Electrochemical Oxidation of Small Molecules for Energy‐Saving Hydrogen Production

Advanced Energy Materials, Journal Year: 2024, Volume and Issue: 14(30)

Published: May 27, 2024

Abstract Electrochemical water splitting is a promising technique for the production of high‐purity hydrogen. Substituting slow anodic oxygen evolution reaction with an oxidation that thermodynamically more favorable enables energy‐efficient Moreover, this approach facilitates degradation environmental pollutants and synthesis value‐added chemicals through rational selection small molecules as substrates. Strategies small‐molecule electrocatalyst design are critical to electrocatalytic performance, focus on achieving high current density, selectivity, Faradaic efficiency, operational durability. This perspective discusses key factors required further advancement, including technoeconomic analysis, new reactor system design, meeting requirements industrial applications, bridging gap between fundamental research practical product detection separation. aims advance development hybrid electrolysis applications.

Language: Английский

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Synergistic vacancy defects and the surface hydrophobic-to-superhydrophilic wetting engineering in W/S co-doped BiOI for enhanced photocatalytic hydrogen evolution

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 496, P. 154282 - 154282

Published: July 25, 2024

Language: Английский

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Tunable NiSe‐Ni₃Se₂ Heterojunction for Energy‐Efficient Hydrogen Production by Coupling Urea Degradation

Small Methods, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 7, 2025

Abstract Urea‐assisted water splitting is a promising energy‐saving hydrogen (H 2 ) production technology. However, its practical application hindered by the lack of high‐performance bifunctional catalysts for urea oxidation reaction (UOR) and evolution (HER). Herein, heterostructured catalyst comprising highly active NiSe Ni 3 Se , along with conductive graphene‐coated nickel foam skeleton (NiSe‐Ni /GNF) reported. The NiSe‐Ni originates from in situ selenization foam, allowing careful regulation to ratio simply adjusting calcination temperature. Theoretical calculations charge transfer between components can optimize pathways reduce corresponding energy barriers. Accordingly, designed exhibits excellent UOR HER activity stability. Furthermore, /GNF‐based UOR‐HER electrolyzer requires only 1.54 V achieve current density 50 mA cm −2 which lower than many recent reports much 1.83 OER‐HER electrolyzers. Moreover, exhibited negligible cell voltage variation during 28‐h stability test, indicating satisfactory stability, provides new viable paradigm H production.

Language: Английский

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Sub-3 nm Pt3Ni nanoparticles for urea-assisted water splitting

Advanced Composites and Hybrid Materials, Journal Year: 2025, Volume and Issue: 8(2)

Published: Feb. 24, 2025

Language: Английский

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Nickel Hydroxide‐Based Electrocatalysts for Promising Electrochemical Oxidation Reactions: Beyond Water Oxidation

Small, Journal Year: 2024, Volume and Issue: 20(33)

Published: March 20, 2024

Transition metal hydroxides have attracted significant research interest for their energy storage and conversion technique applications. In particular, nickel hydroxide (Ni(OH)

Language: Английский

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Regulating Reconstruction‐Engineered Active Sites for Accelerated Electrocatalytic Conversion of Urea

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(36)

Published: June 14, 2024

Reconstruction-engineered electrocatalysts with enriched high active Ni species for urea oxidation reaction (UOR) have recently become promising candidates energy conversion. However, to inhibit the over-oxidation of brought by valence state Ni, tremendous efforts are devoted obtaining low-value products nitrogen gas avoid toxic nitrite formation, undesirably causing inefficient utilization cycle. Herein, we proposed a mediation engineering strategy significantly boost high-value formation help close loop employment economy. Specifically, platinum-loaded nickel phosphides (Pt-Ni

Language: Английский

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Non-radical activation of peroxymonosulfate by modified activated carbon for efficient degradation of oxytetracycline: Mechanisms and applications

Separation and Purification Technology, Journal Year: 2024, Volume and Issue: 349, P. 127877 - 127877

Published: May 8, 2024

Language: Английский

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Local Charge Modulation Induced the Formation of High‐Valent Nickel Sites for Enhanced Urea Electrolysis

Advanced Energy Materials, Journal Year: 2024, Volume and Issue: 14(41)

Published: Aug. 17, 2024

Abstract Ni‐based electrocatalysts are considered to be significantly promising candidates for electrocatalytic urea oxidation reaction (UOR). However, their UOR activity and stability severely enslaved by the inevitable Ni group self‐oxidation phenomenon. In this study, glassy state NiFe LDH with uniform Cu dopant (Cu‐NiFe LDH) a simple sol–gel strategy is successfully synthesized. When served as catalyst, Cu‐NiFe required 123 mV lower potential at both 10 100 mA cm −2 in comparison conventional anodic OER. It can also operate steadily more than 300 h . The in‐depth investigation reveals that incorporation optimize local electronic structure of species induce high‐valent sites. sites would act active center during proposed energetically favorable route, which directly reacts on without inducing formation NiOOH species, resulting boosted stability.

Language: Английский

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Recent progress in transition metal based catalysts and mechanism analysis for alcohol electrooxidation reactions

Green Chemistry, Journal Year: 2024, Volume and Issue: 26(9), P. 4987 - 5003

Published: Jan. 1, 2024

This article reviews recent advancements in AOR catalysts, emphasizing mechanistic studies through situ characterization and DFT calculations to unravel the structure-performance correlation.

Language: Английский

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Multielectronic synergetic Hf-doped NiFe-LDH/NF for efficient bifunctional electrocatalytic OER/UOR

International Journal of Hydrogen Energy, Journal Year: 2024, Volume and Issue: 82, P. 724 - 732

Published: Aug. 3, 2024

Language: Английский

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