Destabilization of Single‐Atom Catalysts: Characterization, Mechanisms, and Regeneration Strategies

Advanced Materials, Год журнала: 2025, Номер unknown

Опубликована: Янв. 19, 2025

Abstract Numerous in situ characterization studies have focused on revealing the catalytic mechanisms of single‐atom catalysts (SACs), providing a theoretical basis for their rational design. Although research is relatively limited, stability SACs under long‐term operating conditions equally important and prerequisite real‐world energy applications, such as fuel cells water electrolyzers. Recently, there has been rise destabilization regeneration SACs; however, timely comprehensive summaries that provide catalysis community with valuable insights directions are still lacking. This review summarizes recent advances strategies SACs, specifically highlighting various state‐of‐the‐art techniques employed studies. The factors induce identified by discussing failure active sites, coordination environments, supports, reaction scenarios. Next, primary introduced, including redispersion, surface poison desorption, exposure subsurface sites. Additionally, advantages limitations both ex discussed. Finally, future proposed, aimed at constructing structure–stability relationships guiding design more stable SACs.

Язык: Английский

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High-Entropy Ultrathin Amorphous Metal–Organic Framework-Stabilized Ru(Mo) Dual-Atom Sites for Water Oxidation

ACS Energy Letters, Год журнала: 2024, Номер unknown, С. 5763 - 5770

Опубликована: Ноя. 6, 2024

High-entropy metal–organic frameworks (HE-MOFs) offer immense potential in electrocatalysis due to their diverse metallic compositions and high densities of active sites. Integrating bimetallic single-atom catalysts (SACs) with HE-MOFs for enhanced oxygen evolution reaction (OER) performance remains challenging. Here, we stabilize atomically dispersed Ru Mo amorphous HE-MOF nanosheets (HE(Ru,Mo)-MOFs) via situ-formed high-entropy oxides, elucidating the deprotonation mechanism. Evidence supports presence high-density O-bridged dual-atom The multimetallic composition induces electronic redistribution balances oxidation state metal sites, enhancing intrinsic OER activity. HE(Ru,Mo)-MOFs exhibit low overpotentials 267 mV@10 mA cm–2 266 alkaline freshwater industrial wastewater, respectively, exceptional durability surpassing that commercial RuO2 catalysts. Mechanistic insights reveal atomic dispersion facilitates rapid charge transfer intermediate transformation, promising advanced energy conversion.

Язык: Английский

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Graphitic Carbon Nitride for Photocatalytic Hydrogen Production from Water Splitting: Nano-Morphological Control and Electronic Band Tailoring

Nanomaterials, Год журнала: 2024, Номер 15(1), С. 45 - 45

Опубликована: Дек. 30, 2024

Semiconductor polymeric graphitic carbon nitride (g-C3N4) photocatalysts have garnered significant and rapidly increasing interest in the realm of visible light-driven hydrogen evolution reactions. This stems from their straightforward synthesis, ease functionalization, appealing electronic band structure, high physicochemical thermal stability, robust photocatalytic activity. review starts with basic principle photocatalysis development history, synthetic strategy, structural properties g-C3N4 materials, followed by rational design engineering perspectives nano-morphological control tailoring. Some representative results, including experimental theoretical calculations, are listed to show advantages optimizing above two characteristics for performance improvement water splitting. The existing opportunities challenges outlined illuminate developmental trajectory this field. paper provides guidance preparation better understand current state art future research directions.

Язык: Английский

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Iron-group single-atom catalysts for ammonia synthesis and decomposition

Rendiconti lincei. Scienze fisiche e naturali, Год журнала: 2025, Номер unknown

Опубликована: Май 9, 2025

Язык: Английский

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Atomically dispersed catalysts: for the efficient and stable industrial electrosynthesis of H₂O₂

Energy & Environmental Science, Год журнала: 2025, Номер unknown

Опубликована: Янв. 1, 2025

This review focuses on the sustainable synthesis of hydrogen peroxide (H 2 O ) via 2e − ORR. It emphasizes ADC design strategies. bridges fundamental research and industrial practices to drive advancement green chemical synthesis.

Язык: Английский

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Microenvironment-coordinated P1CoN3 single-atom sites for selective photocatalytic CO2 reduction to C2 products

Journal of Catalysis, Год журнала: 2025, Номер 450, С. 116245 - 116245

Опубликована: Май 27, 2025

Язык: Английский

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Ligand-to-Metal Charge Transfer Modulation in UiO-66 Metal Organic Frameworks for Photocatalytic Applications

Journal of environmental chemical engineering, Год журнала: 2025, Номер unknown, С. 117360 - 117360

Опубликована: Май 1, 2025

Язык: Английский

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