Bifunctional PdPt bimetallenes for formate oxidation‐boosted water electrolysis

Carbon Energy, Journal Year: 2023, Volume and Issue: 5(12)

Published: April 4, 2023

Abstract Small‐molecule electrooxidation‐boosted water electrolysis (WE) is an energy‐saving method for hydrogen (H 2 ) production. Herein, PdPt bimetallenes (PdPt BMLs) are obtained through the simple galvanic replacement reaction. BMLs reveal 2.93‐fold enhancement in intrinsic electroactivity and 4.53‐fold mass formate oxidation reaction (FOR) with respect to Pd metallenes (Pd MLs) at 0.50 V potential due synergistic effect. Meanwhile, introduction of Pt atoms also considerably increases evolution (HER) MLs alkaline medium, which even exceeds that use commercial nanocrystals. Inspired by outstanding FOR HER bifunctional BMLs, a two‐electrode FOR‐boosted WE system (FOR‐WE) constructed using as cathode anode. The FOR‐WE only requires operational voltage 0.31 achieve H production, 1.48 lower than (ca. 1.79 V) traditional system.

Language: Английский

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CeO2 as an “electron pump” to boost the performance of Co4N in electrocatalytic hydrogen evolution, oxygen evolution and biomass oxidation valorization

Applied Catalysis B Environment and Energy, Journal Year: 2023, Volume and Issue: 325, P. 122364 - 122364

Published: Jan. 3, 2023

Language: Английский

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Doped Mn Enhanced NiS Electrooxidation Performance of HMF into FDCA at Industrial‐Level Current Density

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(24)

Published: March 13, 2023

Abstract Electrooxidation of 5‐hydroxymethylfurfural (HMF) into 2,5‐furandicarboxylic acid (FDCA) is a highly promising approach for producing value‐added chemicals from biomass. However, developing efficient electrocatalysts HMF oxidation (HMFOR) with high current density in large‐scale productions remains challenge. Herein, it demonstrated that the Mn‐doped NiS nanosheet grown directly on 3D graphite felt (GF) substrates can efficiently perform electrooxidation FDCA at industrial‐level (500 mA cm −2 ) H‐cell. The Mn 0.2 NiS/GF exhibits excellent HMFOR performance selectivity (98.3%), yield (97.6%), faradaic efficiency (94.2%), and robust stability (10 cycles). Especially, production rate up to 4.56 g h −1 be achieved, superior those reported literatures. Furthermore, by scaling electrode area assembling continuous‐flow electrolyzer, 44.32 achieved. activity attributed incorporation material, theoretical calculation results indicate Ni as both adsorption sites oxidation, thereby effectively facilitate electro‐oxidation performance. This work provides strategy potential industrial‐grade large density.

Language: Английский

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A review on photo-, electro- and photoelectro- catalytic strategies for selective oxidation of alcohols

Journal of Energy Chemistry, Journal Year: 2022, Volume and Issue: 77, P. 80 - 118

Published: Nov. 1, 2022

Language: Английский

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Advances in Selective Electrochemical Oxidation of 5‐Hydroxymethylfurfural to Produce High‐Value Chemicals

Advanced Science, Journal Year: 2022, Volume and Issue: 10(4)

Published: Dec. 8, 2022

The conversion of biomass is a favorable alternative to the fossil energy route solve crisis and environmental pollution. As one most versatile platform compounds, 5-hydroxymethylfural (HMF) can be transformed various value-added chemicals via electrolysis combining with renewable energy. Here, recent advances in electrochemical oxidation HMF, from reaction mechanism reactor design are reviewed. First, pathway summarized systematically. Second, parameters easy ignored emphasized discussed. Then, electrocatalysts reviewed comprehensively for different products reactors introduced. Finally, future efforts on exploring mechanism, electrocatalysts, prospected. This review provides deeper understanding electrocatalyst reactor, which expected promote economical efficient industrial applications.

Language: Английский

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Electrochemical hydrogen production: sustainable hydrogen economy

Green Chemistry, Journal Year: 2023, Volume and Issue: 25(23), P. 9543 - 9573

Published: Jan. 1, 2023

The development of sustainable energy technologies has received considerable attention to meet increasing global demands and realise organisational goals ( e.g. , United Nations, the Paris Agreement) carbon neutrality.

Language: Английский

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Coupled and decoupled electrochemical water splitting for boosting hydrogen evolution: A review and perspective

Coordination Chemistry Reviews, Journal Year: 2024, Volume and Issue: 510, P. 215837 - 215837

Published: April 9, 2024

Language: Английский

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The pivot to achieve high current density for biomass electrooxidation: Accelerating the reduction of Ni3+ to Ni2+

Applied Catalysis B Environment and Energy, Journal Year: 2023, Volume and Issue: 330, P. 122590 - 122590

Published: March 6, 2023

Language: Английский

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Boosting the Electrochemical 5‐Hydroxymethylfurfural Oxidation by Balancing the Competitive Adsorption of Organic and OH⁻ over Controllable Reconstructed Ni₃S₂/NiO_x

Advanced Materials, Journal Year: 2023, Volume and Issue: 35(45)

Published: July 20, 2023

The electrocatalytic oxidation of 5-hydroxymethylfurfural (HMF) is a promising method for the efficient production biomass-derived high-value-added chemicals. However, its practical application limited by: 1) low activity and selectivity caused by competitive adsorption HMF OH- 2) operational stability uncontrollable reconstruction catalyst. To overcome these limitations, series Ni3 S2 /NiOx -n catalysts with controllable compositions well-defined structures are synthesized using novel in situ controlled surface strategy. behavior can be continuously adjusted varying ratio NiOx to on surface, as indicated characterizations, contact angle analysis, theoretical simulations. Owing balanced , optimized -15 catalyst exhibited remarkable performance, current density reaching 366 mA cm-2 at 1.5 VRHE Faradaic efficiency product, 2,5-furanedicarboxylic acid, 98%. Moreover, exhibits excellent durability, structure remaining stable over 100 h operation. This study provides new route design construction value-added biomass conversion offers insights into enhancing catalytic performance balancing adsorption.

Language: Английский

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Electrocatalytic oxidation of 5‐hydroxymethylfurfural for sustainable 2,5‐furandicarboxylic acid production—From mechanism to catalysts design

SusMat, Journal Year: 2023, Volume and Issue: 3(1), P. 21 - 43

Published: Jan. 16, 2023

Abstract Catalytic conversion of biomass‐based platform chemicals is one the significant approaches to utilize renewable biomass resources. 2,5‐Furandicarboxylic acid (FDCA), obtained by an electrocatalytic oxidation 5‐hydroxymethylfurfural (HMF), has attracted extensive attention due potential replacing terephthalic synthesize high‐performance polymeric materials for commercialization. In present work, pH‐dependent reaction pathways and factors influencing degree functional group are first discussed. Then mechanism HMF further elucidated using representative examples. addition, emerging catalyst design strategies (defects, interface engineering) used in generalized, structure–activity relationships between abovementioned catalysts performance analyzed. Furthermore, cathode pairing reactions, such as hydrogen evolution reaction, CO 2 reduction (CO RR), oxygen thermodynamically favorable organic reactions lower cell voltage electrolysis system, Finally, challenges prospects electrochemical FDCA presented, focusing on deeply investigated mechanism, coupling reactor design, downstream product separation/purification.

Language: Английский

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