JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2024
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IF 9.4
Tingting Yu,Shaobin Li,Fengbo Li,Li Zhang,Yuping Wang,Jingyu Sun
Two-dimensional (2D) MXene nanomaterials display great potential for green energy storage. However, as a result of self-stacking of MXene nanosheets and the presence of conventional binders, MXene-based nanomaterials are significantly hindered in their rate capability and cycling stability. We successfully constructed a self-supported stereo-structured composite (TMA-V 2 CT x /CoV-LDH/NF) by in-situ growing 2D cobalt vanadium layered double hydroxide (CoV-LDH) vertically on 2D few-layered V 2 CT x MXene nanosheets and interconnecting it with Ni foam (NF) with a self-supported structure to act as a binder-free electrode. In addition to inhibiting CoV-LDH aggregation, the highly conductive V 2 CT x MXene and CoV-LDH work synergistically to improve charge storage. The specific capacitance of the TMA-V 2 CT x /CoV-LDH/NF electrode is 2374 F/g (1187 C/g) at 1 A/g. At the same time, the TMA-V 2 CT x /CoV-LDH/NF exhibits excellent stability, retaining 85.3 % of its specific capacitance at 20 A/g after 10,000 cycles. In addition, the hybrid supercapacitor (HSC) is assembled based on positive electrode (TMA-V 2 CT x /CoV-LDH/NF) and negative electrode (AC), achieving the maximum energy density of 74.4 Wh kg −1 at 750.3 W kg −1 . TMA-V 2 CT x /CoV-LDH/NF has potential as an electrode material for storing green energy. The research strategy provides a development prospect for the construction of novel V 2 CT x MXene-based electrode material with self-supported structures.
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高影响因子
FOOD CHEMISTRY
·
2025
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IF 9.8
Bo Zhang,Yanrong Han,Yanrong Chen,Chenyu Wang,Guozhen Fang,Shuo Wang
A novel molecularly imprinted electrochemical sensor (MIECS) is successfully prepared for the chlortetracycline (CTC) determination in food, based on a gold‑platinum ruthenium/vanadium carbide (Au-PtRu/V 2 CT x ) nanocomposite integrated with a molecularly imprinted polymer (MIP) film. The incorporated nanocomposite, featuring excellent electron transport properties, enhances the current response owing to the synergistic effect between the Au-PtRu nanoalloy (NA) and V 2 CT x MXene. Following a one-step electropolymerization process and the efficient removal of template molecules, imprinted cavities are formed on the imprinted electrode (MIP/Au-PtRu/V 2 CT x /GCE) surface, enhancing the targeted recognition of CTC molecules. Under optimized conditions, the sensor exhibits a broad linear range from 1 to 120 μM with a low detection limit of 0.16 μM (S/N = 3). Besides, the sensor demonstrates excellent selectivity, reproducibility, reusability and stability. Its practical applicability is further validated through CTC detection in food samples, yielding satisfactory spiked recoveries (83.3–93.6 %), which are consistent with high-performance liquid chromatography (HPLC) results.
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高影响因子
FOOD CHEMISTRY
·
2025
·
IF 9.8
Yu Han,Li Zhang,Shaobin Li,Fengbo Li,Jianjiao Xin,Xue Wang,Minjie Liang
Hydroquinone (HQ) and catechol (CC) are toxic isomers with similar structures that often coexist, leading to interference during detection. In this study, we employed a controllable selenization strategy to construct V 2 CT x MXene-based multiphase electrode materials (VSe 2 @V 2 O 3 @V 2 CT x MXene) for the simultaneous detection of HQ and CC. Electrochemical tests revealed VSe 2 @V 2 O 3 @V 2 CT x MXene modified electrode exhibited low electrochemical impedance, a large active surface area, and excellent electrocatalytic performance. The sensor demonstrated linear detection ranges for HQ and CC from 0.5 to 600 μM, with limits of detection 0.144 μM and 0.131 μM, respectively. Additionally, it exhibited excellent repeatability, reproducibility, selectivity, and stability. The practical applicability of the sensor was confirmed through testing in drinking water and beverages, showing satisfactory recovery rates. This work expands the application of V 2 CT x MXene in the field of electrochemical sensing and offers new insights for food safety monitoring.
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高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2022
·
IF 9.965
Tingting Yu,Shaobin Li,Li Zhang,Fengbo Li,Jianxin Wang,Hong Pan,Deqing Zhang
Designing dual-functional electrode materials for supercapacitors and pollutant sensors has attracted great interest from researchers for urgent demand in green energy and the environment. In this work, a novel electrode material V 2 CT x @NiCoMn-OH was successfully constructed for dual-functional orientation via a two-step synthesis strategy, in which the NiCoMn-OH with a three-dimensional (3D) hollow structure was fabricated by employing ZIF-67 as a template and simple anion exchange and composited with the two-dimensional (2D) layered V 2 CT x MXene. The intercalation of NiCoMn-OH can effectively limit the self-accumulation of V 2 CT x MXene nanosheets and build a 3D cross-linked hollow structure, thereby broadening the ion transport channel, exposing more active sites of V 2 CT x @NiCoMn-OH, and simultaneously improving the conductivity of NiCoMn-OH. Benefiting from the unique 3D cross-linked hollow structure, the optimized V 2 CT x @NiCoMn-OH-20 electrode material exhibits an excellent specific capacitance of 827.45 C g −1 at 1 A g −1 . Furthermore, the electrode material has excellent capacitance retention of 88.44% after 10,000 cycles. Moreover, the V 2 CT x @NiCoMn-OH-20//AC ASC device displays a high energy density of 88.35 Wh kg −1 as well as high power density of 7500 W kg −1 during operation. Additionally, the V 2 CT x @NiCoMn-OH-20 exhibited excellent electrocatalytic performance in the detection of hydroquinone, including the low detection limit of 0.559 μM (S/N = 3) and the wide linear range of 2–1050 μM. Therefore, the prepared V 2 CT x @NiCoMn-OH-20 has great potential applications in the fields of supercapacitors and hydroquinone sensors.
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