Advanced Materials Interfaces
·
2020
·Vol. 7
·期 6
·1901839
·
IF 4.948
Yang Hu,Lin Wang,Tingrui Lin,Na Zhao,Mengni Shi,Jing Peng,Jiuqiang Li,Weiqun Shi,Maolin Zhai
As a new family of 2D materials, MXenes have already shown a broad application prospect in energy storage. However, the inevitable restacking of MXene nanosheets always limits their performance. Here, a facile and environmentally friendly approach is developed to fabricate self-assembly Ti 3 C 2 T x MXene (named SA-Ti 3 C 2 T x ) via γ-irradiation. The absorbed dose has obvious influence on the self-assembly of SA-Ti 3 C 2 T x by changing the surface charge characteristics and groups to make the nanosheets assembled into large slices with different structure. At dose of 20 kGy, radiation-synthesized SA-Ti 3 C 2 T x (SA-Ti 3 C 2 T x -20) possesses the crumpled structure which exhibits larger specific surface area, enhanced conductivity, and larger specific capacitance, compared with those of original Ti 3 C 2 T x . SA-Ti 3 C 2 T x -20 also shows excellent rate performance and cycling stability. This study paves the way for the modification and assembly of MXenes with improved electrochemical performance.
研究领域:
材料科学
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电化学
·
纳米科技
·
能源存储
·
高分子化学
·
表面科学
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高影响因子
TRIBOLOGY INTERNATIONAL
·
2024
·
IF 6.1
Kaipeng Zhang,Xiaoliang Shi,Qipeng Huang,Weiheng Chen
The superior tribological properties of bearings with low friction appear to be actualized by not a single lubrication , but the adaptive multi-mode co-lubrication in which the interface can adjust according to the friction conditions . This study attempts to reveal the friction adaptive mechanism of textures under grease lubrication. The single-stage linear groove surfaces (SLGSs) and the multi-stage bionic texture surfaces (MBTSs) were respectively designed, and MXenes lithium composite grease (MLCG) with MXenes as an additive was prepared. Compared with the non-textured surface, the friction coefficient of MBTS-1.5 is reduced by 67.6%, and the wear rate is reduced by 45.4%. The friction contact area presents an adaptive multi-mode lubrication trend from oil to grease-solid synergistic lubrication.
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高影响因子
JOURNAL OF FOOD COMPOSITION AND ANALYSIS
·
2025
·
IF 4.6
Feng Zhou,Shijie Liu,Yuanyuan Zhao,Xinzhi Liu,Danfeng Qin,Hua Liu
In this work, a high-sensitivity electrochemical sensor was developed using a hybrid strategy, where sheet-like MXenes-based composites (Bi-MOF/MXenes) were prepared through the in-situ growth of bismuth-based metal-organic frameworks (Bi-MOF) on the MXenes surface. This hybrid composite material was fabricated using a simple physical synthesis method, which maintains excellent electrocatalytic activity while enhancing the electron transfer rate and electroactive surface area. The Bi-MOF/MXenes modified electrode has been demonstrated to be an effective tool for the detection of nitrite. The electrode exhibited a remarkable limit of detection (LOD) of 0.028 μM and a wide linear range of 0.5~4715 μM. The sensor exhibited remarkable repeatability and reproducibility, with relative standard deviation (RSD) values of 1.74% and 4.87%, respectively. The proposed approach was effectively utilized for detecting nitrite in sausage and fermented bean curd.
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高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2023
·Vol. 33
·期 40
·2301994
·
IF 19
Zhaoxi Liu,Yapeng Tian,Shiquan Li,Liu Wang,Buxing Han,Xinwei Cui,Qun Xu
The design of pseudocapacitive electrodes that exhibit high-rate and high volumetric capacitances is a big challenge, since it requires subtle modulation of ion-intercalation structures that are able to achieve high electrochemical activity, fast ion transport, and facilitated electron transfer, simultaneously. Herein, controllable and selective etching of B atoms from B-doped Ti 3 AlC 2 precursors is reported, which generates boron-vacancy doped MXene (B-V-MXene) nanosheets with finely-regulated, ion-intercalation structures. Electrochemical studies and density-functional-theory calculations demonstrate that Ti around vacancies possess higher surface-redox activity with protons than those on pristine MXenes for the improvement of capacitances. In addition, interlayer spacing can be optimized on B-V-MXenes in promoting proton intercalation. More importantly, the dopant B atoms can increase the electron density on Ti, facilitating the adsorption of the intercalated protons; and further, B 2p-Ti 3d hybridized band sits closer to the Fermi energy than that of C 2p bands, which bridges the energy gap for electron transfer in the pseudo-capacitive reaction. With synergy of all these effects, the novel B-V-MXene compact electrodes can deliver the previously unmatched high volumetric capacitances of 807 F cm −3 at 1,000 mV s −1 and 1,815 F cm −3 at 5 mV s −1 , with excellent cycle stability over 10,000 cycles.
研究领域:
材料科学
·
电化学
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DOI
高影响因子
Journal of Materials Chemistry A
·
2019
·Vol. 7
·期 17
·10273-10281
·
IF 10.733
Yijie Hu,Hao Zhuo,Qingsong Luo,Yaxiao Wu,Rui Wen,Zehong Chen,Linxiang Liu,Linxin Zhong,Xinwen Peng,Runcang Sun
Compressible and conductive materials (CCMs) have important applications in developing pressure sensors for various wearable devices. However, it is a great challenge to fabricate a CCM with superior mechanical properties and ultrahigh linear sensitivity. Herein, we developed a green and effective method to fabricate a lightweight, compressible and conductive aerogel by connecting Ti3C2 nanosheets into continuous and ordered lamellae with a biomass polymer (chitosan). Due to the connecting effect, the lamellae are flexible, highly compressible and elastic as well as structurally stable. These features allow the aerogel to withstand extremely high strain (99%), long-term compression (up to 150 000 cycles), and repeated bending. Furthermore, due to the unique lamellar architecture, the aerogel demonstrates an ultrahigh sensitivity (80.4 kPa−1) and exceptionally wide linear range (within strain of 0.5–70%). In addition, it has low detection limits for tiny strain (0.5%) and pressure (1.0 Pa). Due to these advantages, the aerogel shows potential for application in flexible wearable devices for detecting biosignals.
研究领域:
材料科学
·
生物医学工程
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DOI
高影响因子
POLYMER
·
2019
·
IF 3.771
Zhong-Jie Liu,Chuan-Gen Yin,Volkan Cecen,Jin-Chen Fan,Peng-Hui Shi,Qun-Jie Xu,Yu-Lin Min
Recently, polymer-based thermal management materials have been receiving more and more attention. Always, introducing the thermal conductive nanofillers to prepare polymer composites is one of the best ways to improve the thermal conductivity (TC) of the polymer. However, the simple and effective way to improve thermal conductivity by increasing fillers loading amount often brings the decrease of mechanical property resulted by agglomeration. Herein, we combined 2D transition metal carbides (Ti 3 C 2 T x ), and functionalized boron nitride nanosheets (f-BNNS) together for simultaneously enhancing the TC and mechanical property of polybenzimidazole (PBI)-based composites. As the loading amounts of f-BNNS-Ti 3 C 2 T x reached 25 wt% (f-BNNS: 12.5 wt%, Ti 3 C 2 T x : 12.5 wt%), the in-plane and through-plane TCs of the f-BNNS-Ti 3 C 2 T x /PBI composite film reach ~5.06 and ~3.44 W m −1 K −1 which are ~12.05 and ~8.19 times higher than those of neat PBI film. More notably, the synergistic effect of interspace-filling and bridging between f-BNNS and Ti 3 C 2 T x also prevents the agglomeration and facilitates the improvement of mechanical property, even at a high loading amount of 25 wt%, the yield and ultimate tensile strengths of f-BNNS-Ti 3 C 2 T x /PBI composite film are ~175.5 and ~189.6 MPa with increases of ~61.1% and ~39.8% compared to those of neat PBI.
研究领域:
材料科学
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热管理材料
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复合材料
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DOI
高影响因子
ACS Applied Materials & Interfaces
·
2023
·
IF 9.5
Minying Wu,Jianqiang Yang,Tong Ye,Baoxin Wang,Yi Tang,Xinjiang Ying
Ti3C2Tx MXene is a versatile two-dimensional material that exhibits exceptional properties, such as an abundance of surface functional groups that facilitate modifications. Additionally, Ti3C2Tx MXene possesses remarkable photothermal effects. In this study, ultrathin Ti3C2Tx nanosheets with dimensions (∼200 nm) suitable for biological applications were prepared by ultrasonication of larger pieces of Ti3C2Tx MXene with a cell pulverizer operating at a specific power. The ultrathin nanosheets exhibited a significant photothermal conversion efficiency (47.1%) under an 808 nm infrared laser irradiation. In addition, they showed an excellent mass extinction coefficient of 15.7 L g–1 cm–1. By exploiting the intermolecular force between these ultrathin nanosheets and doxorubicin (DOX), a drug loading efficiency of 72.8% was achieved. Through layer-by-layer surface modification of a sulfhydryl-modified polymethacrylic acid (PMAsh) shell and a transferrin (Tf) layer with targeting function, a multifunctional nanomedicine platform (Ti3C2Tx-DOX-PMAsh-Tf) was constructed. Experiments executed in vitro with cells and in vivo to inhibit tumors manifested that Ti3C2Tx is biocompatible. Furthermore, the results showed that the drug release behavior of Ti3C2Tx-DOX-PMAsh-Tf is responsive to glutathione (GSH) stimulation. The synergistic treatment of photothermal therapy and the anticancer drug DOX effectively achieved the inhibition of human hypopharyngeal squamous cell carcinoma.
研究领域:
生物医学工程
·
肿瘤学
·
材料科学
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DOI
PubMed
高影响因子
Journal of Materials Chemistry A
·
2023
·Vol. 11
·期 11
·5830-5840
·
IF 11.9
Xue Zhao,Mengshan Chen,Yingtang Zhou,Haibo Zhang,Guangzhi Hu
The development of water electrolysis hydrogen production technology is related to the process of large-scale application of green energy, but the high cost of Pt based materials with high catalytic activity that have been commercialized has slowed the pace of industrialization in this field owing to inherent scarcity. In this study, the surface modification technology was used to introduce closo-[B12H12]2− with weak reduction ability into a two-dimensional MXene basal plane to realize the in situ evolution of Pt4+ into snowflake like Pt nanoclusters. The reported MXene/B-Pt enables highly efficient catalytic hydrogen evolution reaction (HER) over the full pH range with an overpotential (η10) as low as 20 mV and 14 mV under basic and acidic conditions, respectively. Overall, the HER performance of MXene/B-Pt surpasses that of commercial Pt/C catalysts by about an order of magnitude improvement in mass activity. For MXene/B-Pt, the snowflake-like Pt nanoparticles not only exposed more active sites, but –Ti and –F enhance the adsorption of active H* on Pt, leading to the high HER activity of MXene/B-Pt. In situ SEIIRAS well demonstrates that whether MXenes are loaded with Pt or not has a significant effect on the HER.
研究领域:
材料科学
·
催化化学
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产品关联
DOI
高影响因子
Journal of Energy Storage
·
2024
·
IF 8.9
Hao Chen,Si-Miao Huang,Dong-Ting Zhang,Min-Peng Li,Chen-Yang Li,Yu-Ping Qiu,Xiao-Rui Wang,Tian-Peng Xu,Mao-Cheng Liu
The self-stacking of MXenes-Ti 3 CN limits the accessibility of nanochannels , reduces the ion diffusion kinetics, and hinders its application in alkali metal ion storage field. This study proposes a point-to-point mortise and tenon joining strategy to fabricate a composite structure of 1,4-phenylenediacetic acid-Ti 3 CN (1,4-PDEA-Ti 3 CN) by grafting rigid and flexible 1,4-phenylenediacetic acid (1,4-PDEA) into the amino-functionalized Ti 3 CN interlayers. The rigid and flexible 1,4-PDEA contributes to a pillar effect in the layered structure of Ti 3 CN, which is benefit to prevent the self-stacking and maintain a stable 2D layered structure. As a result, the interlayer spacing of Ti 3 CN is expanded from 1.20 to 1.46 nm and the Na + diffusion coefficient is improved from 1.16 × 10 −6 to 1.99 × 10 −6 cm 2 s −1 after point-to-point 1,4-PDEA grafting. The 1,4-PDEA-Ti 3 CN achieves a reversible discharge specific capacity of 202.3 mAh g −1 at a current density of 0.1 A g −1 after 770 cycles. Even at a high current density of 5 A g −1 , the 1,4-PDEA-Ti 3 CN still possesses a reversible discharge specific capacity of 137 mAh g −1 and it still maintains the high specific capacity of 256.1 mAh g −1 when the current density comes back to 0.1 A g −1 . This point-to-point mortise and tenon joining strategy provides a novel approach for designing other 2D energy storage materials with long cycle stability and high-rate capability.
研究领域:
材料科学
·
电化学储能
·
纳米材料
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能源化学
·
二维材料
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高影响因子
Nanoscale Advances
·
2023
·Vol. 5
·期 21
·5799-5809
·
IF 4.7
Huimin Jia,Quan Liu,Jingjing Si,Yuyang Chen,Guo Zhou,Haihui Lan,Weiwei He
MXenes, two-dimensional nanomaterials, are gaining traction in catalysis and biomedicine. Yet, their oxidation instability poses significant functional constraints. Gaining insight into this oxidation dynamic is pivotal for designing MXenes with tailored functionalities. Herein, we crafted VOxC nanosheets by oxidatively engineering V4C3 MXene. Interestingly, while pristine V4C3 displays pronounced antioxidant behavior, its derived VOxC showcases enhanced peroxidase-like activity, suggesting the crossover between antioxidant and pro-oxidant capability. The mixed valence states and balanced composition of V in VOxC drive the Fenton reaction through multiple pathways to continually generate hydroxyl radicals, which was proposed as the mechanism underlying the peroxidase-like activity. Furthermore, this unique activity rendered VOxC effective in dopamine and glutathione detection. These findings underscore the potential of modulating MXenes' oxidation state to elicit varied catalytic attributes, providing an avenue for the judicious design of MXenes and derivatives for bespoke applications.
研究领域:
材料科学
·
生物医学工程
·
催化化学
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产品关联
DOI
PubMed
高影响因子
ACS Applied Nano Materials
·
2022
·
IF 6.14
Luyao Wang,Zhe Bai,Xiangwen Zhang,Guozhu Li
Hydrodesulfurization (HDS) is an important technique that is widely adopted in the petroleum industry to remove harmful sulfur compounds for environmental protection. MoS2 is the most commonly employed HDS catalyst but tends to stack due to its high surface energy. Active MoS2 nanosheets are anticipated to be well supported for preventing aggregation and increasing accessibility. In the current study, two-dimensional Ti3C2 MXene is utilized as a novel support to controllably anchor MoS2 nanosheets for efficient HDS. The composite of Ti3C2-supported CoMoS2 (CoMoS2/Ti3C2) with a 3D interconnected network was successfully constructed by a facile, one-step hydrothermal method. Detailed characterizations showed that MoS2 nanosheets vertically grew in situ on and between the layers of Ti3C2 MXene. CoMoS2/Ti3C2 possesses a well-defined open structure with a larger specific surface area and a higher proportion of CoMoS active phase compared with unsupported CoMoS2. As catalyzed by CoMoS2/Ti3C2, the reaction rate constant was effectively increased to 2.8 times that on CoMoS2 for the HDS of dibenzothiophene. CoMoS2/Ti3C2 also showed good stability in a harsh high-temperature reaction environment.
研究领域:
材料科学
·
催化化学
·
能源化工
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DOI
高影响因子
SOLID STATE SCIENCES
·
2026
·
IF 3.6
Yurui Zhang,Jiachang Zhang,Han Si,Hengnuo Li,Zhenzhong Hu,Mengmeng Zhen
A TiO 2 (101)/MXenes heterostructure is designed as an artificial protective layer for stable Zn anodes. • Synergy of zincophilic TiO 2 (101) facets and conductive MXenes enables uniform Zn deposition. • The modified anode shows 60.1 mV nucleation overpotential and 3000 h stable cycling. • Full cell delivers long-cycle stability and superior rate performance for aqueous Zn-ion batteries. Aqueous zinc-ion batteries (AZIBs) are promising for large-scale energy storage owing to high safety, low cost, and abundant Zn resources. Nevertheless, the commercialization of AZIBs is still plagued by intractable issues including Zn dendrite growth and hydrogen evolution reaction. Herein, a heterostructured artificial protective layer composed of TiO 2 (101) and MXenes (T(101)/MX) is elaborately designed to stabilize Zn anodes. The heterostructure fully combines the robust zincphilic nature and rapid Zn 2+ diffusion capability of TiO 2 (101) crystal facets with the superior electrical conductivity of MXenes, thereby synergistically regulating Zn nucleation and growth behavior. As a result, the modified T(101)/MX/Zn anode presents an ultralow nucleation overpotential of 60.1 mV and steady cycling over 3000 h at 3.0 mA cm −2 . When assembled with modified V 2 O 5 cathodes, the full battery achieves excellent rate performance and long-term cycling stability with a high specific capacity of 120.41 mAh g −1 at 5.0 A g −1 after 2000 cycles. This study provides a feasible strategy by integrating crystal facet engineering and heterostructure design to develop high-performance artificial protective layers for dendrite-free and long-lifespan Zn anodes, which can promote the practical application of advanced AZIBs. Download: Download high-res image (296KB) Download: Download full-size image
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