Structural engineering of ruthenium decorated zeolitic imidazole framework nanocomposite for hydrogen evolution reactions and supercapacitors

Rabani, Iqra; Lee, Jewon; Choi, Sung R.; Park, Jun-Young; Patil, Supriya A.; Turpu, G. R.; Kim, Min Soo; Soo-Seo, Young

doi:10.1016/j.est.2023.106885

Cited by 16 publications

(11 citation statements)

References 73 publications

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“…As evident in the high-resolution O 1 s spectrum shown in Figure 4 b, the peaks obtained at 531.5 and 533.0 eV binding energies were associated with C–O and C=O, respectively [ 25 ]. The high-resolution N 1 s spectrum ( Figure 4 c) revealed four peaks of pyridinic N (397.4 eV), pyrrolic N (398.0 eV), graphitic N (399.1 eV), and oxidized N (400.1 eV) [ 26 ]. Figure 4 d further presents the Zn 2p high-resolution XPS profile, with peaks at binding energies of 1044.5 eV and 1021.5 eV, associated with the Zn 2p 1/2 and Zn 2p 3/2 states, respectively.…”

Section: Resultsmentioning

confidence: 99%

“…Metal–organic frameworks (MOFs) are a class of porous materials composed of metal ions or clusters connected by organic ligands [ 23 ]. They have unique properties that make them attractive for a range of applications, including catalysis, gas storage, separation, and sensing [ 24 , 25 , 26 ]. Interestingly, MOFs have flexible structures, variable chemical composition, high surface area, an affinity for specific substances, and functional pore sidewalls.…”

Section: Introductionmentioning

confidence: 99%

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Tunning the Zeolitic Imidazole Framework (ZIF8) through the Wet Chemical Route for the Hydrogen Evolution Reaction

et al. 2023

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Utilizing zeolitic imidazolate frameworks (ZIFs) poses a significant challenge that demands a facile synthesis method to produce uniform and nanometer-scale materials with high surface areas while achieving high yields. Herein, we demonstrate a facile and cost-effective strategy to systematically produce ZIF8 nanocrystals. Typically, ZIF8 nanocrystal synthesis involves a wet chemical route. As the reaction time decreased (150, 120, and 90 min), the size of the ZIF8 crystals decreased with uniform morphology, and productivity reached as high as 89%. The composition of the product was confirmed through XRD, FE-SEM, TEM, EDS, and Raman spectroscopy. The ZIF8 synthesized with different reaction time was finally employed for catalyzing the electrochemical hydrogen evaluation reaction (HER). The optimized ZIF8-3 obtained at 90 min of reaction time exhibited a superior catalytic action on the HER in alkaline medium, along with a remarkably long-term stability for 24 h compared with the other ZIF8 nanocrystals obtained at different reaction times. Specifically, the optimized ZIF8-3 sample revealed an HER overpotential of 172 mV and a Tafel slope of 104.15 mV·dec−1. This finding, thus, demonstrates ZIF8 as a promising electrocatalyst for the production of high-value-added green and sustainable hydrogen energy.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Tunning the Zeolitic Imidazole Framework (ZIF8) through the Wet Chemical Route for the Hydrogen Evolution Reaction

et al. 2023

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“…The specific capacitance Cs (F/g) of electrode was estimated from the non-linear GCD curve applying Equation (1) [ 49 , 50 , 51 ].

where, I is the discharge current density (A g −1 ), Δ V is the potential window ( V ), m is the mass of active electrode materials ( g ), and Δ t is the discharge time ( s ).…”

Section: Methodsmentioning

confidence: 99%

Cu@Fe-Redox Capacitive-Based Metal–Organic Framework Film for a High-Performance Supercapacitor Electrode

et al. 2023

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A metal–organic framework (MOF) is a highly porous material with abundant redox capacitive sites for intercalation/de-intercalation of charges and, hence, is considered promising for electrode materials in supercapacitors. In addition, dopants can introduce defects and alter the electronic structure of the MOF, which can affect its surface reactivity and electrochemical properties. Herein, we report a copper-doped iron-based MOF (Cu@Fe-MOF/NF) thin film obtained via a simple drop-cast route on a 3D-nickel foam (NF) substrate for the supercapacitor application. The as-deposited Cu@Fe-MOF/NF electrodes exhibit a unique micro-sized bipyramidal structure composited with nanoparticles, revealing a high specific capacitance of 420.54 F g−1 at 3 A g−1 which is twice compared to the nano-cuboidal Fe-MOF/NF (210 F g−1). Furthermore, the asymmetric solid-state (ASSSC) supercapacitor device, derived from the assembly of Cu@Fe-MOF/NFǁrGO/NF electrodes, demonstrates superior performance in terms of energy density (44.20 Wh.kg−1) and electrochemical charge–discharge cycling durability with 88% capacitance retention after 5000 cycles. This work, thus, demonstrates a high potentiality of the Cu@Fe-MOF/NF film electrodes in electrochemical energy-storing devices.

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“…If this material is used as a support to composite with other high-performance metal catalysts, the performance of the material will be greatly improved. 36,37 Based on this, we designed to load ruthenium nanoparticles on its surface to improve the HER catalytic performance. Although ruthenium is also one of the platinumgroup precious metal elements, its price is relatively cheap and it has excellent catalytic performance, which has attracted widespread research attention.…”

Section: Sustainablementioning

confidence: 99%

Honeycomb-like hollow carbon loaded with ruthenium nanoparticles as high-performance HER electrocatalysts

Ji,

Teng,

et al. 2024

Sustainable Energy Fuels

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Structural engineering of ruthenium decorated zeolitic imidazole framework nanocomposite for hydrogen evolution reactions and supercapacitors

Cited by 16 publications

References 73 publications

Tunning the Zeolitic Imidazole Framework (ZIF8) through the Wet Chemical Route for the Hydrogen Evolution Reaction

Tunning the Zeolitic Imidazole Framework (ZIF8) through the Wet Chemical Route for the Hydrogen Evolution Reaction

Cu@Fe-Redox Capacitive-Based Metal–Organic Framework Film for a High-Performance Supercapacitor Electrode

Honeycomb-like hollow carbon loaded with ruthenium nanoparticles as high-performance HER electrocatalysts

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