Analytical Methods
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2025
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IF 2.6
Dongju Liu,Kunlan Diao,Yu Xue,Daohai Zhang
To efficiently treat dyeing wastewater, this study adopted an innovative method to prepare MXene nanocomposite nanofiltration membranes, with a focus on investigating the performance of the PVDF/EAA/MXene nanofiltration (C-3) composite membrane treated via interfacial polymerization. The results indicated that the C-3 membrane possesses both excellent surface properties and separation performance: its pure water permeability reaches 27.36 L m−2 h−1, the rejection rate for bovine serum albumin (BSA) is 94.23%, and the rejection rates for Congo red and methylene blue dyes are as high as 99.43% and 99.81%, respectively. Meanwhile, the membrane exhibits outstanding anti-fouling capability, with a flux recovery rate (FRR) of 88.5% and a total fouling rate (DRt) of 19.21%. Furthermore, long-term stability tests (conducted 10 times repeatedly over 10 days) showed that the membrane demonstrates excellent filtration performance and stability in retaining BSA, Congo red, and methylene blue.
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Materials Today Nano
·
2025
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IF 8.2
Shuangshuang Liu,Yinghao Liu,Xiangnan Wang,Bo Wang,Sijie Guo,Xue Bai,Jian Tian,Nannan Wu,Jiurong Liu
The rapid evolution of wireless technologies has intensified electromagnetic (EM) pollution, promoting the application of advanced multifunctional shielding materials. Herein, we developed aramid fiber (AF) based composite fabrics by sequentially loading Ti 3 C 2 T x MXene nanosheets and silver nanowires (AgNWs) onto fabric substrates. The optimized AF/MXene/AgNWs structure exhibits exceptional electromagnetic interference (EMI) shielding effectiveness of 63.93–96.75 dB in the X-band, coupled with superior shielding efficiency (SSE/t) of 3995–5183.03 dB cm 2 g −1 at a thickness of 0.34 mm. This performance stems from synergistic conductive networks formed by MXene and AgNWs, enabling multi-scale EM wave attenuation through reflection, ohmic loss, and interfacial polarization. Beyond EMI shielding, the composite demonstrates integrated multifunctionality including infrared stealth capability, rapid electrothermal response, precise photothermal regulation, antibacterial efficacy, and flame retardancy. The encapsulation of polydimethylsiloxane (PDMS) further ensures environmental stability, and the fabrics maintained 94.3 % EMI shielding (48.93 dB) after 30 days of oxidation. The EMI shielding efficiency was maintained at 47.98 dB after salt-spray corrosion for 48 h. With excellent mechanical flexibility, this multifunctional fabric presents significant potential for next-generation wearable electronics, medical thermal therapy systems, and aerospace applications.
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INORGANIC CHEMISTRY COMMUNICATIONS
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2025
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IF 5.4
Jiawei Deng,Sai Teng,Dan Li,Jiren Yuan,Feigao Xu
In this study, novel magnetic Fe 3 S 4 /Ti 3 C 2 MXene composites were successfully synthesized via a hydrothermal method and employed as a highly efficient photo-Fenton catalyst for the degradation of tetracycline hydrochloride (TCH). The optimized composite (Fe 1 M 0.5 ), with a Fe 3 S 4 : Ti 3 C 2 MXene mass ratio of 1:0.5, exhibited exceptional catalytic performance under visible light, achieving a TCH removal efficiency of 93.9 % within 90 min (pH = 4.2, 10 mM H 2 O 2 , 0.3 g L −1 catalyst). The introduction of Ti 3 C 2 MXene significantly mitigated Fe 3 S 4 agglomeration, enhanced charge carrier separation, and broadened the operational pH range (2.2–7.2). Mechanistic studies revealed that the TCH degradation process was dominated by the synergistic effects of •OH, •O 2 − , h + , and e − dominated, which were facilitated by the Fe 3+ /Fe 2+ and Ti 4+ /Ti 3+ redox cycles as well as the formation of Schottky heterojunction. The composite demonstrated robust stability (>80 % TCH degradation efficiency after five cycles) and versatility in degrading diverse pollutants (e.g., RhB, MB). Magnetic characterization confirmed its easy recovery (10 emu g −1 saturation magnetization), and interference tests indicated a high tolerance to common inorganic anions (e.g., Cl − , SO 4 2− , NO 3 − ). This work highlights the potential of Fe 3 S 4 /Ti 3 C 2 MXene composites as sustainable, multifunctional catalysts for environmental remediation, offering insights into the design of MXene-based hybrid systems for advanced oxidation processes.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2025
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IF 9.7
Chenxi Li,Mai Li,Xiang Peng,Inaam Ullah,Haotian Hu,Jiayi Shen,Ayesha Irfan,Wendong Xu,Paul K. Chu
Two-dimensional MXenes, with their accordion-like morphology and facile exfoliation into monolayers, offer an ideal platform for immobilizing electroactive materials. However, composites fabricated from MXenes through conventional methods exhibit inhomogeneous dispersion, sluggish charge redistribution, and poor interfacial coupling, limiting their potassium-ion storage performance. Herein, an interlayer-engineered CoGa-LDH/MXene heterostructure is fabricated via Peltier effect-driven rotational hydrothermal synthesis with tunable Co/Ga ratios. This approach ensures atomic-level confinement of layered double hydroxide (LDH) within MXene interlayers while strengthening interfacial coupling and ion transport kinetics. The resulting heteroarchitecture synergizes the high pseudocapacitance of CoGa-LDH and the metallic conductivity of MXene, enabling ultrafast ion/electron transport and suppressing self-aggregation. Optimized Co 1 Ga 1 -LDH/MXene delivers a remarkable specific capacitance of 1345.3 F/g and exceptional cyclability (85.13 % retention after 6000 cycles), surpassing most reported LDH-based supercapacitors. Density functional theory (DFT) calculations reveal that the heterointerface enhances K + -ion adsorption energy and modulates charge distribution, accelerating redox kinetics. When the Co 1 Ga 1 -LDH/MXene composite is assembled into an asymmetric supercapacitor (ASC), the device achieves an energy density of 77.4 Wh/kg at 1125 W/kg, with sustained performance under rigorous cycling. This work elucidates the confinement engineering of MXene-based compounds and their potassium storage mechanisms, providing critical references for high-energy-density supercapacitors in alkaline systems.
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SEPARATION AND PURIFICATION TECHNOLOGY
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2025
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IF 9
Ruihua Chen,Hao Deng,Junpeng Jiang,Daoyang Han,Gang Shao,Hailong Wang,Rui Zhang,Chao Ma
To overcome the problem of insufficient molybdenum adsorption capacity of commercially utilized alumina in 99 Mo/ 99m Tc generator, UiO-66(Ce)@MXene composites as potential molybdenum adsorbents were successfully prepared via in-situ growth method in this work. The adsorption performance and adsorption mechanism were investigated. The results indicate that the UM3 possesses superlative adsorption behavior compared to the other two samples. The adsorption kinetics are well described by the quasi-second-order model and the adsorption reaches equilibrium within 30 min. The adsorption isotherm can be well fitted with the Langmuir model, displaying the maximum molybdenum adsorption capacity of 833 mg/g at pH 3, superior to other reported adsorbents. The adsorption capacity manifests that polymolybdates are captured by the hydroxyl groups on MXene through hydrogen bonds. The monomolybdates can diffuse into micropores and are adsorbed on adsorption sites, e.g. missing-linker defects and Ce-OH groups. Consequently, the constructed hierarchical frameworks promote molybdenum adsorption and increase adsorption capacity significantly. The unrivalled adsorption performance of UiO-66(Ce)@MXene composites as molybdenum adsorbents have promising potential for the application in 99 Mo/ 99m Tc generator.
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Materials Today Chemistry
·
2025
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IF 6.7
Wenjie Wang,Shiyi Xing,Ping Lin,Lin Du,Qi Chen,Wei Sun
Ultrathin and lightweight electromagnetic interference (EMI) shielding materials tailored for microminiaturized electronic devices have become an urgent necessity. Porous polymeric composites incorporated with conductive fillers could be a promising candidate to meet such challenge. In the current study, pore-formation technique based on the inverse emulsion - breath figure process was utilized to shape highly porous polymeric coating with multi-layered arrays of micro-pores, uniformly embedded with Ti 3 C 2 T x MXene. By tuning the influential parameters, including MXene content, coating thickness, and pore sizes, an EMI shielding effectiveness value of 38 dB could be obtained from the composite coating. The 3D conductive pathways shaped by the Ti 3 C 2 T x flakes and the existence of the multiple interfaces within the multi-layered porous matrix of the polymer-MXene coatings (PMCs) were assumed to establish the fine EMI shielding performance. The PMC was further coated onto the circuit board and proven to function well as an ultra-thin EMI shielding layer attached to the microminiaturized electronic devices. In-situ metallic reduction induced by the MXene with inherent reducibility was utilized to further enrich the porous matrix of PMCs with Ag nanoparticles, generating Ag-decorated PMCs (Ag-PMCs). The fabricated Ag-PMC with thickness of only 240 μm demonstrated superior EMI shielding performance of an EMI SE value of 70.32 dB and a SSE/t value of 8775 dB cm 2 g −1 . This work sheds light on designing the ultrathin porous coating as EMI shielding materials for cutting-edge electronic devices.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2026
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IF 8.7
Xinhui Wang,Jing Cheng,Zhangxue Han,Wanli Cheng,Guangping Han,Yonggui Wang,Dong Wang
Conductive hydrogels have garnered significant attention in the field of flexible wearable sensors due to their intrinsic conductivity and tunable mechanical properties. However, simultaneously achieving both high mechanical stability and high sensing sensitivity remains a significant challenge. In this study, a conductive hydrogel with a low-hysteresis interpenetrating polymer network structure was fabricated via one-pot free-radical polymerization. The three-dimensional network of bacterial cellulose (BC) provides mechanical support for MXene, forming the first network layer of the hydrogel via hydrogen bonding. The second network is constructed by in situ polymerization of acrylamide (AM) within the BC framework. The incorporation of BC significantly improves both mechanical strength and electrical conductivity, effectively overcoming the typical trade-off among strength, toughness, and conductivity observed in conventional conductive hydrogels. As a result, the optimized hydrogel exhibits exceptional stretchability (elongation at break ~1800%), high toughness, excellent resilience, and high conductivity (435.6 mS m −1 ), along with a rapid response time of 400 ms. Moreover, the hydrogel demonstrates high sensing sensitivity (GF = 11.48 at 600–800% strain) and long-term signal stability, enabling its application in flexible wearable sensors for accurate detection of human motion and voice signals. These properties highlight the hydrogel's broad potential for use in human-machine interface technologies.
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CHEMICAL ENGINEERING JOURNAL
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2026
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IF 13.2
Rong Ma,Xiaochun Tao,Shuo Li,Chenglong Chen,Qinqin Liu,Shaosheng Rao,Juan Yang
Two-dimensional (2D/2D) heterojunction photocatalysts hold great promise for solar-driven antibacterial disinfection owing to their unique interfacial architectures and tunable electronic properties. However, insufficient interfacial electronic coupling and ineffective charge separation still hinder their practical performance. Here, a sulfur-doped g-C 3 N 4 /Ti 3 C 2 Tx-MXene (SCN/MXene) 2D/2D heterojunction is rationally designed to enable efficient charge separation and transfer, delivering superior solar-driven antibacterial activity with remarkable stability. Combined experimental and theoretical analyses reveal that sulfur doping modulates the electronic structure of g-C 3 N 4 , elevates its Fermi level, and strengthens interfacial electronic coupling with Ti 3 C 2 Tx-MXene, thereby enhancing the built-in electric field and facilitating charge transfer across the interface. Moreover, S-doping induces interfacial charge redistribution, enhancing O 2 adsorption and activation at Ti sites and thereby accelerating the generation of reactive oxygen species (ROS). Consequently, SCN/MXene achieves nearly complete inactivation of Escherichia coli , Staphylococcus aureus , and methicillin-resistant Staphylococcus aureus within 60 min under solar irradiation, outperforming most of the state-of-the-art photocatalysts.
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BIOMASS & BIOENERGY
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2026
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IF 5.8
Ge Zhu,Qianqian Yin,Zeren Rao,Ruikun Wang,Zhenghui Zhao,Jianqiang Li
Phase change energy storage technology is an important means of efficient energy utilization. To enhance the competitiveness of biochar-based composite phase change materials (PCMs), this study improves the encapsulation capability of white pine biochar through oleophobic modification while incorporating MXene and multi-walled carbon nanotubes (MWCNT) to enhance the photothermal conversion capability and thermal conductivity of the carbon materials. The resultant supporting material, BC-MM, was successfully combined with paraffin wax (PW) to create an enhanced composite PCM (PW/BC-MM), exhibiting a melting enthalpy of 117.0 J/g. Furthermore, the composite exhibits a degree of supercooling that is higher than that of pure PW. This phenomenon is attributed to the nanoconfinement effect of the biochar mesopores, confirming effective physical encapsulation. Results indicate that the PW/BC-MM composite achieved a high PW loading of 88.16 % with an encapsulation efficiency of 85.18 %. Moreover, the thermal conductivity of PW/BC-MM reached 0.571 W/(m·K), representing a 313.77 % enhancement over pure PW. In the photothermal conversion capability test, the temperature change of PW/BC-MM is 22.1 °C higher than that of the unenhanced composite PCM (PW/BC). Additionally, tests on UV–visible light absorption indicate that the incorporation of the enhanced materials significantly improves the radiation absorption capability of biochar. BC-MM exhibits absorption increases of 21.16 % and 30.67 % in the visible and NIR regions, respectively, compared to oleophobic biochar (BC). Therefore, the biochar-based composite PCM prepared in this study possesses good photothermal conversion capability and thermal conductivity, resulting in a broader application scope.
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SENSORS AND ACTUATORS A-PHYSICAL
·
2023
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IF 4.6
Xinhua Liu,Chengkun Ma,Shaowei Lu,Rongzheng Xu,Keming Ma,Xingmin Liu,Lu Zhang
In this paper, the health monitoring of Al 7075 friction stir welded structure was carried out, including elastic and plastic deformation during stretching and bending. A thin film sensor composed of MXene and single-walled carbon nanotubes was developed by simple mixing and vacuum filtration. This flexible MXene/SWCNT thin film sensor combining the sensitivity of MXene with the stability of carbon nanotubes and can be pasted on the surface of Al 7075 FSW joints through polyimide encapsulation to achieve structural health monitoring . The experimental results show that the MXene/SWCNT sensors encapsulated in polyimide can effectively capture the micro strain of different areas during stretching and bending. When the strain of the welded structure is less than 3000, only elastic deformation occurs in different regions of the welded structure, and the sensors located in different regions show the same resistance change rate. When the strain is greater than 3000, the resistance change rate of the sensors in the thermal-mechanical affected zone and heat affected zone obviously, and when the external force is released, there is residual resistance , which proves that the plastic deformation occurs in the welded structure at this time. By comparing the resistance change rate of the sensors in different regions, it can be inferred whether plastic deformation occurs. As the strain further increases, the resistance change rate of the sensor further increases and make a stable response until the structure breaks. This sensor can be used to track the whole process monitoring of welded structure before fracture.
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CARBON
·
2026
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IF 11.6
Lijuan Cai,Shengxiang Xiong,Jun Chen,Yu Su,Jiyuan Cong,Gang Chen,Chengjun Dong,Hongtao Guan
In response to the burgeoning challenge of electromagnetic wave pollution, the development of high-performance electromagnetic wave absorbing materials with strong attenuation capability is urgently needed. In this study, a MXene/NiO nanowire hybrid aerogel was constructed via electrostatic self-assembly, leveraging a multi-mechanism synergistic loss strategy to significantly enhance the electromagnetic absorbing performance. The three-dimensional conductive network of the material optimizes impedance matching, facilitating electromagnetic wave penetration into the interior for multiple reflections and scattering, thereby reducing surface reflection. Simultaneously, the highly conductive MXene contributes to substantial conduction loss, while abundant defects (graphitic defects, oxygen-containing groups) and heterogeneous interfaces (MXene-NiO) induce notable dipole and interfacial polarization losses. Furthermore, the nano-heterostructure formed between NiO nanowires and MXene enhances interfacial polarization through charge accumulation at the interfaces. Benefiting from these synergistic loss mechanisms, the optimized aerogel exhibits exceptional electromagnetic wave absorption performance, achieving a minimum reflection loss ( RL min ) of −53 dB at a thickness of 1.6 mm and an effective absorption bandwidth (EAB) of 4 GHz. Our findings propose an innovative materials design doctrine enabling precise multi-scale regulation of electromagnetic wave absorption in aerogels.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2026
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IF 8.5
Zhen-wei Guo,Yan-fen Mo,Zhao-yu Li,Yang Meng,Yi Mei,Delong Xie,Feng Wu
High-performance photothermal conversion composites with excellent mechanical properties hold great potential for applications in energy harvesting, thermal management, and sensing. In this work, vulcanization-free natural rubber (NR) composites with outstanding mechanical strength and photothermal conversion efficiency were fabricated by incorporating Ti 3 C 2 T x MXene nanosheets as photothermal agents and sodium alginate (SA) as a dispersion aid. SA effectively prevented MXene restacking in the NR matrix, ensuring uniform distribution and enhancing interfacial interactions. As a result, the NR/SA/MXene composites reached peak surface temperatures of 88 °C and a photothermal conversion efficiency of 75.89% under 300 s Xe lamp irradiation and maintained this performance over 10 heating–cooling cycles. NR/SA/MXene-8 further achieved an EMI shielding effectiveness of 50.07 dB, while maintaining a tensile strength of 3.68 MPa, elongation at break above 400%, and stable structural integrity. This work offers a scalable approach for designing multifunctional MXene-based elastomers with synergistic photothermal and EMI shielding capabilities, without the need for vulcanization.
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