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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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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Electrocatalytic oxygen evolution reaction for energy conversion and storage: A comprehensive review

Nano Energy, Journal Year: 2017, Volume and Issue: 37, P. 136 - 157

Published: May 10, 2017

Language: Английский

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Design of N-Coordinated Dual-Metal Sites: A Stable and Active Pt-Free Catalyst for Acidic Oxygen Reduction Reaction

Journal of the American Chemical Society, Journal Year: 2017, Volume and Issue: 139(48), P. 17281 - 17284

Published: Nov. 14, 2017

We develop a host-guest strategy to construct an electrocatalyst with Fe-Co dual sites embedded on N-doped porous carbon and demonstrate its activity for oxygen reduction reaction in acidic electrolyte. Our catalyst exhibits superior performance, comparable onset potential (Eonset, 1.06 vs 1.03 V) half-wave (E1/2, 0.863 0.858 than commercial Pt/C. The fuel cell test reveals (Fe,Co)/N-C outperforms most reported Pt-free catalysts H2/O2 H2/air. In addition, this cathode metal is stable long-term operation 50 000 cycles electrode measurement 100 h H2/air single operation. Density functional theory calculations reveal the favored activation of O-O, crucial four-electron reduction.

Language: Английский

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Transition Metal Oxides as Electrocatalysts for the Oxygen Evolution Reaction in Alkaline Solutions: An Application-Inspired Renaissance

Journal of the American Chemical Society, Journal Year: 2018, Volume and Issue: 140(25), P. 7748 - 7759

Published: May 22, 2018

Water splitting is the essential chemical reaction to enable storage of intermittent energies such as solar and wind in form hydrogen fuel. The oxygen evolution (OER) often considered bottleneck water splitting. Though metal oxides had been reported OER electrocatalysts more than half a century ago, recent interest renewable energy has spurred renaissance studies transition Earth-abundant nonprecious catalysts. This Perspective presents major progress several key areas field theoretical understanding, activity trend, situ operando characterization, active site determination, novel materials. A personal overview past achievements future challenges also provided.

Language: Английский

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Recent progress made in the mechanism comprehension and design of electrocatalysts for alkaline water splitting

Energy & Environmental Science, Journal Year: 2019, Volume and Issue: 12(9), P. 2620 - 2645

Published: Jan. 1, 2019

Alkaline water splitting is an attractive method for sustainable hydrogen production.

Language: Английский

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Rational design of electrocatalysts and photo(electro)catalysts for nitrogen reduction to ammonia (NH₃) under ambient conditions

Energy & Environmental Science, Journal Year: 2017, Volume and Issue: 11(1), P. 45 - 56

Published: Nov. 7, 2017

This perspective highlights the rational design of efficient electrocatalysts and photo(electro)catalysts for N₂ reduction to ammonia (NH₃) under ambient conditions.

Language: Английский

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Defect-rich and ultrathin N doped carbon nanosheets as advanced trifunctional metal-free electrocatalysts for the ORR, OER and HER

Energy & Environmental Science, Journal Year: 2018, Volume and Issue: 12(1), P. 322 - 333

Published: Nov. 21, 2018

Defect-rich and ultrathin N doped carbon nanosheets exhibited low overpotentials robust stability for simultaneous ORR, OER HER.

Language: Английский

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Single‐Atom Electrocatalysts

Angewandte Chemie International Edition, Journal Year: 2017, Volume and Issue: 56(45), P. 13944 - 13960

Published: May 24, 2017

Abstract Recent years have witnessed a dramatic increase in the production of sustainable and renewable energy. However, electrochemical performances various systems are limited, there is an intensive search for highly efficient electrocatalysts by more rational control over size, shape, composition, structure. Of particular interest studies on single‐atom catalysts (SACs), which sparked new interests electrocatalysis because their high catalytic activity, stability, selectivity, 100 % atom utilization. In this Review, we introduce innovative syntheses characterization techniques SACs, with focus applications oxygen reduction/evolution reaction, hydrogen evolution hydrocarbon conversion reactions fuel cells (electrooxidation methanol, ethanol, formic acid). The electrocatalytic performance further considered at atomic level underlying mechanisms discussed. ultimate goal tailoring single atoms applications.

Language: Английский

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