CERAMICS INTERNATIONAL
·
2022
·
IF 5.532
Pingan Song,Weiying Wang,Jingguo Li,Shaokui Cao,Jun Shi
Ti 3 C 2 MXene/gold nanorods (Ti 3 C 2 @AuNRs) nanosheets , a novel sandwich-like nanohybrids , have attracted extensive attention in the biomedical field due to its synergistically enhanced near-infrared (NIR) responsiveness and strong absorption in NIR region. In this study, hydroxyapatite (HAP) was self-assembled in situ around Ti 3 C 2 @AuNRs core and then combined with polydopamine (PDA) to prepare NIR-/pH- dual responsive Ti 3 C 2 @AuNRs/HAP/PDA nanocomposites. The obtained Ti 3 C 2 @AuNRs/HAP/PDA nanocomposites exhibited prominent photothermal conversion efficiency (38.6%) due to the synergistically enhanced NIR-responsive of Ti 3 C 2 @AuNRs. Ti 3 C 2 @AuNRs/HAP/PDA nanocomposites displayed excellent drug loading capacity (88.3%) for antitumor drug doxorubicin hydrochloride (DOX) because of the electrostatic interaction of negatively charged HAP nanorods and positively charged DOX, along with the distinct adhesiveness of PDA. In addition, the disintegration of HAP under acid medium and the strong NIR absorption of Ti 3 C 2 @AuNRs endowed the Ti 3 C 2 @AuNRs/HAP/PDA nanocomposites with pH-/NIR-dual responsive drug release behavior. In this paper, a feasible method is presented to prepare Ti 3 C 2 -based drug carriers with high drug loading capacity and remarkable multi-responsive drug release properties, which holds great promise in the field of remote controlled drug delivery and photothermal therapy.
研究领域:
生物医学工程
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纳米医学
·
材料科学
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Liwen Tan,Chuanliang Wei,Yuchan Zhang,Yongling An,Shenglin Xiong,Jinkui Feng
As a promising candidate of safety, low-cost and eco-friendliness, Zn metal batteries still suffer from poor stability and irreversibility, which attribute to dendrite growth and accompanied side reactions. To enable highly reversible Zn anode, a flexible and self-assembled biomass engineered MXene film, functioning as an artificial protective interface, is firmly adhered on the Zn foil surface by facile blade-casting. This amine-rich ultrathin protective film not only effectively protects fresh Zn against water corrosion, but also promotes Zn nucleation and triggers homogeneous Zn plating/stripping underneath the film attributing to its excellent adhesion, flexibility, hydrophilicity and strong coordination of amine groups to Zn 2+ . Meanwhile, the conductive MXene component can terminate the accidental Zn dendrites by ionizing the contacted Zn and dispersing the tip electric field. Consequently, the protected Zn electrode delivers prolonged cycling life and improved coulombic efficiency, which also conduces to improving the full cell performance when it is matched with MnO 2 cathodes. This work brings a new insight into the practical design of highly reversible Zn metal anodes.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
DOI
高影响因子
Small
·
2022
·Vol. 18
·期 27
·2202203
·
IF 15.153
Ke Lv,Jizhen Zhang,Xu Zhao,Na Kong,Jinlong Tao,Ji Zhou
Wearable electronics demand energy storage devices with high energy density and fast charging-discharging rates. Although various porous electrodes have been constructed, the effect of pore size on the capacitive performance of 2D nanomaterials has been rarely studied. Herein, flexible MXene foams with significantly different pore structures are fabricated using varying diameter polystyrene (PS) spheres (80, 310, and 570 nm), which shows uniform pores and interconnected pores providing enough active sites and a good electrical connection for electron transfer. Noteworthy, when MXene flakes and templates (310 nm) have a similar size, the foam delivers the highest gravimetric capacitance of 474 ± 12 F g −1 at 2 mV s −1 than others. Additionally, the mass ratio between MXene and PS controls the packing density of foams influencing the inner resistance of foam electrodes. A carbon nanotube is introduced to further improve the electrical conductivity of foams to achieve a capacitance of 462 ± 8 F g −1 at 2 mV s −1 and retains 205 ± 10 F g −1 at 1000 mV s −1 , demonstrating promises in energy storage applications and providing an insightful guidance for designing 2D nanomaterials-based porous electrodes for supercapacitors.
研究领域:
材料科学
·
电化学
·
纳米技术
·
能量存储
✓ 已验证
DOI
高影响因子
Journal of Science-Advanced Materials and Devices
·
2025
·Vol. 11
·期 1
·101095
·
IF 6.8
Jianlei Chen,Tianruo Zhang,Yun Zhou,Yong Xu
In this study, a highly sensitive electrochemical sensor was developed for the detection of nitrofurazone (NFZ) in seawater using a glassy carbon electrode modified with a nanocomposite of MXene and graphene (Gr). The synergistic effect of MXene and Gr significantly enhanced the electron transfer rate and active surface area of the electrode. Key parameters, including modifier volume, activation cycles, and solution pH, were optimized to achieve optimal sensor performance. Under the optimized conditions, the sensor exhibited a wide linear detection range from 1 to 70 μmol/L. The sensor also demonstrated excellent repeatability, stability, and selectivity against common antibiotic interferents. When applied to spiked seawater samples, recovery rates ranged from 96.01 % to 102.16 % with a relative standard deviation below 1.3 %. The MXene–Gr-based sensor not only provides a reliable tool for on-site monitoring of antibiotic residues in marine environments but also demonstrates the great potential of MXene-based composites in the development of advanced electrochemical biosensing platforms for environmental and food safety applications.
研究领域:
环境分析化学
·
电化学传感
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食品安全检测
·
海洋环境污染监测
·
纳米材料应用
✓ 已验证
产品关联
DOI
高影响因子
Nature Communications
·
2020
·Vol. 11
·期 1
·1-9
·
IF 12.121
Gao Xiang,Du Xuan,Mathis Tyler S.,Zhang Mengmeng,Wang Xuehang,Shui Jianglan,Gogotsi Yury,Xu Ming
Improving the accessibility of ions in the electrodes of electrochemical energy storage devices is vital for charge storage and rate performance. In particular, the kinetics of ion transport in organic electrolytes is slow, especially at low operating temperatures. Herein, we report a new type of MXene-carbon nanotube (CNT) composite electrode that maximizes ion accessibility resulting in exceptional rate performance at low temperatures. The improved ion transport at low temperatures is made possible by breaking the conventional horizontal alignment of the two-dimensional layers of the MXene Ti 3 C 2 by using specially designed knotted CNTs. The large, knot-like structures in the knotted CNTs prevent the usual restacking of the Ti 3 C 2 flakes and create fast ion transport pathways. The MXene-knotted CNT composite electrodes achieve high capacitance (up to 130 F g −1 (276 F cm −3 )) in organic electrolytes with high capacitance retention over a wide scan rate range of 10 mV s −1 to 10 V s −1 . This study is also the first report utilizing MXene-based supercapacitors at low temperatures (down to −60 °C).
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
DOI
高影响因子
Fundamental Research
·
2022
·
IF 0
Yuanyuan Zhu,Shuanghao Zheng,Jieqiong Qin,Jiaxin Ma,Pratteek Das,Feng Zhou,Zhong-Shuai Wu
Two-dimensional MXenes are key high-capacitance electrode materials for micro-supercapacitors (MSCs) catering to integrated microsystems. However, the narrow electrochemical voltage windows of conventional aqueous electrolytes (≤ 1.23 V) and symmetric MXene MSCs (typically ≤ 0.6 V) substantially limit their output voltage and energy density. Highly concentrated aqueous electrolytes exhibit lower water molecule activity, which inhibits water splitting and consequently widens the operating voltage window. Herein, we report ultrahigh-voltage aqueous planar asymmetric MSCs (AMSCs) based on a highly concentrated LiCl-gel quasi-solid-state electrolyte with MXene (Ti 3 C 2 T x ) as the negative electrode and MnO 2 nanosheets as the positive electrode (MXene//MnO 2 -AMSCs). The MXene//MnO 2 -AMSCs exhibit a high voltage of up to 2.4 V, attaining an ultrahigh volumetric energy density of 53 mWh cm −3 . Furthermore, the in-plane geometry and the quasi-solid-state electrolyte enabled excellent mechanical flexibility and performance uniformity in the serially/parallel connected packs of our AMSCs. Notably, the MXene//MnO 2 -AMSC-based integrated microsystem, in conjunction with solar cells and consumer electronics, could efficiently realize simultaneous energy harvesting, storage, and conversion. The findings of this study provide insights for constructing high-voltage aqueous MXene-based AMSCs as safe and self-sufficient micropower sources in smart integrated microsystems.
研究领域:
材料科学
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能源存储
·
纳米技术
✓ 已验证
DOI
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2022
·
IF 9.965
Ze Zong,Penggang Ren,Zhengzheng Guo,Jin Wang,Zhengyan Chen,Yanling Jin,Fang Ren
The development of electromagnetic interference (EMI) shielding materials with excellent absorption coefficient (A) is vital to completely eliminate the pollution of the ever-increasing electromagnetic waves (EMWs). In this regard, a TiC/carbon hybrid aerogel , derived from MXene/cellulose aerogel, was successfully fabricated via freeze-drying and subsequent pyrolysis process . Profiting from the open, loose three-dimensional (3D) macro pores with sheet-like morphology and high porosity, as well as the rich heterogeneous interfaces between TiC and cellulose-derived carbon, the as-prepared hybrid carbon aerogel achieves ultra-efficient EMI shielding effectiveness of 72.9 dB in conjunction with a superior A value of 0.76 and low thermal conductivity . These properties endow the as-prepared aerogel with strong absorption-dominant ultra-efficient EMI shielding and thermal insulation performance to meet the complex practical requirements. This work provides a promising strategy for achieving ultra-efficient multifunctional EMI shielding performance and superior A simultaneously.
研究领域:
材料科学
·
电子工程
✓ 已验证
DOI
PubMed
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.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
DOI
高影响因子
OPTICS AND LASER TECHNOLOGY
·
2025
·
IF 5
Jun Dong,Yixuan Hou,Wei Gao,Chengyun Zhang,Lipeng Zhu,Yongkai Wang,Qingyan Han,Jianxia Qi
Surface-Enhanced Raman Scattering (SERS), with the exceptional single-molecule detection capability and high sensitivity, has become an advanced spectroscopic analysis method in fields such as chemical analysis and biosensing. Three-dimensional (3D) sandwich substrates, due to their unique structural characteristics, have attracted considerable attention for their ability to enhance SERS detection sensitivity. However, the controlled assembly of 3D sandwich substrates with bimetallic nanoparticles remains a challenge. In this paper, a fabrication method for constructing 3D sandwich substrates via a bottom-up approach is proposed. Using a liquid–liquid phase self-assembly method, Au@Ag nanocubes (Au@Ag NCs) were assembled on a polystyrene (PS) microsphere array with monolayer MXene (Ti 3 C 2 T X ) adsorption, successfully constructed an Au@Ag NCs/MXene/PS microsphere substrate. Furthermore, the SERS sensitivity of the substrate was evaluated using Rhodamine 6G (R6G), Crystal Violet (CV), and Aspartame (APM) molecules, and experimental results show that the detection limits are 10 −12 M, 10 −11 M, and 0.0313 g/L (1.06 × 10 −4 M), respectively, with excellent uniformity and stability of the substrate. These findings demonstrate that the constructed 3D substrate exhibits outstanding SERS performance and holds significant potential for applications in environmental pollutant detection and food safety.
研究领域:
分析化学
·
纳米生物技术
·
环境监测
·
食品安全
·
光谱学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2020
·
IF 8.758
Chuxin Lei,Yongzheng Zhang,Dingyao Liu,Kai Wu,Qiang Fu
Polymer-based electromagnetic interference (EMI) shielding materials possess many irreplaceable advantages than metals, such as superior flexibility, easy processing, and low density. However, impeded by their limited mechanical properties, inferior temperature resistance and unsatisfactory electrical conductivity, it is still challenging to extend their shielding applications under some extreme conditions, i.e., <−50 or >200 °C. Herein, we report an ultrathin, highly robust, superflexible, and temperature-stable film via engineering a worm-like aramid nanofiber (ANF) into the rod-like microscopic configuration, followed with self-assembly with Ti3C2Tx (MXene) into a hierarchical brick-and-mortar architecture. With stiff and symmetric aromatic rings fully straightened and well packed into a crystalline form in the backbone, this rod-like ANF enables an augmented network with effective energy dissipation, resulting in the metal-like mechanical properties, i.e., unprecedented tensile strength (300.5 MPa), high Young’s modulus (13.6 GPa), and excellent folding endurance (>10 000 times). More significantly, this MXene/ANF composite film with outstanding specific EMI shielding effectiveness (8814.5 dB cm2 g–1) and flame retardancy performs a broad range of operations in the temperature range from −100 °C (355 MPa) to 300 °C (136 MPa), in which >99% electromagnetic waves could be eliminated; this promises its potential EMI shielding applications even in some extreme conditions.
研究领域:
材料科学
·
纳米技术
✓ 已验证
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2020
·
IF 8.758
Yuantao Yan,Xiaoli Zhao,Huanglin Dou,Jingjiang Wei,Zhihua Sun,Yu-Shi He,Qiang Dong,Haisong Xu,Xiaowei Yang
Silicon-based materials are the desirable anodes for next-generation lithium-ion batteries; however, the large volume change of Si during the charging/discharging process causes electrode fracture and an unstable solid–electrolyte interphase (SEI) layer, which severely impair their stability and Coulombic efficiency. Herein, a bundle of silicon nanoparticles is encapsulated in robust micrometer-sized MXene frameworks, in which the MXene nanosheets are precrumpled by capillary compression force to effectively buffer the stress induced by the volume change, and the abundant covalent bonds (Ti–O–Ti) between adjacent nanosheets formed through a facile thermal self-cross-linking reaction further guarantee the robustness of the MXene architecture. Both factors stabilize the electrode structure. Moreover, the abundant fluorine terminations on MXene nanosheets contribute to an in situ formation of a highly compact, durable, and mechanically robust LiF-rich SEI layer outside the frameworks upon cycling, which not only shuts down the parasitic reaction between Si and an organic electrolyte but also enhances the structural stability of MXene frameworks. Benefiting from these merits, the as-prepared anodes deliver a high specific capacity of 1797 mA h g–1 at 0.2 A g–1 and a high capacity retention of 86.7% after 500 cycles at 2 A g–1 with an average Coulombic efficiency of 99.6%. Significantly, this work paves the way for other high-capacity electrode materials with a strong volume effect.
研究领域:
材料科学
·
电化学
·
纳米能源
·
锂离子电池
·
功能材料
·
界面化学
✓ 已验证
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2023
·
IF 6.2
Lanlan Yu,Ningning Liu,Baojun Liu,Fei Yu,Jie Ma
Cathode materials with high capacity and cyclic durability are urgently needed for capacitive deionization . Na 3 V 2 (PO 4 ) 3 is an emerging pseudocapacitive candidate for this process on account of its high capacity and Na + reversible insertion, while it suffers from the intrinsic low electrical conductivity and small electrolyte-accessible surface area. Herein, a sea urchin-like Na 3 V 2 (PO 4 ) 3 @carbon (NVP@C) compound material was synthesized from MXene-V 2 C via hydrothermal method followed by annealing treatment, and then assembled as capacitive deionization (CDI) electrode material . Benefiting from three-dimensional sea urchin-like structure, where the nanoneedles of NVP@C serve as fast transport channel for Na + , NVP@C performed high specific capacity (437 F g −1 at 5 mV s −1 ) and fast ionic diffusion kinetics. Moreover, the NVP@C showed attractive desalination performance as cathode material for CDI, achieving a remarkable adsorption capacity of 74.0 mg g −1 in a NaCl salt solution (1000 mg L −1 ) and long life cycle stability. The present work provides a novel perspective to construct practical redox-active and stable CDI electrode with 3D structure from MXene for highly capacitive and durable desalination application .
研究领域:
材料科学
·
电化学
·
环境工程
·
能源存储
·
纳米材料
·
水处理技术
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）