Advanced Science
·
2025
·Vol. 12
·期 36
·e16805
·
IF 14.1
Xiaoqing Sui,Weijing Yao,Jingyi Chen,Shilong Han,Dai Yang,Jingyang Li,Kaixi Wang,Wenzhuo Wu,Hongxing Pei,Qingyong Tian,Qun Xu
Light-driven materials have attracted great interest for their promising applications in next-generation smart devices. The incorporation of various photothermal materials into polymers has been developed for endowing composites with the capability of light harvesting and photothermal conversion, and management. However, their opaque appearance, vulnerability, and challenging processability limit their practical applications. Herein, it is successfully synthesized a series of versatile transparent films (PUMW) that combine photothermal self-healing function and mechanical strength through integrating polyurethane (PU) self-healing polymers with plasmonic enhanced MXene and W 18 O 49 hybrids (MXene@W 18 O 49 ). The resulting comprehensive film (PUMW4) maintained a visible-light transmittance of over 79% in 0.2 mm thickness, and could rapidly reach 102 °C within 5 min under light irradiation of 0.45 W cm −2 . Furthermore, it demonstrated a favorable ability for photothermal self-healing, with surface scratches disappearing in 2 min. Besides, the tensile strength of PUMW4 significantly increased from 22.7 to 30.7 MPa, in comparison with PUMW0 (pure PU). The proof of concept for an indoor thermal insulation test demonstrates that the organic glass house model covered with the film exhibited a temperature reduction of 10 °C compared to the naked model, highlighting the potential of as-prepared PUMW films in energy-saving applications for large-scale out-door buildings.
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RSC Advances
·
2025
·Vol. 15
·期 21
·16597-16606
·
IF 4.6
Xiaojing Chen,Jia Li,Caojie Zhao,Wen Zhou,Jin Yang,Qingjun Liu,Wenshuai Jiang
Ion cross-linking is often used to prepare graphene hydrogels, but the effects of different ion introductions on the properties of graphene hydrogels need to be further explored. In this study, graphene oxide (GO) and GO@MXene non-spherical hydrogels were prepared by introducing different ions, and their adsorption effects on methylene blue (MB) were discussed to determine their feasibility in water treatment. The adsorption efficiencies were significantly variable because the introduction of different ions had different effects on the internal structure and molding process of the hydrogels. The GO and GO@MXene hydrogels crosslinked with Ca2+ demonstrated superior MB adsorption performance compared to those prepared with K+ and Al3+, achieving 85.2% and 85.8% MB removal efficiencies within 9 hours, respectively. Interestingly, the morphology of the hydrogel can be changed by adjusting the drop height, which in turn affects the MB adsorption. The results showed that hydrogels had faster MB removal by preparing them from a higher height (3.5 cm). The results demonstrated that hydrogels prepared from a higher droplet fall height (3.5 cm) exhibited accelerated MB removal, with a 10–20% enhancement in removal efficiency. In addition, the effects of pH and contact time on the adsorption performance of the hydrogels were investigated. The results showed that the best removal effect was achieved under neutral conditions, and the adsorption process was consistent with the pseudo-quadratic kinetic model (R2 > 0.97). In addition, we found that the introduction of MXene enhanced the water stability of the hydrogels, which increased with the metal ion valence number. Furthermore, our study demonstrated that Ca2+-crosslinked GO and GO@MXene hydrogels exhibit excellent selective adsorption of cationic dyes, achieving MB removal efficiencies of 96.6% and 98.3% in mixed dye systems, respectively. This study not only confirms that the introduction of ions can affect the properties of hydrogels by modulating their morphology, but also provides potential candidates for MB adsorption.
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ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Li Xu,Sai Zhao,Peizhu Jiang,Zhiming Deng,Zijie Gao,Peng Min,Fuxin Liang,Zhong-Zhen Yu,Hao-Bin Zhang
Two-dimensional transition metal carbide/nitride (MXene)-based conductive inks are promising in the scalable production of printed electronics and wearable devices. Nevertheless, to realize desirable rheological properties of MXene-based inks and the multifunction of the resulting printed devices is still challenging. Herein, MXene inks with tunable rheological properties were developed by inducing carboxylated cellulose nanofibers (C–CNFs) modifier. The versatile rheological properties of MXene inks facilitate the preparation of MXene gratings by direct ink writing (DIW) and multifunctional devices integrated with electromagnetic interference (EMI) shielding, Joule heaters, and humidity sensors. The highest average EMI shielding effectiveness (SE) is 33.0 dB, with specific EMI SE up to 137481.5 dB cm2 g–1. Meanwhile, when functioning as a Joule heater, a low-voltage drive and excellent cyclic and long-term stability can be observed. In addition, the humidity-sensing function integrated with wireless transmission shows a maximum response value of 2768%. The MXene gratings fabricated by DIW are multifunctional and can be applied to the next generation of wearable devices.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2025
·
IF 5.4
Miao Yuan,Saidan Wang,Hongxia Du,Yating Sui,Xiangjing Zhang,Song Zhao,Qiushi Li,Shaojie Liu,Xuteng Xing,Erjun Tang
Two-dimensional Ti 3 C 2 T x MXene, with a large specific surface area, high chemical stability and excellent barrier properties, has become a promising of anti-corrosion filler in organic coatings. However, the poor dispersion and compatibility in organic coatings restrict its efficient application. To this end, L-histidine (L-His) corrosion inhibitor was grafted on the 3-aminopropyl triethoxysilane (APTES) functionalized Ti 3 C 2 T x MXene surface, under the electrostatic attraction between the carboxylate and protonated aminopropyl groups. The obtained APTES-Ti 3 C 2 T x MXene@L-His cannot only accelerate the dispersion of Ti 3 C 2 T x MXene filler, but also greatly promote the anti-corrosion property and service lifetime of coatings through combining the physical shielding effect of MXene laminate structure with active anti-corrosion function of L-His corrosion inhibitor. Results show that amino-functionalized Ti 3 C 2 T x MXene can maintain homogeneous in epoxy resin for 300 h, enhancing its dispersion in epoxy coating. Moreover, APTES-Ti 3 C 2 T x MXene@L-His composite can achieve the continuous release of L-His for 3000 min, and additional acid-base dual response property, the releasing rate of L-His is significantly accelerated in acidic or alkaline solutions. The total loading amount of L-His in APTES-Ti 3 C 2 T x MXene@L-His composite is about 3 %. Furthermore, the practical composite coating containing APTES-Ti 3 C 2 T x MXene@L-His also exhibits the excellent anti-corrosion and certain self-healing properties, such as its |Z 0.01 Hz| value remains above 10 10 Ω·cm 2 during the 40 d immersing in 3.5 NaCl solution, which is 3 orders of magnitude higher than that of pure epoxy coating. This work extends the great significance for Ti 3 C 2 T x MXene based composite coatings application of in the field of anti-corrosion.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Jie Lou,Jian Zheng,Zhijia Zhu,Chunyan Hu,Baojiang Liu
Owing to low biotoxicity, excellent stretchability, and good adhesion properties, hydrogel sensors have received extensive attention from the academic community and developed rapidly. Many scholars have made a series of efforts to explore suitable rapid gelation schemes, which have greatly expanded the development space of hydrogel sensors, but the existing rapid gelation schemes are inevitably cumbersome or costly while achieving rapid gelation. In this work, a simple and inexpensive controlled rapid gelation scheme was found, which only requires the addition of a thermal initiator and ammonium ferrous sulphate into the gel system to enable the controlled rapid formation of chitosan/acrylamide hydrogels at room temperature. In this study, while achieving rapid gelation (within 12 s), the physical properties as well as the sensing properties of the hydrogels were improved by adding Al 3+ and MXene. The final composites obtained have good physical properties (stress 500 kPa, strain 2640 %), excellent sensitivity (GF = 4.48, deformation of 200–500 %), and adhesion properties to a wide range of materials. The chitosan/acrylamide/MXene sensors prepared by this protocol have the effect of detecting different movements of the human body, including repetitive or fine movement changes.
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CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Xiaohai Zhang,Yijie Wang,Lei Zhang,Xinru Zhang,Yajie Guo,Bao Hao,Yongqiang Qin,Qiang Li,Lei Fan,Helei Dong,Qiulin Tan
Flexible pressure sensors with porous structures have a wide range of applications in many fields, including in flexible electronic skin, medical diagnosis, and human–computer interaction. As such, the fabrication of pressure-sensitive layers with porous structures capable of superior performance has become a significant research hotspot. Herein, we report a mechanically-sensitively enhanced structure of surface patchy protrusions and porous composites which can be used to accurately monitor limb movement, pulse, and breathing. Notably, the flexible pressure sensor exhibits high sensitivity (21.457 kPa −1 ), wide detection range (0.11–11.022 kPa), rapid response/recovery time (41.84 ms/20.82 ms), and excellent stability and cycle repeatability (up to 6000 cycles). Further, the pressure sensor array can act as an electronic skin to detect the pressure distribution. We further propose a newly developed miniaturized flexible wireless feedback system equipped with five pressure sensors. Using the detected pressure as input, the accurate recognition of nine gestures (98.22 %) was achieved with the help of a convolutional neural network (CNN) model.
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APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Wenting Li,Wei Kang,Chengan Ye,Nina Wu,Feihong Wang,Huan Pang
Excessive discharge of uranyl ion (U(VI)-containing) wastewater poses significant environmental and human health risks due to radiological contamination. In this study, a metal–organic framework (MOF) exhibiting aerogel-like properties was synthesized by combining UiO-66-NH 2 with MXene through a freeze-drying process. The research focused on the removal of U(VI) from aqueous solutions with this aerogel material. The adsorption isotherm was consistent with the Langmuir model, and the maximum adsorption capacity was determined to be 229.1 mg∙g −1 . The aerogel-like MOF possesses a mesoporous structure, enhancing its U(VI) adsorption efficiency while enabling easy separation and maintaining structural integrity afterward. In cyclic adsorption–desorption experiments conducted over five cycles, the UiO-66-NH 2 /MXene adsorbent demonstrated a U(VI) removal efficiency exceeding 96 %. Overall, the aerogel-like MOF demonstrates outstanding U(VI) adsorption capacity and shows promise as an effective capacitive deionization (CDI) electrode for mitigating radiological contamination.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Hongwei Zhang,Jiazhe Cheng,Kaiyu Liu,Shou-xiang Jiang,Jichao Zhang,Qian Wang,Chuntao Lan,Hao Jia,Zhaoling Li
The challenge of achieving high-performance electromagnetic interference (EMI) shielding films, which focuses on electromagnetic waves absorption while maintaining thin thickness, is a crucial endeavor in contemporary electronic device advancement. In this study, we have successfully engineered hybrid films based on MXene nanosheets and Fe 3 O 4 nanoparticles, featuring intricate electric–magnetic dual-gradient structures. Through the collaborative influence of a unique dual-gradient structure equipped with transition and reflection layers, these hybrid films demonstrate favorable impedance matching, abundant loss mechanisms (Ohmic loss, interfacial polarization and magnetic loss), and an “absorb-reflect-reabsorb” process to achieve absorption-dominated EMI shielding capability. Compared with the single conductive gradient structure, the dual-gradient structure effectively enhances the absorption intensity per unit thickness, and thus reduces the thickness of the film. The optimized film demonstrates a remarkable EMI shielding effectiveness (SE) of 49.98 dB alongside an enhanced absorption coefficient (A) of 0.51 with a thickness of only 180 μm. The thin films with a dual-gradient structure hold promise for crafting absorption-dominated electromagnetic shielding materials, highlighting the potential for advanced electromagnetic protection solutions.
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CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Xueming Bao,Leilei Wu,Biaobiao Yan,Ying Liu,Man Zhou,Qiang Wang,Ping Wang
Transition metal oxides have shown great potential in catalytic indoor pollutant removals, but their applications are hindered by the poor aqueous dispersity, inhalable powder forms and concerning substrate adhesion. Herein, we proposed a simple technique to fabricate durable textile coatings with ‘brick-mud’ nanostructure of Ti 3 C 2 T x (MXene) and manganese dioxide (MnO 2 ). Viscosity-controllable inks were prepared by hybridizing inulin-templated MnO 2 nanoparticles with acid-etched MXene nanosheets at room temperature, establishing firm bindings through coordination bonds between transition metal cores and hydroxyls, covalent redox linkages of Mn/Ti vacancies and intermolecular hydrogen bonds. Meanwhile, the high flatness of MXene optimized the binder/catalyst-free deposition of MnO 2 onto cotton textiles, simplifying the finishing process and providing MXene@MnO 2 coatings with encouraging fastness through the aforementioned triple bridges. Consequently, the resulting textiles exhibit satisfactory photo-antibacterial activities against gram negative and positive bacteria (>99 % within 10 min), accompanying with promising formaldehyde (HCHO) removal ability (>83 % within 30 min) and encouraging ultraviolet-absorption property (<0.05 % of UVA). Summarily, the presented deposition strategy of ‘brick-mud’-like coatings of transition metal catalysts on textiles provides a reliable alternative for the fabrication of multifunctional home textiles to improve indoor living quality.
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Advanced Science
·
2025
·
IF 14.1
Ao Wang,Zhenqiu Gao,Shaokuan Wu,Yihan Wei,Bohan Lu,Jia Shi,Lanyue Shen,Yina Liu,Xuhui Sun,Zhen Wen
In the face of complex pressure stimuli, pressure sensor is required to sense the magnitude of static force and sensitive to transient mechanical stimuli. However, an individual sensing mechanism has difficulty meeting practical needs simultaneously. In this work, an MXene/cellulose nanofiber (CNF) aerogel@PDMS-based dual-modal pressure sensor is reported for complex stimuli monitoring. The aerogel-based sensing material is fabricated through MXene nanosheets and CNFs. Aerogel ice crystals sublimate and then form a 3D porous structure during vacuum freeze-drying. After attaching PDMS dilution, aerogels achieve >200 reversible compressions, and hysteresis energy is reduced by 57.8%. By utilizing both triboelectric and piezoresistive properties of MXene/CNF aerogel@PDMS, a dual-modal pressure sensor is achieved. The triboelectric effect acquires high sensitivity of 26.95 kPa −1 under low pressure (3.46 Pa–3.32 kPa) and responds to vibrations up to 1000 Hz. On the basis of variable resistances of aerogels, the piezoresistive effect can be used to identify static pressures stably (167 kPa −1 , 1.56–26.64 kPa). Combining two effects broadens the lower limit of high-sensitivity monitoring, realizing static-dynamic detection simultaneously and breaking the frequency limit of piezoresistive materials. Finally, the dual-modal pressure sensor is demonstrated to monitor complex physiological and physical signals, such as pronunciation, gestures, and tone recognition.
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Fundamental Research
·
2025
·
IF 6.3
Zhong Wang,Tuo Zang,Ye Ziyu,Siyuan Zhang,Guojian Li,Xiaoming Liu,Qiang Wang,Shuang Yuan
Precise anchoring and high-density utilization of platinum single atoms (Pt SA ) remain critical challenges in advancing efficient hydrogen production via water electrolysis. Here, we present an innovative magnetic-field-assisted electrodeposition strategy for the controllable synthesis of high-density Pt SA on two-dimensional MXene substrates. Application of a 0.6 T magnetic field significantly enhanced Pt SA deposition kinetics, yielding a 2.1-fold increase in the deposition rate. Numerical simulations confirmed that magnetohydrodynamic (MHD) effects induced by the magnetic field were the primary mechanism driving this enhanced deposition efficiency. The optimized Pt SA -0.6@MXene/NF catalyst exhibited outstanding hydrogen evolution reaction (HER) performance in 1 M KOH, achieving an ultralow overpotential of 12 mV at 10 mA cm −2 , along with a Tafel slope of 29 mV dec −1 . Notably, the catalyst demonstrated 66.1-fold higher Pt mass activity (3458.7 A g −1 ) compared to commercial Pt/C (52.3 A g −1 ) at a 50 mV overpotential. Density functional theory (DFT) calculations revealed that the high-density Pt SA configuration synergistically enhances MXene's electrical conductivity while lowering the d-band center, thereby optimizing the energy barrier for hydrogen intermediate (H*) adsorption. This work provides a novel strategy for regulating the magnetic-field-assisted deposition of Pt SA catalysts, offering a new avenue for designing high-performance water electrolysis catalysts.
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Small
·
2025
·
IF 12.1
Xiaojie Li,Mengxia Shen,Jiaojiao Sun,Chuanyin Xiong,Yujun Liu,Lin Hou,Feiguo Hua
Aerogel-based composites have demonstrated considerable potential for applications in the field of electromagnetic wave (EMW) absorption. Nevertheless, the development of such materials featuring precisely engineered microstructures, balanced magnetic/dielectric multicomponent systems, and integrated multifunctionality remains a major challenge. In this work, an MXene/lignocellulose-derived carbon framework/Fe composite carbon aerogel is successfully fabricated through a component-structure systematized strategy. By integrating ice-crystal-template-directed assembly with subsequent carbonization, a 3D porous interpenetrating network is formed by cellulose-derived carbon skeletons and MXene conductive nanosheets, which significantly enhances multiple EMW scattering and interfacial polarization. As a multifunctional molecular cross-linker, lignosulfonate (LS) not only reinforced hydrogen bonding and electrostatic interactions but also effectively anchors magnetic particles, thereby achieving a synergistic enhancement of dielectric and magnetic loss mechanisms. Following precise optimization of component ratios, the sample achieves a minimum reflection loss ( RL min ) of −51.2 dB and an effective absorption bandwidth (EAB) of 4.12 GHz at a thickness of only 1.4 mm. Moreover, the aerogel displays favorable hydrophobic-oleophilic properties and thermal insulation. This work thus provides a feasible strategy for the development of lightweight, high-performance, and multifunctional aerogel-based EMW absorbing materials.
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