Oxygen-Bridged Long-Range Dual Sites Boost Ethanol Electrooxidation by Facilitating C–C Bond Cleavage

Nano Letters, Journal Year: 2023, Volume and Issue: 23(17), P. 8194 - 8202

Published: Aug. 25, 2023

Optimizing the interatomic distance of dual sites to realize C-C bond breaking ethanol is critical for commercialization direct fuel cells. Herein, concept holding long-range proposed weaken reaction barrier cleavage during oxidation (EOR). The obtained Rh-O-Pt achieve a high current density 7.43 mA/cm2 toward EOR, which 13.3 times that Pt/C, as well remarkable stability. Electrochemical in situ Fourier transform infrared spectroscopy indicates can increase selectivity C1 products and suppress generation CO intermediate. Theoretical calculations further disclose redistribution surface-localized electron around promote -OH, accelerating cleavage. This work provides promising strategy designing oxygen-bridged tune activity complicated catalytic reactions.

Language: Английский

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Asymmetric Coordination Environment Engineering of Atomic Catalysts for CO2 Reduction

Nanomaterials, Journal Year: 2023, Volume and Issue: 13(2), P. 309 - 309

Published: Jan. 11, 2023

Single-atom catalysts (SACs) have emerged as well-known in renewable energy storage and conversion systems. Several supports been developed for stabilizing single-atom catalytic sites, e.g., organic-, metal-, carbonaceous matrices. Noticeably, the metal species their local atomic coordination environments a strong influence on electrocatalytic capabilities of atom active centers. In particular, asymmetric electrocatalysts exhibit unique properties an unexpected carbon dioxide reduction reaction (CO2RR) performance different from those traditional metal-N4 sites. This review summarizes recent development sites CO2RR with emphasis structure regulation strategies effects performance. Ultimately, several scientific possibilities are proffered aim further expanding deepening advancement CO2RR.

Language: Английский

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Strategies Toward High Selectivity, Activity, and Stability of Single‐Atom Catalysts

Small, Journal Year: 2024, Volume and Issue: 20(22)

Published: Jan. 6, 2024

Single-atom catalysts (SACs) hold immense promise in facilitating the rational use of metal resources and achieving atomic economy due to their exceptional atom-utilization efficiency distinct characteristics. Despite growing interest SACs, only limited reviews have holistically summarized advancements centering on performance metrics. In this review, first, a thorough overview research progress SACs is presented from perspective strategies, advancements, intriguing approaches employed enhance critical attributes are discussed. Subsequently, comprehensive summary analysis electrochemical applications provided, with particular focus efficacy oxygen reduction reaction , evolution reaction, hydrogen CO

Language: Английский

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Palladium‐Boride Nanoflowers with Controllable Boron Content for Formic Acid Electrooxidation

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: April 2, 2024

Abstract The rational design of the electronic structure and elemental compositions anode electrocatalysts for formic acid electrooxidation reaction (FAOR) is paramount realizing high‐performance direct fuel cells. Herein, palladium‐boride nanoflowers (Pd‐B NFs) with controllable boron content are rationally designed via a simple wet chemical reduction method, utilizing Pd II ‐dimethylglyoxime as precursor NaBH 4 both reductant source. Pd‐B NFs can be regulated through manipulation time, accompanying crystal phase transition from face‐centered cubic to hexagonal close‐packed within parent lattice. obtained exhibit increased FAOR mass specific activity increasing content, showcasing remarkable inherent stability anti‐poisoning capability compare commercial platinum (Pt) nanocrystals. Notably, sample reacted 12 h reveals high (31.5 A m −2 ), which approximately two times higher than Density functional theory calculations disclose that d‐sp orbital hybridization between B modifies surface d ‐band properties Pd, thereby optimizing adsorption key intermediates facilitating kinetics on surface. This study paves way toward utilization metal boride‐based materials synthesis methods various electrocatalysis applications.

Language: Английский

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Insights into the pH effect on hydrogen electrocatalysis

Chemical Society Reviews, Journal Year: 2024, Volume and Issue: unknown

Published: Jan. 1, 2024

This review systematically provides various insights into the pH effect on hydrogen electrocatalysis, and thus providing a reference for future development of electrocatalysis based these insights.

Language: Английский

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