JOURNAL OF ALLOYS AND COMPOUNDS
·
2022
·
IF 6.371
Xiaolong Lu,Zhiwei Xu,Yi Shi,Qi Wang,Jialu Jia,Nan Sun,Bijun Fang,Ningyi Yuan,Jianning Ding
Structure engineering gives rise to tremendous opportunities for creating materials with marvelous morphologies and properties. Limited by the unique etching preparation method and vulnerable resistance to oxidation , structure engineering of MXenes, especially, mesoporous morphology construction, remains an obstacle. Here, we put forward a facile strategy to fabricate mesoporous MXene nanosheets by microexplosion process assisted uneven sheets exfoliation and quantum dots detaching, with left structure voids acting as mesopores. The universality of proposed strategy for different MXenes, including Ti 3 C 2 , Nb 2 C and Ti 2 C, was also testified. As a concept of proof, the distinct mesostructures provide abundant active sites and improve ion diffusion kinetics, thus boosting the energy storage performance of Ti 3 C 2 MXenes. This work not only sheds new light to the fabrication of mesoporous MXenes, but also demonstrates performance optimization through structure engineering.
研究领域:
材料科学
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纳米技术
·
能源存储
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DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Lihua Shen,Jiaming Peng,Qili Chen,Yaozhou Zhang,Chunxia Yu,Yuchen Tang,Jin Li,Kunpeng Zhao,Zhifang Zhang
The development of rapid, sensitive ammonia (NH 3 ) sensors is crucial for emergency response as NH 3 poses serious health risks. We report a high-performance chemiresistive sensor based on Ti 3 C 2 MXene@sulfur nanosheet (MXene@S-NSs) composites that addresses the conductivity limitations of pure S-NSs. The composite combines MXene’s excellent conductivity with S-NSs’ semiconductor properties to create room-temperature NH 3 sensors with exceptional performance: 3 ppt detection limit, 375 % response signal, and remarkably fast response/recovery times of 5 s/4s − representing a significant improvement over pure S-NSs sensors. This enhancement arises from optimized charge transport through p-n heterojunctions and sulfur vacancies in the composite structure. The MXene@S-NSs material demonstrates outstanding sensitivity, stability, and response speed, making it particularly suitable for emergency NH 3 monitoring applications. This work not only presents a practical sensor solution but also establishes an effective materials design strategy for developing next-generation gas sensors through rational 2D material hybridization. The successful integration of MXene and S-NSs provides a blueprint for creating advanced sensing materials with tailored electronic properties and performance characteristics.
研究领域:
材料科学
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纳米技术
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气体传感
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环境监测
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应急响应
✓ 已验证
产品关联
DOI
高影响因子
Journal of Energy Storage
·
2023
·
IF 9.4
Weitao Shi,Feifan Hong,Renhuan Li,Ruolin Zhao,Sizhi Ding,Ziqi Liu,Peilin Qing,Yi Fan,Haizhen Liu,Jin Guo,Zhiqiang Lan
MgH 2 is a promising high-capacity solid hydrogen storage material. In this work, MnO 2 -doped Ti 3 C 2 (Ti 3 C 2 @MnO 2 ) was synthesized and used as a catalyst to improve the hydrogen storage performance of MgH 2 . We found that the dehydrogenated 10 wt% Ti 3 C 2 @MnO 2 -doped MgH 2 sample exhibited good hydrogen adsorption ability even at room temperature (30 °C), and could absorb 5.13 wt% of hydrogen in 400 s at 75 °C. The re‑hydrogenated Ti 3 C 2 @MnO 2 -doped MgH 2 sample started to release hydrogen at 182 °C and required 484 s to completely release hydrogen at 275 °C with a dehydrogenation capacity of 6.4 wt%. The Ti 3 C 2 @MnO 2 composite did not change the thermodynamic properties of MgH 2 . In the MgH 2 + Ti 3 C 2 @MnO 2 sample, Ti 3 C 2 , TiO 2 , MnO 2 , MnO, and Mn combined with MgH 2 to form Ti 3 C 2 /MgH 2 , TiO 2 /MgH 2 , MnO 2 /MgH 2 , MnO/MgH 2 , and Mn/MgH 2 multiphase interfaces, which improved the hydrogen storage performance of MgH 2 . The findings of this work may provide a new strategy for preparing novel and efficient catalysts for hydrogen storage applications.
研究领域:
材料科学
·
能源存储
✓ 已验证
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2021
·Vol. 32
·期 24
·28192-28203
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IF 2.478
Qin Yi,Li Xiaohan,Zhao Ting,Zhu Jianfeng,Yang Yanling,Xie Meiqian
Thermoelectric materials convert thermal energy into electricity directly. Constructing nanostructured composite architectures can be an effective strategy to develop thermoelectric performance. SnSe/Ti 3 C 2 composite materials were synthesized through the electrostatic self-assembly method followed by spark plasma sintering. The interfaces introduced by Ti 3 C 2 can scatter carriers effectively, thus increasing the Seebeck coefficients ( S ), finally, a high absolute S value of ~ 296.2 µV K −1 was obtained at 773 K. At the same time, the high-density interfaces of SnSe/Ti 3 C 2 composites enhance the phonon scattering, a low lattice thermal conductivity k lat of 0.54 W m −1 K −1 was obtained. Benefit from the elevated Seebeck coefficient and decreased thermal conductivity, a ZT of 0.1 was obtained at 773 K along the pressing direction, compared with the pure SnSe, the thermoelectric performance improved by 68%. This research will provide a new way for the development of the thermoelectric properties of polycrystalline SnSe.
研究领域:
材料科学
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热电学
·
纳米复合材料
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2020
·
IF 8.758
Jiangping Yu,Junchao Lao,Dandan Chu,Donghong Wang,Ding Tang,Dayong Li,Guoliang Zhu,Anping Dong,Da Shu,Yinghong Peng,Jiayan Luo,Baode Sun
The manipulation of liquid droplets on a specific surface with reversible wettability is of great importance for various applications from science to industry. Herein, the concept of a smart, flexible photodriven droplet motion (PDM) device with programmable wettability is designed using the 2D material of MXene film. Because of the MXene photothermal property, the Vaseline layer in the device is in transition between solid and liquid states under the heat transformation due to light illumination, thus attractively producing a reversible wettability for liquid motion with respect to sliding and pinning. Multifarious pathways for liquid motion could be designed through the flexibility of light illumination, which is a revolutionary enhancement in diverse liquid motion to form the desired pathways. In addition, we demonstrated liquid motion under illumination of the back face, which has a profound influence on applications, such as microfluidic systems, microengines, and liquid manipulation.
研究领域:
材料科学
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纳米技术
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微流控
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表面工程
·
智能器件
✓ 已验证
DOI
高影响因子
ACS Applied Nano Materials
·
2025
·
IF 5.5
Jing Chen,Rong Deng,Lianqin Zhu,Yaqin Shi,Wenli Xue
Ti3C2 QDs with stable blue luminescence at 352 nm were synthesized by using arginine (Arg) as a ligand. Based on the interaction between salicylic acid (SA) and Arg-Ti3C2 QDs, an enhanced ratio fluorescence sensor was constructed for fluorescence detection of SA. When SA was added to the system, fluorescence through the internal filtration effect (IFE) of Arg-Ti3C2 QDs at 352 nm was gradually weakened, while the interaction between SA and Arg-Ti3C2 QDs through hydrogen led to the appearance and significant enhancement of fluorescence at 403.9 nm, leading to ratio fluorescence. The system has a good detection limit (LOD) of 0.57 μM and excellent selectivity. And it can be applied to the detection of SA in the essence of actual samples, which can effectively prevent harm to the human body caused by adding too much SA in cosmetics.
研究领域:
分析化学
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材料科学
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生物医学
✓ 已验证
产品关联
DOI
高影响因子
ACS Nano
·
2018
·
IF 13.709
Junchao Lao,Ruijing Lv,Jun Gao,Aoxuan Wang,Jinsong Wu,Jiayan Luo
High, stable, and modulatable ionic conductivity is important for many nanofluidic applications of layered two-dimensional (2D) membranes. In this study, we demonstrate a proton and ionic conductivity of the Ti3C2Tx membrane that is orders of magnitude higher than that of bulk solution at low concentrations. Importantly, the membrane is highly stable in aqueous solution without any modification, due to the strong and attractive interlayer van der Waals interaction and weak electrostatic repulsive interaction. Furthermore, by exploiting the intrinsic photothermal property of MXene, we demonstrate that the ionic conductivity can be reversely, rapidly, and completely switched on or off with laser light. This study should prove MXene membrane as a suitable platform to study and utilize nanofluidic ion transport. It should also inspire future studies to manipulate the mass transport through 2D membranes using their inherent physicochemical properties.
研究领域:
纳米流体力学
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材料科学
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膜技术
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能量转换
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智能响应材料
✓ 已验证
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2023
·Vol. 58
·期 12
·5319-5333
·
IF 4.5
Wang Yun,Tan Hongjie,Sang Lexian,Xie Yunying,Jia Fuchao,Zhou Tong,Yin Guangchao,Sun Fazhe,Wang Xiaomei
An optimized acetone gas sensor based on Ti 3 C 2 / α -Fe 2 O 3 (TF) composite materials was synthesized using microwave and etching methods. The structures, morphology and composition of the TF composites were characterized via XRD, XPS, SEM and TEM. The crystal of α -Fe 2 O 3 porous nanorods is hexagonal, and the α -Fe 2 O 3 nanoclusters formed from α -Fe 2 O 3 nanorods were adhered adequately on the lamellar Ti 3 C 2 MXene in the TF composite. The specific surface area and surface defects of the TF composites increased compared with pure α -Fe 2 O 3 nanocluster material, thus exposing a large number of gas adsorption sites. Furthermore, the excellent electrical conductivity and high free charges transfer ability of Ti 3 C 2 MXene provided more electrons for the gas-sensitive reaction and enhanced the transmission capacity of gas-sensitive reaction electrical signal, respectively. The Schottky barriers were formed at the interface of α -Fe 2 O 3 and Ti 3 C 2 MXene increasing the resistance of TF gas sensor in air, which is beneficial to the response of TF gas sensor. So, the gas-sensitive performance of TF gas sensor to acetone was greatly improved. The response of TF gas sensor to 100 ppm acetone was up to 23.38, which was nearly 2.3 times higher than pure α -Fe 2 O 3 gas sensor. The lower detection limit of TF gas sensor could be as low as 1 ppm. In addition, the TF gas sensor had excellent selectivity, long-term repeatability and stability for acetone.
✓ 已验证
产品关联
DOI
高影响因子
Catalysis Science & Technology
·
2018
·Vol. 9
·期 2
·310-315
·
IF 5.365
Yuliang Sun,Yuan Sun,Xing Meng,Yu Gao,Yohan Dall'Agnese,Gang Chen,Chunxiang Dall'Agnese,Xiao-Feng Wang
Ti3C2, though one of the most extensively studied 2D MXenes, is rarely reported in dye-sensitized photocatalysis. Platinum is commonly used as a co-catalyst in photocatalytic hydrogen evolution but it increases the cost and hence restricts the commercialization of this technology. Eosin Y (EY) is widely studied in dye-sensitized systems as it is not only low-cost and easily commercially available, but also exhibits excellent visible light absorption ability. Herein, we oxidized Ti3C2 MXene in water at 60 °C for different times, to form TiO2/Ti3C2 on amorphous carbon (AC) composites. The oxidized MXene was used as a photocatalyst in a dye-sensitized system for hydrogen evolution to replace noble metal co-catalysts such as Pt. The highest hydrogen production rate of 33.4 μmol h−1 g−1 was achieved by the TiO2/Ti3C2@AC-48h composite with the sensitization of 1 mM EY, which was 110 times higher than that of oxidized Ti3C2 without EY. This work shows the potential of 2D MXenes used in dye-sensitized photocatalysis for hydrogen evolution.
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2019
·
IF 4.084
Yanping Fan,Dandan Chen,Xianyun Liu,Guangxin Fan,Baozhong Liu
Two-dimensional layered material of Ti 3 C 2 has been used to improve the hydrogen desorption properties of LiBH 4 . The results of temperature-programmed dehydrogenation (TPD) and isotherm dehydrogenation (TD) demonstrate that adding the Ti 3 C 2 contributes to the hydrogen storage performance of LiBH 4 . The dehydrogenation temperature decreases and the dehydrogenation rate increases with increasing the adding amounts of Ti 3 C 2 . The onset dehydrogenation temperature of LiBH 4 + 40 wt% Ti 3 C 2 composite is 120 °C and approximately 5.37 wt% hydrogen is liberated within 1 h at 350 °C. Furthermore, the activation energy of LiBH 4 + wt.% Ti 3 C 2 is also greatly reduced to 70.3 kJ/mol, much lower than that of pure LiBH 4 . The remarkable dehydrogenation property of the LiBH 4 + 40 wt% Ti 3 C 2 may be due to the layered active Ti-containing Ti 3 C 2 and the high surface area of MXene .
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产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2022
·Vol. 57
·期 42
·19957-19971
·
IF 4.682
Zhu Beibei,Song Pingan,Li Jingguo,Cao Shaokui,Shi Jun
Photodynamic therapy as an antibiotic-free method could effectively solve the bacterial infection problem and avoid the emergence of multidrug-resistant bacteria. In this paper, Ti 3 C 2 @gold nanorods (GNRs)/PDA nanoparticles with synergistic photodynamic antibacterial properties were obtained by coating PDA on the surface of in situ growth Ti 3 C 2 @GNRs. GNRs growing on the surface of Ti 3 C 2 MXene nanosheets effectively prevented the aggregation of Ti 3 C 2 nanosheets, which ensured the distinct photodynamic antibacterial performance of Ti 3 C 2 . In addition, the introduction of SH-PEG-CH 3 to Ti 3 C 2 @GNRs nanosheets endowed Ti 3 C 2 @GNRs/PDA nanoparticles with good biocompatibility. Furthermore, Ti 3 C 2 @GNRs/PDA nanoparticles possessed synergistically enhanced photodynamic properties, caused by the remarkable photodynamic properties of Ti 3 C 2 MXene and PDA. In addition, with the increase in PDA content, Ti 3 C 2 @GNRs/PDA nanoparticles could produce more 1 O 2 under 660 nm laser irradiation and the minimum inhibitory concentrations of Ti 3 C 2 @GNRs/PDA 50 nanoparticles against E. coli and S. aureus decreased to about 0.07 mg/mL. Thus, this work utilizes the 1 O 2 -generating performance of Ti 3 C 2 MXene and PDA to fabricate Ti 3 C 2 @GNRs/PDA nanoparticles with synergistically enhanced photodynamic antibacterial activities, which is expected to be applied in antibiotic-free antibacterial field. Graphical abstract
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产品关联
DOI
高影响因子
MICROCHEMICAL JOURNAL
·
2022
·
IF 5.304
Xiaojiao Du,Jun Sun,Yan Li,Wenhan Du,Ding Jiang
A highly sensitive electrochemiluminescence (ECL) aptasensor for lincomycin (Lin) detection was designed based on a novel self-accelerated ECL luminophore of Ag 3 PO 4 -Ti 3 C 2 nanohybrids. The Ag 3 PO 4 -Ti 3 C 2 nanohybrids demonstrated prominent ECL performances with K 2 S 2 O 8 as co-reactant, and the Ti 3 C 2 as co-reaction accelerator, which catalyzes K 2 S 2 O 8 into more active radicals and inducing a tremendous amount of excited-state luminophores. Besides, it can be used for loading aptamer molecules owing to its large surface area. Given these attributes, a self-accelerated ECL aptasensor for Lin detection was constructed based on the effect of target induced aptamer dissociating. Under optimized conditions, the ECL aptasensor exhibited wide linear relationship of 1.0 × 10 −4 nmol/L to 1.0 × 10 2 nmol/L, low detection limit of 6.17 × 10 −5 nmol/L (S/N = 3) and good stability and reproducibility for Lin detection. The aptasensor was successfully applied for the Lin detection in milk and water samples, implying immense potential in real applications.
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产品关联
DOI
高影响因子
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