Advances in MOFs and their derivatives for non‑noble metal electrocatalysts in water splitting

Gao, Guoliang; Chen, Xueli; Han, Lu; Zhu, Guang; Jia, Jin; Cabot, Andreu; Sun, Zixu

doi:10.1016/j.ccr.2023.215639

Cited by 27 publications

(5 citation statements)

References 233 publications

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“…Large-surface-area-supports are needed to enable a high dispersion of the active phase. In this direction, the large surface area and tunable structure of metal–organic frameworks (MOFs) offer an ideal architecture to support catalytic active centers. − Moreover, the metal nodes and aromatic linkers of MOFs can modify electronic energy levels through synergistic interaction between the different elements and π–π forces, − thereby potentially enhancing the stability and activity of the active centers. Besides dispersing the active phase, supports play a strong role in binding the reactant molecule or its intermediates.…”

Section: Introductionmentioning

confidence: 99%

Enhanced Electrochemical Hydrogenation of Benzaldehyde to Benzyl Alcohol on Pd@Ni-MOF by Modifying the Adsorption Configuration

Gong,

Zhang,

et al. 2024

ACS Appl. Mater. Interfaces

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Electrocatalytic hydrogenation (ECH) approaches under ambient temperature and pressure offer significant potential advantages over thermal hydrogenation processes but require highly active and efficient hydrogenation electrocatalysts. The performance of such hydrogenation electrocatalysts strongly depends not only on the active phase but also on the architecture and surface chemistry of the support material. Herein, Pd nanoparticles supported on a nickel metal−organic framework (MOF), Ni-MOF-74, are prepared, and their activity toward the ECH of benzaldehyde (BZH) in a 3 M acetate (pH 5.2) aqueous electrolyte is explored. An outstanding ECH rate up to 283 μmol cm −2 h −1 with a Faradaic efficiency (FE) of 76% is reached. Besides, higher FEs of up to 96% are achieved using a step-function voltage. Materials Studio and density functional theory calculations show these outstanding performances to be associated with the Ni-MOF support that promotes H-bond formation, facilitates water desorption, and induces favorable tilted BZH adsorption on the surface of the Pd nanoparticles. In this configuration, BZH is bonded to the Pd surface by the carbonyl group rather than through the aromatic ring, thus reducing the energy barriers of the elemental reaction steps and increasing the overall reaction efficiency.

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Section: Introductionmentioning

confidence: 99%

Enhanced Electrochemical Hydrogenation of Benzaldehyde to Benzyl Alcohol on Pd@Ni-MOF by Modifying the Adsorption Configuration

Gong,

Zhang,

et al. 2024

ACS Appl. Mater. Interfaces

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“…One of the key processes in this field is the electrolysis of water, where the hydrogen evolution reaction (HER) at the cathode is highly regarded due to its high energy density and clean attributes [4,5]. Conversely, the oxygen evolution reaction (OER) at the anode, with a substantial thermodynamic potential (1.23 V vs. RHE), impedes multiple proton-electron transfer kinetics and consumes over 80% of the electricity used in Nanomaterials 2024, 14, 1005 2 of 12 water electrolysis.…”

Section: Introductionmentioning

confidence: 99%

Electrocatalytic Oxidation of Benzaldehyde on Gold Nanoparticles Supported on Titanium Dioxide

Gong,

Jin,

Zhao

et al. 2024

Nanomaterials

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The electrooxidation of organic compounds offers a promising strategy for producing value-added chemicals through environmentally sustainable processes. A key challenge in this field is the development of electrocatalysts that are both effective and durable. In this study, we grow gold nanoparticles (Au NPs) on the surface of various phases of titanium dioxide (TiO2) as highly effective electrooxidation catalysts. Subsequently, the samples are tested for the oxidation of benzaldehyde (BZH) to benzoic acid (BZA) coupled with a hydrogen evolution reaction (HER). We observe the support containing a combination of rutile and anatase phases to provide the highest activity. The excellent electrooxidation performance of this Au-TiO2 sample is correlated with its mixed-phase composition, large surface area, high oxygen vacancy content, and the presence of Lewis acid active sites on its surface. This catalyst demonstrates an overpotential of 0.467 V at 10 mA cm−2 in a 1 M KOH solution containing 20 mM BZH, and 0.387 V in 100 mM BZH, well below the oxygen evolution reaction (OER) overpotential. The electrooxidation of BZH not only serves as OER alternative in applications such as electrochemical hydrogen evolution, enhancing energy efficiency, but simultaneously allows for the generation of high-value byproducts such as BZA.

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“…Metal–organic frameworks (MOFs) have garnered significant interest in the realm of high-energy LMBs due to their classification as porous crystal materials with customizable pores and high specific surface area. These characteristics enable MOFs to serve as stable shuttle channels for electrons and lithium ions, positioning them as promising candidates for advancement in electrochemical research. , In contrast to COFs, MOFs consist of metal nodes and organic linkers capable of connecting organic ligands and inorganic metal centers such as metal ions or metal clusters. Nevertheless, the expense of MOFs is significantly elevated by the procurement of metal ion sources, and a substantial quantity of solvent is typically necessary for the amalgamation of metal ions and organic ligands, rendering industrial scale-up and practical utilization in LMBs unfeasible.…”

Section: Introductionmentioning

confidence: 99%

Covalent Organic Framework-Based Materials for Advanced Lithium Metal Batteries

Xue,

Sun,

Sun

et al. 2024

ACS Nano

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Advances in MOFs and their derivatives for non‑noble metal electrocatalysts in water splitting

Cited by 27 publications

References 233 publications

Enhanced Electrochemical Hydrogenation of Benzaldehyde to Benzyl Alcohol on Pd@Ni-MOF by Modifying the Adsorption Configuration

Enhanced Electrochemical Hydrogenation of Benzaldehyde to Benzyl Alcohol on Pd@Ni-MOF by Modifying the Adsorption Configuration

Electrocatalytic Oxidation of Benzaldehyde on Gold Nanoparticles Supported on Titanium Dioxide

Covalent Organic Framework-Based Materials for Advanced Lithium Metal Batteries

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