TRIBOLOGY INTERNATIONAL
·
2022
·
IF 5.62
Yuhong Cui,Shenghua Xue,Xin Chen,Wei Bai,Shujuan Liu,Qian Ye,Feng Zhou
Herein, the MXene@Cu nanocomposites were prepared via electrostatic adsorption of Cu 2+ and then in-situ reduction. The Cu 2+ is uploaded on the surface of MXene nanosheets via electrostatic adsorption, which was followed by in-situ reduction with NaBH 4 to obtain Cu nanoparticle attached MXene (MXene@Cu) hybrids. The results revealed that the friction coefficient of MXene@Cu decrease from 0.434 to 0.110 and the wear volume loss decreased by 88.1% via changing the loading amount of Cu nanoparticles. The excellent tribological performance of MXene@Cu is attributed to the synergistic effect of MXene nanosheets and Cu nanoparticle , which can adsorb on the surface of friction pair and induce tribochemical reaction. A stable protective film is formed on the worn surface, thereby reducing fiction and wear.
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高影响因子
CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Haonan Zhao,Cuilian Wen,Lijin Luo,Jiamin Qian,Xi Lin,Yang Xu,Zhongzhi Tang,Xinyi Wang,Rongtao Zheng,Baisheng Sa
The integration of osteogenic and antibacterial properties into biomaterials is crucial for addressing infected bone defects. Mesoporous bioactive glass (MBG) is widely recognized for its bioactivity and tunable porous structure, making it a promising candidate for bone repair. However, conventional MBG lacks inherent antibacterial properties, limiting its application in postoperative infection management. In this study, we have successfully developed Ti 3 C 2 T x MXene modified MBG (Ti 3 C 2 T x /MBG) nanocomposites with osteogenic and antibacterial properties. The results reveal that the incorporation of Ti 3 C 2 T x MXene significantly enhances the mineralization capability, as evidenced by accelerated hydroxyapatite formation in simulated body fluid within 7 days compared to pure MBG. Notably, the nanocomposite exhibits no cytotoxicity toward MC3T3-E1 cells and markedly upregulates key osteogenic genes, including Alp, Runx2, Col1a1, Opn, and Ocn . Moreover, Ti 3 C 2 T x /MBG nanocomposite displays remarkable photothermal antibacterial efficacy, achieving 99.6% inhibition of Staphylococcus aureus under near-infrared irradiation. This study proposes a versatile strategy to synthesize multifunctional MXene/MBG nanocomposites with enhanced apatite mineralization, osteogenic gene expression, and antibacterial activity, demonstrating great potential for bone tissue engineering and other biomedical applications.
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Small
·
2025
·
IF 12.1
Jiale Niu,Zhenqiang Ye,Junyang Deng,Mingdong Zhang,Guangming Chen
Organic thermoelectric (TE) materials incorporating carbon nanotubes (CNTs) attract substantial research interest due to their flexibility, cost-effectiveness, and processability, showing significant promise for wearable TE devices. However, their practical applications are greatly limited by the low Seebeck coefficient ( S ) and high thermal conductivity ( κ ). To overcome these challenges, in this study, black phosphorus@MXene heterojunctions are rationally engineered into CNT matrix, creating TE composite film. This unique “2D heterojunction-3D network” architecture leverages synergistic energy filtering and interfacial phonon scattering to achieve decoupled optimization of electrical conductivity ( σ ), S and κ . Consequently, the composite film attains a high power factor of 521.4 ± 7.7 µW m −1 K −2 at room temperature with a significantly suppressed κ , yielding a figure of merit of 0.0211. These metrics represent a substantial enhancement over pristine CNTs. Furthermore, the film exhibits excellent flexibility and structural stability, contributing to a flexible TE generator prototype with a high power density of 584 µW cm −2 under a temperature gradient of 60 K. This work provides a viable pathway for high-performance, flexible TE materials in self-powered wearable electronics for health monitoring and thermal management.
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DOI
PubMed
高影响因子
ACS Applied Nano Materials
·
2025
·
IF 5.5
Qianfang Sun,Bingbing Lai,Xiaoyu Wang,Bo Dai,Xuejun Liu,Wenjing Lou
Hydrogels, owing to their outstanding hydrophilicity and remarkable ability to mitigate creep and leakage issues, serve as ideal lubricants. The introduction of nanomaterials such as MXene and graphene oxide (GO) can further enhance the mechanical strength and tribological properties of hydrogels. In this study, MXene/GO-PVA composite hydrogel lubricants were prepared by incorporating the two nanomaterials of MXene and GO into the PVA hydrogel by the chemical cross-linking method, and their tribological properties were systematically investigated. Furthermore, the lubrication mechanism of the MXene/GO-PVA hydrogel was investigated and deduced through multiple analytical techniques. Compared with the base hydrogel and single-component hydrogel, the MXene/GO-PVA hydrogel exhibits the best tribological performance: its coefficient of friction is reduced by 50.68%, and its wear volume is decreased by 63.99% relative to the PVA hydrogel. The inherent low interlayer shear strength and interlayer slip characteristics of MXene and GO, combined with their surface-abundant hydrophilic groups and the synergistic effects generated within the three-dimensional PVA hydrogel network, collectively contribute to the excellent lubrication performance. This study offers insights into the development of high-performance water-based lubricants.
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DOI
高影响因子
LANGMUIR
·
2025
·
IF 3.9
Lu Tang,Kechen Zhou,Qirui Wu,Sinan Feng,Wenchuan Wang,Ji-an Li,Sirui Tan,Dawen Zeng
Crack-structured flexible strain sensors have attracted considerable interest in the field of flexible electronics due to their notable sensitivity and stretchability. However, crack propagation in these sensors restricts the strain range and compromises compatibility by collapsing the conductive network and degrading the interfacial adhesion. This research proposes a PVA optimization strategy based on the layer-by-layer assembly method, leading to the development of a PVA buffer layer-reinforced TPU @ MXene (MPTPU) fiber strain sensor. The incorporation of the PVA buffer layer improves interfacial adhesion and effectively alleviates stress concentration, thus broadening the effective sensing range of MPTPU. Additionally, hydrogen bonding within MPTPU improves the uniformity and adhesion of the conductive coating, enhancing the interfacial compatibility. The carefully engineered multilayer composite structure significantly boosts the sensor’s performance and stability, exhibiting a sensitivity of 12.8, 50% stretchability, a detection threshold of 0.1%, and durability exceeding 10,000 stretching cycles. Furthermore, MPTPU demonstrates effective bending sensing performance and washability, making it well-suited for integration into textiles. The strain sensor accurately detects a wide range of human motions. With these advantages, such sensors hold great promise for applications in motion detection, health management, and wearable smart devices.
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DOI
PubMed
高影响因子
Environmental Science-Nano
·
2025
·
IF 5.1
Weibiao Ye,Wenhao Lao,Lan Wu,Dong-Xing Guan,Chao Zhang,Yiping Feng,Liang Mao
2D MXene nanosheets are increasingly attracting interest due to their promising applications in materials science and biomedicine. However, the environmental fate of MXenes, particularly their biotransformation, is poorly understood. Here, the biodegradability of Ti3C2 MXene nanosheets was investigated using a plant horseradish peroxidase (HRP)-mediated reaction. The degradation rates of Ti3C2 MXene nanosheets were determined to be first-order in both HRP and H2O2 dosage. Material characterizations and product identifications revealed that peroxidase-catalyzed the oxidation of Ti3C2 MXene in the presence of H2O2, resulting in the formation of holes on its basal plane, the generation of titanium dioxide (TiO2) nanoparticles, and the release of CO2. The assessment using Daphnia magna revealed visible toxicity and enrichment of Ti3C2 MXene to aquatic organisms, with LC50 values of pristine Ti3C2 MXene to Daphnia as 55.41, 7.24, and 2.97 mg L-1 at 48, 72, and 96 h, respectively. Substantial accumulation (74.30 μg Ti mg-1 of dry tissue) of Ti3C2 MXene by Daphnia was observed after 48 h of exposure. Furthermore, the biological effects of HRP-degraded Ti3C2 MXene products on Daphnia were examined. Although the toxicity to Daphnia was reduced, a substantial increase in the bioaccumulation of Ti3C2 MXene biodegradation products (137.36 μg Ti mg-1 of dry tissue) was observed. These findings reveal that enzymatic degradation alters the size and surface chemistry of Ti3C2 MXene, potentially changing its toxicity and altering its environmental compatibility.
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高影响因子
ACS Nano
·
2025
·
IF 16
Yongmei Chen,Xinyu Zhang,Yan Liu,Zhengkun Liu,Zijie Li,Zhiqi Li,Xiaman Chen,Jiayi Liu,Zihao Chen,Guangquan Mo,Yong Xia,Lei Mou
The development of portable, cost-effective, and highly sensitive biosensors for real-time biomarker detection is crucial for advancing point-of-care testing (POCT) and wearable health monitoring. Here, we present an integrated portable electrochemical sensor (ip-ECS) that combines gold nanoparticles (AuNPs) and MXene-modified screen-printed electrodes (SPEs) with a custom-designed, low-power electronic system for point-of-care monitoring of serum biomarkers. The AuNPs and MXene nanocomposite significantly enhances the electrochemical performance of the SPE by providing a high density of active sites, improved conductivity, and catalytic activity. The detection of two model molecules (DA and UA) validated the feasibility of ip-ECS, achieving detection limits as low as 1.12 and 1.11 μM for UA and DA, respectively. Furthermore, the ip-ECS was successfully applied to detect Cys C in human serum, showing a linear response in the range of 50–5000 ng/mL and a strong correlation (ρ = 0.9556) with conventional latex immunoturbidimetry (LIA). Clinical validation using serum samples from pregnant women revealed elevated Cys C levels in gestational diabetes mellitus (GDM) patients, highlighting the sensor’s potential for early GDM risk prediction. The ip-ECS represents a significant step forward in the development of next-generation biosensors for POCT, wearable diagnostics, and personalized medicine.
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DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Shiquan Li,Jianhua Zhu,Wei Lu,Zhaoxi Liu,Zhuosen Wang,Liu Wang,Yapeng Tian,Xinwei Cui
Sodium-selenium (Na-Se) batteries have gained attention due to their high energy density and power density, resulting from the liquid–liquid reaction at the interface in the dimethoxyethane electrolyte. Nevertheless, the pronounced shuttle effect of polyselenides causes low coulomb efficiency and inadequate cycling stability for Na-Se batteries. Herein, the iron nanoparticles surface modified accordion-like Ti 3 C 2 T x MXene (MXene/Fe) synthesized via the molten salt etching is utilized as the host of Se species for high-performance Na-Se battery cathode. Benefiting from the layered structure and chemical adsorption of accordion-like MXene, the shuttle effect of the cathode is effectively inhibited. Simultaneously, electrochemical kinetics is boosted due to the catalytic effect of Fe nanoparticles, which facilitate the transformation of polyselenide from long-chain to short-chain, contributing to pseudocapacitive capacity. Consequently, the Se-based cathode delivers a steady capacity of 575.0 mA h g −1 at 0.2 A/g, and even a high capacity of 500 mAh/g at 50 A/g based on the mass of Se@MXene/Fe electrode, indicating the ultrafast Na + ion storage. Most notably, this structure demonstrated remarkable long-term cycling stability for 5000 cycles with a high capacity retention of 97.4 %. The electrochemical energy storage mechanism is further revealed by in situ Raman. Herein, the confinement-catalysis structure shines light on inhibiting shuttling and facilitating ultrafast ion storage.
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高影响因子
Nanoscale Advances
·
2021
·Vol. 3
·期 19
·5683-5693
·
IF 4.553
Yue Zhu,Xingbin Zhao,Qingyu Peng,Haowen Zheng,Fuhua Xue,Pengyang Li,Zhonghai Xu,Xiaodong He
With the development of multifunction and miniaturization in modern electronics, polymeric films with strong mechanical performance and high thermal conductivity are urgently needed. Two-dimensional transition metal carbides and nitrides (MXenes) have attracted extensive attention due to their tunable surface chemistry, layered structure and charming properties. However, there are few studies on using MXenes as fillers to enhance polymer properties. In this paper, we fabricate a three-dimensional foam by the freeze-drying method to enhance the interfacial interaction between adjacent MXene sheets and polyimide (PI) macromolecules, and then a composite film with a dense and well-ordered layer-by-layer structure is produced by the hot-pressing process. Based on the secondary orientation strategy, the resultant MXene/PI film exhibits an enhanced thermal conductivity of 5.12 ± 0.37 W m−1 K−1 and tensile strength of 102 ± 3 MPa. Moreover, the composite film has good flexibility and flame retardancy owing to the synergistic effect of MXene sheets and PI chains. Hence, the MXene/PI composite film with the properties of flexibility, flame-retardancy, high mechanical strength and efficient heat transmission is expected to be used as the next thermal management material in a variety of applications.
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International Journal of Applied Ceramic Technology
·
2023
·Vol. 21
·期 2
·1220-1230
·
IF 2.1
Yi Qin,Mengxue Wang,Xiaohan Li,Yajuan Zhang,Shenglai Tang,Jianfeng Zhu,Ting Zhao
SnSe-based materials have attracted widespread attention in thermoelectrics due to their outstanding thermoelectric performance. However, the pristine and unmodified polycrystalline SnSe reveals poor electrical properties. Doping and constructing nanostructured composite architectures to produce energy filtering effect proved to be an effective method to strengthen thermoelectric performance. In this study, Ti 3 C 2 /Sn 0.98 Cd 0.02 Se composites are successfully fabricated by the solvothermal method combined with the electrostatic self-assembly method and spark plasma sintering. The phase interface introduced by incorporating Ti 3 C 2 into Sn 0.98 Cd 0.02 Se can effectively filter low-energy carriers due to its generation of energy barriers, thereby the Seebeck coefficient of x wt% Ti 3 C 2 /Sn 0.98 Cd 0.02 Se x = (0.05, 0.5, 1) samples is better than that of the pristine Sn 0.98 Cd 0.02 Se over the whole temperature range. Meanwhile, high conductivity was also obtained in 1 wt% Ti 3 C 2 /Sn 0.98 Cd 0.02 Se sample so that the high power factor of 3.31 μWcm −1 K − 2 was acquired at 773 K. Ultimately, a peak ZT value of 0.41 was obtained at 773 K, compared with pristine Sn 0.98 Cd 0.02 Se, and the thermoelectric performance improved by 24%. This study offers an available approach to efficiently enhance the thermoelectric properties of polycrystalline SnSe-based materials.
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高影响因子
CARBON
·
2022
·
IF 11.307
Wenjun Huyan,Junru Yao,Jiaqi Tao,Feng Yang,Xuewei Tao,Zhengjun Yao,Jintang Zhou,Zibao Jiao
0D-2D Polydopamine (PDA)-derived carbon nanoparticles @ MXene composites (PCM) with high microwave absorption properties were prepared by in-situ self-polymerization combined with vacuum pyrolysis . As the “nano clothing” of MXene , the moderate accumulation of PDA-derived carbon nanoparticles makes enough interface contact with MXene nanosheets , which not only improves the impedance matching of MXene reasonably but also optimizes the dielectric loss . Based on the multi-dimension structure and multi-component synergistic effect , when the filling amount of the composite is only 7.5 wt% and the thickness is 2.8 mm, the best reflection loss at 10 GHz is −46.92 dB and the maximum effective absorption bandwidth is 7.01 GHz. This work provides a synthesis strategy of crystal/amorphous heterointerface and offers a new way for the preparation of lightweight, broadband, and efficient microwave absorption materials , showing great application potential.
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高影响因子
Journal of Environmental Chemical Engineering
·
2022
·
IF 7.968
Si-ruo Chen,Ting Wang,Xinyi Zhuo,Yu-xing Wang,Li-guang Wu
Aiming to enhance permeation and anti-fouling performance of PVDF membrane, IL/PVDF and MXene-IL/PVDF mixed matrix membranes (MMMs) were fabricated by incorporating 1-hexyl-3-methylimidazolium bis (trifluoromethylsulfonyl) imide ionic liquid (IL) and MXene-IL. The microstructures of IL/PVDF and MXene-IL/PVDF MMMs were characterized by TEM, SEM, FTIR, XRD, and XPS analysis. The performance of the MMMs was evaluated in the dead-end filtration, and results showed that IL addition would increase the pore size and hydrophilicity of IL/PVDF MMMs, thereby enhancing water flux and anti-fouling performance of the MMMs. However, IL would be dissolved out from IL/PVDF MMMs during the filtration process, which would depress the flux recovery rate of the MMMs. For MXene-IL/PVDF MMMs, IL was encapsulated by intercalating into the MXene nanosheets and effectively prevented the loss of IL from Mxene-IL/PVDF MMMs in the running process. MXene-IL/PVDF MMMs had high water flux and antifouling performance, and the maximum flux recovery rate of MXene-IL co-incorporated PVDF MMMs reached 96% after four-cycle filtration, and the corresponding water flux was 129.37 L·m −2 ·h −1 . Compared with PVDF membrane, pure water flux and flux recovery rate of MXene-IL/PVDF mixed matrix membranes increased by 4.37 and 1.83 times, respectively.
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