COMPOSITES SCIENCE AND TECHNOLOGY
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2025
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IF 9.8
Haofei Sima,Bo Liu,Jingshi Liang,Xiaolin Shi,Chunling Zhang
Highly conductive and super-tough acrylamide hydrogels are essential for the development of flexible electronics. However, the inherent electrical and mechanical deficiencies of polyacrylamide (PAM) impede their utilization in flexible electronics. To address this challenge, a novel double-crosslinking method for rapid gelation based on an MXene-initiated poly (acrylamide/vinylimidazole) (MPAV) system is presented in this paper. MXene rapidly initiated the copolymerization of acrylamide with ionic liquids and acted as a physical cross-linking point for dynamic and reversible physical interactions with the polymer chains. The copolymerization of ionic liquids solved the problem of MXene aggregation in the medium and enabled the ionic conductivity mechanism of directional movement of free ions inside the MPAV hydrogel. MPAV hydrogels exhibited high electrical conductivity (2.28 S/m), excellent electromagnetic interference shielding efficiency (SE t > 35 dB), and sensitive strain sensing properties (maximum gauge factor: 14.69 and maximum sensitivity: 0.124 kPa -1 ). The well-designed MPAV double crosslinked hydrogel also displays remarkable mechanical properties (elongation: 457% and compressibility: 80%) and self-healing capabilities.
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高影响因子
DESALINATION
·
2025
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IF 9.8
Junzhi Li,Yanan Li,Haiyu Luo,Lili Tang,Nan Xu,Wenlan Ji,Shihao Zhang,Pei Nian,Yibin Wei
MXene-based membranes have emerged as promising candidates for seawater desalination due to their unique two-dimensional (2D) lamellar structures, excellent hydrophilicity, and tunable interlayer spacing. However, challenges such as poor salt rejection, and structural instability hinder their broader application. Herein, we present novel Ti 3 C 2 T x MXene membranes owing cyclodextrin (CD)-embedded polyester network between their interlayers through trimesoyl chloride (TMC)-induced interfacial crosslinking, which not only promotes the formation of stable cross-links between the layers of the MXene nanosheets but also enhances their desalination performance. Various characterization methods were used to demonstrate the successful preparation of the Ti 3 C 2 T x MXene-based membranes cross-linked with the specific polyester networks. Using the same dosage of CDs, the membranes modified with α-CD, β-CD and γ-CD were comparatively investigated. The membrane embedded with 5 mg of α-CD exhibited the optimal desalination performance with rejection of 93.96 %, 93.00 %, 85.88 % and 76.25 % for MgSO 4 , Na 2 SO 4 , MgCl 2 , and NaCl, respectively, and water permeabilities ranging from 93.00 to 149.06 L·m −2 ·h −1 ·bar −1 . Moreover, the Na + and Mg 2+ transport mechanisms within the prepared membrane nano-channels were further investigated by molecular dynamics (MD) simulations. This work offers an innovative approach by introducing CD/TMC interfacial crosslinking to 2D lamellar-structured membranes, providing a high-performance solution for desalination.
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高影响因子
ACS Applied Nano Materials
·
2025
·
IF 5.5
Ying Huang,Hualong Huang,Yinghao Guo,Yulin Ding,Yifan Zhou,Hang Yu,Yinghao Liu,Wenmu Li
The poor inherent water resistance and electrical performance of paper-based electrodes restrict their applications in electronic products. Organic–inorganic nanocomposites, which can integrate the merits of various materials, are the best way to compensate for these shortcomings. In this study, a facile strategy was developed to fabricate a superhydrophobic tissue/MXene/TPU/SiO2 paper-based composite for multidimensional bionic surface and wearable strain sensor applications. Inspired by taro leaves, superhydrophobic surfaces consisting of TPU/SiO2 micronanospheres were prepared by electrospinning. High strain-sensing performance is achieved by the microcrack extension mechanism of the tissue/MXene electrode. The integrity of the tissue/MXene/TPU/SiO2 paper-based composites was enhanced by systematically optimizing the multilayered assembly processes and technologies. Our composite paper demonstrated high mechanical strength and highly effective antibacterial and self-cleaning properties (water contact angle, WCA = 157°), which could not only inhibit the adhesion of Escherichia coli and Staphylococcus aureus but also repel solid contaminants upon washing with water. The paper-based wearable strain sensor displayed a very high sensitivity (gauge factor, GF = 580) over a broad strain range (bending angle from 0 to 160°) and a fast response time (53 ms). Our e-skin sensor array can effectively capture the wrist motions of table tennis players. Moreover, this sensor also showed a very high breathability (56.5 g·m–2·h–1) for comfort of wear. Notably, our paper-based sensors can be disposed of by burning, which can mitigate potential electronic waste pollution. Our strategy for fabricating paper-based sensors with superhydrophobicity, breathability, and antimicrobial properties could potentially provide promising prospects for future flexible electronics.
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高影响因子
MICROCHEMICAL JOURNAL
·
2025
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IF 5.1
Imamdin Chandio,Suet Cheung,Lei Wu,Mengyang Cui,Yongjian Ai,Qionglin Liang
Early detection of cancer is critical for reducing mortality and improving patient outcomes, yet it remains a challenge due to limitations in existing diagnostic methods. Alpha-fetoprotein (AFP), a glycoprotein predominantly produced during fetal development, has emerged as a vital biomarker for diagnosing cancers such as hepatocellular carcinoma (HCC), germ cell tumours, and yolk sac tumours. However, conventional methods for AFP detection, including immunoassays and enzyme-linked techniques, face challenges such as high costs and limited sensitivity. Here, we have developed a novel label-free electrochemical aptasensor based on a reduced graphene oxide-gold nanoparticle-MXene composite (rGO-AuNPs@MXene). This hybrid material leverages the high conductivity and catalytic activity of AuNPs, the large surface area and stability of rGO, and the exceptional electrochemical properties of MXenes. The rGO-AuNPs@MXene based composite offers high sensitivity, excellent selectivity, and favorable biocompatibility for the detection of AFP. NH 2 -aptamers were immobilized onto the rGO-AuNPs@MXene-modified electrode, enabling precise AFP recognition through specific aptamer-target interactions. The aptasensor demonstrated a broad detection range (10 fg mL −1 to 1 μg mL −1 ), with an ultra-low limit of detection of 13.91 fg mL −1 (S/N = 3). It demonstrated excellent stability, with only a 3.80 % decrease in signal after 8 days of storage, and remarkable reproducibility, showing a relative standard deviation of 1.85 % across five electrodes. These findings emphasize the remarkable efficiency of the rGO-AuNPs@MXene composite in producing highly sensitive and reliable electrochemical aptasensors. This innovation underscores its substantial potential for advancing early cancer detection and improving clinical diagnosis.
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高影响因子
Materials Today Bio
·
2025
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IF 10.2
Xipeng Chen,Yuanpei Cheng,Yongbo Li,Ze Tan,Han Wu
The clinical management of infected bone defects remains a significant challenge in orthopedic surgery. In this study, we developed a multifunctional composite scaffold by integrating MXene (Ti 3 C 2 ) nanosheets and vancomycin (Van) into a degradable poly(glycolide-co-caprolactone) (PGCL) polymer through precision 3D printing technology, with the aim of regenerating acutely infected bone defects. Systematic optimization established the optimal composition as 5 wt% Ti 3 C 2 and 5 wt% Van within the degradable PGCL polymer. Compared with PGCL scaffolds, a significantly thicker mineralized layer could be deposited on the PGCL@5 %Ti 3 C 2 /5 %Van surface in simulated body fluid (SPF). The in vitro results showed that the PGCL@5 %Ti 3 C 2 /5 %Van scaffold had antibacterial properties, cytocompatibility, osteoblast differentiation and extracellular mineralization. The in vivo results showed that the PGCL@5 %Van/5 %Ti 3 C 2 scaffold effectively inhibited infection caused by methicillin-resistant Staphylococcus aureus (MRSA) in bone defects and promoted bone repair. The potential mechanism of Ti 3 C 2 in anti-inflammatory and osteogenic induction was investigated through transcriptome analysis. These results suggest that Ti 3 C 2 is involved in the regulation of the PI3K‒Akt signalling pathway to increase osteogenic induction ability and regulate the inflammatory response by downregulating the NF-κB pathway through the deiodinase iodothyronine type II (DiO2). These findings indicate that the PGCL@5 %Ti 3 C 2 /5 %Van scaffold can enhance the regeneration of acutely infected bone defects.
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PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
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IF 13.2
Yubo Wang,Lixuan Zeng,Jian Lin,Yongqiang Qian,Zhiling Luo,Feng Huang,Luzhuo Chen
Transparent actuators have significant potential in invisible and camouflage robots. However, traditional transparent actuators are typically unprogrammable and used in a single environment (on-land or in-water), which limits their working abilities in complex environments. Herein, we propose transparent actuators and robots that integrate amphibious actuations, programmable motions, self-healing function and camouflage function together. The actuator is composed of MXene polymer composites, including bone glue, gelatin, MXene (BGGM) and polyethylene terephthalate (PET). The transmittance of BGGM/PET actuator is >80 % at 600 nm wavelength, exhibiting high transparency. On one hand, the actuator shows a light-driven bending deformation on land due to the photothermal effect. Synergistic combination of the self-healing of BGGM and the shape-fixing of PET allows the spatial-programming of actuator to demonstrate light-driven complex deformations. On the other hand, the actuator can be driven by Marangoni effect on water by using BGGM composite as fuels. Adding functional modules enables the spatial-temporal programming of the actuator, so the actuator can showcase time-varying trajectories. Finally, we demonstrate a transparent swimming robot with dual-actuation modes and a transparent actuator that conveys invisible information stealthily while moving through a complex maze on water. This research offers a promising approach to camouflage amphibious robots.
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高影响因子
ACS Applied Materials & Interfaces
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2022
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IF 10.383
Lei Liu,Cheng Wang,Ze Wu,Youqiang Xing
The main challenge in manufacturing an ionic actuator of large bending displacement and great response sensitivity is to design a flexible electrode with great electrochemical characteristics and conductivity. This research reports the MXene-PEDOT:PSS/AgNWs (MPA) electrode with a three-dimensional (3D) network structure formed by a hybrid method of the one-dimensional (1D) silver nanowires (AgNWs) and the two-dimensional (2D) Ti3C2Tx MXene. Here, a soft actuator based on the ionic cross-linked hybrid electrode was designed. The results show that the MPA electrode-based soft actuator achieves a large bending strain (0.48%, ±0.5 V sine voltage), wide frequency (0.1–10 Hz), 5 h durability (91.9% retention), fast response time (≈5 s), great power density (7.53 kW m–3), and great energy density (18.83 kJ m–3). These excellent performances contribute to the 3D structure of electrodes formed by MXene and AgNWs creating an unhindered ion channel, which facilitates short diffusion and rapid injection of ions and provides higher capacitance and mechanical integrity. This 3D network layered structure hybrid electrode provides an opportunity for the development of ultralow-voltage-drivable artificial muscles.
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PubMed
高影响因子
Applied Materials Today
·
2022
·
IF 8.663
Xuefeng Zhang,Xudong Liu,Yufang Feng,Si Qiu,Youxiang Shao,Qingyu Liao,Hao Li,Yong Liu
In this paper, a simple and scalable process combining hydrothermal and etching was designed to prepare an in situ surface-modified mesoporous MXene, Ti 3 C 2 T x , based on the synergistic effect of surface modification and mesoporous structure. It resulted that, the ion diffusion resistance was effectively reduced owing to the shortened ion diffusion pathway, and the pseudo-capacitance was significantly enhanced due to the increase of surface redox active sites by the modification of oxygen-containing groups. Meanwhile, the advantage of compact energy storage for Ti 3 C 2 T x was retained. At the current density of 2 A g − 1 , the volumetric capacitance reached 2079 F cm −3 (loading at 2.6 mg cm −2 ). As the current density increasing to 36 A g − 1 , 83% (1732 F cm −3 ) of its initial volumetric capacitance was maintained showing excellent rate performance. In addition, the replacement of the fluorine group by the oxygen-containing group during the in-situ modification reduced the reduction state of the titanium element in Ti 3 C 2 T x , achieving improved environmental stability. This work proposes a new strategy for MXenes to expand their potential application in the field of compact energy storage. At the same time, the suggested strategy based on "endogenous" modification is expected to provide new ideas to improve antioxidation ability of MXenes.
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高影响因子
Polymers
·
2020
·Vol. 12
·期 10
·2192
·
IF 3.426
Qiu-Shi Rao,Song-Yi Liao,Xing-Wen Huang,Yue-Zhu Li,Yi-Dong Liu,Yong-Gang Min
In this work, a few-layer MXene is prepared and sprinkled on a commercial polypropylene (PP) separator by a facile spraying method to enhance the electrochemistry of the Ni-rich LiNi0.8Co0.1Mn0.1O2(NCM811) cathode. Scanning electron microscope (SEM) and X-ray diffraction (XRD) are used to characterize the morphology and structure of MXene. Fourier transform infrared spectroscopy (FT-IR) and a contact angle tester are used to measure the bond structure and surface wettability PP and MXene/PP separator. The effect of the MXene/PP separator on the electrochemical performance of ternary NCM811 material is tested by an electrochemical workstation. The results show that the two-dimensional MXene material could improve the wettability of the separator to the electrolyte and greatly enhance the electrochemical properties of the NCM811 cathode. During 0.5 C current density cycling, the Li/NCM811 cell with MXene/PP separator remains at 166.2 mAh/g after the 100 cycles with ~90.7% retention. The Rctof MXene/PP cell is measured to be ~28.0 Ω. Combining all analyses results related to MXene/PP separator, the strategy by spraying the MXene on commercial PP is considered as a simple, convenient, and effective way to improve the electrochemical performance of the Ni-rich NCM811 cathode and it is expected to achieve large-scale in high-performance lithium-ion batteries in the near future.Keywords:polypropylene composite membrane;MXene;Ni-rich LiNi0.8Co0.1Mn0.1O2;electrochemical performance
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PubMed
高影响因子
ACS Applied Energy Materials
·
2021
·
IF 6.024
Sen Jin,Zuhao Shi,Huijuan Jing,Libo Wang,Qianku Hu,Deliang Chen,Neng Li,Aiguo Zhou
Here, we report a visible-light photocatalyst (Mo2C-MXene/CdS) with H2 production rate higher than that of state-of-the-art catalysts based on noble metals or other MXenes. The photocatalyst was constructed from Mo2C MXene, Cd(NO3)2·4H2O, and thiourea with ethylenediamine, which has an acanthosphere structure with Mo2C two-dimensional (2D) sheets covered by wurtzite CdS nanocrystals. From theoretical calculation, Mo sites in the Mo2C-MXene/CdS(110) heterostructure provide an efficient reaction site for the hydrogen evolution reaction (ΔGH* = −0.18 eV). The electronic structures demonstrate that this heterostructure has favorable band gap and band edge position for water splitting. In experimental measurements, the photocatalyst shows a H2 production rate of 17 964 μmol g–1 h–1. The H2 production is ca. 20% higher than the previously reported value of Ti3C2 MXene catalysts and ca. 11% higher than that of noble-metal catalysts. Therefore, Mo2C-MXene/CdS heterostructure is a promising catalyst with ultrahigh performance to replace noble-metal catalysts.
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高影响因子
Journal of Materials Chemistry C
·
2023
·Vol. 11
·期 31
·10547-10561
·
IF 6.4
Guorong Wang,Guiquan Liu,Zhiliang Jin
The vivacious surface chemistry and impressive electrical conductivity of MXene make it an alternative two-dimensional material for the storage of electrochemical energy. Herein, Ni-based layered double hydroxides (LDHs) were hydrothermal and grown in situ on Ti3C2 to form “sandwich-like” Ti3C2@LDHs. The synthesis of sandwich-like Ti3C2@LDHs enhanced the electrochemical reactivity and energy storage of Ti3C2, but also increased the electrical conductivity and cyclic stability of NiV-LDHs and NiCo-LDHs. The electrochemical properties of Ti3C2@NiV-LDHs and Ti3C2@NiCo-LDHs composite electrodes were greater than those of NiCo-LDHs, NiV-LDHs and Ti3C2, respectively. The optimal mass-specific capacitance of Ti3C2@NiV-LDHs was up to 1346.14 F g−1 (1 A g−1), and that of Ti3C2@NiCo-LDHs was 1120.07 F g−1 (1 A g−1), which is 1.6- and 1.5-times that of NiV-LDHs and NiCo-LDHs, respectively. A Ti3C2@NiV-LDHs//activated carbon (AC) asymmetric supercapacitor cell (ASC) manifested an energy density of 46.34 W h kg−1 (at 1530.61 W kg−1), and the specific capacitance could be maintained at 78.57% after 5000 charge–discharge cycles (10 A g−1). Ti3C2@NiCo-LDHs//AC ASC exhibited an energy density of 50.29 W h kg−1 (at 1522.65 W kg−1) with 81.82% specific capacitance retention after 5000 charge–discharge cycles (10 A g−1). Our results provide a procedure for improving the conductivity and stability of Ni-based LDHs using 2D MXenes in an aqueous asymmetric supercapacitor.
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高影响因子
ACS Applied Energy Materials
·
2022
·
IF 6.959
Ziyu Zhang,Chang Liu,Yunkun Dai,Bo Liu,Pan Guo,Fengdi Tu,Miao Ma,Lixiao Shen,Zigang Zhao,Yangyang Liu,Yunlong Zhang,Lei Zhao,Zhenbo Wang
Carbon supports for cathodic catalysts in proton-exchange membrane fuel cells suffer from rapid corrosion and instability; therefore, alternative supports with a stable structure and a high electric conductivity are highly required. In this paper, a three-dimensional support hybridized by MXene and Ketjen Black is developed, in which Ketjen Black is sandwiched between MXene nanosheets (MCM). After decorating with Pt nanoparticles by a facile wet-chemical approach, a three-dimensional (3D) Pt/MCM catalyst is obtained. The intercalated Ketjen Black prevents the stacking of MXene nanosheets, thus increasing the specific surface area of the catalyst and exposing the active sites. The strong interaction between functionalized MXene nanosheets and Pt nanoparticles further enhances its intrinsic electrocatalytic activity. Pt/MCM demonstrated encouraging ORR activity with the half-wave potential and specific activity of 0.892 V and 0.377 mA·cm–2, respectively, surpassing the state-of-the-art Pt/C catalysts. Especially, Pt/MCM achieves ultrahigh durability with a 1 mV decrease in half-wave potential and a 1.73% decrease in mass activity after an accelerated durability test. Given the performance and structure–activity relationships of Pt/MCM, it holds great potential for various energy and catalysis-related applications.
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高影响因子
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