MICROCHEMICAL JOURNAL
·
2025
·
IF 5.1
Zhihua Zhao,Jingzhao Tian,Xiaobei Xu,Chunhua Zheng,Lan Wu
Elevated concentrations of nitrogen dioxide (NO 2 ) pose detrimental effects on the environment, contributing to pollution in water bodies, soil, and the atmosphere. Moreover, NO 2 , being a potent oxidant, can directly impinge upon the respiratory system, precipitating a range of pulmonary illnesses. Consequently, rigorous surveillance and assessment of NO 2 emissions are of paramount importance for safeguarding environmental integrity and public health. To address this challenge, we fabricated a NO 2 gas sensor using VS 2 /Ti 3 C 2 T x /TiO 2 nanocomposites. The sensors were thoroughly characterized using X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), and energy-dispersive X-ray spectroscopy (EDS). In our tests, the M/v-2 sensor showed excellent performance, with a response of 4.73 at 180 °C to 50 ppm NO 2 , which is 2.5 times that of the Ti 3 C 2 T x /TiO 2 sensor. Additionally, its response time was short (26 s), the recovery time was even shorter than the response time (15 s), and it demonstrated a high response speed to low concentrations of NO 2 (≤10 ppm). Furthermore, the long-term stability was excellent over a period of 45 days. The gathered characteristics indicate that our VS 2 /Ti 3 C 2 T x /TiO 2 gas sensor has great potential for NO 2 detection.
研究领域:
环境科学
·
材料科学
·
传感器技术
✓ 已验证
产品关联
DOI
高影响因子
Journal of Semiconductors
·
2023
·Vol. 44
·期 11
·112701
·
IF 5.1
Liang Wu,Peng Wang,Xingwu Zhai,Hang Wang,Wenqi Zhan,Xinfeng Tang,Qianwen Li,Min Zhou
Metallic few-layered 1T phase vanadium disulfide nanosheets have been employed for boosting sodium ion batteries. It can deliver a capacity of 241 mAhg−1 at 100 mAg−1 after 200 cycles. Such long-term stability is attributed to the facile ion diffusion and electron transport resulting from the well-designed two-dimensional (2D) electron-electron correlations among V atoms in the 1T phase and optimized in-planar electric transport. Our results highlight the phase engineering into electrode design for energy storage.
研究领域:
材料科学
·
能源存储
✓ 已验证
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2024
·
IF 8.1
Jing Li,Zhengguang Shi,Markas Law,Zhaoyu Chen,Qianru Lin,Yaohui Zhang,Mingxue Huo,You Wang,Cheng-Te Lin,Palani Balaya,Hsu-Sheng Tsai
VS 2 is a potential anode material for lithium-ion batteries (LIBs) due to its advantageous properties. Herein, a novel three-dimensional (3D) VS 2 /reduced graphene oxide (rGO) heterostructure (VS 2 -rGO) was fabricated by in-situ assembly of caterpillar-like VS 2 nanosheets on rGO. This 3D VS 2 -rGO with a well-defined heterojunction interface is engineered to mitigate the volumetric expansion of VS 2 during Li + intercalation/deintercalation cycles. This optimized design promotes enhanced conductivity across the heterojunction, facilitating efficient electron and ion transport. The VS 2 -rGO electrode shows higher reversible capacity and better rate performance (644.02 mA h g −1 at 0.1 A g −1 after 140 cycles, 526.66 mA h g −1 at 2 A g −1 ) as compared to the pure VS 2 electrode (433.69 mA h g −1 at 0.1 A g −1 after 140 cycles, 63.91 mA h g −1 at 2 A g −1 ). Ex-situ XRD analysis suggests that the Li + storage mechanism in the VS 2 -rGO electrode involves the initial intercalation, followed by intercalation and conversion. The lower Li + diffusion barrier within the VS 2 -rGO heterojunction (0.183 eV) compared to the VS 2 layers (0.225 eV), as predicted by first-principles calculations, resulting the enhanced Li + transport kinetics and improved cycling performance of the VS 2 -rGO electrode material. This work offers novel perspectives for the influence of heterojunctions on LIBs.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2018
·
IF 6.945
Wenbin Li,Jianfeng Huang,Liangliang Feng,Liyun Cao,Yijun Liu,Limin Pan
Construction of well-defined three-dimensional (3D) assembled architectures is an effective strategy to improve the electrochemical reaction kinetics of sodium-ion storage. Herein, 3D hierarchical VS 2 microrods assembled by nanosheets comprised of small VS 2 nano-grains are controllably synthesized by a facile in-situ chemical etching approach. Results show that the addition amount of ethanol serving as the etching agent has a great influence on the oriented growth and size (thickness-to-diameter ratio) of VS 2 nano-grains. Moreover, (001)-oriented VS 2 nano-grains with larger thickness-to-diameter ratio expose more layer-edges and unsaturated S-edges, and then dramatically improve the intercalation kinetic, eventually leading to the enhancement of rate performance and cycling capacity. When applied as anode for sodium ion batteries, this material affords a high capacity of 255 and 230 mAhg −1 even at a high rate of 1.0 and 2.0 A g −1 , and a reversible capacity of 350 mAhg −1 is still achieved after the following cycling test of 200 cycles at 0.2 A g −1 . The controllability and simplicity of the in-situ chemical etching approach, combined with the superior sodium storage properties present a promising strategy for the development of versatile synthesis techniques for energy storage applications .
研究领域:
材料科学
·
能源存储
✓ 已验证
DOI
高影响因子
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
·
2018
·Vol. 20
·期 35
·22563-22568
·
IF 3.906
Lu Wu,Ruimin Sun,Fangyu Xiong,Cunyuan Pei,Kang Han,Chen Peng,Yuqi Fan,Wei Yang,Qinyou An,Liqiang Mai
As a typical member of transition-metal dichalcogenides (TMDs), VS2 has been evaluated as the aluminum-ion battery cathode for the first time. To further improve their stability and conductivity, the as-prepared VS2 nanosheets are modified with graphene (denoted as G-VS2). And the G-VS2 electrode delivers a high initial discharge capacity of 186 mA h g−1 at 100 mA g−1 with almost 100% coulombic efficiency after 50 cycles. Furthermore, an explicit intercalation mechanism of Al into G-VS2 has been investigated by in/ex situ XRD, ex situ Raman and TEM spectroscopy. And the G-VS2 composite proves to be an impressive cathode material for aluminum-ion batteries (AIBs). This work might put forward the application of TMDs in AIBs.
研究领域:
材料科学
·
电化学
·
纳米科技
·
能源存储
·
无机化学
·
固体物理
✓ 已验证
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2014
·Vol. 39
·期 3
·1892-1898
·
IF 3.159
Xuehua Yin,Jin Cai,Hongyan Feng,Zeming Wu,Jianmei Zou,Qingyun Cai
A novel ultrasensitive sensing system for rapid fluorescence detection of cytochrome c (cyt c) was proposed by combining aptamer-based bioassay with VS2 nanosheets. VS2 nanosheets with high fluorescence quenching ability were synthesized by the solution route. A cyt c-binding aptamer was tagged with the fluorescent dye carboxy fluorescein (FAM), acting as the probe. VS2 nanosheets can adsorb the probe and quench its fluorescence efficiently. However, the fluorescence of the probe was retained when it was incubated with cyt c and then mixed with VS2 nanosheet solution. The proposed sensing system shows high selectivity and sensitivity, giving a linear range of 0.75 nM to 50 μM, and a limit of detection of 0.50 nM.
研究领域:
纳米技术
·
生物传感器
·
分析化学
·
生物分析化学
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry A
·
2022
·Vol. 10
·期 44
·23531-23541
·
IF 14.511
Fei Yu,Zhengqu Yang,Xiaochen Zhang,Peiyu Yang,Liqing Li,Jie Ma
MXenes have promising applications in capacitive deionization (CDI) due to their excellent electrical conductivity, tunable layer structure and hydrophilic surface. However, the electrochemical performance and water stability of MXenes would be limited by the large number of terminations on their surface. In this work, we obtained VS2/V2CTx nanocomposites by in situ partial derivatization of MXene to enhance electrochemical performance and slow down its own oxidation, and the resulting material was used as a cathode for CDI desalination. The TOPSIS-Entropy weight model was first used to achieve multi-objective optimization, realizing a salt adsorption capacity of 166.83 mg g−1, a salt removal rate of 3.67 mg g−1 min−1 and an energy consumption of only 0.256 kW h kg−1-NaCl. It also showed good stability over 60 CDI cycles. The fast salt removal rate and high desalination capacity of VS2/V2CTx can be explained by the synergy between the pseudocapacitive and battery behaviors of the VS2/V2CTx hybrid material. In situ electrochemical analysis based on electrochemical quartz crystal microbalance (EQCM) demonstrated that the desalination process is reversible and that the deionization mechanism is a combination of faradaic reaction (removal of Na+·4H2O) and intercalation pseudocapacitance (removal of desolvated Na+). This work shows that VS2/V2CTx, as a partially derived MXene material, provides a new solution to improve the stability and electrochemical properties of MXenes.
研究领域:
材料科学
·
环境工程
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2018
·
IF 8.097
Liangting Cai,Qiang Zhang,Jean Pierre Mwizerwa,Hongli Wan,Xuelin Yang,Xiaoxiong Xu,Xiayin Yao
All-solid-state lithium batteries employing inorganic solid electrolytes have been regarded as an ultimate solution to safety issues because of their features of no leakage as well as incombustibility and they are expected to achieve higher energy densities owing to their simplified structure. Two-dimensional transition-metal dichalcogenides exhibit a great potential in energy storage devices because of their unique physical and chemical characteristics. In this work, 50 nm thick highly crystalline layered VS2 (hc-VS2) nanosheets are prepared by a solvothermal method, and their electrochemical performances are evaluated in Li/75% Li2S-24% P2S5-1% P2O5/Li10GeP2S12/hc-VS2 all-solid-state lithium batteries. At 50 mA g–1, hc-VS2 nanosheets show a high reversible capacity of 532.2 mAh g–1 after 30 cycles. Moreover, stable discharge capacities are maintained at 436.8 and 270.4 mAh g–1 at 100 and 500 mA g–1 after 100 cycles, respectively. The superior rate capability and cycling stability are ascribed to the better electronic conductivity and well-developed layered structure. In addition, the electrochemical reaction kinetics and capacity contributions were analyzed via cyclic voltammetry measurements at different scan rates.
研究领域:
材料科学
·
能源存储与转换
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Energy Storage
·
2025
·
IF 9.8
Xu Zhang,Jiabao Bai,Yana Liu,Yunfeng Zhu,Jiguang Zhang,Jun Wang,Xiaohui Hu,Rui Shi
Rechargeable Mg Li hybrid batteries (MLHBs) have gained ever-increasing attention owing to their advantages of high theoretical energy density, rich natural sources, and rapid ion intercalation kinetics. Nevertheless, the improvement of MLHBs performance is still seriously plagued by the lack of advanced cathode materials with high reversible capacity and long cycle lifespan. Herein, we have rationally designed an appealing heterostructure consisted of VS 2 microflower with expanded interlayer partially embedded into VS 4 microsphere ( E -VS 2 /VS 4 ) through a facile solvothermal reaction, serving as cathodes for MLHBs. The electrochemical results coupled with systematic kinetic investigations confirm that the synergistic effects of heterointerfaces and sulfur vacancies can facilitate charge transfer, provide rich reaction active sites, and enhance ion transport kinetics. Additionally, theoretical calculations reveal significant charge redistribution at the interface regions, which facilitates electron transfer and ion migration. Consequently, the MLHBs based on the E -VS 2 /VS 4 cathode manifest high reversible capacity (227.2 mAh g −1 at 200 mA g −1 after 70 cycles), excellent energy density (549.9 Wh kg −1 ), and ultralong cycling lifespan (123.3 mAh g −1 after 3000 cycles at 4000 mA g −1 ). Moreover, the ion storage behavior and phase evolution mechanism of E -VS 2 /VS 4 are systematically investigated by comprehensive ex-situ characterizations. This work provides an effective strategy in the rational design of cathode materials with heterointerfaces and vacancies for constructing high-performance metal-ion batteries.
✓ 已验证
产品关联
DOI
高影响因子
FOOD CHEMISTRY
·
2025
·
IF 9.8
Mengru Liu,Taotao Zhe,Limin Zhu,Fan Li,Kaixuan Ma,Chenyu Xuan,Qinlin Feng,Shaohui Ouyang,Li Wang
The contamination of nitrofurantoin (NFT) antibiotics in the food chain poses significant threats to environmental and public health, emphasizing the urgent need for rapid and portable detection. This study presents an electrochemical sensor based on a 2D/2D van der Waals heterojunction of VS 2 and Ti 3 C 2 T x MXene integrated onto a screen-printed carbon electrode (SPCE). Interfacial engineering of Ti S bonds creates efficient charge transfer pathways and a directional built-in electric field, enhancing charge dynamics and electroreduction efficiency. The VS 2 /Ti 3 C 2 T x MXene-SPCE sensor shows an ultralow detection limit of 4.7 nM, a wide linear range (0.01–400 μM), and high stability with strong resistance to interference. Its practical applicability was validated by successful NFT detection in tap water, lake water, milk, and honey, yielding satisfactory results. This work highlights the catalytic potential of VS 2 / Ti 3 C 2 T x MXene heterojunctions and demonstrates the sensor as a promising tool for environmental monitoring and food safety.
研究领域:
材料科学
·
环境科学
·
分析化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Jingjing Wang,Chenxi Huang,Yue Xing,Xiang Shao
The hybridizations of two-dimensional (2D) metallic materials with semiconducting transition metal oxides (TMOs) register attractive heterojunctions, which can find various applications in photostimulated circumstances. In this work, we developed an ambient-pressure chemical vapor deposition method to directly grow T-VS2 on atomically smooth rutile TiO2 single crystals with different terminations and thus successfully constructed a heterojunction model of VS2/TiO2 with a well-defined clean interface. Detailed measurements with Kelvin probe force microscopy revealed the facet-dependent charge transfer occurring at the VS2/TiO2 interfaces, seeing variations not only in the amount and direction of the transferred electrons but also in the photoinduced surface potential changes and the dynamics of photogenerated charge carriers under ultraviolet irradiation. Interestingly, ultrathin T-VS2 was found with considerable magnetism at room temperature, disregarding the charge exchange with the TiO2 substrates. These results may bring deep insights into the photoinspired functionalities of the hybridized system combining metallic transition metal dichalcogenides and TMO materials.
研究领域:
材料科学
·
纳米技术
·
光化学
·
表面科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Energy Storage Materials
·
2020
·
IF 16.28
Dongming Xu,Huanwen Wang,Ruyun Qiu,Qiang Wang,Zhifei Mao,Yingjun Jiang,Rui Wang,Beibei He,Yansheng Gong,Debao Li,Xianluo Hu
Sodium-ion hybrid capacitors (SIHCs) show great promise due to their combination of high energy-storage properties and low cost of Na resources. Yet most anodes in SIHCs suffer from sluggish Na + -diffusion kinetics and relatively low specific capacity, which restrict their widespread development. Herein, bowl-like VS 2 nanosheet arrays are uniformly and robustly anchored on a carbon nanofiber (CNF) substrate through a one-step solvothermal method. The bowl-like VS 2 is featured with an ultrathin thickness (several atomic layers), intrinsically metallic conductivity and an interconnected array architecture. This unique structural design can not only facilitate ultrafast Na + ion-diffusion, but also suppress capacity decay of VS 2 that is caused by the conversion process below 0.3 V. DFT calculations demonstrate a faster Na + transport rate and a lower diffusion energy barrier for the VS 2 /C interface than for the VS 2 /VS 2 bilayer. The quasi-solid-state SIHC full cell that integrates the CNF@VS 2 anode and the graphene sheets-wrapped carbon nanofiber (CNF@GS) cathode, displays prominent energy//power densities in the voltage range of 0.0–4.0 V (116 Wh kg −1 at 0.4 kW kg −1 ; 66 Wh kg −1 at 40 kW kg −1 based on the total mass of both electrodes), outperforming recent SIHCs.
研究领域:
材料科学
·
能源存储
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）