Tuning the Coordination Environment of Carbon‐Based Single‐Atom Catalysts via Doping with Multiple Heteroatoms and Their Applications in Electrocatalysis

Advanced Materials, Journal Year: 2023, Volume and Issue: 35(38)

Published: Feb. 13, 2023

Abstract Carbon‐based single‐atom catalysts (SACs) are considered to be a perfect platform for studying the structure–activity relationship of different reactions due adjustability their coordination environment. Multi‐heteroatom doping has been demonstrated as an effective strategy tuning environment carbon‐based SACs and enhancing catalytic performance in electrochemical reactions. Herein, recently developed strategies multi‐heteroatom doping, focusing on regulation active sites by heteroatoms shells, summarized. In addition, correlation between activity investigated through representative experiments theoretical calculations various Finally, concerning certain shortcomings current multi‐heteroatoms, some suggestions put forward promote development field electrocatalysis.

Language: Английский

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Atomistic Understanding of Two-dimensional Electrocatalysts from First Principles

Chemical Reviews, Journal Year: 2022, Volume and Issue: 122(12), P. 10675 - 10709

Published: May 13, 2022

Two-dimensional electrocatalysts have attracted great interest in recent years for renewable energy applications. However, the atomistic mechanisms are still under debate. Here we review first-principles studies of common 2D electrocatalysts. We first introduce models studying heterogeneous electrocatalysis then discuss with a focus on N doped graphene, single metal atoms and transition dichalcogenides. The reactions include hydrogen evolution, oxygen reduction, carbon dioxide reduction. Finally, challenges future directions to improve fundamental understanding electrocatalyst at atomic level.

Language: Английский

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Strategies for Sustainable Production of Hydrogen Peroxide via Oxygen Reduction Reaction: From Catalyst Design to Device Setup

Nano-Micro Letters, Journal Year: 2023, Volume and Issue: 15(1)

Published: May 9, 2023

Abstract An environmentally benign, sustainable, and cost-effective supply of H 2 O as a rapidly expanding consumption raw material is highly desired for chemical industries, medical treatment, household disinfection. The electrocatalytic production route via electrochemical oxygen reduction reaction (ORR) offers sustainable avenue the on-site from O. most crucial innovative part such technology lies in availability suitable electrocatalysts that promote two-electron (2e – ) ORR. In recent years, tremendous progress has been achieved designing efficient, robust, catalyst materials, including noble metals their alloys, metal-free carbon-based single-atom catalysts, molecular catalysts. Meanwhile, cell designs have significantly advanced applications at industrial level. This review summarizes fundamental basics advances 2e -ORR, design, mechanistic explorations, theoretical computations, experimental evaluations, designs. Perspectives on addressing remaining challenges are also presented with an emphasis large-scale synthesis route.

Language: Английский

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Super‐Coordinated Nickel N₄Ni₁O₂Site Single‐Atom Catalyst for Selective H₂O₂Electrosynthesis at High Current Densities

Angewandte Chemie International Edition, Journal Year: 2022, Volume and Issue: 61(38)

Published: Aug. 2, 2022

Electrochemical production of hydrogen peroxide (H2 O2 ) from on single-atom catalysts has attracted great attention, yet the quest for robust is driven by achieving >90 % Faradaic efficiency (FE) under industrial-relevant current densities (>100 mA cm-2 ). Herein we synthesize a catalyst that contains single nickel site coordinated four nitrogen and two oxygen atoms (i.e., N4 Ni1 via involving carboxyl functionalized multiwall carbon nanotubes as substrate to provide extra O coordination regular NiN4 site. It cathodic energy approximately 82 H2 FE around 96 at 200 density, outperforming reported electrosynthesis.

Language: Английский

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A general approach to 3D-printed single-atom catalysts

Nature Synthesis, Journal Year: 2023, Volume and Issue: 2(2), P. 129 - 139

Published: Jan. 2, 2023

Language: Английский

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