Heterogeneous single-atom catalysis

Nature Reviews Chemistry, Journal Year: 2018, Volume and Issue: 2(6), P. 65 - 81

Published: May 24, 2018

Language: Английский

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Carbon capture and conversion using metal–organic frameworks and MOF-based materials

Chemical Society Reviews, Journal Year: 2019, Volume and Issue: 48(10), P. 2783 - 2828

Published: Jan. 1, 2019

Rapidly increasing atmospheric CO2 concentrations threaten human society, the natural environment, and synergy between two. In order to ameliorate problem, carbon capture conversion techniques have been proposed. Metal-organic framework (MOF)-based materials, a relatively new class of porous materials with unique structural features, high surface areas, chemical tunability stability, extensively studied respect their applicability such techniques. Recently, it has become apparent that capabilities MOF-based significantly boost potential toward conversion. Furthermore, materials' well-defined structures greatly facilitate understanding structure-property relationships roles in this review, we provide comprehensive account significant progress design synthesis including MOFs, MOF composites derivatives, application Special emphases on capacities catalytic performances are discussed.

Language: Английский

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State of the Art and Prospects in Metal–Organic Framework (MOF)-Based and MOF-Derived Nanocatalysis

Chemical Reviews, Journal Year: 2019, Volume and Issue: 120(2), P. 1438 - 1511

Published: June 27, 2019

Metal–organic framework (MOF) nanoparticles, also called porous coordination polymers, are a major part of nanomaterials science, and their role in catalysis is becoming central. The extraordinary variability richness structures afford engineering synergies between the metal nodes, functional linkers, encapsulated substrates, or nanoparticles for multiple selective heterogeneous interactions activations these MOF-based nanocatalysts. Pyrolysis MOF-nanoparticle composites forms highly N- P-doped graphitized MOF-derived that increasingly used as efficient catalysts especially electro- photocatalysis. This review first briefly summarizes this background MOF nanoparticle then comprehensively reviews fast-growing literature reported during last years. parts organic molecular reactions, electrocatalysis, photocatalysis, views prospects. Major challenges our society addressed using well-defined fields synthesis, energy, environment. In spite many achievements, enormous progress still necessary to improve understanding processes involved beyond proof-of-concept, particularly methane oxidation, hydrogen production, water splitting, CO2 reduction methanol, nitrogen fixation, depollution.

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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Atomically dispersed Ni(i) as the active site for electrochemical CO2 reduction

Nature Energy, Journal Year: 2018, Volume and Issue: 3(2), P. 140 - 147

Published: Feb. 1, 2018

Language: Английский

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Emerging Two-Dimensional Nanomaterials for Electrocatalysis

Chemical Reviews, Journal Year: 2018, Volume and Issue: 118(13), P. 6337 - 6408

Published: March 19, 2018

Over the past few decades, design and development of advanced electrocatalysts for efficient energy conversion technologies have been subjects extensive study. With discovery graphene, two-dimensional (2D) nanomaterials emerged as some most promising candidates heterogeneous due to their unique physical, chemical, electronic properties. Here, we review 2D-nanomaterial-based selected electrocatalytic processes. We first discuss advances in 2D based on different compositions functions followed by specific principles. Following this overview, various processes involved water cycle, carbon nitrogen cycle from fundamental conception functional application. place a significant emphasis engineering strategies influence these intrinsic material performance, such properties adsorption energetics. Finally, feature opportunities challenges ahead electrocatalysts. By considering theoretical calculations, surface characterization, electrochemical tests, describe relationships between structure, energy, apparent activity wide variety with goal providing better understanding emerging at atomic level.

Language: Английский

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Atomically dispersed Fe ³⁺ sites catalyze efficient CO ₂ electroreduction to CO

Science, Journal Year: 2019, Volume and Issue: 364(6445), P. 1091 - 1094

Published: June 13, 2019

Currently, the most active electrocatalysts for conversion of CO2 to CO are gold-based nanomaterials, whereas non-precious metal catalysts have shown low modest activity. Here, we report a catalyst dispersed single-atom iron sites that produces at an overpotential as 80 millivolts. Partial current density reaches 94 milliamperes per square centimeter 340 Operando x-ray absorption spectroscopy revealed be discrete Fe3+ ions, coordinated pyrrolic nitrogen (N) atoms N-doped carbon support, maintain their +3 oxidation state during electrocatalysis, probably through electronic coupling conductive support. Electrochemical data suggest derive superior activity from faster adsorption and weaker than conventional Fe2+ sites.

Language: Английский

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Designing materials for electrochemical carbon dioxide recycling

Nature Catalysis, Journal Year: 2019, Volume and Issue: 2(8), P. 648 - 658

Published: July 1, 2019

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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Electrochemical CO₂ Reduction into Chemical Feedstocks: From Mechanistic Electrocatalysis Models to System Design

Advanced Materials, Journal Year: 2019, Volume and Issue: 31(31)

Published: May 16, 2019

The electrochemical reduction of CO2 is a promising route to convert intermittent renewable energy storable fuels and valuable chemical feedstocks. To scale this technology for industrial implementation, deepened understanding how the reaction (CO2 RR) proceeds will help converge on optimal operating parameters. Here, techno-economic analysis presented with goal identifying maximally profitable products performance targets that must be met ensure economic viability-metrics include current density, Faradaic efficiency, stability. latest computational RR discussed along can contribute rational design efficient, selective, stable electrocatalysts. Catalyst materials are classified according their selectivity interest potential achieve assessed. recent progress opportunities in system electroreduction described. conclude, remaining technological challenges highlighted, suggesting full-cell efficiency as guiding metric impact.

Language: Английский

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