Exploration of metal‐free 2D electrocatalysts toward the oxygen electroreduction

Exploration, Journal Year: 2024, Volume and Issue: 4(4)

Published: Jan. 17, 2024

Abstract The advancement of economical and readily available electrocatalysts for the oxygen reduction reaction (ORR) holds paramount importance in fuel cells metal‐air batteries. Recently, 2D non‐metallic materials have obtained substantial attention as viable alternatives ORR catalysts due to their manifold advantages, encompassing low cost, ample availability, surface‐to‐volume ratio, high conductivity, exceptional durability, competitive activity. augmented performances observed metal‐free typically arise from heteroatom doping, defects, or formation heterostructures. Here, authors delve into realm ORR, pivoting around materials. Initially, merits are explored mechanism is dissected. Subsequently, a comprehensive survey diverse presented, tracing evolutionary journey fundamental concepts pragmatic applications context ORR. Substantial given on exploration various strategies enhancing assessing impact inherent material performance, including electronic properties. Finally, challenges future prospects that lie ahead underscored, they aspire serve efficient electrocatalysts.

Language: Английский

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Insight into the activity of Ni-based thermal catalysts for dry reforming of methane

Journal of Materials Chemistry A, Journal Year: 2024, Volume and Issue: 12(37), P. 24802 - 24838

Published: Jan. 1, 2024

The review summarizes recent research progresses and methods for tuning Ni-based thermocatalysts to improve the activity of dry reforming methane.

Language: Английский

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In@Mn₃O₄ with Rich Interface Low‐Coordination Mn Active Sites for Boosting Electrocatalytic Nitrogen Reduction

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 10, 2025

Abstract Electrocatalytic nitrogen reduction reaction (NRR) is a potential strategy for green synthesis of ammonia. However, the lack efficient catalysts with both high activity and selectivity restricts development electrocatalytic NRR. In this study, simple water‐based redox method used to synthesize core–shell nanoparticle catalyst 2D Mn 3 O 4 as shell core. The rich interface low‐coordination helps provide more active sites At same time, nucleus gives electrons shell, jointly promotes adsorption activation nitrogen, well enhancement NRR activity. Moreover, designed hydrophobicity, which effectively reduces side hydrogen evolution H proton generated from water dissociation, improved. 0.1 m Na 2 SO , ammonia yield In@Mn 89.44 µg h −1 mg cat (−0.9 V vs RHE) maximum Faradaic efficiency 27.01% at −0.7 (vs RHE), superior most reported catalysts. unique structure design low coordination insights regulation nitrogen–water environment rational advanced electrocatalysts.

Language: Английский

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Facing the “Cutting Edge:” Edge Site Engineering on 2D Materials for Electrocatalysis and Photocatalysis

Advanced Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 31, 2025

The utilization of 2D materials as catalysts has garnered significant attention in recent years, primarily due to their exceptional features including high surface area, abundant exposed active sites, and tunable physicochemical properties. unique geometry imparts them with versatile sites for catalysis, basal plane, interlayer, defect, edge sites. Among these, hold particular significance they not only enable the activation inert but also serve platforms engineering achieve enhanced catalytic performance. Here it is comprehensively aimed summarize state-of-the-art advancements on electrocatalysis photocatalysis, applications ranging from water splitting, oxygen reduction, nitrogen reduction CO2 reduction. Additionally, various approaches harnessing modifying are summarized discussed. guidelines rational heterogeneous catalysis provided.

Language: Английский

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Emerging two-dimensional materials for the electrocatalytic nitrogen reduction reaction to yield ammonia

Journal of Materials Chemistry A, Journal Year: 2023, Volume and Issue: 11(42), P. 22590 - 22607

Published: Jan. 1, 2023

We summarize the important progress in electroreduction of N 2 to NH 3 using state-of-the-art two-dimensional (2D) electrocatalysts. Emerging 2D materials that could potentially serve as viable NRR electrocatalysts are presented.

Language: Английский

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Interfacial Engineering Boosting the Activity and Stability of MIL-53(Fe) toward Electrocatalytic Nitrogen Reduction

Langmuir, Journal Year: 2024, Volume and Issue: 40(10), P. 5469 - 5478

Published: March 4, 2024

The electrochemical nitrogen reduction reaction (eNRR) has emerged as a promising strategy for green ammonia synthesis. However, it suffers unsatisfactory performance owing to the low aqueous solubility of N2 in solution, high dissociation energy N≡N, and unavoidable competing hydrogen evolution (HER). Herein, MIL-53(Fe)@TiO2 catalyst is designed synthesized highly efficient eNRR. Relative simple MIL-53(Fe), achieves 2-fold enhancement Faradaic efficiency (FE) with an improved yield rate by 76.5% at −0.1 V versus reversible electrode (RHE). After four cycles electrocatalysis, can maintain good catalytic activity, while MIL-53(Fe) exhibits significant decrease NH3 FE 79.8 82.3%, respectively. Benefiting from synergetic effect between TiO2 composites, Fe3+ ions be greatly stabilized during eNRR process, which hinders deactivation caused ions. Further, charge transfer ability interface composites improved, thus, activity significantly boosted. These findings provide insight into preparation composite electrocatalysts.

Language: Английский

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Novel metal-free holey BC4N nanostructure for enhanced photoelectrocatalytic nitrogen reduction: insight from grand-canonical density functional theory

Science China Materials, Journal Year: 2024, Volume and Issue: 67(4), P. 1192 - 1201

Published: March 5, 2024

Language: Английский

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Constructing Ni4W/WO3/NF with strongly coupled interface for hydrogen evolution in alkaline media

Rare Metals, Journal Year: 2023, Volume and Issue: 42(12), P. 3945 - 3951

Published: Oct. 13, 2023

Language: Английский

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Recent progress in Pd based electrocatalysts for electrochemical nitrogen reduction to ammonia

Journal of Electroanalytical Chemistry, Journal Year: 2023, Volume and Issue: 931, P. 117174 - 117174

Published: Jan. 20, 2023

Language: Английский

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Lignin-derived carbon nanosheets boost electrochemical reductive amination of pyruvate to alanine

iScience, Journal Year: 2023, Volume and Issue: 26(10), P. 107776 - 107776

Published: Aug. 29, 2023

Efficient and sustainable amino acid synthesis is essential for industrial applications. Electrocatalytic reductive amination has emerged as a promising method, but challenges such undesired side reactions low efficiency persist. Herein, we demonstrated lignin-derived catalyst alanine synthesis. Carbon nanosheets (CNSs) were synthesized from lignin via template-assisted method doped with nitrogen sulfur to boost suppress reactions. The resulting N,S-co-doped carbon (NS-CNSs) exhibited outstanding electrochemical performance. It achieved maximum Faradaic of 79.5%, yield exceeding 1,199 μmol h-1 cm-2 on NS-CNS, selectivity above 99.9%. NS-CNS showed excellent durability during long-term electrolysis. Kinetic studies including control experiments theoretical calculations provided further insights into the reaction pathway. Moreover, catalysts potential in upgrading real-world polylactic plastic waste, yielding value-added over 75%.

Language: Английский

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