CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Jiaqi Tan,Shuping Wen,Xiaoqian Lin,Liya Zheng,Zhilin Tian,Bin Li
Two-dimensional nanomaterials have garnered significant attention for electromagnetic wave absorption applications. However, developing effective microwave absorption materials suitable for complex environments remains a significant challenge. In this study, multifunctional rGO/MXene/SiC nanowires (GMS) aerogels are synthesized through a hydrothermal and electrostatic self-assembly method. The three-dimensional rGO/MXene skeleton with a hierarchical porous structure endows GMS aerogel with low density (11.4 mg cm −3 ) and thermal conductivity (30.1 mW·m −1 ·K −1 ). The incorporation of SiC nanowire enhances the mechanical properties of the aerogel, achieving a compressive strength of approximately 7.64 kPa at 30 % strain. Furthermore, SiC nanowire introduces numerous heterogeneous interfaces, which regulate electrical conductivity and improve impedance matching. The presence of abundant lattice defects and functional groups contributes to the exceptional microwave absorption performance of the aerogel, which achieves a minimum reflection loss of −81.04 dB at a thickness of 2.68 mm with a low filling ratio of 5.5 wt%. The effective absorption bandwidth covers the entire Ku band with an optimal thickness range from 2.58 to 2.81 mm. Additionally, the aerogel demonstrates excellent pressure-sensing capability, responding rapidly to various human movements. Therefore, this study provides a promising design strategy for high-performance microwave absorbers with multifunctionality.
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Biomaterials Advances
·
2025
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IF 6
Ding-Yi Zhang,Meng-Xi Wang,Chuang Cai,Wei-Wei Cheng,Yin-Jia Cheng,Wen-Long Liu,Rong Huang,Ai-Qing Zhang,Si-Yong Qin
Diabetic wound healing is extremely difficult, originating from the aspects of bacterial infection, continuous inflammation, hypoxia and excessive reactive oxygen species (ROS), etc. Consequently, multifunctional nanoplatforms capable of highly eliminating bacteria, scavenging ROS and promoting angiogenesis possess a promising prospect. This work reports our fabrication of lipopeptide/Ti 3 C 2 T x MXene nanohybrid to cure bacteria-infected diabetic wounds. Ti 3 C 2 T x nanosheet has been employed to disrupt the bacterial membrane through both the physical puncture mediated by direct contact and mild-temperature photothermal therapy (PTT) due to its excellent photothermal conversion efficiency. Moreover, it exhibits the capacities of ROS scavenging and pro-angiogenesis during the diabetic wound healing process. Positively charged lipopeptide integration on 2D Ti 3 C 2 T x MXene improves the contact of Ti 3 C 2 T x nanosheet with negative bacterial membrane for membrane-anchoring. More importantly, drug-free lipopeptide shows antibacterial capacity, which compensates the decline in therapeutic efficacy of mild-temperature PTT because of its inferior heat intensity. The cooperation between 2D Ti 3 C 2 T x MXene and therapeutic lipopeptide allows for the effective cure on bacteria-infected diabetic wound.
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CHEMICAL ENGINEERING JOURNAL
·
2025
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IF 13.2
Ao Li,Jun Xu,Dezhong Xu,Zhaohui Zhang,Ziji Deng,Daxian Cao,Jun Li,Wei Zhang,Fengshan Zhang
Real-time respiratory monitoring is pivotal for assessing sleep-related disorders, yet conventional single-modal sensors face critical limitations in reliability under complex physiological conditions. Herein, we present a biomimetic dual-modal platform synergizing a pressure-sensitive aerogel (TCMA) and humidity-responsive film (TCMF), both engineered from TEMPO-oxidized cellulose nanofibers (TOCNF) and MXene composites. The three-dimensional porous TCMA achieves graded pressure sensitivity (867.98 kPa −1 ) through dynamically tunable MXene-TOCNF contact networks, while the brick-and-mortar TCMF exhibits humidity-dependent interlayer expansion with rapid recovery (39 s). Cross-validated detection of thoracic-abdominal movements and nasal airflow patterns resolves single-sensor limitations, enabling reliable detection of simulated apnea events. Integrated with a wireless system, the ultralight platform (<0.003 g/cm 3 ) maintains 1000 cycles stability and conformal skin contact for prolonged sleep monitoring. Inspired by the hierarchical microstructure of natural softwood, this design bridges nanoscale material intelligence with clinical diagnostics, offering a sustainable, scalable solution through eco-conscious cellulose utilization, and setting new standards for multimodal wearable sensors in respiratory health management.
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TRIBOLOGY INTERNATIONAL
·
2025
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IF 6.9
Mingyuan Dou,Qing Feng,Kangchun Li,Zhenpeng Li,Fuchuan Huang,Fukang Deng
The unique physicochemical properties and 2D layered structure of MXene make it a promising lubricant additive. However, its chemical instability limits its application in environmentally friendly and sustainable lubrication systems. Although various strategies have been explored to enhance the chemical stability and tribological properties of MXene aqueous solutions, these approaches often compromise MXene's chemical compatibility and require high-viscosity petroleum-based lubricants. In this study, choline hydroxide and amino acids were added to a Ti 3 C 2 T x aqueous solution, leading to the self-assembly of choline hydroxide and amino acids into ionic liquid micelles. These micelles effectively passivated the surface of Ti 3 C 2 T x and improved its chemical stability. The experimental and simulation results showed that the ionic liquid micelles facilitated the formation of hydrogen bonds and coordination bonds between the amino acid and the Ti 3 C 2 T x surface. This interaction increased the binding energy by 2.5 times, preventing oxidation and degradation for over 90 days of storage. Moreover, during frictional processes, a TiN/TiO 2 reaction film formed between choline hydroxide, amino acids, and Ti 3 C 2 T x contributed to improved tribological properties, reducing the friction coefficient by up to 39.18 % and the wear rate by up to 69.79 %, while ensuring long-term friction stability.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2025
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IF 8.5
Yide Liu,Jiuyong Yao,Kai Li,Yueying Zhang,Shengkang Wang,Xiankai Li,Yanzhi Xia
MXene-based coating has been employed in bio-based flexible electronics, smart textile and wearable sensors due to its unique electrical and mechanical properties. Although having broader applications, producing stable and sustainable oxidation-resistant aqueous coating of MXene keeps challenging because of its high sensitivity to oxidation when exposing to oxygen and water. Herein, antioxidant aqueous coating of MXene modified by carboxymethyl cellulose (CMC) was produced by effective interaction of intercalation-covering on Mxene nanosheets surface. During sonicating MXene in aqueous CMC solution, CMC not only suppresses the oxidation of MXene, but also stabilizes the MXene coating by electrostatic repulsion effect. Furthermore, MXene coating was found to be capable of coating on cotton fabric (CF) tightly after introducing metal ion (i.e., Al 3+ ) with cross-linking effect. When being served as textiles, CF coated with antioxidant MXene not only possesses superior conductivity (0.11 S cm −1 ), photothermal effect and enhanced flame retardancy, but also enables to remain breathability, flexibility and washability, demonstrating favorable potential applications in flexible electronics, flame retardancy and wearable sensors.
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JOURNAL OF ALLOYS AND COMPOUNDS
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2025
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IF 6.3
Tian-Li Wang,Wen-Hao Geng,Peng-Fei Qian,Wen-Yi Sun,Hao-Kai Lou,Bao-Hui Shao,Qing-Xia Zhu,Hong-Zhang Geng
Conductive hydrogels are endowed with adjustable flexibility, stimulus responsiveness, and multimodal sensing, are widely applied in wearable electronics. However, their performance, particularly in terms of mechanical flexibility, electrical conductivity, and application diversity, remains constrained. Among various strategies, the incorporation of graphene (GN) into hydrogels has emerged as a potential solution due to GN’s remarkable mechanical, electrical, and functional characteristics. However, the inadequate dispersion of GN nanosheets within the hydrogel matrix can compromise the sensitivity and long-term cycling stability of flexible sensors. In this study, we found that untreated GN, after exfoliation with ionic liquids (ILs), can achieve good dispersion within hydrogel. A three-dimensional network hybrid hydrogel (A-2MX-0.2I 16 @G) was successfully prepared by using two types of one-dimensional polymer chains (N, N-methylene bisacrylamide (MBA) and polyacrylic acid (PAA)) together with two types of two-dimensional nanomaterials, Ti 3 C 2 T x (MXene) and GN nanosheets as quadruple crosslinkers. The obtained hydrogel has special properties, including high tensile strength (up to ∼955 % strain), significant toughness (tensile strength ∼200 kPa), and high sensitivity (GF=3.01). It is worth noting that sensors based on A-2MX-0.2I 16 @G hydrogels have higher sensitivity in detecting electrical signals from various human movements. These advantages enable our hydrogels to maintain stability and repeatability under strain, making it promising for multifunctional sensing applications.
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MATERIALS RESEARCH BULLETIN
·
2025
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IF 5.7
Wei Wan,Jie Zhou,Yan Li,Jiamin Xiao,Junrong Luo,Yuqian Yang,Lei Yu,Yuejun Ouyang
Flexible dielectrics with exceptional dielectric properties are highly desirable for various electronic applications. In this study, we successfully fabricated CaCu 3 Ti 4 O 12 (CCTO)/Ti 3 C 2 T x MXene/millable polyurethane (MPU) ternary composite films via a combination of mixing and hot compression techniques. The incorporation of 2D Ti 3 C 2 T x MXene nanosheets at a mass fraction of 4 % significantly enhanced the dielectric properties of the composite films. Specifically, the dielectric constant at 100 Hz increased to 41.1, representing a 14.48 % improvement over the initial CCTO/MPU composite. Meanwhile, the dielectric loss remained low at 0.050, with only a marginal increase of 2.04 %. Additionally, the breakdown strength of the composite films was notably boosted to 19.15 kV/mm, demonstrating a 15.3 % enhancement. These findings highlight the substantial improvement in the dielectric performance of the CCTO/Ti 3 C 2 T x /MPU ternary composite films, showcasing their potential for high-performance electronic applications.
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ACS Applied Materials & Interfaces
·
2025
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IF 8.2
Hengpei Su,Tianyue Xu,Tiezhu Guo,Shuhong Nie,Wenya Xu,Xinzhou Wu,Wenming Su,Chuanfang Zhang
Developing an advanced transparent conductive electrode (TCE) as a substitute for the fragile and high-cost indium tin oxide (ITO) is the top priority in the coming smart electronics era. Although two-dimensional transition metal carbides and nitrides (MXenes) have revealed great potential in the competition, the figure of merits (FoMe, defined as the ratio of direct current conductivity to optical conductivity) of reported MXenes TCEs are far below the minimum industrial requirement. Herein, we report on the breaking of FoMe limitation by a hybrid nanoimprint-blading technique to construct embedded MXene grids, where the fine slot channels are filled with MXene flakes and the space beyond is left empty, allowing more visible light to pass through, thus substantially improving the transmittance. Such a strategy decouples the correlation between transmittance and sheet resistance and achieves their individual regulation. As a result, we obtain an ultrahigh FoMe (∼84) surpassing most of other nonmetal TCEs and even being competitive to ITO. We demonstrate the application of MXene grid TCE in the electrochromic device, showing satisfactory switching time and excellent stability (>38,000 cycles). This work opens vast opportunities for MXenes to construct advanced flexible electronics for industrial applications.
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Surfaces and Interfaces
·
2025
·
IF 6.3
Lei Li,Chenyu Zhang,Zhihao Xu,Lei Gu,Rongqing Xu,Jiang Zhao
High-performance flexible humidity sensors are critical enabling components for next-generation wearable systems and electronic skin (e-skin), although achieving concomitant ultrathin geometries, mechanical flexibility, and ultrahigh sensitivity remains challenging. This study presents a significant advancement through the development of a capacitive flexible humidity sensor based on engineered Ti 3 C 2 T x (MXene)/graphene oxide (GO) heterostructures. The synergistic interactions between the polar surface terminations of MXene (rich in –OH and –F groups) and the facilitated water transport properties of GO are exploited to yield a humidity-sensing layer exhibiting a significantly enhanced dielectric response to moisture. The optimized MXene/GO device achieves a striking ultrahigh sensitivity ( S = 1.24 × 10 6 % ΔC/C₀), representing a 228-fold improvement over its pristine MXene counterpart, across a wide operational range of 11 % to 97 % relative humidity (RH). The sensor further exhibits rapid dynamic responses (adsorption/desorption times of 17 s / 7 s, respectively) and maintains excellent linearity (R 2 = 0.99). This work highlights the efficacy of MXene/GO heterostructures for developing ultra-sensitive flexible humidity sensors, paving the way for innovative applications in non-contact interfaces, skin hydration diagnostics, and physiological monitoring.
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Electronic Materials Letters
·
2024
·
IF 2.1
Yao Yubo,Dai Hongfei,Ji Mengnan,Han Ying,Jiang Bo,Cheng Chi,Song Xiaolei,Song Ying,Wu Guangfeng
Flexible strain sensors that combine high sensitivity and wide range are important for developing wearable electronics. In this paper, AgNWs/MXene/SEBS flexible strain sensor with high sensitivity and wide strain range was prepared using a thermoplastic elastomer (styrene-ethylene-butene-styrene) SEBS as the polymer matrix and AgNWs and MXene as the composite conductive fillers. The sensitivity of the AgNWs/MXene/SEBS sensor is significantly higher than that of the AgNWs/SEBS and MXene/SEBS sensors based on a single conductive filler. At 100% strain, the AgNWs/MXene/SEBS sensor has a sensitivity of 176.25. The sensor detects small strains of 0.5-5% as well as large strains of 5–50% with high linearity. The sensors remained stable after 200 cycles. The AgNWs/MXene/SEBS tensile sensors were subjected to array testing and finger bending recognition, and the sensors have promising applications in human motion monitoring. Graphical Abstract
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CHEMICAL ENGINEERING JOURNAL
·
2021
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IF 13.273
Zizhen Yu,Li Jiang,Rongyang Liu,Weidan Zhao,Ziheng Yang,Jinyao Zhang,Shangzhong Jin
The emergence of antibiotic-resistant bacterial strains has caused bacterial infections to become a more serious worldwide health problem. The development of multi-functional platform that can quickly and sensitively detect bacteria and effectively inhibit or kill bacterial is important and urgent. Herein, a novel versatile MXene-Au nanocomposite was successfully synthesized by self-assembly method for rapid detection of bacteria and photothermal sterilization. The typical gram-negative Escherichia coli (E. coli) and the gram-positive Bacillus subtilis (B. subtilis) were used as models to perform label-free, rapid and sensitive detection of bacteria based on SERS method. The antibacterial performance of the material was proved by the colony counting method, and the survival rates of E. coli and B. subtilis were as low as 8.05% and 0.06%, respectively. The Ti 3 C 2 T x -Au nanoparticles (NPs) irradiated with 808 nm light showed significant antibacterial effect within only 6 min, and the germicidal rates for E. coli and B. subtilis were 99.25% and 100%, respectively. The photothermal conversion efficiency reached as high as 43.40%. Accordingly, this multi-functional nanocomposite material can not only detect bacteria sensitively, but also has antibacterial and photothermal sterilization effects, which provides a greatly promising countermeasure for clinical treatment of diseases caused by multi-drug resistant bacteria.
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ACS Applied Nano Materials
·
2025
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IF 5.5
Wen Huang,Kaining Shen,Chang Liu,Chenxi Xu,Jigui Cheng
The depletion of fossil fuels and growing environmental concerns are accelerating the development of clean hydrogen production technologies. Anion exchange membrane water electrolysis (AEMWE) has emerged as a promising approach owing to its cost-effectiveness and improved stability of nonprecious materials. However, its efficiency is restricted by the sluggish kinetics of the oxygen evolution reaction (OER). Herein, we report a catalyst derived from a high-entropy alloy (HEA), CuFeMnCoNi-NC/MXene, which exhibits remarkable OER activity and durability. The catalyst achieves an overpotential of 267 mV at 10 mA cm–2 and a Tafel slope of 50.9 mV dec–1. It also exhibits low charge-transfer resistance (Rct = 3.4 Ω) and a large double-layer capacitance (Cdl = 27.2 mF cm–2), thereby enhancing the overall electrochemical performance. Notably, the catalyst demonstrates excellent durability, with the overpotential increasing by only 3 mV after 10,000 cyclic voltammetry (CV) cycles. An AEMWE electrolyzer assembled with this catalyst presents 1.91 A cm–2 at 2.0 V and operates at 1.0 A cm–2 for 20 h with a low degradation rate of 0.9 mV h–1.
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