Recent advances of single-atom catalysts in CO₂conversion

Energy & Environmental Science, Год журнала: 2023, Номер 16(7), С. 2759 - 2803

Опубликована: Янв. 1, 2023

The catalytic transformation of CO 2 into valuable fuels/chemicals is a promising and economically profitable process because it offers an alternative toward fossil feedstocks the benefit transforming cycling on scale-up.

Язык: Английский

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Energy management strategies, control systems, and artificial intelligence-based algorithms development for hydrogen fuel cell-powered vehicles: A review

International Journal of Hydrogen Energy, Год журнала: 2024, Номер 61, С. 1380 - 1404

Опубликована: Март 9, 2024

Язык: Английский

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

Nano-Micro Letters, Год журнала: 2023, Номер 15(1)

Опубликована: Окт. 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.

Язык: Английский

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Boosting CO₂ Electroreduction over a Covalent Organic Framework in the Presence of Oxygen

Angewandte Chemie International Edition, Год журнала: 2024, Номер 63(14)

Опубликована: Фев. 7, 2024

Herein, we propose an oxygen-containing species coordination strategy to boost CO

Язык: Английский

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Electrochemical CO2 reduction coupled with alternative oxidation reactions: Electrocatalysts, electrolytes, and electrolyzers

Applied Catalysis B Environment and Energy, Год журнала: 2023, Номер 341, С. 123291 - 123291

Опубликована: Сен. 16, 2023

Язык: Английский

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Construction of Fe Nanoclusters/Nanoparticles to Engineer FeN₄ Sites on Multichannel Porous Carbon Fibers for Boosting Oxygen Reduction Reaction

Advanced Functional Materials, Год журнала: 2024, Номер 34(23)

Опубликована: Янв. 15, 2024

Abstract Fe–N–C catalysts are emerging as promising alternatives to Pt‐based for the oxygen reduction reaction (ORR), while they still suffer from sluggish kinetics due discontented binding affinity between Fe‐N 4 sites and oxygen‐containing intermediates, unsatisfactory stability. Herein, a flexible multichannel carbon fiber membrane immobilized with atomically dispersed neighboring Fe nanoclusters/nanoparticles (FeN ‐Fe NCP @MCF) is synthesized. The optimized geometric electronic structures of atomic brought by adjacent hierarchically porous structure matrix endow FeN @MCF outstanding ORR activity stability, considerably outperforming its counterpart only commercial Pt/C catalyst. Liquid solid‐state zinc–air batteries employing both exhibit durability. Theoretical calculation reveals that nanoclusters can trigger remarkable electron redistribution modulate hybridization central 3 d O 2 p orbitals, facilitating activation molecules optimizing adsorption capacity intermediates on sites, thus accelerating kinetic. This work offers an effective approach constructing coupling have single atoms coexisting efficient catalysis.

Язык: Английский

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Materials Containing Single‐, Di‐, Tri‐, and Multi‐Metal Atoms Bonded to C, N, S, P, B, and O Species as Advanced Catalysts for Energy, Sensor, and Biomedical Applications

Advanced Science, Год журнала: 2024, Номер 11(33)

Опубликована: Июль 1, 2024

Abstract Modifying the coordination or local environments of single‐, di‐, tri‐, and multi‐metal atom (SMA/DMA/TMA/MMA)‐based materials is one best strategies for increasing catalytic activities, selectivity, long‐term durability these materials. Advanced sheet supported by metal atom‐based have become a critical topic in fields renewable energy conversion systems, storage devices, sensors, biomedicine owing to maximum utilization efficiency, precisely located centers, specific electron configurations, unique reactivity, precise chemical tunability. Several offer excellent support are attractive applications energy, medical research, such as oxygen reduction, production, hydrogen generation, fuel selective detection, enzymatic reactions. The strong metal–metal metal–carbon with metal–heteroatom (i.e., N, S, P, B, O) bonds stabilize optimize electronic structures atoms due interfacial interactions, yielding activities. These provide models understanding fundamental problems multistep This review summarizes substrate structure‐activity relationship different active sites based on experimental theoretical data. Additionally, new synthesis procedures, physicochemical characterizations, biomedical discussed. Finally, remaining challenges developing efficient SMA/DMA/TMA/MMA‐based presented.

Язык: Английский

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Tailoring First Coordination Sphere of Dual‐Metal Atom Sites Boosts Oxygen Reduction and Evolution Activities

Advanced Functional Materials, Год журнала: 2024, Номер 34(28)

Опубликована: Фев. 24, 2024

Abstract It is important to tune the coordination configuration of dual‐atom catalyst (DAC), especially in first sphere, render high intrinsic catalytic activities for oxygen reduction/evolution reactions (ORR/OER). Herein, a type atomically dispersed and boron‐coordinated DAC structure, namely, FeN 4 B‐NiN B dual sites, reported. In this incorporation boron into sphere /NiN atomic sites regulates its geometry electronic structure by forming “Fe‐B‐N” “Ni‐B‐N” bridges. The exhibits much enhanced ORR OER property compared ‐NiN counterparts. Density functional theory calculations reveal that boron‐induced charge transfer asymmetric distributions central Fe/Ni atoms optimize adsorption desorption behavior ORR/OER intermediates reduce activation energy potential‐determining step. Zinc‐air batteries employing cathode exhibit maximum power density (236.9 mW cm −2 ) stable cyclability up 1100 h. result illustrates pivotal role first‐coordination DACs tuning electrochemical conversion storage activities.

Язык: Английский

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Out-of-plane coordination of iridium single atoms with organic molecules and cobalt–iron hydroxides to boost oxygen evolution reaction

Nature Nanotechnology, Год журнала: 2024, Номер unknown

Опубликована: Окт. 21, 2024

Abstract Advancements in single-atom-based catalysts are crucial for enhancing oxygen evolution reaction (OER) performance while reducing precious metal usage. A comprehensive understanding of underlying mechanisms will expedite this progress further. Here we report Ir single atoms coordinated out-of-plane with dimethylimidazole (MI) on CoFe hydroxide (Ir 1 /(Co,Fe)-OH/MI). This /(Co,Fe)-OH/MI catalyst, which was prepared using a simple immersion method, delivers ultralow overpotentials 179 mV at current density 10 mA cm −2 and 257 600 as well an ultra-small Tafel slope 24 dec −1 . Furthermore, has total mass activity exceeding that commercial IrO 2 by factor 58.4. Ab initio simulations indicate the coordination MI leads to electron redistribution around sites. causes positive shift d -band centre adjacent Co sites, facilitating optimal energy pathway OER.

Язык: Английский

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Resolving the Nanostructure of Carbon Nitride‐Supported Single‐Atom Catalysts

Small, Год журнала: 2025, Номер unknown

Опубликована: Янв. 9, 2025

Abstract Single‐atom catalysts (SACs) are gathering significant attention in chemistry due to their unique properties, offering uniform active site distribution and enhanced selectivity. However, precise structure often remains unclear, with multiple models proposed the literature. Understanding coordination environment of at atomic level is crucial for explaining catalytic activity. Here, a comprehensive study SACs made carbon nitride (CN x ) containing isolated nickel atoms presented. Using combination synthesis techniques characterization methods including Fourier‐transform infrared spectroscopy, X‐ray absorption spectroscopy (XAS), density functional theory (DFT) calculations, local centers CN ‐supported investigated. These results challenge conventional structural propose new architecture that better aligns current experimental evidence. This serves as foundational step toward rational approach catalyst development can facilitate more design application these innovative catalysts.

Язык: Английский

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