Facile synthesis Zn-Ni bimetallic MOF with enhanced crystallinity for high power density supercapacitor applications

Zhu, Yuanfei; Tao, Zengren; Cai, Chengyan; Tan, Yuanming; Wang, Anding; Yang, Yangyi

doi:10.1016/j.inoche.2022.109391

Cited by 28 publications

(5 citation statements)

References 59 publications

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“…The figure reveals a noticeable disparity in the crystal shape at 2θ = 5.23° among the Zn–Ni MOF samples prepared for different times. Moreover, the Zn–Ni MOF prepared for 8 h demonstrates superior crystallinity at both 2θ = 11.07° and 2θ = 18.56°, which correspond to the (003) crystal face; this is similar to the study by Zhu et al Interestingly, regardless of the preparation time, there is only minimal variation in the intensities of several diffraction peaks along the (110), (220), and (420) crystal planes. These findings suggest that the main body structures remain similar and maintain a high level of crystallinity across all samples.…”

Section: Resultssupporting

confidence: 86%

One-Step Purification and Immobilization of Glycosyltransferase with Zn–Ni MOF for the Synthesis of Rare Ginsenoside Rh2

Li,

Liu,

et al. 2024

ACS Appl. Mater. Interfaces

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Uridine diphosphate (UDP)-glucosyltransferases (UGTs) have received increasing attention in the field of ginsenoside Rh2 conversion. By harnessing the metal chelation between transition metal ions and imidazole groups present on Histagged enzymes, a specific immobilization of the enzyme within metal−organic frameworks (MOFs) is achieved. This innovative approach not only enhances the stability and reusability of the enzyme but also enables one-step purification and immobilization. Consequently, the need for purifying crude enzyme solutions is effectively circumvented, resulting in significant cost savings during experimentation. The use of immobilized enzymes in catalytic reactions has shown great potential for achieving higher conversion rates of ginsenoside Rh2. In this study, highly stable mesoporous Zn−Ni MOF materials were synthesized at 150 °C by a solvothermal method. The UGT immobilized on the Zn−Ni MOF (referred to as UGT@Zn−Ni MOF) exhibited superior pH adaptability and thermal stability, retaining approximately 76% of its initial activity even after undergoing 7 cycles. Furthermore, the relative activity of the immobilized enzyme remained at an impressive 80.22% even after 45 days of storage. The strong specific adsorption property of Zn−Ni MOF on His-tagged UGT was confirmed through analysis using polyacrylamide gel electrophoresis. UGT@Zn−Ni MOF was used to catalyze the conversion reaction, and the concentration of rare ginsenoside Rh2 was generated at 3.15 μg/mL. The results showed that Zn−Ni MOF is a material that can efficiently purify and immobilize His-tagged enzyme in one step and has great potential for industrial applications in enzyme purification and ginsenoside synthesis.

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Section: Resultssupporting

confidence: 86%

One-Step Purification and Immobilization of Glycosyltransferase with Zn–Ni MOF for the Synthesis of Rare Ginsenoside Rh2

Li,

Liu,

et al. 2024

ACS Appl. Mater. Interfaces

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“…According to the GCD curves of the device (Figure c), the specific capacitances were calculated to be 49.3, 47.4, 44.8, 42.5, and 39.8 F g –1 at 0.5, 1, 2, 3, and 5 A g –1 , respectively (Figure d). The device exhibits a maximum energy density of 16.9 Wh kg –1 and a power density of 800 W kg –1 (Figure e), which are comparable or even superior to that of the reported MOF-based supercapacitors. − Figure f shows the cycling performance of the device; after 5000 cycles, the capacitance retention is 84.6%.…”

Section: Resultsmentioning

confidence: 99%

By Introducing Multiple Hydrogen Bonds Endows MOF Electrodes with an Enhanced Structural Stability

Liu,

Ye,

Cheng

et al. 2024

Inorg. Chem.

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Recently, metal−organic frameworks (MOFs) have attracted great interest in energy storage areas. However, the poor structural stability of MOFs derived from weak coordination bonds limits their applications. Here, quadruple hydrogen bonds (Hbonds) were introduced onto the MOFs to enhance their structural stability. Cross-linked networks could be formed between molecules owing to multiple H-bonds, strengthening the framework stability. Moreover, the dynamic reversibility of H-bonds could endow MOFs with self-healing ability. Furthermore, due to lower binding energy compared to coordination bonds, H-bonds break preferentially when subjected to internal stress, thus protecting the MOFs. Consequently, the as-prepared self-healing hybrid (SHH-Cu-MOF@Ti 3 C 2 T X ) exhibited high capacitance retention (89.4%) after 5000 cycles at 1 A g −1 , while that hybrid without dynamic H-bonds (H-Cu-MOF@Ti 3 C 2 T X ) presented a 79.9% retention, delivering an enhancement in cycling stability. Moreover, an asymmetric supercapacitor (ASC) was fabricated by employing SHH-Cu-MOF@Ti 3 C 2 T X and activated carbon (AC) as the electrodes. The ASC delivered a specific capacitance (47.4 F g −1 at 1 A g −1 ), an energy density (16.9 Wh kg −1 ), and a power density (800 W kg −1 ) as well as good rate ability (retains 81% of its initial capacitance from 0.2 A g −1 to 5 A g −1 ).

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Section: Introductionmentioning

confidence: 99%

“…Therefore, utilizing MOFs as electrodes must be probed for supercapacitors while avoiding complicated treatments. However, the direct application of MOFs is constrained by their low conductivity 12 and instability. 13 Recently, defective MOFs have garnered considerable attention owing to their modifiable physicochemical proper- ties.…”

Section: Introductionmentioning

confidence: 99%

Binder-Free Defective Bimetallic Metal-Organic Framework Nanostructures with Lattice Distortion as Hybrid Supercapacitor Electrodes

Lin,

Guo,

Cai

et al. 2024

ACS Appl. Nano Mater.

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Owing to their adaptable topologies and simplicity of functionalization, metal−organic frameworks (MOFs) are highly soughtafter materials for battery-type electrodes. To improve the MOFs' overall conductivity and instability, a Ni/Co-MOF nanostructure grows in situ on nickel foam (NF) with the controlled introduction of structural defects using a one-step solvothermal method. Benzoic acid (BA) is selected as the cost-effective regulator and ligand to compete with the original ligand terephthalic acid (TPA), for inducing lattice distortion. The incorporation of BA results in increased micropore volume and surface area. These characteristics improve the contact between the electrode and electrolyte, leading to a rapid redox reaction. Thus, the defective sample Ni/Co-MOF/NF with 10% BA exhibits an ultrahigh capacity of 352.3 mAh g −1 at a current density of 1 A g −1 . Moreover, the assembled hybrid supercapacitor device (10% Ni/Co-MOF/NF//AC) demonstrates a suitable energy density of 33.5 Wh kg −1 at a power density of 404.6 W kg −1 and 90.3% capacitance retention after 8000 cycles. These findings provide valuable insights for developing ultrahigh-performance MOF nanostructures that can be directly used as supercapacitor electrodes.

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Facile synthesis Zn-Ni bimetallic MOF with enhanced crystallinity for high power density supercapacitor applications

Cited by 28 publications

References 59 publications

One-Step Purification and Immobilization of Glycosyltransferase with Zn–Ni MOF for the Synthesis of Rare Ginsenoside Rh2

One-Step Purification and Immobilization of Glycosyltransferase with Zn–Ni MOF for the Synthesis of Rare Ginsenoside Rh2

By Introducing Multiple Hydrogen Bonds Endows MOF Electrodes with an Enhanced Structural Stability

Binder-Free Defective Bimetallic Metal-Organic Framework Nanostructures with Lattice Distortion as Hybrid Supercapacitor Electrodes

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