Interfacial Cladding Engineering Suppresses Atomic Thermal Migration to Fabricate Well‐Defined Dual‐Atom Electrocatalysts

Leng, Kunyue; Zhang, Jianting; Wang, Yi; Li, Dingding; Bai, Lei; Shi, Jingbo; Li, Xin; Zheng, Lirong; Bai, Junhong

doi:10.1002/adfm.202205637

Cited by 31 publications

(27 citation statements)

References 33 publications

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“…To improve the probability of generation of bimetallic binuclear sites in the final materials, binuclear bimetallic complexes can be employed as the precursors and loaded on the solid carrier before the high-temperature pyrolysis treatment (as illustrated in Figure 9). 76 In this way, the intimacy of the two metal atoms will be greatly improved in comparison to the methods in which the metal species are introduced separately. In principle, this strategy can also be extended to generation of bimetallic nanoclusters on the carbon matrix by using multinuclear organometallic complex as the precursor.…”

Section: Direct Immobilizationmentioning

confidence: 99%

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Bimetallic Sites for Catalysis: From Binuclear Metal Sites to Bimetallic Nanoclusters and Nanoparticles

Liu

Corma

2023

Chem. Rev.

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Heterogeneous bimetallic catalysts have broad applications in industrial processes, but achieving a fundamental understanding on the nature of the active sites in bimetallic catalysts at the atomic and molecular level is very challenging due to the structural complexity of the bimetallic catalysts. Comparing the structural features and the catalytic performances of different bimetallic entities will favor the formation of a unified understanding of the structure−reactivity relationships in heterogeneous bimetallic catalysts and thereby facilitate the upgrading of the current bimetallic catalysts. In this review, we will discuss the geometric and electronic structures of three representative types of bimetallic catalysts (bimetallic binuclear sites, bimetallic nanoclusters, and nanoparticles) and then summarize the synthesis methodologies and characterization techniques for different bimetallic entities, with emphasis on the recent progress made in the past decade. The catalytic applications of supported bimetallic binuclear sites, bimetallic nanoclusters, and nanoparticles for a series of important reactions are discussed. Finally, we will discuss the future research directions of catalysis based on supported bimetallic catalysts and, more generally, the prospective developments of heterogeneous catalysis in both fundamental research and practical applications.

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Section: Direct Immobilizationmentioning

confidence: 99%

“…Binuclear bimetallic complexes were loaded on porous metal–organic framework (ZIF-8) as the precursor and then a polydopamine layer was coated on the ZIF-8 particles, before being subjected to high-temperature pyrolysis treatment. Reproduced with permission from ref . Copyright 2022 Wiley-VCH.…”

Section: Synthesis Of Different Types Of Bimetallic Entitiesmentioning

confidence: 99%

Bimetallic Sites for Catalysis: From Binuclear Metal Sites to Bimetallic Nanoclusters and Nanoparticles

Liu

Corma

2023

Chem. Rev.

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“…In another work, Leng et al construct carbon supported dual Fe atom sites for enhanced ORR performance (Figure 16i). [219] The as-prepared Fe DACs show excellent electrocatalytic performance in ORR process with E 1/2 = 0.951 and 0.816 V in alkaline and acidic conditions, respectively, with ultrahigh stability with negligible change after 5000 cycles (Figure 16j-l). DFT results indicated that the well-designed dual Fe sites could efficiently activate O-O bonding, and then facilitating the 4-electron ORR process.…”

Section: Oxygen Reduction Reactionmentioning

confidence: 96%

Microenvironment Engineering of Single/Dual‐Atom Catalysts for Electrocatalytic Application

2023

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Single/dual‐metal atoms supported on carbon matrix can be modulated by coordination structure and neighboring active sites. Precisely designing the geometric and electronic structure and uncovering the structure–property relationships of single/dual‐metal atoms confront with grand challenges. Herein, this review summarizes the latest progress in microenvironment engineering of single/dual‐atom active sites via a comprehensive comparison of single‐atom catalyst (SACs) and dual‐atom catalysts (DACs) in term of design principles, modulation strategy, and theoretical understanding of structure–performance correlations. Subsequently, recent advances in several typical electrocatalysis process are discussed to get general understanding of the reaction mechanisms on finely‐tuned SACs and DACs. Finally, full‐scaled summaries of the challenges and prospects are given for microenvironment engineering of SACs and DACs. This review will provide new inspiration on the development of atomically dispersed catalysts for electrocatalytic application.

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“…discovered that Fe—Fe atom pair had less antibonding orbital filling and more positive average d‐band center relative to that of single atom Fe catalyst, which could facilitate electron transfer to oxygen and then activate the O—O bond. [ 54 ]…”

Section: Modification Engineering In the Active Centermentioning

confidence: 99%

Atomic‐Level Interface Engineering for Boosting Oxygen Electrocatalysis Performance of Single‐Atom Catalysts: From Metal Active Center to the First Coordination Sphere

Jiang

et al. 2022

Advanced Science

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Oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) are the core reactions of a series of advanced modern energy and conversion technologies, such as fuel cells and metal-air cells. Among all kinds of oxygen electrocatalysts that have been reported, single-atom catalysts (SACs) offer great development potential because of their nearly 100% atomic utilization, unsaturated coordination environment, and tunable electronic structure. In recent years, numerous SACs with enriched active centers and asymmetric coordination have been successfully constructed by regulating their coordination environment and electronic structure, which has brought the development of atomic catalysts to a new level. This paper reviews the improvement of SACs brought by atom-level interface engineering. It starts with the introduction of advanced techniques for the characterizations of SACs. Subsequently, different design strategies that are applied to adjust the metal active center and first coordination sphere of SACs and then enhance their oxygen electrocatalysis performance are systematically illustrated. Finally, the future development of SACs toward ORR and OER is discussed and prospected.

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Interfacial Cladding Engineering Suppresses Atomic Thermal Migration to Fabricate Well‐Defined Dual‐Atom Electrocatalysts

Cited by 31 publications

References 33 publications

Bimetallic Sites for Catalysis: From Binuclear Metal Sites to Bimetallic Nanoclusters and Nanoparticles

Bimetallic Sites for Catalysis: From Binuclear Metal Sites to Bimetallic Nanoclusters and Nanoparticles

Microenvironment Engineering of Single/Dual‐Atom Catalysts for Electrocatalytic Application

Atomic‐Level Interface Engineering for Boosting Oxygen Electrocatalysis Performance of Single‐Atom Catalysts: From Metal Active Center to the First Coordination Sphere

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