COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2018
·
IF 2.829
Kaikai Li,Guodong Zou,Tifeng Jiao,Ruirui Xing,Lexin Zhang,Jingxin Zhou,Qingrui Zhang,Qiuming Peng
The chemical modification and organized self-assembly of MXene-based nanocomposites demonstrate critical importance to a wide range of material applications. Herein, we have investigated the preparation of new hierarchical core-shell type MXene-based composite materials for high-efficient dye removal in wastewater treatment via layer-by-layer (LbL) strategy. From the carboxyl functionalization of the MXene material, the negative functional groups were obtained on the surface of the shell composite layer. Carboxyl functionalized MXene materials are immersed in polyimide and polyacrylic acid solution respectively, which leads to formation of shell structure on the surface of MXene layer. Alternating self-assembly processes in the solutions of the polyimide and polyacrylic acid polymers are investigated until the desired number of shell layers is fabricated around MXene layer structures. Finally, the core-shell nanocomposites were characterized by morphological and spectral techniques, demonstrating that the core-shell nanocomposites have more reaction sites and mesoporous structures. The as-obtained core-shell nanocomposites were evaluated with well adsorption capacities via three kinds of dyes. Thus the study of MXene based composites assembled by LbL provides a new choice for the application of MXene composite nanomaterials in wastewater treatment.
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高影响因子
Advanced Science
·
2026
·
IF 14.1
Xiaopeng Cai,Jingwen Deng,Liqing Wang,Junjie Su,Dongyi Xian,Yilang Yan,Xinyu Yang,Chuanbin Wu,Tingting Peng,Yuan Ding,Guilan Quan,Weilin Wang,Min Zhou,Chao Lu
Acetaminophen-induced liver injury (AILI) is a major cause of acute liver failure, yet single-target therapies like N-acetylcysteine remain inadequate due to its complex pathogenesis. To address this challenge, we propose a dual-action defense-regeneration strategy that concurrently blocks multi-death pathways and promotes hepatocyte regeneration. Specifically, the therapeutic metal gallium is doped into V 2 C MXene nanozymes (Ga-V 2 C) to surpass conventional nanozymes by integrating sustained antioxidant activity for death signaling blockade, multi-pathway regulation of cell death networks, and activation of pro-regenerative molecules. In vivo, Ga-V 2 C nanozymes exhibited superior protective efficacy over N-acetylcysteine against AILI. Mechanistic investigations revealed that the Ga-V 2 C nanozymes disrupt the synergistic amplification of liver injury by simultaneously inhibiting three key death pathways: oxidative stress (via ROS scavenging, reduce JNK phosphorylation, and activated Nrf2/HO-1), apoptosis (via restored Bcl-2/Bax balance), and ferroptosis (by suppressed iron-dependent lipid peroxidation and upregulated SLC7A11/FTH1/FTL1). Notably, Ga-V 2 C nanozymes fostered a pro-regenerative microenvironment by activating Wnt/βCAT pathways signaling and key cell cycle drivers (CCND1, MYC, PCNA), thereby enhancing hepatocyte regeneration. This work not only offers a promising therapeutic approach for AILI but also significantly expands the scope of nanozyme-based therapeutics for complex diseases requiring multi-target intervention.
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高影响因子
Nature Communications
·
2026
·
IF 15.7
Huang Chaojie,Chen Ying,Zhang Tengyuan,Gao Enlai,Wang Yongheng,Xia Guo,Li Mingshan,Lian Wangwei,Deng Xuliang,Wan Sijie,Cheng Qunfeng
Assembling titanium carbide MXene nanosheets into macroscopic high-performance fibers is very challenging because of the voids caused by transverse wrinkles, hindering their practical applications in wearable smart textiles. Here we continuously fabricate ultrastrong MXene fibers by coaxial-wet-spinning-assisted radial confining integrated with roll-to-roll-assisted axial stretching under near room temperature. Wet-spun MXene fibers are bridged with calcium ions and radially confined to reduce the voids resulting from transverse wrinkles by an in-situ bridged sodium alginate encapsulation layer, followed by stretching to axially align nanosheets. The resultant MXene fibers provide record tensile strength (958 MPa) and electrical conductivity (13,692 S cm -1 ). Large-area textiles made from the MXene fibers present extraordinary electromagnetic interference shielding capacity (6,509 dB cm -1 ). The proposed strategy opens an avenue for scalable assembling other two-dimensional nanosheets into high-performance fibers.
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International Journal of Minerals Metallurgy and Materials
·
2026
·Vol. 33
·期 5
·1371-1385
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IF 8.8
Zhao Ruolin,Li Jun,Ding Sizhi,Fan Yi,Liu Haizhen,Guo Jin,Lan Zhiqiang
We employed a one-step hydrothermal method to in situ grow spherical NiS 2 nanoparticles on the surface of MXene, successfully constructing a NiS 2 –MXene hybrid composite. This study demonstrates that the integration of a NiS 2 –MXene hybrid composite into MgH 2 substantially improves its hydrogen storage performance. Specifically, the composite reduces the initial dehydrogenation temperature of MgH 2 by 118°C, lowering it from 310°C (pure MgH 2 ) to 192°C. At 300°C, it can release 5.87wt% of hydrogen within 12 min. Furthermore, it demonstrates the ability to absorb hydrogen under ambient temperature conditions, with approximately 2.96wt% of hydrogen being absorbed as the temperature increases from room temperature to 50°C. The activation energies for hydrogenation and dehydrogenation of the NiS 2 –MXene–MgH 2 composite reduced by 33.7 and 40.6 kJ·mol −1 , respectively, in comparison to those of pure MgH 2 . Mechanistic studies demonstrate that NiS 2 –MXene enhances hydrogen storage performance through multiple synergistic effects. Specifically, the multivalent titanium in MXene establishes efficient electron transport pathways, promoting hydrogen binding and dissociation. Moreover, the in situ formation of Mg 2 Ni/Mg 2 NiH 4 and MgS creates numerous phase interfaces, offering abundant active sites that facilitate both the dissociation and recombination of hydrogen molecules. Furthermore, the high specific surface area of MXene effectively inhibits agglomeration between the catalyst and Mg/MgH 2 , thereby maintaining structural stability and reactivity.
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Materials
·
2026
·Vol. 19
·期 12
·2537
·
IF 3.7
Jitong Ren,Ronghui Dan,Yanyan Guo,Jiang Zhao
Indispensable roles in personalized health monitoring and human–machine interaction are played by flexible humidity sensors. However, high costs and complex vacuum processes are often involved in current fabrication methods, thereby restricting their broader applications. In this work, a high-performance flexible capacitive humidity sensor is presented, wherein a ternary composite of graphene oxide, PEDOT:PSS, and MXene (GO-PEDOT:PSS-MXene) is loaded onto a laser-induced graphene (LIG) interdigitated electrode. A pronounced synergistic effect among the three components is systematically exploited by this multidimensional architecture to significantly optimize the overall sensing performance. Within a relative humidity range extending from 11% to 97%, a remarkable measurement sensitivity of 18,643.02 μF/%RH is recorded. Furthermore, a characteristic negative capacitive response is consistently induced by moisture-driven microstructural swelling, by which the internal interlayer spacing is increased. The continuous monitoring of human respiratory rhythms and precise non-contact spatial sensing is successfully enabled by rapid response and recovery times of 31.7 s and 11.2 s, respectively. Uniquely, a vacuum-free, synergistic multidimensional architecture is successfully utilized to achieve an ultrahigh sensitivity. Practically, a highly scalable and low-cost paradigm is established by this research for the mass deployment of future wearable electronic systems across diverse monitoring scenarios.
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MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
·
2026
·
IF 5.2
Wenjuan Zhang,Chunhui Li,Xiangyue Yang,Zhenghao Song,Youliang Wang,Yiming Zhang,Zhiqi Feng,Peiqing La
The escalating threat of heavy metal pollution to both environmental integrity and public health underscores the urgent need to develop accessible, and highly efficient analytical methods. In this study, we propose a facile reduction-oxidation strategy for fabricating MXene quantum dots (r-MQDs) with high sensitivity toward Fe 3+ detection. The synthesis process involves the oxidative cleavage of MXene via H 2 O 2 -assisted hydrothermal treatment to yield quantum dots, followed by chemical reduction with NaBH 4 . The r-MQDs exhibit excellent fluorescence quantum yields, attributed to both strong quantum confinement effects and reduced non-radiative losses. Fe 3+ efficiently suppresses the fluorescence of r-MQDs through a cooperative mechanism where static quenching and the inner filter effect operate in tandem. The fluorescent probe exhibits a linear response to Fe 3+ in the range of 0.8 - 1.0 mM, along with a notably low detection limit of 5 nM. This study elucidates the selectivity mechanism of MQDs as fluorescent probes for metal ions and broadens the application prospects of MXene-based quantum dots for sensing.
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2026
·
IF 9.1
Qingping Xin,Yufei Wang,Wei Huang,Shuo Li,Xingwei Wang,Jiaxin Wu,Dengdi Wu,Mengke Wang,Huiguo Wang,Ningning Gao,Xiaoli Ding,Yuzhong Zhang
Two-dimensional (2D) lamellar membranes with sub-nanometer channels hold promise for precise gas separation, but tuning interlayer spacing at the sub-angstrom scale while synergizing solution-diffusion and molecular sieving remains challenging. Here we report the confinement of an ionic liquid (IL), 1-butyl-3-methylimidazolium tetrafluoroborate ([BMIM][BF 4 ]), within the galleries of few-layer Al@Ti 3 C 2 T x nanosheets to create ionic liquid-confined lamellar MXene membranes (Al@Ti 3 C 2 T x -ILLMMs). The residual Al 3+ species in the nanosheets stabilize the interlayer architecture through electrostatic interactions, while the abundant surface terminations (-F, -OH) render the nanosheets negatively charged, promoting uniform IL distribution. By precisely controlling the IL loading via an equilibration–spin-coating approach, the interlayer spacing is continuously tunable from 0.309 to 0.375 nm. The optimal channel height of 0.342 nm lies within the gap between the kinetic diameters of CO 2 (0.33 nm) and N 2 (0.36 nm), closer to that of CO 2 . This precision engineering shifts the gas transport mechanism from Knudsen diffusion to a coupled solution-diffusion and size-sieving regime. The resulting membrane achieves a CO 2 permeance of 150 GPU and a CO 2 /N 2 selectivity of 128.5, representing 4.5-fold and 109-fold improvements over the pristine MXene membrane and offering a favorable balance compared to reported IL-supported membranes. The demonstrated quantitative loading-spacing correlation provides a designable platform for sub-angstrom channel engineering in 2D material membranes.
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DESALINATION
·
2026
·
IF 9.9
Zhiyun Jiang,Junyi Pan,Yin Liu,Lixiao Ni,Shiyin Li
A novel MXene@TiO 2 /CNT composite membrane was fabricated for efficient photothermal membrane distillation. • The optimized membrane showed high vapor flux and solar-vapor conversion efficiency. • The membrane shows outstanding long-term stability and efficient desalination for high-salinity feeds and real seawater. • CFD simulation confirms superior interfacial heat localization and uniform mass transfer for scalable PMD applications. The escalating global freshwater scarcity necessitates the development of energy-efficient and sustainable desalination technologies. Membrane distillation (MD) offers promise for treating hypersaline brines but suffers from high thermal energy demand and temperature polarization, limiting its practical application. Photothermal membrane distillation (PMD) has emerged as a viable alternative by leveraging solar-driven interfacial heating to enhance thermal efficiency. However, conventional PMD systems often exhibit limited water flux due to narrow light absorption, inefficient thermal management, and mass transfer resistance. In this study, we developed a high-performance composite membrane by integrating partially oxidized MXene@TiO 2 heterostructures with an interwoven carbon nanotube (CNT) network on a porous PTFE substrate. The MXene@TiO 2 nanocomposites were synthesized via controlled oxidation using peroxymonosulfate, which introduced TiO 2 nanoparticles as intercalating spacers to expand nanochannels and facilitate vapor diffusion. The resulting membrane demonstrated broad-spectrum solar absorption and exceptional solar-vapor conversion efficiency. Under simulated one-sun irradiation, the membrane achieved a vapor flux of 3.03 kg/m 2 ·h, representing a 332.9% enhancement over non-illuminated conditions. Long-term stability and effective desalination of high-salinity feeds were also demonstrated, highlighting the potential of this membrane for sustainable solar-driven water purification. Download: Download high-res image (389KB) Download: Download full-size image
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JOURNAL OF APPLIED POLYMER SCIENCE
·
2026
·
IF 3.1
Xiaofei Yan,Ye Liu,Jie Fang,Zhiqin Jin,Jianghua Wu,Hua Shen
Regenerated silk fibroin (RSF) fibers have garnered significant attention due to their remarkable biocompatibility and tunable biodegradability. However, their relatively poor mechanical performance limits their broader applications. Herein, we propose a simple and scalable one-step wet spinning approach to fabricate high-performance RSF composite fibers by incorporating two-dimensional Ti 3 C 2 T x MXene nanosheets and Ca 2+ ions. The synergistic reinforcement of Ca 2+ -induced and MXene-assisted β-sheet formation significantly enhanced the structural integrity and mechanical properties of the RSF fibers. The resulting composite fibers exhibited a high tensile strength (~234.1 MPa), improved thermal stability (MAXDTG ~ −2.1%/min), and increased glass transition temperatures (~179.0°C). In addition, both the microscopic morphology and the mechanical properties showed that the mechanical properties of the composite fiber are further enhanced after 2× stretching.
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WATER RESEARCH
·
2026
·
IF 12.8
Luobin Tang,Xin Gao,Xinyu Liang,Xiayu Zhu,Renzong Liu,Shaofeng Wang,Xiangfeng Zeng,Yongfeng Jia,Bart Van der Bruggen,Patricia Luis Alconero,Qieyuan Gao
Biological ion channels realize exceptional selectivity for transition metal ions through the synergistic effects of angstrom-scale confinement and highly specific ligand-ion coordination. Inspired by this molecular recognition principle, we develop mercaptosuccinic acid (MSA) functionalized Ti 3 C 2 Tx MXene biomimetic nanochannel membranes that operate under a coordination-dominated ion transport pattern. The introduction of MSA induces chemically regulated angstrom-scale nanochannels with stabilized hydrated spacing, thereby effectively suppressing structural swelling in aqueous environments. In this system, highly selective separation of Cd 2+ or Ni 2+ is achieved mainly through specific coordination between thiol-carboxyl functional groups and transition metal ions, with K + /Cd 2+ and K + /Ni 2+ selectivity reaching ∼10 3 . By contrast, the K + /Mg 2+ selectivity is much lower. Theoretical calculations reveal that strong coordination interactions between transition metal ions and MSA functional groups impose significantly elevated translocation energy barriers, effectively immobilizing Cd 2+ and Ni 2+ within the confined channels, while K + and Mg 2+ experience weaker interactions and retain facile transport pathways. The selective accumulation of divalent ions at channel entrances reflects the combined effects of strong ligand-ion interactions and high dehydration barriers. This work establishes a thiol-carboxyl coordination-dominated transition metal ion recognition pattern in angstrom-confined two-dimensional nanochannels and provides a theoretical basis for the rational design of artificial ion channels with programmable selectivity.
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Nano-Micro Letters
·
2026
·Vol. 18
·期 1
·428
·
IF 38.5
Feng Yuhao,Zhao Jindi,Chen Keke,Li Yang,Liu Jiao,Yu Huitao,Qin Mulin,Jia Kaihang,Han Haiwei,Shen Zhenghui,Ma Mingliang,Chen Xiao
Designing multifunctional materials integrating efficient photoresponsive thermoelectric cogeneration with microwave absorption remains challenging for clean solar energy utilization and electromagnetic interference mitigation. Herein, this study proposes an innovative design strategy combining interfacial bridging engineering and physical encapsulation to construct advanced multifunctional composite phase change materials (PCMs). A nanoparticle-bridged 3D interpenetrating phonon network is constructed via in-situ growth of CuS nanoparticles on layered MXene, creating abundant interfacial sites for polyethylene glycol (PEG) adsorption and efficient electron transport channels for electromagnetic loss. The resulting PEG-MXene@CuS composite PCMs achieve an exceptional photothermal conversion efficiency of 94.5% (100 mW cm −2 ), enabled by broadband absorption of MXene nanosheets and plasmonic effect of CuS nanoparticles. In photoresponsive thermoelectric cogeneration system, PEG-MXene@CuS serves as a heat source to drive thermoelectric module through the Seebeck effect, yielding a stable power output of 21.7 W m −2 (100 mW cm −2 ), with PEG effectively buffering thermal fluctuations. Moreover, MXene@CuS heterointerface and 3D conductive network endow PEG-MXene@CuS with superior microwave absorption, a minimum reflection loss of − 55.5 dB and an effective bandwidth of 5.27 GHz. This design concept provides important insights into designing next‑generation multifunctional PCMs with promising applications in intelligent thermal management, thermoelectric cogeneration, and electromagnetic protection.
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MICROCHEMICAL JOURNAL
·
2026
·
IF 5.2
Jinping Tang,Fuqiang Qian,Yuhai Wang,Chunxu Wang,Yuan Chai,Dewen Kong,Jin Wang
By integrating the photonic nanojet effect of polystyrene microsphere (PS), the charge transfer capability of MXene nanosheets, and the electromagnetic field enhancement induced by Ag nanoparticles, the PS@MXene@Ag composite substrate exhibited outstanding SERS sensitivity. • The SERS performance of the PS@MXene@Ag substrate was evaluated using 2-mercaptopyridine as a probe molecule, achieving a detection limit as low as 1.24 × 10 −12 M, with the SERS performance factor (SPF) up to 5.0 × 10(Gueguen et al., 2000 [7] ) . In addition, the SERS substrate demonstrated satisfactory results in signal uniformity, batch-to-batch reproducibility, and long-term stability. • PS@MXene@Ag composite successfully detected thiram and methyl blue on practical sample surfaces (orange and fish), achieving satisfactory recovery rates. Surface-enhanced Raman scattering (SERS) spectroscopy has emerged as a powerful analytical technique for the sensitive detection of hazardous molecules, owing to its ultranarrow spectral linewidths and highly specific molecular fingerprinting capability. Herein, we designed a reliable SERS substrate consisting of polystyrene microspheres (PS), Ti 3 C 2 T x MXene nanosheets, and Ag nanoparticles (NPs) for the sensitive detection of various organic pollutants. By integrating the photonic nanojet effect of PS, the charge transfer capability of MXene nanosheets, and the electromagnetic field enhancement induced by Ag NPs, the PS@MXene@Ag composite substrate exhibited outstanding SERS sensitivity, along with excellent reproducibility and signal uniformity. As a result, the limit of detection (LOD) for 2-mercaptopyridine (2-Mpy) was as low as 1.24 × 10 −12 M, with the SERS performance factor (SPF) of up to 5.0 × 10 7 . Moreover, the SERS substrate maintained good stability after storage for four weeks. In addition, the PS@MXene@Ag composite was successfully applied to the detection of other organic pollutants, including thiram and methylene blue (MB). The calibration results revealed a good linear relationship between the logarithm of concentration and the corresponding SERS intensity, with correlation coefficients (R 2 ) of 0.99 and 0.98, respectively. The LODs for thiram and MB were calculated to be 1.96 × 10 −10 M and 2.33 × 10 −10 M, respectively, and satisfactory recovery rates were obtained in practical sample analyses (orange peel and fish skin). These results demonstrate that the fabricated PS@MXene@Ag SERS substrate has promising potential for the detection of organic molecular pollutants. Download: Download high-res image (129KB) Download: Download full-size image PS@MXene@Ag as a SERS-active substrate for the detection of organic pollutants.
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