JOURNAL OF HAZARDOUS MATERIALS
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2021
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IF 10.588
Jianhua Zheng,Lei Zhang
3-D hollow sphere-like Ni 3 V 2 O 8 immobilizing V 2 O 5 nanoparticles were successfully synthesized via in situ recrystallization method without any template. The compact contact between V 2 O 5 and Ni 3 V 2 O 8 ensuring the photo-inducted carriers fast transport, which would be beneficial for inhibiting recombination rate of electron-hole ( e - /h + ) pairs. Moreover, the hollow sphere-like structure composed of the smaller nanoparticle could effectively improve of visible light capture capacity (multiple scattering for hollow architectures). Benefiting the synergistic promoting effect of the suitable heterojunction and the fascinating 3D hollow feature, the V 2 O 5 @Ni 3 V 2 O 8 indicated significantly degradation performance when evaluated as photocatalyst for degradation antibiotics and chlorophenols under visible light irradiation. Impressively, the 2-V 2 O 5 @Ni 3 V 2 O 8 heterojunction deliver the optimal degradation efficiency for TC (OTC) and 2,4-DCP (4-CP) were 90.0% (~ 91.2%) and 92.6% (~ 90.0%), respectively. The appearance mechanism for the enhancement photocatalytic performance was also elucidated in detail. The facile strategy provides a novel insight into the designing of the photocatalyst with advantages of charges separation and light-harvesting for degradation of contaminants in wastewater.
研究领域:
材料科学
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环境科学
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化学工程
✓ 已验证
DOI
PubMed
高影响因子
APPLIED SURFACE SCIENCE
·
2024
·
IF 6.3
Wangchang Geng,Pengfei Song,Xinrou Cao,Libing Duan
Metal-organic frameworks (MOFs)-derived metal oxides are characterized by high porosity, large specific surface area, controllable composition, and tunable pore size, which make them have good potential as gas sensing materials. In this paper, Ni 3 V 2 O 8 @NiO hollow microspheres derived from bimetallic Ni/V-MOFs were synthesized using a three-step method (solvothermal method, cation-exchange method, and annealing process). XRD, Raman, SEM, TEM, XPS, and BET techniques were employed to investigate the structure, morphology, specific surface area, pore size distributions, elemental composition, and chemical state of Ni 3 V 2 O 8 @NiO composites. Gas sensing performance studies showed that the NV@NiO-2 sensor exhibited higher response (43.7) to 100 ppm triethylamine at a lower operating temperature (240℃), shorter response/recovery time (88 s/127 s), higher selectivity, lower detection limit (4.5 ppb), and better repeatability. In addition, the NV@NiO-2 sensor exhibited a strong linear relationship (R 2 = 0.996) between response and gas concentration across a range of 1–100 ppm. The present work serves as a valuable reference for the preparation of triethylamine sensing materials with high specific surface area, high porosity, high response and high selectivity.
研究领域:
材料科学
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化学传感器
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF POWER SOURCES
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2020
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IF 8.247
Yan Zhang,Xin Xu,Yunfang Gao,Dunfeng Gao,Zhihua Wei,Haihua Wu
To develop a high-performance positive electrode for asymmetric supercapacitor (ASC), a novel Ni 3 V 2 O 8 @carbon nanotubes (CNTs) composite with three-dimensionally (3D) flower-like structure is designed and prepared through an in-situ hydrothermal method . The particularly open architecture self-assembled by interlacement of Ni 3 V 2 O 8 nano-petals with a high surface area provides interconnected ion diffusion channels and highly exposed active centers for ion absorption. The electrical conductivity and charge transport are greatly improved by anchoring CNTs on Ni 3 V 2 O 8 . The synergistic effect between Ni 3 V 2 O 8 and CNTs gives rise to an improved electrochemical performance with high specific capacitance (1054 F g −1 at 1 A g −1 ), good rate capability and excellent cycling stability (89% capacitance retention after 10,000 cycles). An ASC equipped with a Ni 3 V 2 O 8 @CNTs positive electrode and an activated rice husk carbon (ARHC) negative electrode achieves a remarkable energy density of 45.5 Wh kg −1 at 795 W kg −1 and outstanding cycling stability after 10,000 cycles in a wide operating voltage window of 1.6 V. The impressive performance of the Ni 3 V 2 O 8 @CNTs composite makes it a promising candidate for commercial application.
研究领域:
材料科学
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电化学
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能源存储
✓ 已验证
DOI
高影响因子
RSC Advances
·
2023
·Vol. 13
·期 37
·26102-26110
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IF 3.9
Jierui Yang,Benqi Chen,Huiting Qiu,Shuang Meng,Yunhui Yang
Ascorbic acid is a nutritional small molecule essential to human life activities and health, playing a vital role in many physiological processes. Fresh fruits and beverages can provide abundant AA to maintain human metabolic balance. Therefore, it is of great significance to develop a nanomaterial with superior nanozyme activity for rapid and convenient detection of ascorbic acid (AA) in fruits and beverages. Herein, a dual-signal sensing platform based on UV-vis absorption and test strip chromaticity for the quantitative determination of AA is presented. The sensing platform is based on the horseradish peroxidase-like activity of Ni3V2O8 nanoflowers, which catalyzes the oxidation of 3,3′,5,5′-tetramethylbenzidine (TMB) by hydrogen peroxide to the blue oxide TMB (ox TMB). The ox TMB produced by the oxidation has a characteristic absorption peak at 650 nm. In the presence of AA, the blue ox TMB is reduced to colorless TMB, and the quantitative detection of AA can be achieved by detecting the decrease in intensity of the absorption peak by UV-Vis spectrophotometry. Under the optimal experimental conditions, the sensing platform exhibited excellent sensitivity and selectivity. A wide linear range of 0.1 μM to 40 μM with a detection limit of 0.032 μM was obtained. The linear equation is ΔA = 0.02513c + 0.1164 with a correlation coefficient of 0.9979. It showed excellent properties in the detection of real samples of fruit juices and beverages, meanwhile, a method for the rapid detection of AA based on chromaticity change of test strips was constructed with high sensitivity and convenience. The linearity range for the ascorbic acid was 1–50 μM with LOD of 0.42 μM. The developed sensing platform has the capability to quickly and accurately detect ascorbic acid (AA) in fresh fruits and beverages. This proposed method offers a new and promising approach for the rapid and cost-effective detection of ascorbic acid, which has a wide range of potential applications.
研究领域:
纳米技术
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分析化学
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食品科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2023
·Vol. 33
·期 33
·2301727
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IF 19
Amjad Farid,Chen Zhonghua,Abdul Sammed Khan,Muhammad Javid,Ijaz Ahmad Khan,Aqib Ali Khan,Zeng Fan,Lujun Pan
High fabrication cost, chemical instability, and complex immobilization of enzyme molecules are critical issues of enzyme-based glucose sensors. Designing state-of-the-art, binder-free, and non-enzymatic glucose sensing probes plays an imperative role to cope with the aforementioned issues. 3D carbonaceous nanomaterials coated with transition metal vanadates (TMVs) are a favorable biomimetic platform for glucose quantification. Peculiar hierarchical structure, enhanced conductivity, synergistic interaction, multiple oxidation states, and high catalytic activity would make such composite a potential contender for non-enzymatic glucose sensing. Herein, 3D helical-shaped carbon nanocoils (CNCs) are grown on nickel foam (NF) via chemical vapor deposition method to prepare a robust CNCs/NF scaffold. Then, a hydrothermal route is followed to grow interconnected free-standing Ni 3 V 2 O 8 nanosheets (NSs) on CNCs/NF scaffold. This novel and binder-free Ni 3 V 2 O 8 NSs/CNCs/NF hierarchical composite possesses superior electrochemical active area (ECSA) and exceptional electrochemical efficacy. Amperometric analysis exhibits extremely prompt detection time (0.1 s), elevated sensitivity (5214 µA mM −1 cm −2 ), and low detection limit (0.04 µM). Developed sensor demonstrates appreciable recoveries (93.3 to 103.3%) regarding glucose concentration in human serum. The appealing analytical results show that deployment of a 3D helical-shaped hierarchical smart scaffold can be an effective strategy for developing efficient and advanced non-enzymatic glucose sensors.
研究领域:
材料科学
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纳米技术
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电化学
·
生物传感器
✓ 已验证
产品关联
DOI
高影响因子
Journal of Energy Storage
·
2026
·
IF 9.8
Yuanjie Wei,Jian Zou,Hehe Ren,Jiaoyang Shen,Chenhong Xu,Jing Liang,Wei Wu
The emergence of Internet of Things (IoT) and wearable devices has driven demand for flexible and miniaturized supercapacitors. Screen printing, as an emerging technology, demonstrates strong vitality and enormous potential in the manufacturing of supercapacitors. Herein, the Ni 3 V 2 O 8 /carbon nanofibers (CNFs) composite electrode materials are prepared via hydrothermal pyrolysis, and its morphology, composition, oxidation states, and bonding information are carefully characterized. Electrochemical characterizations revealed that the Ni 3 V 2 O 8 /CNFs electrode exhibited outstanding performance, with a significant specific capacitance of 1645 F g −1 (1 A g −1 ). Furthermore, the electrode demonstrated remarkable cycling stability, with a capacitance retention of 80.4 % after 20,000 cycles, highlighting its excellent rate capability and robust pseudocapacitive properties. Subsequently, the screen-printing inks are formulated using as-prepared Ni 3 V 2 O 8 /CNFs, acetylene black, and ethyl cellulose. The flexible printed Ni 3 V 2 O 8 /CNFs//AC asymmetric supercapacitor exhibited an areal capacitance of 234.18 mF cm −2 (1 mA cm −2 ). After 15,000 charge-discharge cycles, it retained 76.73 % of its capacitance. The individual supercapacitor achieved a charging voltage of up to 1.60 V, and could power an LED bouquet for over 35 s. We anticipate that the printed supercapacitor will become a promising candidate for next-generation wearable and portable energy, storage systems.
✓ 已验证
产品关联
DOI
高影响因子
Nano Energy
·
2017
·
IF 12.343
Chade Lv,Jingxue Sun,Gang Chen,Chunshuang Yan,Dahong Chen
Amorphous structure, possessing vast preponderances for boosting the application of lithium-ion batteries (LIBs), has drawn considerable attention as an elegant electrode structure . However, due to its thermal instability, amorphous transition-metal vanadates lack of exploration. In this work, we firstly report the fabrication of Ni 3 V 2 O 8 amorphous wire encapsulated in crystalline tube nanostructure (NV-aWcT) by single spinneret electrospinning with subsequent heat treatment . The formation of this unique nanostructure is ascribed to shell heat transfer retardation by tuning the pyrolysis balance between “surface locking” and “inward migration” during the calcination process. Benefit from the collective characteristics of interior amorphous wire and outer tubular shell, NV-aWcT possesses mesoporosity, void spaces, defective sites and high surface areas, realizing superior electrochemical performance with high specific capacity, outstanding cycling stability, and superior rate capability (962 mA h g –1 at 300 mA g –1 after 300 cycles).
研究领域:
材料科学
·
电化学
·
纳米科技
·
能源存储
·
无机化学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）