the adsorbent showcased excellent removal efficiency. Moreover, the adsorbent demonstrated excellent reusability，with no significant changes after ten consecutive adsorption-desorption cycles. Mechanism studies revealed that electrostatic attraction and chelation played dominant roles in the adsorption process. These results suggest that MPI possesses advantages of simple preparation, multifunctional integration, high adsorption performance, and good stability, making it a promising universal adsorbent for the removal of both dyes and heavy metal ions from wastewater.
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Small
·
2026
·
IF 11.8
Wenkang Xu,Zhiyang Yu,Hongxiao Yang,Xiaoyan An,Chao Peng,Guangxing Yang,Hao-Fan Wang,Yonghai Cao,Hongjuan Wang,Hao Yu
Functioning as nanoscale “conductors”, 2D transition metal carbides (MXenes) orchestrate interfacial charge-carrier transport between semiconductors. This capability enables precision-engineered control over photocatalytic processes by regulating charge-carrier separation and migration dynamics. However, existing techniques inadequately resolve photogenerated carrier dynamics, hindering rational MXene photocatalyst design. This study addresses this limitation using in situ nanoscale imaging with Kelvin probe force microscopy (KPFM) on a model TiO 2 @MXenes system. We demonstrate that the charge transfer direction is governed by work function ( W F ) difference, allowing for utilizing MXenes as electron- or hole-accepter by tuning the work function of MXenes. Glycerol treatment increases surface ─OH density, lowering MXene W F to 1.31 eV and strengthening hole-extracting electric fields. By doing so, Pt/TiO 2 modified with low- W F MXenes, showing 70.7%–91.7% reduction in charge transfer resistance, displayed the electron-hole transport, which vastly outperforms the electron-electron transport mode. This work offers a quantitative design paradigm linking surface terminations to W F to carrier transport pathways for developing efficient MXene-based heterojunction photocatalysts.
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Advanced Healthcare Materials
·
2026
·
IF 11
Xin Chen,Zhongxue Lin,Hao Lei,Yuan Qin,Feng Xu,Lei Xie,Zuolin Jin
Periodontitis, a chronic inflammatory disease driven by bacterial dysbiosis and oxidative stress, remains a major clinical challenge due to its complex pathogenesis and the lack of effective regenerative therapies. Here, we engineer an intelligent pH-responsive MXene-based nanosystem (MPDM) integrating polyethyleneimine (PEI) for pathogen-derived cfDNA capture, methyltransferase-like 3/14 (METTL3/14) for m6A-mediated osteogenic reprogramming, and 2,3-dimethylmaleic anhydride (DMMA) for dynamic charge-shielding to enhance targeting of inflammatory sites targeting. In vitro studies reveal that MPDM exhibits synergistic antibacterial activity, potent reactive oxygen species (ROS) scavenging capacity, and inflammation-triggered payload release. In a murine ligature-induced periodontitis model, micro-CT analysis revealed that MPDM reduced alveolar bone loss and increased the bone volume fraction by 32% (from 53% to 85%) compared to the diseased (Untreated) group. Transcriptomic analysis further reveals that MPDM downregulates toll-like receptor (TLR) and neutrophil extracellular trap (NET) formation signaling pathways, while suppressing osteoclast differentiation. By concurrently neutralizing pathogenic triggers and activating tissue repair, this work establishes a framework for next-generation nanotherapeutics in inflammatory bone disorders, with potential applicability to other multifactorial diseases.
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INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2026
·
IF 3.9
Li Liu,Xinyu Liu,Xiaolin Wang,Zhifei Wu,Yahua Liu,Deqing Liu,Xu Zhang,Dawei Zhang
Monovalent cation exchange membranes (MCEMs) are central to selectrodialysis (SED), which enables precise ion fractionation. In this study, a novel type of MCEMs were designed for the separation of mixed acid/salt systems via SED. The membranes were fabricated by first doping Ti3C2TX nanosheets into a sulfonated polysulfone (SPPSU) matrix, followed by spray-coating quaternized poly(2,6-dimethyl-1,4-phenylene oxide) (QPPO) layers synthesized from brominated polyphenylene oxide and tertiary amines with varying alkyl chain lengths. The incorporation of 0.5 wt % Ti3C2TX into SPPSU (yielding the SPPSU-T membrane) enhanced the ion exchange capacity by 1.10-fold (to 1.53 mmol·g–1) and water uptake by 1.01-fold (to 16.10%) relative to the pristine SPPSU membrane, resulting in a reduced area resistance (2.08 vs 2.14 Ω·cm–2) and a 1.30-fold increase in H+ flux (7.31 × 10–8 mol·cm–2·s–1). Although the optimized SPPSU-T-QPPO18-1.02 (coated with 1.02 g·m–2 of QPPO quaternized with N,N-dimethyldodecylamine) exhibited a 3.11-fold increase in area resistance compared to the pristine SPPSU-T membrane, it had a 12.32-fold higher H+/Mg2+ selectivity (PMgH = 87.59). Moreover, the SPPSU-T-QPPO18-1.02 also achieved 14.23-fold and 5.13-fold higher selectivity for H+ over Zn2+ (PZnH = 29.32) and Fe2+ (PFeH = 9.149), respectively, compared to SPPSU (PZnH = 2.06, PFeH = 1.78). In the three investigated acid/salt systems, the SPPSU-T-QPPO18-1.02 delivered competitive H+ flux (6.97∼8.78 × 10–8 mol·cm–2·s–1) and selectivity (9.14∼87.59) compared to the commercial CIMS membrane (flux: 6.00∼8.68 × 10–8 mol·cm–2·s–1; selectivity: 1.98∼4.11). Furthermore, it demonstrated excellent long-term operational stability in SED processing of MgCl2/HCl mixtures. This work demonstrates that incorporating Ti3C2TX nanosheets into the membrane matrix and coating with a tailored QPPO layer can synergistically overcome the trade-off between ion flux and selectivity in MCEMs, providing an effective strategy for advanced membrane design.
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CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Jiaxin Li,Yinlu Dong,Yu Wang,Xiangcao Chang,Jicui Wen,Yuhang Zhang,Wenhua Zhu,Lichan Xiao,Ruohan Guo,Chaoran Li,Zhiyun Meng,Ruolan Gu,Hui Gan,Guifang Dou,Shuchen Liu,Yunbo Sun
The efficient treatment of radioactive uranium-containing wastewater is crucial for environmental safety and sustainable development. Developing high-performance organic-inorganic hybrid materials is recognized as an effective strategy for remediating radioactive wastewater. However, these materials face challenges in solid-liquid separation during practical applications, which significantly restrict their widespread use in uranium extraction from wastewater. To address this, we designed and synthesized a novel self-supporting composite membrane (MXene-AP-HOPO) by covalently conjugating silanized MXene nanosheets (modified with APTES) with carboxylated HOPO monomers via amidation. This design overcomes the limitations of traditional powdered adsorbents, such as difficult solid-liquid separation and propensity for aggregation, thereby providing a reliable material for the rapid and efficient extraction of uranium from aquatic systems.The MXene-AP-HOPO exhibit excellent uranium adsorption capacity (256 mg/g), remarkable adsorption selectivity, favorable antioxidant properties, and good reusability. The adsorption behavior of UO₂ 2+ onto the MXene-AP-HOPO is well-fitted by the Langmuir adsorption isotherm model and pseudo-second-order kinetic model. The detailed adsorption mechanism was systematically investigated using X-ray photoelectron spectroscopy (XPS), extended X-ray absorption fine structure (EXAFS), and density functional theory (DFT) analyses. The results indicate that the efficient adsorption of UO 2 2+ by MXene-AP-HOPO is mainly ascribed to the complexation between UO 2 2+ and the C–OH and C=O groups of HOPO monomers on the membrane surface, together with minor redox effects and electrostatic adsorption from the MXene matrix.This work not only demonstrates a highly promising material for uranium remediation but also provides a general membrane design strategy for advanced environmental applications.
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Advanced Healthcare Materials
·
2026
·
IF 11
He-Ping Zuo,Jia Yang,Wei Zhao,Min Yang
Sepsis-associated intestinal injury represents a critical pathological event contributing to multiple organ dysfunction, with its pathogenesis closely linked to excessive oxidative stress and hyperactivated endoplasmic reticulum stress. Current clinical interventions lack the capacity for precise modulation of the intestinal microenvironment, while existing nanozyme systems generally face challenges such as low oral delivery efficiency, insufficient stability, and uncertain biosafety. To address these limitations, we developed a novel oral nanozyme delivery system based on 2D V 2 C MXene. Through surface modification with hydroxyethyl cellulose (HEC), we constructed a V 2 C@HEC (CV) nanozyme with enhanced physiological stability and intestinal mucoadhesion. In both in vitro and in vivo studies, the CV nanozyme demonstrated significant reactive oxygen species (ROS)-scavenging capacity. Oral administration of CV effectively mitigated intestinal barrier damage and improved survival in a septic mouse model. Mechanistic investigations suggested that the protective effects of CV may be associated with ROS clearance and modulation of endoplasmic reticulum stress, with inhibition of the ATF6/CHOP signaling pathway potentially serving as one underlying mechanism for its cytoprotective function. In summary, this study not only presents a novel nanozyme material with favorable biocompatibility, excellent stability, and a defined antioxidant mechanism, but also provides an innovative materials-based strategy for the treatment of sepsis.
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Advanced Healthcare Materials
·
2026
·
IF 11
Jingwen Zhang,Zeqian Wang,Bingjie Mai,Shuyu Wang,Rui Liu,Zhe Jian,Ziwei Deng
Recent advancements in skin bioelectronics have significantly transformed personalized daily healthcare monitoring and wound management. Consequently, the development of advanced smart wound-dressing systems, such as bioelectronics-integrated wound dressings, has the potential to address numerous clinical challenges associated with effective wound management. Herein, we introduce a versatile Janus film composed of MXene@PEDOT:PSS and bacterial cellulose (designated as MPP/BC), developed as an innovative and adaptable bioelectronics-integrated wound dressing. This material is designed to enhance skin bioelectronics for health monitoring while facilitating accelerated wound healing. The resulting MPP/BC Janus film exhibits remarkable flexibility, high conductivity, photothermal sterilization capabilities, and excellent biocompatibility. These essential characteristics render it suitable for integration into a versatile epidermal sensor capable of real-time monitoring of various human physiological signals. Furthermore, this MPP/BC Janus film-based wound dressing demonstrates significant potential in enhancing therapeutic efficacy to promote wound healing by facilitating epithelial regeneration and increasing collagen deposition. Consequently, this study introduces a promising strategy for developing advanced smart wound-dressing systems aimed at accelerating and optimizing the wound healing process. This bioelectronics-integrated wound dressing holds significant potential for applications in skin bioelectronics, particularly in continuous health monitoring and intelligent wound management.
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JOURNAL OF ALLOYS AND COMPOUNDS
·
2026
·
IF 6.7
Jinting Chen,Lei Wang,Ming Yao,Yue Pan,Zeyu Zhang,Yawei Li,Haixiang Huang,Bogu Liu,Jianguang Yuan,Bao Zhang,Ying Wu
To address the sluggish dehydrogenation kinetics and high operating temperatures of LiBH 4 , Ti 2 VC 2 MXene was incorporated with LiBH 4 to modify its dehydrogenation performance. With 40 wt% Ti 2 VC 2 MXene additive, the onset dehydrogenation temperature of LiBH 4 is reduced to 98.31 °C, while the peak hydrogen release occurs at 332.86 °C. Isothermal dehydrogenation measurements demonstrate that the composite rapidly desorbs 9.50 wt% H 2 within 40 min at 325 °C, 10.67 times faster than that of LiBH 4 . Furthermore, the addition of 40 wt% Ti 2 VC 2 MXene effectively lowers the activation energies for the dehydrogenation to 104.76 and 112.99 kJ mol⁻ 1 , respectively. Mechanism studies reveal that the enhanced dehydrogenation performance originates from the in-situ formation of catalytic active species, including Ti 0 , V 0 and Li 3 BO 3 , promoting the cleavage of ionic and covalent bonds in LiBH 4 . Simultaneously, the multiphase Ti/V/Li 3 BO 3 hetero-ensembles create abundant interfacial boundaries, serving as efficient pathways for hydrogen diffusion and accelerating the dehydrogenation kinetics.
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Journal of Cleaner Production
·
2026
·
IF 10.7
Junqi Wang,Xiangjun Liu,Jingjing Ma,Hu Xu,Kuankuan Liu,Yuxin Wei
Transitioning toward sustainable energy systems requires H 2 production routes that are both efficient and environmentally responsible. In this work, biomass-based photocatalytic H 2 production was systematically investigated by integrating catalyst synthesis optimization with environmental assessment. A CdS-based photocatalyst modified with Ti 3 C 2 T x MXene was synthesized via an ultrasound-assisted approach, and the effects of ultrasonication conditions, catalyst loading, and reaction temperature on photocatalytic performance were evaluated. Under optimized conditions, the MXene/CdS photocatalyst achieved a H 2 production rate of 16.212 mmol g −1 ·h −1 with good cycling stability. To assess the environmental implications of different experimental strategies and operating conditions, a cradle-to-gate life cycle assessment was conducted and complemented by outdoor photocatalytic tests under natural sunlight. The results indicate that moderate ultrasonication, appropriate catalyst dosage, and optimized reaction temperature can effectively reduce environmental burdens. Variations in solar availability further influence environmental performance, highlighting the combined importance of process optimization and realistic operating conditions. Overall, this study demonstrates that coupling photocatalytic performance optimization with environmental assessment provides a more comprehensive understanding of the opportunities and limitations of biomass-based H 2 production.
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