Metal Catalysts for Heterogeneous Catalysis: From Single Atoms to Nanoclusters and Nanoparticles

Chemical Reviews, Journal Year: 2018, Volume and Issue: 118(10), P. 4981 - 5079

Published: April 16, 2018

Metal species with different size (single atoms, nanoclusters, and nanoparticles) show catalytic behavior for various heterogeneous reactions. It has been shown in the literature that many factors including particle size, shape, chemical composition, metal–support interaction, metal–reactant/solvent interaction can have significant influences on properties of metal catalysts. The recent developments well-controlled synthesis methodologies advanced characterization tools allow one to correlate relationships at molecular level. In this Review, electronic geometric structures single nanoparticles will be discussed. Furthermore, we summarize applications types reactions, CO oxidation, selective hydrogenation, organic electrocatalytic, photocatalytic We compare results obtained from systems try give a picture how work reactions perspectives future directions toward better understanding entities unifying manner.

Language: Английский

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Single-Atom Catalysts: Synthetic Strategies and Electrochemical Applications

Joule, Journal Year: 2018, Volume and Issue: 2(7), P. 1242 - 1264

Published: July 1, 2018

Language: Английский

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Fe–N–C electrocatalyst with dense active sites and efficient mass transport for high-performance proton exchange membrane fuel cells

Nature Catalysis, Journal Year: 2019, Volume and Issue: 2(3), P. 259 - 268

Published: March 4, 2019

Language: Английский

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Chemical Synthesis of Single Atomic Site Catalysts

Chemical Reviews, Journal Year: 2020, Volume and Issue: 120(21), P. 11900 - 11955

Published: April 3, 2020

Manipulating metal atoms in a controllable way for the synthesis of materials with desired structure and properties is holy grail chemical synthesis. The recent emergence single atomic site catalysts (SASC) demonstrates that we are moving toward this goal. Owing to maximum efficiency atom-utilization unique structures properties, SASC have attracted extensive research attention interest. prerequisite scientific practical applications fabricate highly reactive stable on appropriate supports. In review, various synthetic strategies summarized concrete examples highlighting key issues methods stabilize supports suppress their migration agglomeration. Next, discuss how conditions affect catalytic before ending review by prospects challenges as well further researches SASC.

Language: Английский

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Single-Atom Catalysts across the Periodic Table

Chemical Reviews, Journal Year: 2020, Volume and Issue: 120(21), P. 11703 - 11809

Published: Oct. 21, 2020

Isolated atoms featuring unique reactivity are at the heart of enzymatic and homogeneous catalysts. In contrast, although concept has long existed, single-atom heterogeneous catalysts (SACs) have only recently gained prominence. Host materials similar functions to ligands in catalysts, determining stability, local environment, electronic properties isolated thus providing a platform for tailoring targeted applications. Within just decade, we witnessed many examples SACs both disrupting diverse fields catalysis with their distinctive substantially enriching our understanding molecular processes on surfaces. To date, term SAC mostly refers late transition metal-based systems, but numerous exist which other elements play key catalytic roles. This review provides compositional encyclopedia SACs, celebrating 10th anniversary introduction this term. By defining broadest sense, explore full elemental diversity, joining different areas across whole periodic table, discussing historical milestones recent developments. particular, examine coordination structures associated accessed through distinct single-atom–host combinations relate them main applications thermo-, electro-, photocatalysis, revealing trends element-specific evolution, host design, uses. Finally, highlight frontiers field, including multimetallic atom proximity control, possible multistep cascade reactions, identifying challenges, propose directions future development flourishing field.

Language: Английский

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Well-Defined Materials for Heterogeneous Catalysis: From Nanoparticles to Isolated Single-Atom Sites

Chemical Reviews, Journal Year: 2019, Volume and Issue: 120(2), P. 623 - 682

Published: Dec. 23, 2019

The use of well-defined materials in heterogeneous catalysis will open up numerous new opportunities for the development advanced catalysts to address global challenges energy and environment. This review surveys roles nanoparticles isolated single atom sites catalytic reactions. In second section, effects size, shape, metal-support interactions are discussed nanostructured catalysts. Case studies summarized illustrate dynamics structure evolution under certain reaction conditions. third we syntheses applications atomic anchored on different types supports. final part, conclude by highlighting catalyst gaining a fundamental understanding their active sites.

Language: Английский

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Metal–Organic Framework-Based Catalysts with Single Metal Sites

Chemical Reviews, Journal Year: 2020, Volume and Issue: 120(21), P. 12089 - 12174

Published: May 1, 2020

Metal-organic frameworks (MOFs) are a class of distinctive porous crystalline materials constructed by metal ions/clusters and organic linkers. Owing to their structural diversity, functional adjustability, high surface area, different types MOF-based single sites well exploited, including coordinately unsaturated from nodes metallolinkers, as active species immobilized MOFs. Furthermore, controllable thermal transformation MOFs can upgrade them nanomaterials functionalized with single-atom catalysts (SACs). These unique features derivatives enable serve highly versatile platform for catalysis, which has actually been becoming rapidly developing interdisciplinary research area. In this review, we overview the recent developments catalysis at in emphasis on structures applications thermocatalysis, electrocatalysis, photocatalysis. We also compare results summarize major insights gained works providing challenges prospects emerging field.

Language: Английский

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Achievements, challenges and perspectives on cathode catalysts in proton exchange membrane fuel cells for transportation

Nature Catalysis, Journal Year: 2019, Volume and Issue: 2(7), P. 578 - 589

Published: July 11, 2019

Language: Английский

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Metal–organic frameworks: Structures and functional applications

Materials Today, Journal Year: 2018, Volume and Issue: 27, P. 43 - 68

Published: Nov. 19, 2018

Language: Английский

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Isolated Diatomic Ni‐Fe Metal–Nitrogen Sites for Synergistic Electroreduction of CO₂

Angewandte Chemie International Edition, Journal Year: 2019, Volume and Issue: 58(21), P. 6972 - 6976

Published: March 28, 2019

Polynary single-atom structures can combine the advantages of homogeneous and heterogeneous catalysts while providing synergistic functions based on different molecules their interfaces. However, fabrication identification such an active-site prototype remain elusive. Here we report isolated diatomic Ni-Fe sites anchored nitrogenated carbon as efficient electrocatalyst for CO2 reduction. The catalyst exhibits high selectivity with CO Faradaic efficiency above 90 % over a wide potential range from -0.5 to -0.9 V (98 at -0.7 V), robust durability, retaining 99 its initial after 30 hours electrolysis. Density functional theory studies reveal that neighboring centers not only function in synergy decrease reaction barrier formation COOH* desorption CO, but also undergo distinct structural evolution into CO-adsorbed moiety upon uptake.

Language: Английский

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