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Evaluating the delamination process in the synthesis of MXenes (2D transition metal carbides and nitrides) is critical for their development and applications. However, the preparation of large defect‐free MXene flakes with high yields is challenging. Here, a power‐focused delamination (PFD) strategy is demonstrated that can enhance both the delamination efficiency and yield of large Ti3C2Tx MXene nanosheets through repetitive precipitation and vortex shaking processes. Following this protocol, a colloidal concentration of 20.4 mg mL–1 of the Ti3C2Tx MXene can be achieved after five PFD cycles, and the yield of the basal‐plane‐defect‐free Ti3C2Tx nanosheets reaches 61.2%, which is 6.4‐fold higher than that obtained using the sonication–exfoliation method. Both nanometer‐thin devices and self‐supporting films exhibit excellent electrical conductivities (≈25 000 and 8260 S cm‐1 for a 1.8 nm thick monolayer and 11 µm thick film, respectively). Hydrodynamic simulations reveal that the PFD method can efficiently concentrate the shear stress on the surface of the unexfoliated material, leading to the exfoliation of the nanosheets. The PFD‐synthesized large MXene nanosheets exhibit superior electrical conductivities and electromagnetic shielding (shielding effectiveness per unit volume: 35 419 dB cm2 g–1). Therefore, the PFD strategy provides an efficient route for the preparation of high‐performance single‐layer MXene nanosheets with large areas and high yields. A new method for the preparation of large 2D Ti3C2Tx MXene nanosheets is reported. The method is based on conventional etching followed by repetitive precipitation and vortex shaking process, which efficiently transfer the mechanical energy for exfoliation. Consequently, large defect‐free sheets that show an excellent electromagnetic shielding performance are produced with high yields.

HighlightsThe iontronic pressure sensor achieved an ultrahigh sensitivity (Smin > 200 kPa−1, Smax > 45,000 kPa−1).The iontronic pressure sensor exhibited a broad sensing range of over 1.4 MPa.Pseudocapacitive iontronic pressure sensor using MXene was proposed.Flexible pressure sensors are unprecedentedly studied on monitoring human physical activities and robotics. Simultaneously, improving the response sensitivity and sensing range of flexible pressure sensors is a great challenge, which hinders the devices’ practical application. Targeting this obstacle, we developed a Ti3C2Tx-derived iontronic pressure sensor (TIPS) by taking the advantages of the high intercalation pseudocapacitance under high pressure and rationally designed structural configuration. TIPS achieved an ultrahigh sensitivity (Smin > 200 kPa−1, Smax > 45,000 kPa−1) in a broad sensing range of over 1.4 MPa and low limit of detection of 20 Pa as well as stable long-term working durability for 10,000 cycles. The practical application of TIPS in physical activity monitoring and flexible robot manifested its versatile potential. This study provides a demonstration for exploring pseudocapacitive materials for building flexible iontronic sensors with ultrahigh sensitivity and sensing range to advance the development of high-performance wearable electronics.

Ti3C2Tx MXene on Astrocytes This image shows Ti3C2Tx MXene flakes on the astrocyte membrane. Ti3C2Tx MXene is a two‐dimensional nanomaterial with promising properties for application in bioelectronics. In this first systematic evaluation of astrocyte–MXene interactions, scanning electron microscopy reveals Ti3C2Tx adhering to astrocytes without causing any evident alteration of the membrane. Alongside viability, morphology, and calcium imaging assays, these findings establish for the first time the biocompatibility of Ti3C2Tx MXene with astrocytes. More details can be found in the Research Article by Flavia Vitale, D. Kacy Cullen, and co‐workers (DOI: 10.1002/admi.202500261).

Bioactive antimicrobial films play important roles in various fields, such as biodegradable interfaces, tissue regeneration, and biomedical applications where preventing infection, biocompatibility, and immune rejection are important. In the present study, bioactive POSS-doped Ti 3 C 2 T x MXene filled PLA composite film was prepared using the solution casting method for biomedical applications. The contact angle tests were investigated to reveal the usability of the thin films in biomedical applications. The angle decreased from 85.92° degrees in pure PLA thin films to 72.23° on POSS-doped Ti 3 C 2 T x MXene films. The antibacterial performance, cytotoxicity and cell viability assessments of the prepared films have also been thoroughly investigated. Antibacterial tests revealed that the POSS-doped Ti 3 C 2 T x MXene films effectively inhibited the growth of E. coli and S. aureus by 65.93% and 80.63%, respectively, within 4 h. These inhibition rates were observed as 58.32% and 54.97% for E. coli and S. aureus , respectively, after 24 h. Cytotoxicity assessments demonstrated that PMPs consistently showed higher cell viability due to the combination of POSS and Ti 3 C 2 T x MXene. The obtained results suggest that the POSS-doped Ti 3 C 2 T x MXene film is a promising candidate in cases where bacterial inhibition and high biocompatibility are of critical importance.

Ammonia (NH3) potentially harms human health, the ecosystem, industrial and agricultural production, and other fields. Therefore, the detection of NH3 has broad prospects and important significance. Ti3C2Tx is a common MXene material that is great for detecting NH3 at room temperature because it has a two-dimensional layered structure, a large specific surface area, is easy to functionalize on the surface, is sensitive to gases at room temperature, and is very selective for NH3. This review provides a detailed description of the preparation process as well as recent advances in the development of gas-sensing materials based on Ti3C2Tx MXene for room-temperature NH3 detection. It also analyzes the advantages and disadvantages of various preparation and synthesis methods for Ti3C2Tx MXene’s performance. Since the gas-sensitive performance of pure Ti3C2Tx MXene regarding NH3 can be further improved, this review discusses additional composite materials, including metal oxides, conductive polymers, and two-dimensional materials that can be used to improve the sensitivity of pure Ti3C2Tx MXene to NH3. Furthermore, the present state of research on the NH3 sensitivity mechanism of Ti3C2Tx MXene-based sensors is summarized in this study. Finally, this paper analyzes the challenges and future prospects of Ti3C2Tx MXene-based gas-sensitive materials for room-temperature NH3 detection.

Electromagnetic interference (EMI) shielding materials with excellent flexibility and mechanical properties and outstanding thermal conductivity have become a hot topic of research in functional composites. In this study, the “sol–gel‐film conversion technique” is used to assemble polyetherimide‐functionalized Ti3C2Tx nanosheets (f‐Ti3C2Tx) with poly(p‐phenylene‐2,6‐benzobisoxazole) (PBO) nanofibers (PNFs), followed by dialysis and vacuum drying to prepare f‐Ti3C2Tx/PNF films with lamellar structures. When the loading of f‐Ti3C2Tx is 70 wt%, the f‐Ti3C2Tx/PNF film presents optimal comprehensive properties, with an EMI shielding effectiveness (SE) of 35 dB and a specific SE/thickness ((SSE, SE/density)/t) of 8211 dB cm2/g, a tensile strength of 125.1 MPa, an in‐plane thermal conductivity coefficient (λ) of 5.82 W/(m K), and electrical conductivity of 1943 S/m. After repeated folding for 10,000 cycles, the EMI SE and the tensile strength of f‐Ti3C2Tx/PNFs films still remain 33.4 dB and 116.1 MPa, respectively. Additionally, the f‐Ti3C2Tx/PNF film also shows excellent thermal stability, flame retardancy, and structural stability. This would provide a novel method for the design and fabrication of multifunctional composite films and considerably expand the applications of MXene‐ and PNF‐based composites in the fields of EMI shielding and thermal management. The “sol–gel‐film conversion technique” is proposed to assemble functionalized Ti3C2Tx (f‐Ti3C2Tx) with poly(p‐phenylene‐2,6‐benzobisoxazole) nanofibers (PNFs) to fabricate f‐Ti3C2Tx/PNF films. The f‐Ti3C2Tx/PNF film with 70 wt% f‐Ti3C2Tx presents superior σ of 1943 S/m and SSE/t of 8211 dB cm2/g, excellent tensile strength of 125.1 MPa and outstanding λ//of 5.82 W/(m K), showing great potential in the fields of electromagnetic interference shielding and thermal management.

The rising population and increased energy consumption drive contemporary researchers to develop highly efficient electrode materials for high-power energy storage devices. Herein, copper-doped tungsten oxide (Cu-WO 3 ) and compositing MXene (Cu-WO 3 /MXene) in different concentrations have garnered substantial interest for their usage as an electrode material owing to their impressive energy-storing capacity, including high metallic conductivity, hydrophilic nature, and exceptional electrochemical performance due to their active surface chemistry. In the present work, we employ a facile co-precipitation technique to fabricate WO 3 and Cu-WO 3 (Cu x% = 5 at%, 10 at%, and 15 at%). Furthermore, we synthesized a synergistic 15 at% Cu-WO 3 /MXene nanocomposite by integrating Cu-WO 3 and MXene via sonication. The synthesized sample’s structure, functional, morphology, chemical composition, and electrochemical properties were examined through various techniques such as X-ray powder diffraction (XRD), Fourier transform infrared spectrum (FT-IR), X-ray photoelectron spectra (XPS), Field Emission Scanning Electron Microscopy (FESEM), and High-Resolution Transmission Electron Microscopy (HRTEM). The X-ray diffraction analyses corroborated the monoclinic state of WO 3 along with the substitutional inclusion of Cu in the WO 3 lattice integrated with MXene. Utilizing a Field Emission Scanning Electron Microscope (FESEM), the surface morphological analysis revealed the formation of Cu-WO 3 nanospheres embedded in MXene sheets. Furthermore, according to results obtained from electrochemical analysis profiles, at 1 mA, 15 at% Cu-WO 3 /MXene displayed a greater specific capacitance of 692.4 F/g in comparison to other electrode materials via a three-electrode system, which is due to the synergistic impact of the Cu-WO 3 as well as the conductive properties of MXene sheets. Also, the electrode demonstrated excellent cycling stability, retaining 89% of its initial capacitance over 5000 charge-discharge cycles. The Ragone plot revealed an energy density of 70.10 Wh/kg at a power density of 809.8 W/kg. B-value analysis and scan rate-dependent CV confirmed the contribution of both surface-controlled and diffusion-controlled charge storage mechanisms. Likewise, in contrast to all other synthesized materials, 15 at% Cu-WO 3 /MXene revealed a lesser solution resistance and charge transfer resistance. In accordance with the results, the 15 at% Cu-WO 3 /MXene nanocomposite is an extremely efficient capacitive material that can enhance electrochemical performance in energy storage applications.

This review provides an overview of the fabrication methods for Ti3C2Tx MXene-based hybrid photocatalysts and evaluates their role in degrading organic dye pollutants. Ti3C2Tx MXene has emerged as a promising material for hybrid photocatalysts due to its high metallic conductivity, excellent hydrophilicity, strong molecular adsorption, and efficient charge transfer. These properties facilitate faster charge separation and minimize electron–hole recombination, leading to exceptional photodegradation performance, long-term stability, and significant attention in dye degradation applications. Ti3C2Tx MXene-based hybrid photocatalysts significantly improve dye degradation efficiency, as evidenced by higher percentage degradation and reduced degradation time compared to conventional semiconducting materials. This review also highlights computational techniques employed to assess and enhance the performance of Ti3C2Tx MXene-based hybrid photocatalysts for dye degradation. It identifies the challenges associated with Ti3C2Tx MXene-based hybrid photocatalyst research and proposes potential solutions, outlining future research directions to address these obstacles effectively.

Carcinoembryonic antigen (CEA) is a critical biomarker for diagnosing and monitoring cancers such as liver, colon, and breast cancer. This study presents a highly sensitive surface plasmon resonance (SPR) sensor incorporating 2D materials—graphene and MXene (Ti 3 C 2 T X )— in a Kretschmann configuration. The sensor, comprising a BK7 prism, gold (Au), graphene, aluminum oxide (Al₂O₃), and MXene, is optimized for detecting CEA in aqueous solutions with high precision. The performance of the proposed sensor was evaluated using the finite difference time domain (FDTD) numerical method, focusing on key parameters such as sensitivity and figure of merit (FOM). Operating at a wavelength of 633 nm, the sensor achieved an exceptional sensitivity of 163.63 deg/RIU and an FOM of 17.52 RIU⁻¹, marking a significant improvement over previously reported SPR biosensors. Comparative analysis further underscores the superior performance of this design, establishing it as a cutting-edge tool for applications in biosensing, medical diagnostics, food safety, and environmental monitoring. The proposed sensor offers significant potential for real-world applications, including clinical diagnostics for early cancer detection, food safety monitoring, and environmental sensing.

Hybrid systems have attracted significant attention within the scientific community due to their multifunctionality, which has resulted in increasing demands for wearable electronics, green energy, and miniaturization. Furthermore, MXenes are promising two‐dimensional materials that have been applied in various areas due to their unique properties. Herein, a flexible, transparent, and conductive electrode (FTCE) based on a multilayer hybrid MXene/Ag/MXene structure that can be applied to realize an inverted organic solar cell (OSC) with memory and learning functionalities is reported. This optimized FTCE exhibits high transmittance (84%), low sheet resistance (9.7 Ω sq−1), and reliable operation (even after 2000 bending cycles). Moreover, the OSC using this FTCE achieves a power conversion efficiency of 13.86% and sustained photovoltaic performance, even after hundreds of switching cycles. The fabricated memristive OSC (MemOSC) device also exhibits reliable resistive switching behavior at low operating voltages of 0.60 and −0.33 V (similar to biological synapses), an excellent ON/OFF ratio (103), stable endurance performance (4 × 103), and memory retention properties (104 s). Moreover, the MemOSC device can mimic synaptic functionalities on a biological time scale. Thus, MXene can potentially be used as an electrode for highly efficient OSCs with memristive functions for future intelligent solar cell modules. A highly flexible, transparent, and conductive electrode is fabricated based on a multilayer hybrid MXene/Ag/MXene structure, which is then utilized for realizing an organic solar cell (OSC) with memory and learning functionalities. The fabricated device (memristive OSC) exhibits a power conversion efficiency of 13.86%, along with excellent nonvolatile resistive switching properties and synaptic learning functionalities at biological voltages and time scales.