MATERIALS AND STRUCTURES
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2026
·Vol. 59
·期 2
·120
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IF 3.9
Wang Riran,Wan Jingku,Zhou Lu,Ye Li,Wang Meng,Sun Zhuohan
The present study has attempted to develop cementitious composites with electromagnetic (EM) absorbing and shielding properties utilising a low dosage of Ti 3 C 2 T X MXene flakes. A polytetrafluoroethylene mould was employed to prepare MXene/cement paste and cement mortar specimens. The microscopic morphology, elemental identity, crystal structure, and chemical functional groups of MXene flakes and MXene/cementitious composites were characterised by a series of microscopic tests. The response behaviour and interaction mechanism of MXene/cement composites with EM fields have been thoroughly investigated from various perspectives, including the evolution of dielectric and permeability parameters, EM wave loss characteristics, EM wave absorption characteristics, and electromagnetic interference (EMI) shielding effectiveness (SE). The findings indicated that mono-layered MXene flakes possessed the capacity to establish a potentially uninterrupted conductive network within cement composites, and to exert an influence on the crystalline phase characteristics of the cement paste during hydration. The MXene has been demonstrated to enhance the dielectric constant and the EM wave loss of cement pastes and mortars. Furthermore, the reflection loss and the impedance matching outcomes demonstrated that both 1.8 wt.% MXene/cement paste and 1.2 wt.% MXene/cement mortar possessed the optimal EM absorbing capability. The total EMI SE has been found to rise with increasing MXene mass ratio for both cement paste and mortar. Generally, MXene/cement composites exhibited EM shielding mechanisms dominated by absorption. This study may provide novel insights and industry theoretical support for the universal application of MXene materials in EM wave absorbing and shielding in the field of lightweight, and high-strength building materials.
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Surfaces and Interfaces
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2026
·
IF 6
Ke Jing,Qunyan Li,Miaomiao Wang,Liudong Yang,Qi Wei,Wenjuan Chen,Zuoren Nie
The construction of semiconductor heterojunctions offers a promising route to markedly enhanced photocatalytic performance. A template-based and electrostatic self-assembly strategy was employed to synthesize the mesoporous g-C₃N₄/MXene photocatalyst, integrating melamine-derived g-C₃N₄ with an MXene secondary phase. MXene layers were inserted between g-C₃N₄ layers to construct a special stacked sandwich structure called a 2D/2D heterostructure. The mesoporous g-C₃N₄/MXene composite delivers markedly superior photoelectrochemical performance to bare mesoporous g-C₃N₄. With 10 wt % MXene, the as-prepared g-C₃N₄/MXene attains its maximum BET surface area of 43.19 m²g⁻¹ and simultaneously delivers the highest photocatalytic activity. After 120 min of visible-light irradiation, it degrades 98.6 % of methyl orange and 97.2 % of rhodamine B, while retaining excellent cyclic stability. The construction of a heterojunction between MXene and mesoporous g-C₃N₄ can significantly reduce the band gap of g-C₃N₄, causing a redshift of the UVvis absorption edge, and effectively improve the separation efficiency of photogenerated electron-hole pairs during photoresponse. After cyclic testing, the degradation efficiency showed no significant decline, demonstrating excellent catalytic stability. These findings synthesize an economical, versatile, and efficient mesoporous g-C₃N₄/MXene photocatalyst, which can be used to eliminate pollutants in industrial wastewater streams and improve environmental sustainability.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2026
·
IF 5.4
Yun Tan,Yijun Liu,Kerui Huang,Qinglong Yu,Wanlin Han,Baoshu Chen,Longfei Yi
Fiber-assisted fabrication of Polyimide/MXene composite aerogel with lightness. • Excellent thermal insulation that enables infrared camouflage and fire protection. • Outstanding mechanical resilience and superior EMI SE (68.5 dB). • Reliable pressure sensing capability to accurately detecting human motion. Fabricating polymer aerogels that merge high electrical conductivity, mechanical elasticity, and enduring stability is a critical yet demanding objective. In this work, lightweight polyimide (PI)/MXene composite aerogels were synthesized through a straightforward, sustainable method utilizing PI fiber-assisted freeze-drying and subsequent thermal imidization. The resulting aerogels possess a unique segregated architecture, providing exceptional electrical conductivity alongside superior electromagnetic interference (EMI) shielding (reaching 68.5 dB). Owing to their mechanical resilience and high conductivity, these aerogels function as dependable piezoresistive sensors for detecting human activity and physical signals, which can accurately detect pressures as low as 0.04 kPa (at 0.5% strain). Furthermore, their porous nature and minimal thermal conductivity ensure efficient heat insulation, making them promising for thermal regulation and fire safety applications. Overall, this study presents a scalable fabrication strategy and promotes the advancement of multifunctional aerogels for next-generation flexible electronic devices. Download: Download high-res image (194KB) Download: Download full-size image Fiber-assisted fabrication of Polyimide/MXene aerogels that has integrated EMI shielding with thermal insulation for wearable piezoresistive sensing
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PROGRESS IN ORGANIC COATINGS
·
2026
·
IF 7.9
Xiaohua Chen,Hongzhi Cui,Yuhao Zhang,Cheng Man,Xiaoyu Jiang,Ruiqi Xu,Zhongyu Cui
This study develops a bilayer superhydrophobic coating pigmented with modified MXene for robust anticorrosion and efficient photothermal de-icing. The outer layer of the coating is a photothermal superhydrophobic polydimethylsiloxane coating modified with H-MXene@TiN, and the inner layer is an epoxy coating with a self-healing function provided by M-ZIF-8@PDA. The coating with a water contact angle of 154.7° exhibits a satisfactory anti−/de-icing efficiency with a stable icing-delay time (565 s at −15 °C) and fast photothermal de-icing capability (87 s under 1 sun and −15 °C). In addition, the coating maintains exceptional corrosion protection with |Z| 0.01 Hz values of 2.54 × 10 10 Ω·cm 2 after 60 days of immersion in a 3.5 wt% NaCl solution, which is several hundred times greater than that of the pure EP coating. The robust anticorrosion performance arises from the synergistic effects of controlled inhibitor release and enhanced passivation provided by M-ZIF-8@PDA.
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ADVANCED FUNCTIONAL MATERIALS
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2026
·
IF 19.9
Akbar Bashir,Ziqi Li,Ali Usman,Chak-Yin Tang,Gary Chi-Pong Tsui,Yan Chen,Chen Liu,Junpeng Qiao,Shu-Lin Bai,Cheng-Te Lin,Da-Zhu Chen
The rational design of phase-change composites that simultaneously deliver high thermal conductivity, intrinsic electrical insulation, and structural integrity is crucial for advanced thermal management and energy-regulation technologies. Herein, we report an interface-engineered anisotropic hybrid aerogel composed of amine-functionalized boron nitride ( f -BN) and Ti 3 C 2 T x MXene, fabricated via a dual-polymer-assisted gelation strategy combined with directional freeze-casting. By engineering chemically bonded yet electrically insulating interfaces through B-N-NH 2 bridges, Ti-O-C/N linkages, and π – π interactions, the system establishes a phonon-dominated transport network that overcomes the intrinsic trade-off between thermal conduction and electrical insulation. The aligned lamellar architecture further promotes efficient through-plane heat transport. Upon incorporation into a polyurethane-based solid-solid phase-change matrix, the composite achieves a high thermal conductivity of 3.376 W m −1 K −1 at a low filler loading of 14 wt.%, while retaining a substantial latent heat of 108 J g −1 and high electrical resistivity (1.68 × 10 12 Ω·cm). The composite exhibits excellent cycling stability (>96% retention after 100 thermal cycles) and delivers significant temperature reductions in CPUs (10.0°C) and Li-ion battery modules (≈7.6°C). This work establishes a design paradigm for electrically insulating, high-performance phase-change composites with synergistic heat transport and energy buffering.
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Batteries & Supercaps
·
2026
·Vol. 9
·期 5
·e202600002
·
IF 4.5
P. Sivaharini,C. Gopinathan,J. Vigneshwaran,R. L. Narayan,Dickson D. Babu,N. Krishnakumar
Tailoring the innovative hybrid composite electrode with outstanding physical and chemical properties is essential for energy storage applications. Significantly, highly conductive thin layers combined with the active sites of metal selenide in the hybrid structure, increase the active area and porosity to increases the surface area and porosity to increase the insertion/extraction of electrolyte ions. Here, a V 2 C MXene-MoSe 2 hybrid electrode is engineered by integrating V 2 CT x MXene nanosheets into a 3D MoSe 2 nanosphere framework, developing a highly interconnected 2D/3D heterostructure with unique charge–transfer routes, redox-active site density, and ion-accessible surface area. This rational structural-engineering approach creates efficient interfacial interactions, which promote effective charge storage capabilities. The V 2 C MXene-MoSe 2 electrode exhibits a high specific capacitance of 792 F g −1 at 1 A g −1 , which outperforms significantly better than the pristine V 2 CT x MXene and MoSe 2 electrodes. The V 2 C MXene-MoSe 2 hybrid electrode when employed as the positive electrode in an asymmetric supercapacitor (SC), it achieves an energy density of 33.6 Wh kg −1 at a power density of 706 W kg −1 . It also preserves 94.1% capacitance retention after 10,000 cycles at 3 A g −1 . These findings show that rational interfacial coupling of MXenes with transition-metal dichalcogenides offers a diverse platform for next-generation SCs able to efficiently bridge the performance gap between batteries and electrochemical capacitors. Graphical Efficient asymmetric supercapacitor employing a (V 2 C-MoSe 2 composite)-based positive electrode paired with an activated carbon negative electrode. The rational design enables remarkable specific capacitance of 792 F g −1 at 1 A g −1 , significantly possessing an energy density of 33.6 Wh kg −1 and a power density of 706 W kg −1 . Furthermore, the device demonstrates extended GCD cycles, indicating superior stability and reversibility.
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Journal of Bioresources and Bioproducts
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2026
·
IF 19.9
Jiasheng Wei,Di Li,Ping He,Yudong Wang,Zhu Long,Hao Jia,Guiqiang Fei,Lei Dai
Ambient pressure-dried aerogels show great potential in the field of spectra compatible defense, such as integrating electromagnetic interference shielding and infrared stealth, due to their porous structure. However, they face the critical challenge of structural collapse caused by the strong capillary forces generated during solvent evaporation. Herein, MXene sediment (MS) and 2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO)-oxidized cellulose nanofiber (TOCNF) were employed to fabricate TOCNF/MS (TMS) aerogels through an ambient pressure drying process assisted by a dual crosslinking strategy of hydrogen bonds and Zr 4+ ionic cross-linking. Notably, Zr 4+ formed a robust cross‑linking network due to its high charge density and multidentate coordination capability, which could effectively resist capillary forces during ambient pressure drying. Moreover, ethanol was introduced to reduce the surface tension of the solvent, thereby further mitigating these capillary forces. The resultant TMS aerogels maintained an intact porous structure after ambient pressure drying, which facilitated multiple reflections and absorptions of electromagnetic waves while suppressing heat transfer. As a result, the TMS aerogel achieved an electromagnetic interference (EMI) shielding effectiveness (SE) of 73.2 dB in the X band, along with efficient shielding performance (> 60 dB) in the C and Ku bands. It also exhibited exceptional infrared stealth capability, attributed to the synergy of low infrared emissivity and low thermal conductivity. Furthermore, the TMS aerogel exhibited outstanding Joule heating performance, reaching a response temperature of 106.8 °C under an applied voltage of 2.5 V. This ambient pressure-dried TMS aerogel provides a new way for efficiently utilizing MXene sediment to construct advanced spectra compatible defense materials.
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JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
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2026
·Vol. 37
·期 14
·1048
·
IF 3.2
Zhang Rui,Xu Yanpei,Li Sun,Wang Jiyun,Wang Xiaohan,Zou Yulu,Wang Qi
This study developed a surface plasmon resonance (SPR) ethanol sensor enhanced by a Co 3 O 4 /NiO/MXene nanocomposite. The Co 3 O 4 /NiO/MXene heterostructure was first synthesized via electrostatic self-assembly, and then immobilized onto the gold surface at varying concentrations through covalent bonding. The material’s high specific surface area and abundant active sites significantly enhanced ethanol adsorption, leading to a substantial amplification of the SPR response. Experimental results demonstrated optimal performance at a coating concentration of 1.5 mg/mL, achieving a sensitivity of 3216.20 nm/RIU. This represents a 36% enhancement compared to a conventional pure gold film sensor (2364.85 nm/RIU). Material characterization (SEM, XPS, XRD, BET) confirmed the successful synthesis of the composite and its porous structural properties. The sensor exhibits excellent linear response and high sensitivity, showing significant potential for application in ethanol detection.
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MICROCHEMICAL JOURNAL
·
2025
·
IF 5.1
Jihua Wei,Pengyuan He,Xudong Xin,Yuanxun Gong,Jiayi Zhang,Longjian Huang,Kai Zhang,Xianjiu Liao
A label-free, isothermal, surface-confined electrochemiluminescence assay for apurinic/apyrimidinic endonuclease-1 (APE1) is presented, in which target-triggered isothermal amplification is coupled to a bipedal DNA walker on a PEI-Ru(dcbpy)₃ 2+ /AuNPs@Ti₃C₂ (MXene) transducer to provide high signal with low background. Under optimized conditions, a log-linear range of 1.0 × 10 −3 –1.0 × 10 5 U·L −1 and a limit of detection of 5.62 × 10 −3 U·L −1 were obtained. Applicability in complex media was demonstrated in diluted human serum, yielding recoveries of 96.56–104.51 % with RSD <5 %. Selectivity controls against common nucleases and proteins showed minimal interference, and stepwise electrochemical characterization supported successful interface construction. Feasibility of the nucleic-acid modules and pathway was verified by native and denaturing PAGE, and material identity/localization was corroborated by updated EDS mapping with enhanced Ru/C clarity. By integrating dual amplification on a conductive MXene/Ru interface in a compact, label-free format, this platform enables activity-unit quantitation of APE1 in biologically relevant samples and can be adapted to other DNA-repair enzymes by reprogramming recognition sequences.
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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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Journal of Materials Chemistry A
·
2026
·
IF 9.2
Haixiang Shi,Jianming Xu,Liuyun Chen,Tongming Su,Xinling Xie,Xuan Luo,Zu-Zeng Qin,Hongbing Ji
The efficiently selective hydrogenation of carbonyls in unsaturated aldehydes by nonnoble metal catalysts is still a severe challenge. Herein, an Co nanocluster catalyst anchored on vacancy-rich Ti3C2Ox (TCOs) was designed and prepared by a simple chemical reduction method for selective hydrogenation of cinnamaldehyde to cinnamyl alcohol. The Co/TCOs-H2 catalyst showed a superior catalytic activity with a TOF of 23.6 h-1, and reached a cinnamaldehyde conversion of 96.7% and a cinnamyl alcohol selectivity of 65.5% at low cobalt loading. Further, the characterizations demonstrated that Co nanoclusters were successfully anchored on TCOs, where the exist of surface oxygen vacancies (VOs) promote their vertical adsorption properties for cinnamaldehyde. Importantly, density functional theory calculation revealed that VOs enhanced selective adsorption of C=O on Co nanocluster by modifying the outside charge density of Co atoms, resulting an increase of the adsorption energy difference for conjugated double bonds and a lower energy barrier for H2 dissociation on Co nanocluster sites. This work develops a feasible strategy for constructing highly active metal nanocluster sites on two-dimensional MXenes and provides insight into the role of VOs on MXene in metal nanocluster during hydrogenation reactions.
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Nano Materials Science
·
2026
·
IF 20.5
Tian Li,Li Ma,Tanlin Chen,Tian Yang,Renchi Qin,Yao Zou,Aming Xie,Fanbin Meng
Achieving simultaneous electromagnetic wave attenuation and long-term corrosion resistance remains a major challenge for MXene-based absorbers, owing to their intrinsic susceptibility to harsh environments and impedance mismatch. In this work, we demonstrate a 2D/2D stacked Ti 3 C 2 T x MXene/ZnCo–MoO 4 layered double hydroxide (LDH) heterostructure, prepared through electrostatic self-assembly followed by ion-exchange modification. The interlocked nanosheet architecture promotes enhanced interfacial polarization and optimized impedance matching, leading to a strong reflection loss of −46.9 dB and a broad effective absorption bandwidth of 5.7 GHz at a thickness of only 2.1 mm. Meanwhile, the LDH component provides dual functionality as a physical barrier and an ion reservoir, enabling sustained release of Zn 2+ and MoO 4 2− species to suppress corrosion processes. The optimized coating exhibits an impedance modulus up to 9.31 × 10 8 Ω cm 2 and a protection efficiency of 99.97% after 21 days of salt-spray exposure. Electromagnetic simulations and arched-frame experiments further validate the stability of the composite under operational conditions. This multifunctional strategy bridges the gap between high-efficiency microwave absorption and environmental durability, offering practical prospects for aerospace, marine, and defense applications.
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