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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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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Nanoscale Metal Particle Modified Single‐Atom Catalyst: Synthesis, Characterization, and Application

Advanced Materials, Год журнала: 2023, Номер 36(2)

Опубликована: Июль 13, 2023

Single-atom catalysts (SACs) have attracted considerable attention in heterogeneous catalysis because of their well-defined active sites, maximum atomic utilization efficiency, and unique unsaturated coordinated structures. However, effectiveness is limited to reactions requiring sites containing multiple metal atoms. Furthermore, the loading amounts single-atom must be restricted prevent aggregation, which can adversely affect catalytic performance despite high activity individual The introduction nanoscale particles (NMPs) into SACs (NMP-SACs) has proven an efficient approach for improving performance. A comprehensive review urgently needed systematically introduce synthesis, characterization, application NMP-SACs mechanisms behind superior This first presents classifies different through NMPs enhance SACs. It then summarizes currently reported synthetic strategies state-of-the-art characterization techniques NMP-SACs. Moreover, electro/thermo/photocatalysis, reasons are discussed. Finally, challenges perspectives future design advanced addressed.

Язык: Английский

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Construction of Single Ni Atom-Immobilized ZIF-8 with Ordered Hierarchical Pore Structures for Selective CO₂ Photoreduction

ACS Catalysis, Год журнала: 2023, Номер 13(10), С. 6630 - 6640

Опубликована: Май 1, 2023

The rational construction of single-atom-modified porous metal–organic frameworks (MOFs) for efficient CO2 photoconversion is a promising avenue, yet the one that poses significant challenge. In this study, we demonstrate successful Ni single-atom-immobilized ZIF-8 with an ordered hierarchical (macro–micro) pore structure highly photocatalytic reduction to CO. interpenetrated macroporous in microporous built up by employing polystyrene (PS) opal as hard template, while high stability framework achieved through double-solvent-induced crystallization. enables rapid mass transport and strong adsorption CO2, single atoms active sites electron-trapping optimize reaction energy hinder competitive H2 evolution. As result, achieves activity 4.2 mmol g–1 h–1 CO yield electronic selectivity 94%, which shows 47-fold ZIF-8. This work highlights significance constructing MOFs single-atom-active improve photoreduction realizing carbon neutralization.

Язык: Английский

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Atomic Distance Engineering in Metal Catalysts to Regulate Catalytic Performance

Advanced Materials, Год журнала: 2023, Номер 36(3)

Опубликована: Окт. 2, 2023

Abstract It is very important to understand the structure–performance relationship of metal catalysts by adjusting microstructure at atomic scale. The distance has an essential influence on composition environment active atom, which a key factor for design targeted with desired function. In this review, we discuss and summarize strategies changing from three aspects relate their effects reactivity catalysts. First, regulating bond length between coordination atom one single‐atom site catalytic performance are introduced. lengths affected strain effect support high‐shell doping can evolve during reaction. Next, sites discussed. Due space matching adsorption electron transport, be adjusted shortening distance. addition, arrangement spacing surface atoms nanocatalysts studied. Finally, comprehensive summary outlook given.

Язык: Английский

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2D semiconductor nanosheets for solar photocatalysis

EcoEnergy, Год журнала: 2023, Номер 1(2), С. 248 - 295

Опубликована: Дек. 1, 2023

Abstract In the advancing world of graphene, highly anisotropic 2D semiconductor nanosheets, notable for their nanometer‐scale thickness, have emerged as a leading innovation, displaying immense potential in exploration renewable and clean energy production. These garnered significant attention from researchers. The nanosheets are marked by extraordinary electronic, optical, chemical attributes, positioning them attractive foundational components heterogeneous photocatalysts. This review diligently summarizes both seminal work ongoing developments pertaining to application solar within context photocatalysis. We begin detailing distinctive properties concentrating on pivotal roles augmenting photocatalytic efficiency, explaining intrinsic mechanisms that govern migration rate photogenerated carriers material's surface. Subsequently, we delineate methods employed synthesize typical nanosheets. alignment with overarching objective expanding light absorption capacity accelerating charge transfer, also examine current research hybridization techniques involving materials varied dimensions, well deployment diverse applications. conclude identifying promising avenues challenges await further this burgeoning field.

Язык: Английский

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Photoelectron “Bridge” in Van Der Waals Heterojunction for Enhanced Photocatalytic CO₂ Conversion Under Visible Light

Advanced Materials, Год журнала: 2023, Номер 35(38)

Опубликована: Июнь 26, 2023

Constructing Van der Waals heterojunction is a crucial strategy to achieve excellent photocatalytic activity. However, in most heterojunctions synthesized by ex situ assembly, electron transfer encounters huge hindrances at the interface between two components due large spacing and potential barrier. Herein, phosphate-bridged of cobalt phthalocyanine (CoPc)/tungsten disulfide (WS2 ) bridged phosphate (xCoPc-nPO4- -WS2 designed prepared traditional wet chemistry method. By introducing small molecule into CoPc WS2 , creates an "bridge", resulting compact combination eliminating space Therefore, (PO4- bridge can serve as efficient channel efficiently transmit photoelectrons from under excited states. These are captured catalytic central Co2+ subsequently convert CO2 molecules CO CH4 products, achieving 17-fold enhancement on 3CoPc-0.6PO4- sample compared that pure . Introducing "bridge" create provides new perspective designing photocatalysts for reduction valuable products.

Язык: Английский

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Atomic Engineering of Single‐Atom Nanozymes for Biomedical Applications

Advanced Materials, Год журнала: 2024, Номер 36(21)

Опубликована: Фев. 7, 2024

Single-atom nanozymes (SAzymes) showcase not only uniformly dispersed active sites but also meticulously engineered coordination structures. These intricate architectures bestow upon them an exceptional catalytic prowess, thereby captivating numerous minds and heralding a new era of possibilities in the biomedical landscape. Tuning microstructure SAzymes on atomic scale is key factor designing targeted with desirable functions. This review first discusses summarizes three strategies for their impact reactivity biocatalysis. The effects choices carrier, different synthesis methods, modulation first/second shell, type number metal centers enzyme-like activity are unraveled. Next, attempt made to summarize biological applications tumor therapy, biosensing, antimicrobial, anti-inflammatory, other from mechanisms. Finally, how designed regulated further realization diverse reviewed prospected. It envisaged that comprehensive presented within this exegesis will furnish novel perspectives profound revelations regarding SAzymes.

Язык: Английский

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Molecular Co-Catalyst Confined within a Metallacage for Enhanced Photocatalytic CO₂ Reduction

Journal of the American Chemical Society, Год журнала: 2024, Номер 146(3), С. 2275 - 2285

Опубликована: Янв. 12, 2024

The construction of structurally well-defined supramolecular hosts to accommodate catalytically active species within a cavity is promising way address catalyst deactivation. resulting catalysts can significantly improve the utilization catalytic sites, thereby achieving highly efficient chemical conversion. In this study, Co-metalated phthalocyanine (

Язык: Английский

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