Journal of Materials Chemistry B
·
2024
·
IF 6.1
Yi Tan,Huan Sun,Yuanchen Lan,Haider Mohammed Khan,Hui Zhang,Linli Zhang,Fengying Zhang,Yujia Cui,Lan Zhang,Dingming Huang,Xinmei Chen,Changchun Zhou,Jianxun Sun,Xue-Dong Zhou
The repair of mandibular defects remained a challenging problem in the clinic, and the associated infection often hinders the treatment, leading to failure in bone regeneration. Herein, a multifunctional platform is designed against the shortages of existing therapies for infected bone deficiency. 2D Ti3C2 MXene and berberine (BBR) are effectively loaded into 3D printing biphasic calcium phosphate (BCP) scaffolds. The composite scaffolds take the feature of the excellent photothermal capacity of Ti3C2 for antibacterial and mediating the NIR-responsive BBR release under laser stimuli. Meanwhile, the sustained release of BBR enhances the antibacterial effect and further accelerates the bone healing process. Importantly, the integration of Ti3C2 improves the mechanical properties of 3D scaffolds, beneficial for new bone formation. The remarkable biomedical performances in vitro and in vivo present the outstanding antibacterial and osteogenic properties of Ti3C2-BBR functionalized BCP scaffolds, which the synergetic therapy makes it highly promising for repairing infected bone defects, as well as provides insight into the broader applications of 2D nanosheets in biomedicine.
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高影响因子
APPLIED SURFACE SCIENCE
·
2024
·
IF 6.3
Li Liu,Tao Chen,Liping Han,Zhuo Qian,Junpeng Li,Guoyou Gan
The Thermal Conductive Silver Adhesive (TCSA) efficiently transfers heat from electronic components to heat dissipation components, preventing overheating and extending device lifespan. Despite the effectiveness of commercial sintered nano TCSA, high production costs necessitate a more affordable, high-performance preparation method. This study presents a strategy for preparing ultra-high thermal conductivity (TC) TCSA using multidimensional thermal conductive fillers and low-temperature sintering of silver nanoparticles (AgNPs). MXene@AgNPs particles are synthesized via in-situ reduction of AgNPs on MXene surfaces. These particles, combined with silver microflakes (AgMFs) as primary fillers and epoxy (EP), undergo low-temperature heat treatment to form the AgMFs-MXene@AgNPs/EP composite. Characterization and computational models show that filler-filler interface thermal resistance (ITR f-f ) is critical for TC. Adding MXene alone is insufficient, but using MXene@AgNPs particles as secondary fillers allows AgNPs to interconnect fillers, effectively reducing the ITR f-f . The resulting composite achieves an ultra-high TC of 65.51 Wm −1 K −1 with 63 wt% total filler content (60 wt% AgMFs, 3 wt% MXene@AgNPs). This study advances the development of low-cost, high-performance TCSA for thermal management applications.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Mengdan Yang,Yan Zhang,Meng Li,Weixue Meng,Ding Zhang,Jie Xu,Yingjiu Zhang,Fengmei Guo,Yuanyuan Shang,Anyuan Cao
MXene exhibits exceptional electrical and electrochemical properties, and is regarded as a promising candidate for future wearable electronic products. However, achieving a balance between flexibility and capacitance performance in MXene-based fiber supercapacitors remains a challenge. Here, MXene/Thermoplastic polyurethane (TPU) composite fibers with good conductivity and tensile properties, were prepared by wet spinning method. A carbon nanotube (CNT) film with continuous network structure was introduced on the surface of MXene/TPU composite fiber as a conductive interfacial layer to deposit a uniform and dense polypyrrole (PPy) array controllably. This structure is beneficial for improving the utilization of PPy and can enhance the overall strength and flexibility of composite fibers. The MXene/TPU/CNT@PPy composite fiber electrode demonstrates promising electrochemical performance, with a specific capacitance of 579F/cm 3 (at a current density of 1 A/cm 3 ). The assembled flexible fiber supercapacitor exhibits a power density of 499.8 mW/cm 3 and a corresponding energy density of 16.3 mWh/cm 3 (1 A/cm 3 ), suggesting potential applications in flexible and wearable energy storage devices and textiles.
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高影响因子
ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Shuying He,Yuerong Lv,Jingnan Qiu,Shudan Cui,Zixian Gao,Liang Peng
Treating metabolic dysfunction-associated fatty liver disease (MAFLD) and reducing the occurrence of MAFLD-associated liver cancer remain challenging. Two-dimensional (2D) tantalum carbide (Ta4C3) MXene nanozymes (MXenzymes) exhibit antioxidant and anti-inflammatory activities and have thus attracted considerable attention in the fields of oncology and engineering. However, the potential mechanism of action and bioactive properties of Ta4C3 in MAFLD remain uncertain. In our study, Ta4C3 not only inhibited lipid accumulation and disrupted lipid metabolism in hepatocytes but also reduced cell death caused by fatty acids by decreasing intracellular reactive oxygen species (ROS) levels, which significantly promoted the polarization of M1 macrophages to M2 macrophages by alleviating oxidative stress and further suppressing inflammatory factor expression. In mice fed a methionine–choline-deficient (MCD) diet, Ta4C3 reduced lipid accumulation, the infiltration of inflammatory cells, and liver cell apoptosis by modulating the cellular microenvironment through its anti-inflammatory and antioxidant properties. Therefore, Ta4C3 can be used as a multifunctional bioactive material to alleviate hepatic steatosis and inflammation in individuals with MAFLD/metabolic dysfunction-associated steatohepatitis (MASH) because of its robust antioxidant and anti-inflammatory effects.
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JOURNAL OF MEMBRANE SCIENCE
·
2024
·
IF 8.4
Qiang Xue,Wenqiao Meng,Yi Li,Qing Fang,Kaisong Zhang
The traditional 2D nanosheets, given its relatively large size, has obstacles in water transmission and may also cause non-selective defects in polyamide membranes. To account for size effects, we successfully synthesized MXene quantum dots (MQDs) with ultra-small size through simple hydrothermal reaction, which were then utilized to construct MQDs polyamide nanofiltration membranes. Compared to the blank membrane, the MQDs membranes prepared obtained remarkable improvements in permeance and salt rejection, achieving a water permeance of 16.3 Lm −2 h −1 bar −1 and Na 2 SO 4 rejection of 98.2%. Furthermore, MQDs membranes demonstrate exceptional antifouling properties and long-term performance stability. Molecular simulation reveals that the incorporation of MQDs effectively restricts the diffusion of piperazine (PIP) into the organic phase, thereby forming a loose membrane structure. Simulation of the transport process confirms that the loose membrane structure is more conducive to water transport, and exhibits reduced contact force between bovine serum albumin (BSA) pollutants and the surface of MQDs membranes. This work sheds light on high-performance nanofiltration via MQDs-regulated interfacial polymerization strategy.
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CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Wang Guo,Zhiqiang Ma,Zhou Chen,Haojun Hua,Dong Wang,Mohamed Elhousseini Hilal,Yatian Fu,Pengyi Lu,Jian Lu,Yuanting Zhang,Derek Ho,Bee Luan Khoo
Increasing demand for flexible sensors in healthcare has spurred the development of nanomaterial-polymer composite sensors. However, existing pressure sensors suffer from low sensitivity due to poor interactions between the functional filler and the polymer matrix. For example, the direct chemical bonding of nanomaterials to the surface of chemically inert polymers such as polydimethylsiloxane (PDMS) is not easily achieved. Herein, we demonstrate that MXene can significantly promote the sensitivity of a thin and soft piezoresistive sensor based on a surface functionalized PDMS (FPDMS) sponge. Using plasma treatment, we constructed a MXene-FPDMS (MFP) sponge with high mechanical strength via the interlayer hydrogen bonding effect. The formed MFP sponge structure (∼450 μm in thickness) endows the pressure sensor with a high sensitivity of 14.2 kPa −1 and a low modulus of 9.7 kPa, critical for detecting ultra-low pressures. When operated with deep learning algorithms, the MFP sponge sensor successfully classifies the pronunciation of 26 letters and various polite expressions with an average accuracy of 94 ± 0.6 %. We envision that this work paves the way for the development of intelligent wearable platforms.
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JOURNAL OF MATERIALS SCIENCE
·
2025
·
IF 3.9
Zhang YaXi,Liang Jin,Zhang Li,Zou FengYuan,Li YunFeng,Zeng ZiQuan,Lei Tian,Yang Guang
As a clean energy carrier, hydrogen necessitates efficient production via cost-effective, highly active non-noble metal electrocatalysts. Herein, we demonstrate a Zn-doped CoP heterostructure catalyst anchored on MXene-engineered nickel foam (MXene@ZnCoP/NF) through synergistic substrate engineering and compositional modulation. This design achieves exceptional alkaline hydrogen evolution reaction (HER) activity and superior overall water splitting efficiency. In 1.0 M KOH electrolyte, the MXene@ZnCoP/NF heterostructure exhibits exceptional HER performance, achieving a low overpotential of 15 mV at 10 mA cm −2 , 64 mV at 50 mA cm −2 , 214 mV at 500 mA cm −2 , and a Tafel slope of 86.0 mV dec −1 , indicative of rapid reaction kinetics. Furthermore, the catalyst demonstrates industrial-grade durability, maintaining stable operation for 65 h at 500 mA cm −2 without significant degradation. When integrated into a full-cell electrolyzer with RuO 2 /NF as the anode (RuO 2 /NF ||MXene@ZnCoP/NF), the system requires only 1.53 V to deliver a current density of 10 mA cm −2 , surpassing the performance of the noble metal system Pt-C/NF||RuO 2 /NF (1.61 V). This highlights its potential as a cost-effective alternative to noble metal-based electrocatalysts for scalable hydrogen production. The enhanced catalytic performance can be primarily attributed to the synergistic interplay of three key factors: the superior conductivity provided by MXene-engineered NF substrates, the Zn doping-induced crystalline-to-amorphous phase reconstruction, and the morphological transformation from micrometer-scale architectures to nanoscale structures. This study proposes an innovative “substrate–structure–composition” synergistic strategy that establishes a new paradigm for designing highly efficient non-noble metal HER electrocatalysts, thereby propelling the scalable industrial implementation of electrocatalytic water splitting for hydrogen production. Graphical abstract
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ADVANCED FUNCTIONAL MATERIALS
·
2024
·Vol. 35
·期 17
·2422374
·
IF 18.5
Zhaoling Huang,Chengqi Ge,Siyuan Li,Miao Cai,Yun Hui,Xinqin Liao,Qi Zeng
MXene films possess excellent controllable electrical conductivity, mechanical and chemical characteristics, showing great potential in the construction of new-generation flexible wearable devices. However, achieving multifunctional applications of MXene through simple and scalable methods is a major challenge. Inspired by skin tissue, a pyrolysis-MXene flexible film (P-MX) with randomly microspine-like and internal hollow coupled structure is prepared through the combination of interface-induced self-assembly, solution thermal deposition, and high-temperature pyrolysis methods. The multi-level structure provides more variable conductive paths during compression and ensures structural integrity under high pressure. The synergistic treatment of oxygen plasma and polyvinyl alcohol (PVA) enhances adhesion strength highest up to 46.87 times compared to a single surface treatment strategy between P-MX sensitive components and flexible substrate. Such P-MX sensor demonstrates an extremely high sensitivity (76.79 kPa −1 within 0–25.39 kPa), a wide detection range (up to 1275.19 kPa), fast response/ recovery time (22 ms/32 ms), and high cycle reliability (over 18 000 cycles). It can also perceive weak signals (12 mg/4.8 Pa). Additionally, P-MX exhibits a significant increment in specific capacitance. It exhibits excellent prospects in human-machine interaction, neural electrodes, and motion detection. These findings open new pathways for the practical application of MXene-based wearable piezoresistive devices and bioelectronics.
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高影响因子
Advanced Science
·
2022
·Vol. 9
·期 7
·2101988
·
IF 17.521
Junjie Yang,Jianqiao Wang,Huiqin Li,Ze Wu,Youqiang Xing,Yunfei Chen,Lei Liu
In the design of electromagnetic (EM) wave absorbing materials, it is still a great challenge to optimize the relationship between the attenuation capability and impedance matching synergistically. Herein, a 3D porous MoS 2 /MXene hybrid aerogel architecture with conformal heterogeneous interface has been built by atomic layer deposition (ALD) based on specific porous templates to optimize the microwave absorption (MA) performance comprehensively. The original porous structure of pristine Ti 3 C 2 T x aerogel used as templates can be preserved well during ALD fabrication, which prolongs the reflection and scattering path and ameliorates the dielectric loss. Meanwhile, plenty of heterointerfaces between MoS 2 and Ti 3 C 2 T x have been fabricated based on conformally ALD-deposited MoS 2 with controlled thickness on the porous surfaces of the templates, which can effectively optimize the impedance matching and transform its response to EM waves from shielding into absorbing. Moreover, the interaction between the attenuation capability and impedance matching can also be modulated by the number of ALD cycle in MoS 2 fabrication. After optimization, MoS 2 /MXene hybrid aerogel obtained under 300 ALD cycles shows a minimum reflection loss of −61.65 dB at the thickness of 4.53 mm. In addition, its preferable lightweight, high surface area, mechanical, and hydrophobicity properties will also be conducive to further practical applications.
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ACS Applied Nano Materials
·
2025
·
IF 5.5
Zhaoqing Lu,Yajie Kou,Li Hua,Xiaoxu Xu,Lizhi Song,Shangjie Yu,Shan Wang,Xing-Xiang Ji,Dinggen Hu,Wei-Jing Chen
The industrialization process accelerates more and more kinds of volatile gas, with serious threats to the environment or human health having received great attention. Therefore, rapid real-time monitoring of harmful gases is urgently needed. This study investigated the gas-sensitive properties of an aramid nanofiber/MXene nanosheet (ANF/MXene) composite aerogel for detecting ammonia (NH3) at room temperature. Initially, two-dimensional (2D) MXene nanosheets were synthesized by removing Al atoms from Ti3AlC2 (MAX phase), which were then combined with ANF to produce a porous composite aerogel through freeze-drying. At room temperature, the response value of the ANF/MXene aerogel to 50 ppm of NH3 was approximately 4.96%, with a rapid recovery time (28 s), and remained stable even after 10 cycles. Additionally, the aerogel exhibited excellent long-term stability, lasting up to 45 days. Moreover, the ANF/MXene composite aerogel showed outstanding flexibility and flame retardancy, and it could bend and recover at low temperatures (−196 °C). As a result, the good gas-sensitive properties and stable mechanical properties enable the ANF/MXene aerogel to be suitable for flexible wearable sensor devices toward different environmental conditions in the future.
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ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Siyuan Diao,Lili Meng,Christian Mark Pelicano,Jiajia Huang,Zhihong Tian,Feili Lai,Tianxi Liu,Shaokui Cao
Photothermal responsive hydrogels are widely used in bionic soft actuators due to their remote-controlled capabilities and flexibility. However, their weak mechanical properties and limited responsiveness hinder their potential applications. To overcome this, we developed an innovative laponite/MXene/PNIPAm (LxMyPN) nanocomposite hydrogel that is mechanically robust and exhibits excellent photothermally responsive properties based on abundant hydrogen bonds. Notably, laponite clay is used as a co-cross-linking agent to improve the mechanical properties of LxMyPN hydrogel, while MXene nanosheets are added to promote the photothermal responsiveness. The resulting L3M0.4PN nanocomposite hydrogel exhibits enhanced mechanical properties, with a compressive strength of 0.201 MPa, a tensile strength of 90 kPa, and a fracture toughness of 27.25 kJ m–2. In addition, the L3M0.4PN hydrogel displays a deswelling ratio of 73.6% within 60 s and experiences an excellent volume shrinkage of 82.4% under light irradiation. Furthermore, hydrogel actuators with fast response behaviors are constructed and employed as grippers capable of grasping and releasing target objects. Overall, this high-strength and fast-responsive hydrogel actuator is beneficial to paving the way for remote controlled soft robots.
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高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2024
·
IF 8
Yuhui Liu,Alei Dang,Xin Liu,Xiangkai Wang,Amir Zada,Jiahe Chen,Xiaoyi Fan,Tingkai Zhao,Jing Li,Tiehu Li
Developing flexible substrates with high sensitivity, good reproducibility and recyclability is a major challenge in surface enhanced Raman scattering (SERS) research. Herein, we prepare a recyclable Ti 3 C 2 MXene/ZnO quantum dots (Ti 3 C 2 /ZnO) heterostructure film as an efficient SERS sensor with remarkable flexibility using vacuum assisted filtration technique. Benefiting from the more charge transfer (CT) paths, higher CT efficiency provided by oxygen vacancies (OVs) in ZnO QDs and Schottky barrier between Ti 3 C 2 and ZnO QDs, the limit of detection (LOD) for 4-mercaptopyridine (4-MPY) molecules was as low as 1×10 −7 M. In addition, the prepared flexible SERS film provided uniform and stable signals for both temporal (storage at room temperature for 60 days) and spatial (RSD = 10.7 %) scales due to the optimal distribution of ZnO QDs in the macroscopic assembly of Ti 3 C 2 /ZnO hybrid with excellent reliability and durability. Moreover, the prepared novel flexible SERS sensor achieved self-cleaning by photocatalytically degrading methylene blue (MB) residues extracted from the surface of orange peels and showed exceptional reusability during the detection process. Thus, this high-efficiency and low-cost flexible recyclable SERS sensor may be useful for the in-situ molecular detection in food security and environmental protection.
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