Metal-organic frameworks-based single-atom catalysts: From synthesis to sustainable electrocatalytic systems

Marimuthu, Sundaramoorthy; Yabesh, Nesan R.K.; Maduraiveeran, Govindhan

doi:10.1016/j.mtchem.2024.102035

Cited by 2 publications

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“…This modulation aims to optimize the adsorption energy of oxygen species, thereby enhancing the kinetics of the ORR reaction and resulting in increased ORR activity. 26,27 However, stability problems that arose in carbonbased noble metal catalysts would be significantly reduced, thanks to the special qualities of metal oxide, such as strong corrosion resistance, especially in the acidic environment. 28−30 Sathyaseelan et al synthesized sPdNiA using a simple hydrazine-assisted reduction technique.…”

Section: ■ Introductionmentioning

confidence: 99%

“…Strong metal–support interaction, the original notion, is the basis of this promising technique. , The metal–support interaction will modulate the local electronic structure of noble metals, specifically the d-band center, which is correlated with the number of unpaired electrons in the metal. This modulation aims to optimize the adsorption energy of oxygen species, thereby enhancing the kinetics of the ORR reaction and resulting in increased ORR activity. , However, stability problems that arose in carbon-based noble metal catalysts would be significantly reduced, thanks to the special qualities of metal oxide, such as strong corrosion resistance, especially in the acidic environment. − …”

Section: Introductionmentioning

confidence: 99%

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Potent Noble Metal–Nickel Oxide Interaction: A Strategy for Improved Oxygen Reduction Reaction via Engineering the Electronic Structure

Yabesh,

Marimuthu,

Maduraiveeran

2024

J. Phys. Chem. C

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Design of both efficient and durable electrode materials is key for oxygen reduction reaction (ORR) in influencing the efficacy of both fuel cells (FCs) and metal-air batteries (MABs). Here, we demonstrate the uniform dispersion of noble metals like (Au), palladium (Pd), and platinum (Pt) on nickel oxide on nickel electrodes (NM@NiO|Ni) for promoting ORR under alkaline electrolytes through engineering the electronic structures of noble metals as active sites. The NM@NiO|Ni electrodes are fabricated using acid etching followed by the galvanic replacement reaction method. Nickel oxide functions as an appropriate and encouraging support that can intensely interact with noble metals for both high catalytic activity and stability improvement. The Pd@NiO|Ni electrode exhibits prominent electrocatalytic ORR performance with an onset potential (E onset ) of ∼0.98 V [vs. reversible hydrogen electrode (RHE)], reduction potential (E) of ∼0.88 V (vs. RHE), catalytic cathodic current density of ∼−0.125 mA cm −2 at ∼0.88 V (vs. RHE), and mass activity of ∼0.38 Ag −1 in 0.1 M KOH, among the other developed electrodes in this study. The introduction of Pd as a second constituent to the NiO nanostructures enhanced the ORR performance expressively. The synergistic effects of Pd and Ni seem to possess a key impact on both catalytic ORR activity and stability. This strategy for enriching the catalytic active sites and the durability of the electrocatalysts demonstrates great potential for FC and MAB applications.

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Section: ■ Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Potent Noble Metal–Nickel Oxide Interaction: A Strategy for Improved Oxygen Reduction Reaction via Engineering the Electronic Structure

Yabesh,

Marimuthu,

Maduraiveeran

2024

J. Phys. Chem. C

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Transition metal nanomaterial-based electrocatalysts for water and CO2 electrolysis: preparation, catalytic activity, and prospects

Maduraiveeran

2024

Front. Energy Res.

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The production of hydrogen (H2) and multi-carbon fuels through water electrolysis (oxygen evolution reaction (OER)/hydrogen evolution reaction (HER)) and water–CO2 co-electrolysis (OER/CO2 reduction reaction (CO2RR)), respectively, is supposed to be the emergent energy carrier. These electrochemical processes are essential chemical conversion pathways that initiate the changes toward production of renewable energy. This review summarizes the systematic design of earth-abundant transition metal-based nanomaterials and their electrocatalytic activities toward electrochemical energy conversion reactions such as OER, HER, and CO2RR. The primary focus is on fabricating highly effective, low-cost, and advanced transition metal-based nanostructures for both the OER/HER and OER/CO2RR systems. Developing synthetic strategies for surface morphology-controlled nanostructured electrocatalysts, engineering the electrode surface, enhancing the electrocatalytic activity, understanding the relationship between intrinsic catalytic activity and preparation approaches or precursor choices, and exploring the reaction mechanism are focused on. Furthermore, the current challenges, figure-of-merit, and prospects of transition metal-based nanomaterials and their electrocatalytic activities toward water electrolysis and water–CO2 co-electrolysis are described. This study may open new opportunities to develop shape-controlled and high-performance electrocatalysts for electrochemical energy conversion and storage reactions.

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Metal-organic frameworks-based single-atom catalysts: From synthesis to sustainable electrocatalytic systems

Cited by 2 publications

References 189 publications

Potent Noble Metal–Nickel Oxide Interaction: A Strategy for Improved Oxygen Reduction Reaction via Engineering the Electronic Structure

Potent Noble Metal–Nickel Oxide Interaction: A Strategy for Improved Oxygen Reduction Reaction via Engineering the Electronic Structure

Transition metal nanomaterial-based electrocatalysts for water and CO2 electrolysis: preparation, catalytic activity, and prospects

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