Recent advances and future perspectives in MOF-derived single-atom catalysts and their application: a review

Journal of Materials Chemistry A, Journal Year: 2023, Volume and Issue: 11(7), P. 3315 - 3363

Published: Jan. 1, 2023

This article discusses the relationship between single-atom sites and catalytic mechanism of functional MOFs which is related to coordination environment metal ions, also summarizes research progress MOF-derived SACs in recent years.

Language: Английский

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Mn-Co dual sites relay activation of peroxymonosulfate for accelerated decontamination

Applied Catalysis B Environment and Energy, Journal Year: 2023, Volume and Issue: 330, P. 122656 - 122656

Published: March 21, 2023

Language: Английский

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Optimizing electronic synergy of atomically dispersed dual-metal Ni–N₄ and Fe–N₄ sites with adjacent Fe nanoclusters for high-efficiency oxygen electrocatalysis

Energy & Environmental Science, Journal Year: 2023, Volume and Issue: 17(2), P. 704 - 716

Published: Dec. 7, 2023

The electronic synergy of Fe nanoclusters and Ni/Fe–N 4 single-atomic sites optimizes the adsorption/desorption oxygenated intermediates reduces energy barrier oxygen electrocatalysis, boosting Zn–air batteries performance.

Language: Английский

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A replacement strategy for regulating local environment of single-atom Co-SxN4−x catalysts to facilitate CO2 electroreduction

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: Jan. 10, 2024

Abstract The performances of single-atom catalysts are governed by their local coordination environments. Here, a thermal replacement strategy is developed for the synthesis with precisely controlled and adjustable A series Co-S x N 4−x ( = 0, 1, 2, 3) successfully synthesized thermally replacing coordinated S at elevated temperature, volcano relationship between coordinations catalytic toward electrochemical CO 2 reduction observed. 1 3 catalyst has balanced COOH*and CO* bindings, thus locates apex highest performance to CO, maximum Faradaic efficiency 98 ± 1.8% high turnover frequency 4564 h −1 an overpotential 410 mV tested in H-cell -saturated 0.5 M KHCO , surpassing most reported catalysts. This work provides rational approach control environment catalysts, which important further fine-tuning performance.

Language: Английский

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Metal–Organic Frameworks-Mediated Assembly of Gold Nanoclusters for Sensing Applications

Journal of Analysis and Testing, Journal Year: 2022, Volume and Issue: 6(2), P. 163 - 177

Published: May 7, 2022

Language: Английский

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Atomically Dispersed Fe Sites Regulated by Adjacent Single Co Atoms Anchored on N‐P Co‐Doped Carbon Structures for Highly Efficient Oxygen Reduction Reaction

Advanced Materials, Journal Year: 2023, Volume and Issue: 36(17)

Published: July 27, 2023

Abstract Manipulating the coordination environment and electron distribution for heterogeneous catalysts at atomic level is an effective strategy to improve electrocatalytic performance but remains challenging. Herein, atomically dispersed Fe Co anchored on nitrogen, phosphorus co‐doped carbon hollow nanorod structures (FeCo‐NPC) are rationally designed synthesized. The as‐prepared FeCo‐NPC catalyst exhibits significantly boosted kinetics greatly upshifts half‐wave potential oxygen reduction reaction. Furthermore, when utilized as cathode, also displays excellent zinc‐air battery performance. Experimental theoretical results demonstrate that introduction of single atoms with Co‐N/P around isolated induces asymmetric distribution, resulting in suitable adsorption/desorption ability intermediates optimized reaction barrier, thereby improving activity.

Language: Английский

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Epoxy‐rich Fe Single Atom Sites Boost Oxygen Reduction Electrocatalysis

Angewandte Chemie International Edition, Journal Year: 2023, Volume and Issue: 62(36)

Published: July 15, 2023

Electrocatalysts for highly efficient oxygen reduction reaction (ORR) are crucial energy conversion and storage devices. Single-atom catalysts with maximized metal utilization altered electronic structure the most promising alternatives to replace current benchmark precious metals. However, atomic level understanding of functional role each species at anchoring sites is still unclear poorly elucidated. Herein, we report Fe single atom sulfur groups near atomically dispersed centers (Fe1/NSOC) ORR. The Fe1/NSOC delivers a half-wave potential 0.92 V vs. RHE, which much better than those commercial Pt/C (0.88 V), atoms on N-doped carbon (Fe1/NC, 0.89 V) reported nonprecious catalysts. spectroscopic measurements reveal that presence group induces formation epoxy FeN4S2 centers, not only modulate but also participate catalytic process improve kinetics. density theory calculations demonstrate existence engineer charges reactive center facilitate reductive release OH* (rate-limiting step), thus boosting overall efficiency.

Language: Английский

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Asymmetric N, P‐Coordinated Single‐Atomic Fe Sites with Fe₂P Nanoclusters/Nanoparticles on Porous Carbon Nanosheets for Highly Efficient Oxygen Electroreduction

Advanced Energy Materials, Journal Year: 2023, Volume and Issue: 13(32)

Published: July 10, 2023

Abstract Disrupting the symmetrical electron distribution of single‐atomic Fe sites is proposed as an effective strategy for improving intrinsic activity in oxygen reduction reaction (ORR). Herein asymmetric N, P‐coordinated with 2 P nanoclusters/nanoparticles on porous carbon nanosheets (FePNC) are constructed by a soft‐template self‐sacrificing pyrolysis. The synchrotron X‐ray absorption spectroscopy confirms coexistence FeN 3 1 moieties coordination atom three nitrogen atoms and one phosphorus atom, small amount nanoclusters/nanoparticles. Benefiting from unique electronic geometric configurations, resultant FePNC catalyst exhibits excellent ORR half‐wave potential 0.76 V (0.5 m H SO 4 ) 0.90 (0.1 KOH), good Zn–air battery performance. Theoretical analysis reveals that synergistic effect nanoclusters induces asymmetrical redistribution thus optimize strength toward intermediates, which contribute to improved activity.

Language: Английский

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Advances on Axial Coordination Design of Single-Atom Catalysts for Energy Electrocatalysis: A Review

Nano-Micro Letters, Journal Year: 2023, Volume and Issue: 15(1)

Published: Oct. 13, 2023

Abstract Single-atom catalysts (SACs) have garnered increasingly growing attention in renewable energy scenarios, especially electrocatalysis due to their unique high efficiency of atom utilization and flexible electronic structure adjustability. The intensive efforts towards the rational design synthesis SACs with versatile local configurations significantly accelerated development efficient sustainable electrocatalysts for a wide range electrochemical applications. As an emergent coordination avenue, intentionally breaking planar symmetry by adding ligands axial direction metal single atoms offers novel approach tuning both geometric structures, thereby enhancing electrocatalytic performance at active sites. In this review, we briefly outline burgeoning research topic axially coordinated provide comprehensive summary recent advances synthetic strategies Besides, challenges outlooks field also been emphasized. present review provides in-depth understanding SACs, which could bring new perspectives solutions fine regulation structures catering high-performing electrocatalysis.

Language: Английский

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Single atom catalysts for degradation of antibiotics from aqueous environments by advanced oxidation processes: A review

Journal of Cleaner Production, Journal Year: 2023, Volume and Issue: 423, P. 138688 - 138688

Published: Sept. 7, 2023

Language: Английский

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