Atomically dispersed materials: Ideal catalysts in atomic era

Nano Research, Год журнала: 2023, Номер 17(1), С. 18 - 38

Опубликована: Май 25, 2023

Язык: Английский

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Dual‐Atom Support Boosts Nickel‐Catalyzed Urea Electrooxidation

Angewandte Chemie International Edition, Год журнала: 2023, Номер 62(22)

Опубликована: Март 24, 2023

Nickel-based catalysts have been regarded as one of the most promising electrocatalysts for urea oxidation reaction (UOR), however, their activity is largely limited by inevitable self-oxidation Ni species (NSOR) during UOR. Here, we proposed an interface chemistry modulation strategy to trigger occurrence UOR before NSOR via constructing a 2D/2D heterostructure that consists ultrathin NiO anchored Ru-Co dual-atom support (Ru-Co DAS/NiO). Operando spectroscopic characterizations confirm this unique triggering mechanism on surface DAS/NiO. Consequently, fabricated catalyst exhibits outstanding with low potential 1.288 V at 10 mA cm-2 and remarkable long-term durability more than 330 h operation. DFT calculations demonstrate favorable electronic structure induced heterointerface endows energetically NSOR.

Язык: Английский

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Microenvironment Engineering of Single/Dual‐Atom Catalysts for Electrocatalytic Application

Advanced Materials, Год журнала: 2023, Номер 35(31)

Опубликована: Фев. 23, 2023

Single/dual-metal atoms supported on carbon matrix can be modulated by coordination structure and neighboring active sites. Precisely designing the geometric electronic uncovering structure-property relationships of single/dual-metal confront with grand challenges. Herein, this review summarizes latest progress in microenvironment engineering single/dual-atom sites via a comprehensive comparison single-atom catalyst (SACs) dual-atom catalysts (DACs) term design principles, modulation strategy, theoretical understanding structure-performance correlations. Subsequently, recent advances several typical electrocatalysis process are discussed to get general reaction mechanisms finely-tuned SACs DACs. Finally, full-scaled summaries challenges prospects given for This will provide new inspiration development atomically dispersed electrocatalytic application.

Язык: Английский

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The reformation of catalyst: From a trial-and-error synthesis to rational design

Nano Research, Год журнала: 2023, Номер 17(4), С. 3261 - 3301

Опубликована: Сен. 27, 2023

Язык: Английский

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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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Tuning of graphitic carbon nitride (g-C3N4) for photocatalysis: A critical review

Arabian Journal of Chemistry, Год журнала: 2023, Номер 16(3), С. 104542 - 104542

Опубликована: Янв. 5, 2023

Graphitic carbon nitride (g-C3N4) is a remarkable semiconductor catalyst that has attracted widespread attention as visible light photo-responsive, metal-free, low-cost photocatalytic material. Pristine g-C3N4 suffers fast recombination of photogenerated electron-hole pairs, low surface area, and insufficient absorption, resulting in efficiency. This review presents the recent progress, perspectives, persistent challenges development g-C3N4-based materials. Several approaches employed to improve absorption materials including metal non-metal doping, co-doping, heterojunction engineering have been extensively discussed. These approaches, general, were found decrease material's bandgap, increase reduce charge carrier recombination, promote thereby enhancing overall performance. The material widely used for different applications such hydrogen production, water splitting, CO2 conversion, purification. work also identified various limitations weaknesses associated with hinders its maximum utilization under illumination presented state-of-the-art solutions reported recently. summary this would add an invaluable contribution photocatalysis research facilitate efficient light-responsive semiconducting

Язык: Английский

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Engineering a Copper Single‐Atom Electron Bridge to Achieve Efficient Photocatalytic CO₂ Conversion

Angewandte Chemie International Edition, Год журнала: 2023, Номер 62(13)

Опубликована: Фев. 7, 2023

Developing highly efficient and stable photocatalysts for the CO2 reduction reaction (CO2 RR) remains a great challenge. We designed Z-Scheme photocatalyst with N-Cu1 -S single-atom electron bridge (denoted as Cu-SAEB), which was used to mediate RR. The production of CO O2 over Cu-SAEB is high 236.0 120.1 μmol g-1 h-1 in absence sacrificial agents, respectively, outperforming most previously reported photocatalysts. Notably, as-designed throughout 30 cycles, totaling 300 h, owing strengthened contact interface Cu-SAEB, mediated by atomic structure. Experimental theoretical calculations indicated that SAEB greatly promoted Z-scheme interfacial charge-transport process, thus leading enhancement photocatalytic RR Cu-SAEB. This work represents promising platform development have potential conversion applications.

Язык: Английский

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Multifunctional carbon nitride nanoarchitectures for catalysis

Chemical Society Reviews, Год журнала: 2023, Номер 52(21), С. 7602 - 7664

Опубликована: Янв. 1, 2023

Carbon nitrides, with feasibility of tailored band gap via suitable nanoarchitectonics, are deemed as best catalysts amongst existing materials, especially for HER, OWS, COR, NRR, water oxidation, pollutant removal, and organocatalysis.

Язык: Английский

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Co⁰−Co^δ+ Interface Double‐Site‐Mediated C−C Coupling for the Photothermal Conversion of CO₂ into Light Olefins

Angewandte Chemie International Edition, Год журнала: 2023, Номер 62(23)

Опубликована: Апрель 4, 2023

Solar-driven CO2 hydrogenation into multi-carbon products is a highly desirable, but challenging reaction. The bottleneck of this reaction lies in the C-C coupling C1 intermediates. Herein, we construct centre for intermediates via situ formation Co0 -Coδ+ interface double sites on MgAl2 O4 (Co-CoOx /MAO). Our experimental and theoretical prediction results confirmed effective adsorption activation by site to produce intermediates, while introduction electron-deficient state Coδ+ can effectively reduce energy barrier key CHCH* Consequently, Co-CoOx /MAO exhibited high C2-4 hydrocarbons production rate 1303 μmol g-1 h-1 ; total organic carbon selectivity 62.5 % under light irradiation with ratio (≈11) olefin paraffin. This study provides new approach toward design photocatalysts used conversion C2+ products.

Язык: Английский

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Atomically Dispersed Silver‐Cobalt Dual‐Metal Sites Synergistically Promoting Photocatalytic Hydrogen Evolution

Advanced Functional Materials, Год журнала: 2023, Номер 33(33)

Опубликована: Апрель 25, 2023

Abstract Regulating the coordination environment of single‐atom sites is high necessity to promote catalytic performances photocatalysts. Herein, preparation atomically dispersed Co‐Ag dual‐metal anchored on P‐doped carbon nitride (Co 1 Ag ‐PCN) via supramolecular and solvothermal approaches reported, which demonstrates desirable performance for photocatalytic H 2 evolution from water splitting. The optimal Co ‐PCN catalyst achieves a remarkable hydrogen production rate 1190 µmol g −1 h with an apparent quantum yield (AQY) 1.49% at 365 nm, superior most newly reported metal‐N‐coordinated Systematic experimental characterizations density functional theoretic studies attribute enhanced activity synergistic effect dual exclusive configuration Co‐N 6 Ag‐N C , enhances charge promotes oriented electrons transport metal centers reduced free energy barriers by facilitating formation H* intermediates as key step in evolution. This study reveals versatile strategy tailor electronic structures synergies engineering neighboring environment.

Язык: Английский

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