Can hydrogen anion be a possible intermediate of the hydrogen electrode reaction?

Huang, Jun; Attard, Gary Anthony

doi:10.1016/j.jelechem.2021.115150

Cited by 3 publications

(3 citation statements)

References 39 publications

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“…Indeed, Attard et al claimed that the formation of hydride on Pt (i.e., Fig. 4a) is thermodynamically unfavorable in aqueous solutions, further supporting the above analysis [49]. The rate determining step of this NADH to NAD + conversion is therefore the HER, as opposed to NADH adsorption/activated or NAD + desorption.…”

Section: Nadh H Nad Hsupporting

confidence: 52%

Oxide-supported metal catalysts for anaerobic NAD+ regeneration with concurrent hydrogen production

Burnett

Macias

et al. 2024

Chinese Chemical Letters

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Section: Nadh H Nad Hsupporting

confidence: 52%

Oxide-supported metal catalysts for anaerobic NAD+ regeneration with concurrent hydrogen production

Burnett

Macias

et al. 2024

Chinese Chemical Letters

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“…Traditional electrochemical techniques afford deep insights into the kinetics of catalytic reactions while molecular information about the species is lacking 24 – 26 . Spectroscopic techniques can provide molecular information about the species 27 – 29 .…”

Section: Introductionmentioning

confidence: 99%

Revealing the role of interfacial water and key intermediates at ruthenium surfaces in the alkaline hydrogen evolution reaction

Chen,

Wang,

et al. 2023

Nat Commun

145

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Ruthenium exhibits comparable or even better alkaline hydrogen evolution reaction activity than platinum, however, the mechanistic aspects are yet to be settled, which are elucidated by combining in situ Raman spectroscopy and theoretical calculations herein. We simultaneously capture dynamic spectral evidence of Ru surfaces, interfacial water, *H and *OH intermediates. Ru surfaces exist in different valence states in the reaction potential range, dissociating interfacial water differently and generating two distinct *H, resulting in different activities. The local cation tuning effect of hydrated Na+ ion water and the large work function of high-valence Ru(n+) surfaces promote interfacial water dissociation. Moreover, compared to low-valence Ru(0) surfaces, high-valence Ru(n+) surfaces have more moderate adsorption energies for interfacial water, *H, and *OH. They, therefore, facilitate the activity. Our findings demonstrate the regulation of valence state on interfacial water, intermediates, and finally the catalytic activity, which provide guidelines for the rational design of high-efficiency catalysts.

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“…Generally speaking, any path includes the Volmer reaction, which is the adsorption process of H atom on the surface of the catalyst. − The CdS becomes more electron-deficient due to the presence of Pt. The electron-deficient CdS further optimizes the adsorption and desorption of H on S by weakening the adsorption strength between the positively charged H atom and the negatively charged S atom, so accelerating the HER process.…”

mentioning

confidence: 99%

Direct S–H Evidence Revealing the Photo-electrocatalytic Hydrogen Evolution Reaction Mechanism on CdS Using Surface-Enhanced Raman Spectroscopy

Huang

Wang

Yang

et al. 2023

J. Phys. Chem. Lett.

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Photoelectrocatalytic water splitting using metal sulfides is a promising method for green hydrogen production. However, in situ probing of the hydrogen evolution reaction (HER) on sulfides with excellent performance remains a challenge. Here, we construct Au@ CdS core−shell nanoparticles to study the HER on CdS, a typical HER catalyst, by surfaceenhanced Raman spectroscopy (SERS) using a "borrowing" strategy. We directly capture the spectroscopic evidence of S−H intermediate under HER condition, further verified by isotopic experiments. Moreover, the population of S−H intermediates is improved by injecting charge carriers through light illumination and the S−H bond is weakened by introducing Pt to form a Au@Pt@CdS structure to change the interfacial electronic structure, both of them resulting in significant HER performance improvement. These findings can deepen the understanding of the HER mechanism and offer strategies for designing of cost-effective HER catalyst with high performance.

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Can hydrogen anion be a possible intermediate of the hydrogen electrode reaction?

Cited by 3 publications

References 39 publications

Oxide-supported metal catalysts for anaerobic NAD+ regeneration with concurrent hydrogen production

Oxide-supported metal catalysts for anaerobic NAD+ regeneration with concurrent hydrogen production

Revealing the role of interfacial water and key intermediates at ruthenium surfaces in the alkaline hydrogen evolution reaction

Direct S–H Evidence Revealing the Photo-electrocatalytic Hydrogen Evolution Reaction Mechanism on CdS Using Surface-Enhanced Raman Spectroscopy

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