Sub-nm RuO_x Clusters on Pd Metallene for Synergistically Enhanced Nitrate Electroreduction to Ammonia

ACS Nano, Год журнала: 2023, Номер 17(2), С. 1081 - 1090

Опубликована: Янв. 11, 2023

The electrochemical nitrate reduction to ammonia reaction (NO3RR) has emerged as an appealing route for achieving both wastewater treatment and production. Herein, sub-nm RuOx clusters anchored on a Pd metallene (RuOx/Pd) are reported highly effective NO3RR catalyst, delivering maximum NH3-Faradaic efficiency of 98.6% with corresponding NH3 yield rate 23.5 mg h–1 cm–2 partial current density 296.3 mA at −0.5 V vs RHE. Operando spectroscopic characterizations combined theoretical computations unveil the synergy enhance energetics through mechanism hydrogen spillover hydrogen-bond interactions. In detail, activates NO3– form intermediates, while dissociates H2O generate *H, which spontaneously migrates RuOx/Pd interface via process. Further interactions between spillovered *H intermediates makes desorb from participate in intermediate hydrogenation, contributing enhanced activity NO3–-to-NH3 conversion.

Язык: Английский

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Advances in the Electrocatalytic Hydrogen Evolution Reaction by Metal Nanoclusters‐based Materials

Small, Год журнала: 2022, Номер 18(52)

Опубликована: Окт. 26, 2022

Abstract With the development of renewable energy systems, clean hydrogen is burgeoning as an optimal alternative to fossil fuels, in which its application promising retarding global and environmental crisis. The evolution reaction (HER), capable producing high‐purity rapidly electrocatalytic water splitting, has received much attention. Abundant research about HER been done, focusing on advanced electrocatalyst design with high efficiency robust stability. As potential catalysts, metal nanoclusters (MNCs) have studied extensively. They are composed several a hundred atoms, sizes being comparable Fermi wavelength electrons, that is, < 2.0 nm. Different from atoms/nanoparticles, they exhibit unique catalytic properties due their quantum size effect low‐coordination environment. In this review, activity‐enhancing approaches MNCs applied electrocatalysis mainly summarized. Furthermore, recent progress classified different stabilization strategies, freestanding MNCs, organic, carbon supports, introduced. Finally, current challenges deficiencies these for prospected.

Язык: Английский

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Ruthenium-doped 3D Cu2O nanochains as efficient electrocatalyst towards hydrogen evolution and hydrazine oxidation

Applied Catalysis B Environment and Energy, Год журнала: 2022, Номер 325, С. 122305 - 122305

Опубликована: Дек. 24, 2022

Язык: Английский

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Active-site and interface engineering of cathode materials for aqueous Zn—gas batteries

Nano Research, Год журнала: 2022, Номер 16(2), С. 2325 - 2346

Опубликована: Сен. 27, 2022

Язык: Английский

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Atomically dispersed Co catalyst for electrocatalytic NO reduction to NH3

Chemical Engineering Journal, Год журнала: 2022, Номер 454, С. 140333 - 140333

Опубликована: Ноя. 15, 2022

Язык: Английский

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Single atomic cerium sites anchored on nitrogen-doped hollow carbon spheres for highly selective electroreduction of nitric oxide to ammonia

Journal of Colloid and Interface Science, Год журнала: 2023, Номер 638, С. 650 - 657

Опубликована: Фев. 9, 2023

Язык: Английский

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Applications of Metal–Organic Frameworks and Their Derivatives in Electrochemical CO2 Reduction

Nano-Micro Letters, Год журнала: 2023, Номер 15(1)

Опубликована: Апрель 30, 2023

Abstract Electrochemically reducing CO 2 to more reduced chemical species is a promising way that not only enables the conversion of intermittent energy resources stable fuels, but also helps build closed-loop anthropogenic carbon cycle. Among various electrocatalysts for electrochemical reduction, multifunctional metal–organic frameworks (MOFs) have been employed as highly efficient and selective heterogeneous due their ultrahigh porosity topologically diverse structures. Up now, great progress has achieved in design synthesis active MOF-related catalysts reduction reaction (CO RR), corresponding mechanisms thoroughly studied. In this review, we summarize recent applying MOFs derivatives RR, with focus on strategies electrolyzers. We first discussed different RR products introduced commonly applied electrolyzer configurations current system. Then, an overview several categories (CO, HCOOH, CH 4 , 3 OH, multi-carbon chemicals) generated from or via was discussed. Finally, offer some insights perspectives future development reduction. aim provide new into field further guide research large-scale applications.

Язык: Английский

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Asymmetric Coordination Induces Electron Localization at Ca Sites for Robust CO₂ Electroreduction to CO

Advanced Materials, Год журнала: 2023, Номер 35(21)

Опубликована: Март 16, 2023

Main group single atom catalysts (SACs) are promising for CO2 electroreduction to CO by virtue of their ability in preventing the hydrogen evolution reaction and poisoning. Unfortunately, delocalized orbitals reduce activation *COOH. Herein, an O doping strategy localize electrons on p-orbitals through asymmetric coordination Ca SAC sites (Ca-N3 O) is developed, thus enhancing activation. Theoretical calculations indicate that Ca-N3 improves electron-localization around promotes *COOH formation. X-ray absorption fine spectroscopy shows obtained features: one three N coordinated atoms with as a reactive site. In situ attenuated total reflection infrared proves As result, catalyst exhibits state-of-the-art turnover frequency ≈15 000 per hour H-cell large current density -400 mA cm-2 Faradaic efficiency (FE) ≥ 90% flow cell. Moreover, retain FE above even 30% diluted concentration.

Язык: Английский

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Challenges and strategies towards copper-based catalysts for enhanced electrochemical CO2 reduction to multi-carbon products

Fuel, Год журнала: 2022, Номер 332, С. 126114 - 126114

Опубликована: Окт. 2, 2022

Язык: Английский

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Different distributions of multi-carbon products in CO2 and CO electroreduction under practical reaction conditions

Nature Catalysis, Год журнала: 2023, Номер 6(12), С. 1115 - 1124

Опубликована: Дек. 20, 2023

Язык: Английский

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