Materials
·
2020
·Vol. 13
·期 21
·4870
·
IF 3.057
Xiao Li,Jun Li,Ying Zhang,Peng Zhao,Ruyan Lei,Baige Yuan,Manman Xia
Ni(OH)2derived from an MOF template was synthesized as an electrode material for supercapacitors. The electrochemical performance of the electrode was adjusted by effectively regulating the morphology of Ni(OH)2. The evolution of electrochemical performance of the electrode with morphology of Ni(OH)2was highlighted in detail, based on which honeycomb-like Ni(OH)2was successfully synthesized, and endowed the electrode with outstanding electrochemical performance. For the three-electrode testing system, honeycomb-like Ni(OH)2exhibited a very high specific capacitance (1865 F·g−1at 1 A·g−1, 1550 F·g−1at 5 mV·s−1). Moreover, it also presented an excellent rate capability and cycling stability, due to 59.46 % of the initial value (1 A·g−1) being retained at 10 A·g−1, and 172% of initial value (first circle at 50 mV·s−1) being retained after 20,000 cycles. With respect to the assembled hybrid supercapacitor, honeycomb-like Ni(OH)2also displayed superior electrochemical performance, with a high energy density (83.9 Wh·kg−1at a power density of 374.8 W·kg−1). The outstanding electrochemical performance of Ni(OH)2should be attributed to its unique honeycomb-like structure, with a very high specific surface area, which greatly accelerates the transformation and diffusion of active ions.Keywords:honeycomb-like structure;Ni-MOF;Ni(OH)2;electrode material;supercapacitor
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
PubMed
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2018
·Vol. 53
·期 9
·6807-6818
·
IF 2.993
Gao Shuwen,Sui Yanwei,Wei Fuxiang,Qi Jiqiu,Meng Qingkun,He Yezeng
Metal–organic frameworks (MOF) used directly in supercapacitors have attracted much attention for their special porous structure and potential high performance. Here, the Ni-MOF is fabricated by one-step facile hydrothermal method with a modification of mixed solution with DMF and water instead of pure DMF. After characterization, the Ni-MOF exhibits loosely stacked layer-cuboid structure with abundant mesoporous, which is beneficial for the charge transfer and ion transport for supercapacitors. In the three-electrode system, this Ni-MOF serving as working electrode shows remarkable specific capacitance of 804 Fg −1 at 1 Ag −1 , excellent rate capacitance of 534 Fg −1 at 10 Ag −1 , and with 302 Fg −1 retention after 5000 cycles, when measured in 2 M KOH electrolyte solution. To make a further research into the practical utility of the Ni-MOF, the Ni-MOF//AC asymmetrical supercapacitor device is assembled with the Ni-MOF and active carbon acted as positive and negative electrode materials, respectively. This device exhibits high specific energy of 31.5 Wh kg −1 , at specific power of 800 W kg −1 . All these results demonstrate that this Ni-MOF is a kind of promising electrode material for high-performance supercapacitors.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
MATERIALS & DESIGN
·
2022
·
IF 9.417
Hongxiang Yu,Xiaolong Liu,Weisheng Meng,Zhiwen Zheng,Dan Qiao,Dapeng Feng,Zhenbin Gong,Guojun Dong
Two-dimension (2D) nano materials are diffusely employed as lubricant additives. In this paper, three kinds of ultrathin 2D metal-organic framework (MOF) nanosheets with different metal ions (Ni 2+ , Zn 2+ , and Cu 2+ ) were successfully synthesized by ultrasonic assisted self-assembly under appropriate solvent ratio. Ni-MOF nanosheets as a new additive in 500 N system exhibit the best dispersion stability and lubrication performance, which is related to its maximum absolute value of Zeta potential. Compared with pure 500 N, the best tribological properties were obtained with the addition of 0.1 wt% Ni-MOF nanosheets, reducing friction by 33.2 ± 12.4 % and wear by 98.7 ± 0.14 %. The excellent performance originates from interlayer sliding effect, polishing effect, and tribofilm with concrete structure. The iron oxide particles embedded in the tribofilm play a supporting structrue for the whole tribofilm. The carbonaceous and nitrogenous compounds are filled around the iron oxide particles, which makes tribofilm denser and more smooth. The further friction tests under higher sliding velocity and longer term reveal the potential industrial use of Ni-MOF nanosheets.
研究领域:
材料科学
·
摩擦学
✓ 已验证
产品关联
DOI
高影响因子
APPLIED ORGANOMETALLIC CHEMISTRY
·
2025
·Vol. 39
·期 11
·e70403
·
IF 0
Yingxue Zhang,Qiang Wang,Jingwen Cao,Xinhao Zhang,Yongze Zhang,Yali Chen
Gas tracer technology plays a crucial role in enhancing oil recovery during oil and gas field development. However, the limited storage capacity and detection efficiency of current gas tracers hinder their broader application. In this study, Ni-MOF-74 was successfully synthesized through a solvothermal method and subsequently modified by grafting perfluoroalkyl chains. The results demonstrated that the crystal structure and morphology of the material remained stable following fluorination, while its thermal stability was significantly improved. Notably, the specific surface area decreased with the increasing length of the grafted perfluoroalkyl chains, accompanied by a reduction in surface free energy. Additionally, the number of Lewis acidic sites increased, while the number of Lewis basic sites decreased. Adsorption performance tests revealed that the modified Ni-MOF-74 exhibited high adsorption capacities for difluorochloromethane (R22) and tetrafluoroethane (R134a), with values of 2.623 mmol·g −1 and 2.385 mmol·g −1 , respectively. These capacities were significantly higher than those of conventional activated carbon adsorption tubes. This study offers a novel approach to efficient gas tracer storage/detection and provides theoretical insights into the potential application of metal–organic frameworks (MOFs) in oil and gas field development.
✓ 已验证
DOI
MICROCHEMICAL JOURNAL
·
2022
·
IF 5.304
Juan Lu,Zhuo Sun,Xin Zhang,Xiangyu Shan,Qian Wu,Yingjie Zhao,Li Tian
A novel electrochemiluminescence (ECL) sensor for glucose detection was constructed by covering Au nanoparticles (Au NPs), Ni metal–organic frameworks nanofibers (Ni-MOF NFs) and glucose oxidase (GOD) on the electrode surface, respectively. Ni-MOF NFs prepared by electrostatic spinning can be used as GOD carrier and ECL promoter. Meanwhile, synergistic effect of Ni-MOF NFs and Au NPs could amplify the ECL signal of Ru(bpy) 3 2+ -TPrA system. With the increasing of glucose concentration, ECL signal was also increasing, so a method for determining glucose could be established. The possible mechanism of luminescence was investigated, and the parameters affecting the experimental reaction were also studied. Under the optimal conditions, the constructed ECL sensor can effectively detect glucose in the range of 2.0 × 10 −10 to 2.0 × 10 −5 M, and the detection limit was 6.7 × 10 −11 M. This study demonstrated for the first time that Ni-MOF NFs could serve as ECL accelerator for the facile detection of glucose in human serum.
研究领域:
生物分析化学
·
电化学传感
·
纳米生物技术
·
临床检验医学
·
分子诊断
✓ 已验证
DOI
高影响因子
NANO
·
2019
·
IF 1.293
Shuwen Gao,Yanwei Sui,Fuxiang Wei,Jiqiu Qi,Qingkun Meng,Yaojian Ren,Yezeng He
A series of nickel sulfides derived from the hexagonal Ni-MOF are vulcanized through adjusting the hydrothermal time and the thiourea concentration. Among all the obtained nickel sulfides, one sample Ni-S2-3, which inherits the Ni-MOF’s morphology, shows the best electrochemical performance with a remarkable specific capacitance of 1128 Fg − 1 at 1 Ag − 1 , a rate capacitance of 50% and a long cycle life of 74% retention after 5000 cycles. Furthermore, the asymmetrical supercapacitors (SCs) based on Ni-S2-3//AC exhibit a good supercapacitive performance with a maximum power density of 16.3 Wh kg − 1 at a power density of 800 Wkg − 1 . All these results indicate that vulcanizing Ni-MOF is an effective way to fabricate a superior electrode material with excellent electrochemical performance for SCs.
研究领域:
材料科学
·
能源存储与转换
✓ 已验证
产品关联
DOI
高影响因子
ANALYTICA CHIMICA ACTA
·
2020
·
IF 5.977
Muxin Lu,Yajuan Deng,Yuanchang Li,Tianbao Li,Juan Xu,Shu-Wei Chen,Jinyi Wang
The detection of blood glucose level receives much attention, because diabetes has become one of the significant threats to human health worldwide. In this paper, we described a novel core-shell MOF@MOF composite-based electrochemical sensor for nonenzymatic glucose sensing in alkaline media. The core-shell UiO-67@Ni-MOF composites were synthesized by internal extended growth of shell Ni-MOF on the core UiO-67 under polyvinylpyrrolidone (PVP) regulation. In the sensor system, UiO-67 with large specific surface area and good conductivity was used to accelerate the rate of electron transfer of UiO-67@Ni-MOF. Ni-MOF served as an electrocatalytic material due to excellent electrochemical activity toward glucose oxidation . The morphology, structure, and electrochemical performance of UiO-67@Ni-MOF composites were characterized. To demonstrate the detection performance of the UiO-67@Ni-MOF composite-based sensor, it was successfully used for nonenzymatic glucose sensing. The results indicated that UiO-67@Ni-MOF composites exhibited high electrocatalytic activity toward glucose oxidation compared with individual UiO-67 and Ni-MOF. Moreover, the sensor possessed high sensitivity and selectivity for real-time amperometric detection of glucose. It performed glucose level detection in human serum samples with acceptable reliability and accuracy. The present work suggested that the as-fabricated sensor is promising for nonenzymatic glucose sensing in real samples and holds great potential as an alternative tool for the rapid diagnosis of diabetes and for monitoring blood glucose levels daily.
研究领域:
生物医学工程
·
材料科学
·
分析化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Materials
·
2025
·Vol. 18
·期 14
·3419
·
IF 3.2
Muhammad Sabir,Mahmoud Sayed,Iram Riaz,Guogen Qiu,Muhammad Tahir,Khuloud A. Alibrahim,Wang Wang
The rapid recombination of photoinduced charge carriers in semiconductors remains a significant challenge for their practical application in photocatalysis. This study presents the design of a step-scheme (S-scheme) heterojunction composed of carbon nitride (g-C3N4) and nickel-based metal–organic framework (Ni-MOF) to achieve enhanced charge separation. The establishment of an S-scheme charge transfer configuration at the interface of the Ni-MOF/g-C3N4heterostructure plays a pivotal role in enabling efficient charge carrier separation, and hence, high CO2photoreduction efficiency with a CO evolution rate of 1014.6 µmol g−1h−1and selectivity of 95% under simulated solar illumination. CO evolution represents an approximately 3.7-fold enhancement compared to pristine Ni-MOF. Density functional theory (DFT) calculations, supported by in situ irradiated X-ray photoelectron spectroscopy (XPS) and electron paramagnetic resonance (EPR) experimental results, confirmed the establishment of a well-defined and strongly bonded interface, which improves the charge transfer and separation following the S-scheme mechanism. This study sheds light on MOF-based S-scheme heterojunctions as fruitful and selective alternatives for practical CO2photoreduction.
研究领域:
材料科学
·
环境科学
·
化学工程
·
纳米技术
·
物理化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ELECTROCHIMICA ACTA
·
2026
·
IF 5.8
Ruipeng Hao,Fangyuan He,Xuwen Gao,Wenbo Lu,Sumin Bian,Hugo Vankelecom,Chenzhong Li
Myricetin is a naturally occurring flavonoid found in various fruits and medicinal plants, possessing significant antioxidant and pharmacological activities. Accurate determination of myricetin is crucial for food quality control and pharmaceutical analysis. In this work, we synthesized a hierarchical composite consisting of cobalt-based Prussian blue analogue grown on Ni-MOF nanosheets supported on nickel foam (Co-PBA@Ni-MOF/NF) and employed it as a sensitive electrochemical sensor for myricetin detection. The composite combines the high conductivity and large surface area of Ni-MOF with the uniform catalytic sites of Co-PBA, significantly enhancing the electrocatalytic oxidation of myricetin. The as-prepared myricetin electrochemical sensor exhibited a wide linear range of 0–500 μM, a low detection limit of 0.168 μM, and high sensitivity of 1126 μA·mM⁻ 1 ·cm⁻ 2 . Furthermore, this sensor demonstrated excellent selectivity, stability, and reproducibility. Importantly, the sensor was successfully applied for the quantitative detection of myricetin in juice samples, achieving a satisfactory recovery rate of 98.15%–101.37%, demonstrating its practical utility for myricetin detection in real food samples.
✓ 已验证
产品关联
DOI
高影响因子
DALTON TRANSACTIONS
·
2024
·Vol. 53
·期 36
·15093-15100
·
IF 3.5
Fang Wu,Yuhong Jiao,Jin-long Ge,Yujun Zhu,Chao Feng,Zhong Wu,Qiu Li
Facilitating the surface reconstruction of pre-catalysts has been considered an effective strategy for constructing low-cost and highly efficient OER electrocatalysts. Metal doping is a feasible way to activate the surface reconstruction, thus enhancing the OER performance. Herein, we report a facile hydrothermal method to synthesize a series of Zn-doped Ni-MOF on nickel foam (NiZn-MOF/NF) as promising pre-catalysts toward the oxygen evolution reaction (OER). The Zn leaching of NiZn-MOF/NF can promote the surface self-reconstruction of NiZn-MOF/NF into oxygen-vacancy-rich NiOOH after electrochemical activation. Benefiting from the optimized electronic structure, abundant defects, more accessible active sites, and enhanced electrical conductivity, the reconstructed metal oxyhydroxide hybrids exhibit better electrocatalytic activity than the catalysts transformed from Ni-MOF/NF without Zn doping. The optimized NiZn-MOF/NF-OH as an OER catalyst has an overpotential of 336 mV at 100 mA cm−2, and a Tafel slope of 65.9 mV dec−1, as well as stability over 12 h. This work reveals that Zn cation-doping/leaching induces the surface reconstruction of pre-catalysts for enhanced oxygen catalytic activity, which provides a new approach for the development of advanced electrocatalysts.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF SOLID STATE CHEMISTRY
·
2022
·
IF 3.656
Jia-Wei Wang,Ying-Xia Ma,Xiao-Ya Kang,Hai-Jun Yang,Bing-Lu Liu,Shu-Shu Li,Xiao-Dan Zhang,Fen Ran
Metal-organic framework (MOF) has great potential in the field of supercapacitors as electrode material due to its high specific surface area and unique structure. Herein, a series of nickel MOFs (Ni-MOFs) were fabricated by one-pot solvothermal method at different experimental conditions. The electrochemical properties of the Ni-MOFs as electrode materials can be tuned by adjusting the experimental conditions to regulate the structures. The result indicates that a novel moss-like three-dimensional (3D) Ni-MOF had the maximum specific capacity of 638 C g -1 at a current density of 0.5 A g -1 . The asymmetric supercapacitor (ASC) assembled by using moss-like 3D Ni-MOF as the positive electrode and active carbon as the negative electrode exhibited a high energy density of 30.4 Wh kg -1 at power density of 407.4 W kg -1 .
研究领域:
材料科学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
Applied Materials Today
·
2026
·
IF 7
Jiesai Ma,Junhua Zhao,Qin Hu,Ruo Wang,Shen Wang,Yangjun Mao,Xiaohong Tao,Hexin Wang,Jiawen Hong,Qingqing Xu,Xiangsheng Xu
Metal-organic frameworks (MOFs) are promising electrochromic materials owing to their rapid response and multicolor switching capabilities. However, their performance in thin-film configurations is often limited by slow switching speeds and insufficient optical contrast. In this study, a conjugated biphenyl-based ligand, 4,4′-dihydroxy-3,3′-biphenyldicarboxylic acid (DHBDC), was employed to synthesize Co/Ni MOF films directly on fluorine-doped tin oxide (FTO) substrates via a one-pot solvothermal method. The introduction of Co 2+ and the Ni/Co molar ratio are identified as decisive factors for steering the mesoscopic architecture, enabling precise tuning from agglomerated particles to a well-aligned nanorod arrays. The film fabricated with an equimolar (1:1) Ni/Co ratio at 150 °C delivers optimal performance, exhibiting a high optical contrast of 84% at 900 nm with rapid coloration/bleaching times of 2.9 s and 7.0 s, respectively, alongside good stability over 1000 cycles. Electrochemical analysis confirms that this optimal morphology yields the highest charge transport kinetics and Li + diffusion coefficient. This work provides a viable strategy and fundamental insights for developing high-performance MOF-based electrochromic materials.
✓ 已验证
产品关联
DOI
高影响因子
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