Journal of Materials Chemistry A
·
2021
·Vol. 9
·期 32
·17390-17399
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IF 12.732
Tianshi Zhao,Chenguang Liu,Chun Zhao,Wangying Xu,Yina Liu,Ivona Z. Mitrovic,Eng Gee Lim,Li Yang,Ce Zhou Zhao
MXenes are a large class of two-dimensional (2D) materials widely studied recently since they have good water solubility and are able to tune the work function (WF) of materials without changing their electronic characteristics. Based on this, aqueous solution-processed indium-free zinc tin oxide (ZTO) thin-film transistors (TFTs) have been fabricated under an annealing temperature of 300 °C and successfully optimized. This optimization is achieved by fabricating a channel layer into a homojunction structure (MXene doped ZTO/ZTO) to form a two-dimensional electron gas (2DEG). Through doping the specific concentrations of Ti3C2Tx MXenes into the upper layer ZTO thin films, the TFTs exhibit enhanced field-effect mobilities (μFE) of 10.77 cm2 V−1 s−1 and 13.06 cm2 V−1 s−1 as well as a large on/off current ratio of more than 108. Moreover, compared with the undoped double-layer ZTO TFTs, the homojunction devices show better stability, mainly resulting from the transformation in leading conduction mode. Finally, through applying the homojunction channel on the solution-processed aluminum oxide (AlOx) dielectric layer, the μFE exhibits a further enhanced value of 28.35 cm2 V−1 s−1. This is the first report to apply MXenes to the channel layer of TFTs and to fabricate solution-processed ZTO thin films via an aqueous solvent under 300 °C.
研究领域:
材料科学
·
电子工程
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DOI
高影响因子
JOURNAL OF NANOBIOTECHNOLOGY
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2022
·Vol. 20
·期 1
·1-12
·
IF 9.429
Yu Rongjun,Xue Jian,Wang Yang,Qiu Jingfu,Huang Xinyi,Chen Anyi,Xue Jianjiang
In this work, Ti 3 C 2 T x MXene was identified as efficient nanozyme with area-dependent electrocatalytic activity in oxidation of phenolic compounds, which originated from the strong adsorption effect between the phenolic hydroxyl group and the oxygen atom on the surface of Ti 3 C 2 T x MXene flake. On the basis of the novel electrocatalytic activity, Ti 3 C 2 T x MXene was combined with alkaline phosphatase to construct a novel cascading catalytic amplification strategy using 1-naphthyl phosphate (1-NPP) as substrate, thereby realizing efficient electrochemical signal amplification. Taking advantage of the novel cascading catalytic amplification strategy, an electrochemical biosensor was fabricated for BCR/ABL fusion gene detection, which achieved excellent sensitivity with linear range from 0.2 fM to 20 nM and limit of detection down to 0.05 fM. This biosensor provided a promising tool for ultrasensitive fusion gene detection in early diagnosis of chronic myelogenous leukemia and acute lymphocytic leukemia. Moreover, the manageable catalytic activity of MXene broke a path for developing nanozymes, which possessed enormous application potential in not only electrochemical analysis but also the extensive fields including organic synthesis, pollutant disposal and so on. Graphical Abstract
研究领域:
生物医学工程
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纳米材料科学
·
癌症早期诊断
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DOI
PubMed
高影响因子
Advanced Science
·
2022
·Vol. 9
·期 16
·2201118
·
IF 17.521
Minghang Li,Wenjie Zhu,Xin Li,Hailong Xu,Xiaomeng Fan,Hongjing Wu,Fang Ye,Jimei Xue,Xiaoqiang Li,Laifei Cheng,Litong Zhang
Heterogeneous interface design to boost interfacial polarization has become a feasible way to realize high electromagnetic wave absorbing (EMA) performance of dielectric materials. However, interfacial polarization in simple structures such as particles, rods, and flakes is weak and usually plays a secondary role. In order to enhance the interfacial polarization and simultaneously reduce the electronic conductivity to avoid reflection of electromagnetic wave, a more rational geometric structure for dielectric materials is desired. Herein, a Ti 3 C 2 T x /MoS 2 self-rolling rod-based foam is proposed to realize excellent interfacial polarization and achieve high EMA performance at ultralow density. Different surface tensions of Ti 3 C 2 T x and ammonium tetrathiomolybdate are utilized to induce the self-rolling of Ti 3 C 2 T x sheets. The rods with a high aspect ratio not only remarkably improve the polarization loss but also are beneficial to the construction of Ti 3 C 2 T x /MoS 2 foam, leading to enhanced EMA capability. As a result, the effective absorption bandwidth of Ti 3 C 2 T x /MoS 2 foam covers the whole X band (8.2–12.4 GHz) with a density of only 0.009 g cm −3 , at a thickness of 3.3 mm. The advantages of rod structures are verified through simulations in the CST microwave studio. This work inspires the rational geometric design of micro/nanostructures for new-generation EMA materials.
研究领域:
材料科学
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电磁吸收
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纳米材料
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介电性能
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DOI
高影响因子
CERAMICS INTERNATIONAL
·
2017
·
IF 2.986
Xuefeng Zhang,Yong Liu,Shangli Dong,Zhuyu Ye,Yu Guo
A TiO 2 -Ti 3 C 2 T x nanocomposite was prepared using a simple and facile one-step hydrothermal method . The small sized TiO 2 nanoparticles were synthesized and assembled on the surface of Ti 3 C 2 T x nanosheets using Ti 3 C 2 T x itself as titanium source by in-situ technique. The microstructure of TiO 2 -Ti 3 C 2 T x nanocomposite was characterized by means of XRD、FESEM、TEM、XPS and Raman, respectively. The effects of ethanol and hydrothermal holding time on the size of TiO 2 nanoparticles were investigated. The results show that adding proper amount of ethanol into pure water results in decrease of the size of TiO 2 nanoparticles. Under ethanol-water mixed solution, increasing the time of hydrothermal treatment results in growth and even aggregation of TiO 2 nanoparticles. The TiO 2 nanoparticles with average particle size of 30 nm were obtained when the hydrothermal treatment was conducted in ethanol-water mixed solution at 200 ℃ for 12 h.
研究领域:
材料科学
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纳米技术
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产品关联
DOI
高影响因子
CARBON
·
2024
·
IF 10.5
Yawen Zhang,Chengyi Si,Zhongpan Zhang,Le Li,Xiaoqiang Fan,Minhao Zhu
Self-lubricating coating has sparked significant research interest due to its remarkable tribology performance. However, traditional microcapsules-based self-lubricating coating still faces challenges in long-term serviceability and poor anti-corrosion performance. In this paper, a novel self-lubricating epoxy resin coating was proposed based on hierarchical design and energy wear theory. Microcapsules (MC) containing Polyalphaolefin (PAO40) were prepared via the solvent evaporation approach. Ti 3 C 2 T x MXene (T) with high thermal conductivity was then incorporated into the MC-enhanced epoxy resin coating (EP) to construct the novel self-lubricating EP coating (T-MC-EP). Compared to the EP coating, the thermal conductivity of the T-MC-EP coating increased by 79.4%. Finite element analysis indicated that T constructed thermally conductive network in the coating, serving as the main heat carrier. Furthermore, the wear rate decreased by 91.2%, primarily attributed to the formation of lubricating oil film during friction and the reduction of epoxy resin molecular oxidation fracture caused by friction heat. After 31 days of salt spray testing, the T-MC-EP coating also exhibited superior anti-corrosion performance. This work provides an innovative insight into designing multifunctional coating , including excellent mechanical, thermal, tribological, and anti-corrosive performance.
研究领域:
材料科学
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化学工程
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机械工程
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产品关联
DOI
高影响因子
Journal of Materials Chemistry C
·
2019
·Vol. 7
·期 37
·11549-11558
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IF 6.641
Chunli Hou,Huangzhong Yu,Chengwen Huang
MXenes, a newly interesting family of two-dimensional (2D) materials, have recently attracted wide attention owing to their unique photoelectric properties. In this study, 2D Ti3C2Tx, a classic representative of the MXene family, is fabricated and functioned as a hole transport layer (HTL) in polymer solar cells (PSCs) due to its features of outstanding metallic conductivity, excellent optical transparency, suitable work function, and superior mechanical properties. The Ti3C2Tx nanosheets deposited from neutral solutions are incorporated between the photoactive layer and the anode electrode as HTLs to facilitate charge transport and collection characteristics in PSCs. The results show that the Ti3C2Tx film possesses good light transmission and high conductivity. The photovoltaic characteristics of the Ti3C2Tx-based devices are systematically investigated. It is demonstrated that the incorporation of Ti3C2Tx as a HTL endows PSCs with superior charge extraction capability, exhibiting a significantly higher power conversion efficiency (PCE) of 10.53% than that of the only ITO-based device (4.21%) with PBDB-T as the donor and ITIC as the acceptor. Such photovoltaic performance also outperforms that of the state-of-the-art PEDOT:PSS-based devices (10.11%). Furthermore, the Ti3C2Tx-based device also shows better long-term stability under atmospheric conditions without any encapsulation than the PEDOT:PSS devices, which indicates that the 2D Ti3C2Tx material possesses great potential in PSCs.
研究领域:
材料科学
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能源科学
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光伏技术
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DOI
高影响因子
Nanomaterials
·
2024
·Vol. 14
·期 22
·1835
·
IF 4.4
Chong Li,Ran Tao,Jinqiao Hou,Huanming Wang,Chen Fu,Jingting Luo
Ammonia (NH 3 ) gas is prevalent in industrial production as a health hazardous gas. Consequently, it is essential to develop a straightforward, reliable, and stable NH 3 sensor capable of operating at room temperature. This paper presents an innovative approach to modifying SnO 2 colloidal quantum dots (CQDs) on the surface of Ti 3 C 2 T x MXene to form a heterojunction, which introduces a significant number of adsorption sites and enhances the response of the sensor. Zero-dimensional (0D) SnO 2 quantum dots and two-dimensional (2D) Ti 3 C 2 T x MXene were prepared by solvothermal and in situ etching methods, respectively. The impact of the mass ratio between two materials on the performance was assessed. The sensor based on 12 wt% Ti 3 C 2 T x MXene/SnO 2 composites demonstrates excellent performance in terms of sensitivity and response/recovery speed. Upon exposure to 50 ppm NH 3 , the frequency shift in the sensor is −1140 Hz, which is 5.6 times larger than that of pure Ti 3 C 2 T x MXene and 2.8 times higher than that of SnO 2 CQDs. The response/recovery time of the sensor for 10 ppm NH 3 was 36/54 s, respectively. The sensor exhibited a theoretical detection limit of 73 ppb and good repeatability. Furthermore, a stable sensing performance can be maintained after 30 days. The enhanced sensor performance can be attributed to the abundant active sites provided by the accumulation/depletion layer in the Ti 3 C 2 T x /SnO 2 heterojunction, which facilitates the adsorption of oxygen molecules. This work promotes the gas sensing application of MXenes and provides a way to improve gas sensing performance.
研究领域:
材料科学
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传感器
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纳米技术
·
环境监测
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产品关联
DOI
PubMed
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2023
·
IF 8.4
Zhe Liu,Xichao Mo,Shuhao Tian,Jie Chen,Yanpeng Liu,Haiyang Wu,Yawei Zhao,Yanrong Wang,Shanglong Peng
As one of the two-dimensional (2D) nanomaterials , MXene exhibits great potential on gas-sensing owing to its high specific area, rich functional groups and great charge transfer mobility. Herein, electrostatic adsorption and calcination strategies were taken for ZIF-derived Co 3 O 4 and alkalized Ti 3 C 2 T x MXene to fabricate Co 3 O 4 /MX7.5 heterojunction . It can be found that Co 3 O 4 nanoparticles (NPs) uniformly grow on the surface of alkalized Ti 3 C 2 T x . Alkalized Ti 3 C 2 T x with lower work function (lower than 3.9 eV) can transfer more electrons towards Co 3 O 4 and promote the redox of Co 2+ . These increased Co 2+ ions can help to adsorb more adsorbed oxygen and produce more oxygen defects, which enhances contact interaction between ethanol molecules and adsorption sites. The formation of heterojunction between Co 3 O 4 and MXene is observed by UV–vis spectra, and this interface effect enhances the ability of gas sensors. Therefore, the sensors based on the obtained Co 3 O 4 /MX7.5 heterojunction can operate at a relatively low temperature (140 °C) with a response of 3500 % and a low detection limit of 1 ppm. And it also delivers long-term stability (about 30 days). This work demonstrates practical application for detecting ethanol at a relatively low working temperature and keeping their response in a long term.
研究领域:
材料科学
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纳米科技
·
传感器技术
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表面化学
·
功能材料
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DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Xiaoyu Mao,Changhua Li,Xiaofeng Zhang,Hao Chen,Chao Zhang,Rui Gou,Yi He
In this study, we developed a composite material comprising UIO-66-NH 2 encapsulated tannic acid (TA) loaded on Ti 3 C 2 Tx to improve the corrosion resistance of water borne epoxy (WEP) coatings. The successful synthesis of the material was determined by FT-IR, XRD, XPS, EDS, TGA, SEM and TEM characterization. Furthermore, ultraviolet (UV)tests were conducted to evaluate the release rate of TA at varying pH levels, revealing a release rate of approximately 95 % at pH 2. Electrochemical impedance spectroscopy (EIS) results over 60 d indicated that the R c value of TU-T/WEP remained unchanged at 3.934 × 10 8 , demonstrating a two-order magnitude increase compared to those of pure epoxy coatings, attributed to the synergistic active and passive protection of TU-T materials. The self-healing ability of the TU-T/WEP coating was validated through manual scratch experiments. Additionally, the EIS test showed that the R c value of TU-T/WEP coating increased to 3.5 × 10 5 after 72 h, representing a two-order magnitude increase over that of the WEP coating alone. This study introduces a novel approach using green tannic acid as a corrosion inhibitor and amino-functionalized Ti 3 C 2 Tx with UIO-66-NH 2 to enhance corrosion resistance and self-healing aproperties of coatings.
研究领域:
材料科学
·
腐蚀工程
·
表面工程
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产品关联
DOI
PubMed
高影响因子
APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Qiyue Jia,Hongyu Gao,Wenling Du,Jiaxin Bai,Mei Li,Jiansheng Liu,Zhanli Chai
Expediting the separation and transfer of photogenerated carriers is crucial for plasmonic materials to improve the performance of photocatalysts. However, it remains a significant challenge to strengthen the local surface plasma resonance (LSPR) through the modulation of surface functional groups. Herein, Ti 3 C 2 T x MXene is combined with two typical semiconductor materials to form Ti 3 C 2 T x /CdS (TCS) with dominated surface O x groups and Ti 3 C 2 T x /C 3 N 4 (TCN) with surface-terminated F x species. The obtained TCS composite shows a higher photocatalytic performance (96.7 %) than TCN (86.7 %) and the corresponding bare catalysts in the degradation of tetracycline within 60 min under visible-light irradiation. Moreover, the degradation rate of Ti 3 C 2 T x /CdS composite decreases by only 2.3 % after 4 cycles photocatalytic process, which is more stable than Ti 3 C 2 T x /C 3 N 4 (3.3 %) and CdS (39.3 %). The improved photocatalytic activity and stability mainly result from the enhanced LSPR effect of Ti 3 C 2 T x MXene. In particular, the better performance of TCS compared to TCN indicates that the LSPR effect is highly related to the surface-terminated [O]/[F] ratio. These results directly provide a strategy to enhance the electric field dynamics of MXene materials for improving photocatalytic performance.
研究领域:
材料科学
·
环境科学
·
化学
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产品关联
DOI
高影响因子
Advanced Materials Technologies
·
2020
·Vol. 5
·期 8
·2000272
·
IF 5.969
Xingxing Li,Yanan Ma,Peizhi Shen,Chuankun Zhang,Minglei Cao,Shaojun Xiao,Jinfeng Yan,Shijun Luo,Yihua Gao
Ti 3 C 2 T x MXene, as a new 2D material, with unique physical and chemical properties, is ideal for building high performance miniaturized electrochemical energy storage devices. However, the operating voltage window of Ti 3 C 2 T x based microsupercapacitor (MSC) in symmetric structure is very narrow (≤0.6 V), which affects its practical application. Herein, a flexible asymmetric microsupercapacitor (AMSC) based on Ti 3 C 2 T x //polypyrrole (PPy)/MnO 2 is reported, where Ti 3 C 2 T x is deposited on graphite paper (GP) by electrophoresis method as negative electrodes, MnO 2 and PPy are electrochemically deposited on GP successively as positive electrodes, and polyvinyl alcohol/sulfuric acid (PVA/H 2 SO 4 ) as the quasi-solid electrolyte. This AMSC based on Ti 3 C 2 T x //PPy/MnO 2 operates at 1.2 V voltage window, which is two times wider than symmetric Ti 3 C 2 T x based MSC. And its maximum areal capacitance and areal energy density can reach up to 61.5 mF cm −2 and 6.73 µWh cm −2 respectively. Moreover, three above AMSCs in series connection can turn on three lights after being charged. And the AMSC also shows high flexibility under mechanical bending level (bending angle with 0°–180°). The flexible AMSC based on Ti 3 C 2 T x //PPy/MnO 2 with ultrahigh energy density is a promising candidate for exploiting and fabricating next-generation miniature integrated energy storage devices.
研究领域:
材料科学
·
能源存储技术
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DOI
高影响因子
ACS Nano
·
2017
·
IF 13.942
Li Zhao,Biliang Dong,Shaozhou Li,Lijun Zhou,Linfei Lai,Zhiwei Wang,Shulin Zhao,Min Han,Kai Gao,Min Lu,Xiaoji Xie,Bo Chen,Zhengdong Liu,Xiangjing Wang,Hao Zhang,Hai Li,Juqing Liu,Hua Zhang,Xiao Huang,Wei Huang
Two-dimensional (2D) metal–organic framework (MOF) nanosheets have been recently regarded as the model electrocatalysts due to their porous structure, fast mass and ion transfer through the thickness, and large portion of exposed active metal centers. Combining them with electrically conductive 2D nanosheets is anticipated to achieve further improved performance in electrocatalysis. In this work, we in situ hybridized 2D cobalt 1,4-benzenedicarboxylate (CoBDC) with Ti3C2Tx (the MXene phase) nanosheets via an interdiffusion reaction-assisted process. The resulting hybrid material was applied in the oxygen evolution reaction and achieved a current density of 10 mA cm–2 at a potential of 1.64 V vs reversible hydrogen electrode and a Tafel slope of 48.2 mV dec–1 in 0.1 M KOH. These results outperform those obtained by the standard IrO2-based catalyst and are comparable with or even better than those achieved by the previously reported state-of-the-art transition-metal-based catalysts. While the CoBDC layer provided the highly porous structure and large active surface area, the electrically conductive and hydrophilic Ti3C2Tx nanosheets enabled the rapid charge and ion transfer across the well-defined Ti3C2Tx–CoBDC interface and facilitated the access of aqueous electrolyte to the catalytically active CoBDC surfaces. The hybrid nanosheets were further fabricated into an air cathode for a rechargeable zinc–air battery, which was successfully used to power a light-emitting diode. We believe that the in situ hybridization of MXenes and 2D MOFs with interface control will provide more opportunities for their use in energy-based applications.
研究领域:
材料科学
·
电化学
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产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）