A review on fundamentals for designing oxygen evolution electrocatalysts

Chemical Society Reviews, Journal Year: 2020, Volume and Issue: 49(7), P. 2196 - 2214

Published: Jan. 1, 2020

The fundamentals related to the oxygen evolution reaction and catalyst design are summarized discussed.

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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Single-Atom Catalysts Based on the Metal–Oxide Interaction

Chemical Reviews, Journal Year: 2020, Volume and Issue: 120(21), P. 11986 - 12043

Published: Oct. 28, 2020

Metal atoms dispersed on the oxide supports constitute a large category of single-atom catalysts. In this review, supported catalysts are discussed about their synthetic procedures, characterizations, and reaction mechanism in thermocatalysis, such as water-gas shift reaction, selective oxidation/hydrogenation, coupling reactions. Some typical materials, including ferric oxide, cerium titanium dioxide, aluminum so on, intentionally mentioned for unique roles anchoring metal taking part catalytic The interactions between summarized to give picture how stabilize atomic centers, rationally tune geometric structures electronic states single atoms. Furthermore, several directions fabricating with improved performance proposed basis state-of-the-art understanding metal-oxide interactions.

Language: Английский

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Propane dehydrogenation: catalyst development, new chemistry, and emerging technologies

Chemical Society Reviews, Journal Year: 2021, Volume and Issue: 50(5), P. 3315 - 3354

Published: Jan. 1, 2021

This review describes recent advances in the propane dehydrogenation process terms of emerging technologies, catalyst development and new chemistry.

Language: Английский

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Toward Active-Site Tailoring in Heterogeneous Catalysis by Atomically Precise Metal Nanoclusters with Crystallographic Structures

Chemical Reviews, Journal Year: 2020, Volume and Issue: 121(2), P. 567 - 648

Published: Sept. 17, 2020

Heterogeneous catalysis involves solid-state catalysts, among which metal nanoparticles occupy an important position. Unfortunately, no two from conventional synthesis are the same at atomic level, though such regular can be highly uniform nanometer level (e.g., size distribution ∼5%). In long pursuit of well-defined nanocatalysts, a recent success is atomically precise nanoclusters protected by ligands in range tens to hundreds atoms (equivalently 1–3 nm core diameter). More importantly, have been crystallographically characterized, just like protein structures enzyme catalysis. Such merge features homogeneous catalysts ligand-protected centers) and enzymes protein-encapsulated clusters few bridged ligands). The with their total available constitute new class model hold great promise fundamental research, including dependent activity, control catalytic selectivity structure surface ligands, structure–property relationships atomic-level, insights into molecular activation mechanisms, identification active sites on nanocatalysts. This Review summarizes progress utilization for These nanocluster-based enabled heterogeneous research single-atom single-electron levels. Future efforts expected achieve more exciting understanding tailoring design high activity under mild conditions.

Language: Английский

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Theoretical Understandings of Graphene-based Metal Single-Atom Catalysts: Stability and Catalytic Performance

Chemical Reviews, Journal Year: 2020, Volume and Issue: 120(21), P. 12315 - 12341

Published: Oct. 28, 2020

Research on heterogeneous single-atom catalysts (SACs) has become an emerging frontier in catalysis science because of their advantages high utilization noble metals, precisely identified active sites, selectivity, and tunable activity. Graphene, as a one-atom-thick two-dimensional carbon material with unique structural electronic properties, been reported to be superb support for SACs. Herein, we provide overview recent progress investigations graphene-based Among the large number publications, will selectively focus stability metal single-atoms (SAs) anchored different sites graphene catalytic performances SACs chemical reactions, including thermocatalysis electrocatalysis. We summarize fundamental understandings structures intrinsic connection properties SACs, also brief perspective future design efficient graphene-like materials.

Language: Английский

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Design concept for electrocatalysts

Nano Research, Journal Year: 2021, Volume and Issue: 15(3), P. 1730 - 1752

Published: Sept. 4, 2021

Language: Английский

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Scalable two-step annealing method for preparing ultra-high-density single-atom catalyst libraries

Nature Nanotechnology, Journal Year: 2021, Volume and Issue: 17(2), P. 174 - 181

Published: Nov. 25, 2021

Language: Английский

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Surface Coordination Chemistry of Atomically Dispersed Metal Catalysts

Chemical Reviews, Journal Year: 2020, Volume and Issue: 120(21), P. 11810 - 11899

Published: Aug. 13, 2020

Atomically dispersed metal catalysts (ADCs), as an emerging class of heterogeneous catalysts, have been widely investigated during the past two decades. The atomic dispersion nature catalytic centers makes them ideal system for bridging homogeneous and catalysts. recent rapid development new synthetic strategies has led to explosive growth ADCs with a wide spectrum atoms on supports different chemical compositions natures. availability diverse creates powerful materials platform investigating mechanisms complicated catalysis at levels. Considering most are coordinated by donors from supports, this review will demonstrate how surface coordination chemistry plays important role in determining performance ADCs. This start link between catalysis. After brief description advantages limitations common structure characterization methods ADCs, types be discussed. We mainly illustrate local vicinal species support systems act together center determine activity, selectivity, stability dynamic change highlighted. At end review, personal perspectives further field provided.

Language: Английский

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Strong Metal–Support Interactions between Pt Single Atoms and TiO₂

Angewandte Chemie International Edition, Journal Year: 2020, Volume and Issue: 59(29), P. 11824 - 11829

Published: April 17, 2020

Strong metal-support interaction (SMSI) has gained great attention in the field of heterogeneous catalysis. However, whether single-atom catalysts can exhibit SMSI remains unknown. Here, we demonstrate that occur on TiO2 -supported Pt single atoms but at a much higher reduction temperature than for nanoparticles (NPs). involved are not covered by support nor do they sink into its subsurface. The suppression CO adsorption stems from coordination saturation (18-electron rule) rather physical coverage support. Based new finding it is revealed true active sites hydrogenation 3-nitrostyrene, while NPs barely contribute to activity since NP selectively encapsulated. findings this work provide approach study tuning SMSI.

Language: Английский

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