Recent advances in single-atom catalysts (SACs) for photocatalytic applications

Materials Reports Energy, Год журнала: 2024, Номер 4(3), С. 100285 - 100285

Опубликована: Авг. 1, 2024

Artificial photocatalysis represents a hopeful avenue for tackling the global crisis of environmental and energy sustainability. The crux industrial application in lies efficient photocatalysts that can inhibit recombination photogenerated charge carriers, thereby boost efficiency chemical reactions. In past decade, single-atom catalysts (SACs) have been growing extremely rapidly become forefront owing to their superior utilization metal atoms outstanding catalytic activity. this work, we provide an overview latest advancements challenges SACs photocatalysis, focusing on photocatalytic mechanisms, encompassing generation, separation, migration, surface extraction carriers. We also explore design, synthesis, characterization introduce progress applications, such as water splitting CO2 reduction. Lastly, offer our personal perspectives opportunities aiming insights into future studies applications.

Язык: Английский

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Leveraging Inherent Structure of Tin Oxide for Efficient Carbonaceous Products Electrosynthesis

Advanced Energy Materials, Год журнала: 2024, Номер 14(33)

Опубликована: Июнь 27, 2024

Abstract Electrochemical CO 2 reduction reaction (CO RR) holds a great potential for converting into valuable carbon‐based chemicals and fuels. A promising strategy enhancing RR performance is the deliberate structural design of electrocatalysts, which can maximize utilization inherent advantages. In this work, SnO nanocubes (NCs) nanorods (NRs) are synthesized using surface energy‐driven growth orientation method, where stable (110) facet highly energetic (001) constitute nanostructures. Leveraging merits different facets on , theoretical calculations reveal that plays primary role in inhibiting hydrogen evolution (HER), while both favorable ‐to‐formate conversion under external bias. As result, NCs with higher ratio (001)/(110) achieve nearly 100% selectivity formation carbonaceous products during RR. More importantly, maximum partial current density about 1 cm −2 formate Faradaic efficiency (FE) over 90% achieved flow cell, distinguishing it from most reported Sn‐based electrocatalysts. These results highlight strategic advantages leveraging structure nanomaterials efficient

Язык: Английский

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Direct low concentration CO2 electroreduction to multicarbon products via rate-determining step tuning

Nature Communications, Год журнала: 2024, Номер 15(1)

Опубликована: Ноя. 29, 2024

Direct converting low concentration CO2 in industrial exhaust gases to high-value multi-carbon products via renewable-energy-powered electrochemical catalysis provides a sustainable strategy for utilization with minimized separation and purification capital energy cost. Nonetheless, the electrocatalytic conversion of dilute into value-added chemicals (C2+ products, e.g., ethylene) is frequently impeded by rate weak carbon intermediates' surface adsorption strength. Here, we fabricate range Cu catalysts comprising fine-tuned Cu(111)/Cu2O(111) interface boundary density crystal structures aimed at optimizing rate-determining step decreasing thermodynamic barriers adsorption. Utilizing engineering, attain Faradaic efficiency (51.9 ± 2.8) % partial current (34.5 6.4) mA·cm−2 C2+ feed condition (5% v/v), comparing state-of-art electrolysis. In contrast prevailing belief that activation ( $${{CO}}_{2}+{e}^{-}+\, * \,\to {}^{ }{CO}_{2}^{-}$$ ) governs reaction rate, discover that, under conditions, shifts generation *COOH $${}^{ } {{CO}}_{2}^{-}+{H}_{2}O\to {COOH}+{{OH}}^{-}({aq})$$ Cu0/Cu1+ boundary, resulting better production performance. The development operate resembling waste holds promise reduction. authors report vacuum calcination approach regulating on Cu-based can electro-catalyze low-concentration CO2.

Язык: Английский

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Cu promoted electron-rich Bi sites in Metal–Organic layers for Industrial-current-level acidic electroreduction CO2 to liquid Fuel

Journal of Colloid and Interface Science, Год журнала: 2025, Номер 686, С. 1168 - 1174

Опубликована: Фев. 4, 2025

Язык: Английский

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Recent advances in nanoscale engineering of Pd-based electrocatalysts for selective CO2 electroreduction to formic acid/formate

Energy Materials, Год журнала: 2024, Номер 4(3), С. 400027 - 400027

Опубликована: Янв. 1, 2024

Electrochemical conversion of carbon dioxide (CO2) into high-value chemicals and fuels driven by electricity derived from renewable energy has been recognized as a promising strategy to achieve neutrality create sustainable energy. Particularly the viewpoint product values economic viability, selective CO2 reduction formic acid/formate shown great promise. Palladium (Pd) demonstrated only metal that can produce perfectly near equilibrium potential; yet, it still suffers CO poisoning, poor stability competitive pathway at high overpotentials. Herein, recent progress Pd-based electrocatalysts for electroreduction their mechanistic understanding are reviewed. First, fundamentals electrochemical reaction on Pd presented. Then, advances in rational design nanoscale engineering strategies further improving activity selectivity product, including size control, morphology shape alloying, heteroatom doping, surface-strain engineering, phase discussed perspectives both experimental computational aspects. Finally, we discuss pertinent challenges describe future prospects opportunities terms development electrocatalysts, electrolyzers characterization techniques this research field.

Язык: Английский

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Theoretical insights into lanthanide rare earth single-atom catalysts for electrochemical CO₂ reduction

Journal of Materials Chemistry A, Год журнала: 2024, Номер 12(26), С. 16183 - 16189

Опубликована: Янв. 1, 2024

This study comprehensively investigated the catalytic performance of lanthanide rare earth metals (REMs) anchored into Salen for CO 2 RR in terms stability, selectivity, and activity using density functional theory (DFT).

Язык: Английский

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Catalyst Design and Engineering for CO₂‐to‐Formic Acid Electrosynthesis for a Low‐Carbon Economy

Advanced Materials, Год журнала: 2024, Номер unknown

Опубликована: Окт. 12, 2024

Abstract Formic acid (FA) has emerged as a promising candidate for hydrogen energy storage due to its favorable properties such low toxicity, flammability, and high volumetric capacity under ambient conditions. Recent analyses have suggested that FA produced by electrochemical carbon dioxide (CO 2 ) reduction reaction (eCO RR) using low‐carbon electricity exhibits lower fugitive (H emissions global warming potential (GWP) during the H carrier production, transportation processes compared those of other alternatives like methanol, methylcyclohexane, ammonia. eCO RR can enable industrially relevant current densities without need pressures, temperatures, or auxiliary sources. However, widespread implementation is hindered requirement highly stable selective catalysts. Herein, aim explore evaluate catalyst engineering in designing nanostructured catalysts facilitate economically viable production FA.

Язык: Английский

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Reaction Mechanisms and Applications of Single Atom Catalysts for Thermal-Catalytic Carbon Dioxide Hydrogenation Toward Oxygenates

ACS Catalysis, Год журнала: 2024, Номер 14(21), С. 16434 - 16458

Опубликована: Окт. 23, 2024

Thermo-catalytic CO2 hydrogenation to high-value oxygenates has been regarded as one of the most powerful strategies that can potentially alleviate excessive emissions. However, due high chemical stability and variability pathways, it is still challenging achieve highly active selective hydrogenation. Single atom catalysts (SACs) with ultrahigh metal utilization efficiency extraordinary electronic features have displayed growing importance for thermo-catalytic multiple developed improve performances. Here, we review breakthroughs in developing SACs efficient toward common (CO, HCOOH, CH3OH, CH3CH2OH) following order: first, an analysis reaction mechanisms thermodynamics challenges reactions; second, a summary SAs designed by dividing them into two categories single- dual-sites; third, discussion support effects focus on approaches regulating strong metal–support interaction (MSI). Summarily, current future perspectives develop higher-performance are presented. We expect this bring more design inspiration trigger innovation catalytic evolution materials eventually benefit achievement carbon-neutrality goal.

Язык: Английский

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Steering Geometric Reconstruction of Bismuth with Accelerated Dynamics for CO2 Electroreduction

Angewandte Chemie, Год журнала: 2024, Номер 136(34)

Опубликована: Июнь 5, 2024

Abstract Bismuth‐based materials have emerged as promising catalysts in the electrocatalytic reduction of CO 2 to formate. However, reasons for reconstruction Bi‐based precursors form bismuth nanosheets are still puzzling, especially formation defective sites. Herein, we prepare with vacancy‐rich defects (V‐Bi NS) by rapidly reconstructing Bi 19 Cl 3 S 27 under negative potential. Theoretical analysis reveals that introduction chlorine induces generation intrinsic electric field precursor, thereby increasing electron transfer rate and further promoting metallization trivalent bismuth. Meanwhile, experimental tests verify has a faster than . The formed V‐Bi NS exhibits up 96 % HCOO − Faraday efficiency 400 mA cm −2 partial current densities, its electrochemical active surface area normalized formate density yield 2.2 times higher those intact (I‐Bi NS). Density functional theory calculations indicate vacancies electron‐rich aggregation reduce activation energy *CO radicals stabilize adsorption key intermediate *OCHO, thus facilitating reaction kinetics production.

Язык: Английский

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Recent research progress of bismuth-based electrocatalysts for electrochemical reduction of carbon dioxide

Microstructures, Год журнала: 2025, Номер 5(1)

Опубликована: Фев. 18, 2025

With modern science and technology developing, the concentration of atmospheric carbon oxide (CO2) has increased substantially. CO2 electroreduction reaction (CO2RR) can efficiently utilize sustainable power to produce value-added chemicals implement energy storage. Previous researches have proved bismuth metal bismuth-based materials transfer formate selectively. However, in this paper, latest progress synthesis advanced electrocatalysts with CO2RR catalysts is reviewed from aspects catalyst material design, synthesis, mechanism performance verification/optimization. Some methods designing are discussed analyzed different angles, including morphology, defects heterogeneous structures. In particular, application situ characterization technique introduced. Subsequently, some views expectations regarding current challenges future potential research presented.

Язык: Английский

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