Precise and scalable fabrication of metal pair-site catalysts enabled by intramolecular integrated donor atoms

Chen, Yuqing; Qiao, Shushan; Tang, Yanhong; Du, Yi; Zhang, Danyu; Wang, Wenjie; Xie, Haijiao; Liu, Chengbin

doi:10.1039/d2ta06091d

Cited by 6 publications

(5 citation statements)

References 69 publications

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“…Two areas with coupled bright dots (marked as P1 and P2) and one background area without bright dots (marked as P3) were selected to carry out the EELS. In area P1 and P2, both Cu and Mn signals can be detected, the P3 area shows no signal for metal elements, which confirm the formation of Cu/Mn dual-atomic sites in the materials [29].…”

Section: High-angle Annular Dark-field Scanning Transmission Electron...mentioning

confidence: 80%

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Heteronuclear Dual Metal Atom Electrocatalysts for Water-Splitting Reactions

Lu,

2024

Preprint

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Hydrogen is considered as an ideal substitute to the traditional fossil fuels because of its widespread sources, high calorific value of combustion, and zero carbon emissions. The electrocatalytic water-splitting to produce hydrogen is also deemed to be the best approach, however, it is a challenge to make high-efficient and low-cost electrocatalysts. Single-atom catalysts (SACs) are considered the most promising candidate to replace the traditional noble-metal catalysts. Compared with SACs, the dual-atom catalysts (DACs) are of greater attraction including higher metal loading, more versatile active sites, and excellent catalytic activity. In the review, several general synthetic strategies and structural characterization methods of DACs are introduced, and the mechanisms of hydrogen evolution reaction (HER) and oxygen evolution reactions (OER) are discussed. The authors hope that the review has given some insights and inspiration to the researchers about DACs in electrocatalytic water-splitting.

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Section: High-angle Annular Dark-field Scanning Transmission Electron...mentioning

confidence: 80%

“…Followed by etching in acid solution, the DACs with N, S-carbon coordinated uniform (Cu, Mn) atom pairs was prepared on a gram-scale. Compared to other methods, it is a clean and easily scaling-up method for preparing heterogeneous catalysts at high productivity of kilogram level [29].…”

Section: Ball-millingmentioning

confidence: 99%

Heteronuclear Dual Metal Atom Electrocatalysts for Water-Splitting Reactions

Lu,

2024

Preprint

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“…For over a decade, significant advancements have been accomplished in the structural design and fundamental electrocatalytic investigation of SACs as next-generation catalysts with a maximum of nearly 100% atomic utilization [ 139 , 140 , 141 ]. However, for the CO 2 RR, the simplicity of the conventional MN 4 structure severely restricts the substantial improvement of its electrocatalytic activity.…”

Section: Discussionmentioning

confidence: 99%

Asymmetric Coordination Environment Engineering of Atomic Catalysts for CO2 Reduction

et al. 2023

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Single-atom catalysts (SACs) have emerged as well-known catalysts in renewable energy storage and conversion systems. Several supports have been developed for stabilizing single-atom catalytic sites, e.g., organic-, metal-, and carbonaceous matrices. Noticeably, the metal species and their local atomic coordination environments have a strong influence on the electrocatalytic capabilities of metal atom active centers. In particular, asymmetric atom electrocatalysts exhibit unique properties and an unexpected carbon dioxide reduction reaction (CO2RR) performance different from those of traditional metal-N4 sites. This review summarizes the recent development of asymmetric atom sites for the CO2RR with emphasis on the coordination structure regulation strategies and their effects on CO2RR performance. Ultimately, several scientific possibilities are proffered with the aim of further expanding and deepening the advancement of asymmetric atom electrocatalysts for the CO2RR.

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“…Additionally, the unique electronic and structural properties of the bimetallic SACMs contribute to enhanced stability and durability, making them promising candidates for advanced ORR applications. [220,221] The intrinsic activity of individual atoms may be compromised due to their interactions with neighboring atoms and support materials. [222] In MSACMs, indepth experimental verification and analysis of the synergistic effect between the same or different metal atoms are required.…”

Section: Engineering Of Single-atom Active Sitesmentioning

confidence: 99%

Precise Design and Modification Engineering of Single‐Atom Catalytic Materials for Oxygen Reduction

Zhang,

Liu,

Liu

et al. 2023

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Due to their unique electronic and structural properties, single‐atom catalytic materials (SACMs) hold great promise for the oxygen reduction reaction (ORR). Coordinating environmental and engineering strategies is the key to improving the ORR performance of SACMs. This review summarizes the latest research progress and breakthroughs of SACMs in the field of ORR catalysis. First, the research progress on the catalytic mechanism of SACMs acting on ORR is reviewed, including the latest research results on the origin of SACMs activity and the analysis of pre‐adsorption mechanism. The study of the pre‐adsorption mechanism is an important breakthrough direction to explore the origin of the high activity of SACMs and the practical and theoretical understanding of the catalytic process. Precise coordination environment modification, including in‐plane, axial, and adjacent site modifications, can enhance the intrinsic catalytic activity of SACMs and promote the ORR process. Additionally, several engineering strategies are discussed, including multiple SACMs, high loading, and atomic site confinement. Multiple SACMs synergistically enhance catalytic activity and selectivity, while high loading can provide more active sites for catalytic reactions. Overall, this review provides important insights into the design of advanced catalysts for ORR.

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Precise and scalable fabrication of metal pair-site catalysts enabled by intramolecular integrated donor atoms

Abstract: The precise configuration of metal pair sites at atomic level in dual-metal single atom catalysts (DACs) is key but challenging. Herein, we correlate the heteronuclear metal pair-site with intrinsic structure...

Cited by 6 publications

References 69 publications

Heteronuclear Dual Metal Atom Electrocatalysts for Water-Splitting Reactions

Heteronuclear Dual Metal Atom Electrocatalysts for Water-Splitting Reactions

Asymmetric Coordination Environment Engineering of Atomic Catalysts for CO2 Reduction

Precise Design and Modification Engineering of Single‐Atom Catalytic Materials for Oxygen Reduction

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