Soft template-directed interlayer confinement synthesis of a Fe-Co dual single-atom catalyst for Zn-air batteries

Wu, Yunyan; Ye, Caichao; Yu, Lei; Liu, Yifan; Huang, Jiaqi; Bi, Jiabao; Li, Xue; Sun, Jingweng; Yang, Juan; Zhang, Wenqing; Wang, Xin; Xiong, Pan; Zhu, Jun

doi:10.1016/j.ensm.2021.12.029

Cited by 121 publications

(48 citation statements)

References 42 publications

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“…A new population of catalysts with two or more isolated metal centers working cooperatively is emerging which can overcome the issue of isolated centers and mimics more complex biological systems. Many homo and heteronuclear DSACs have been designed recently demonstrating superior performance for various applications. , The cooperative interaction in two SA sites can impart an activity and selectivity that is not possible even after doubling-tripling the concentration of SACs. For example, iridium SA pinned on TiO 2 (Ir 1 /TiO 2 ) displayed 38% selectivity and 87% conversion toward nitro-styrene reduction, while Mo SA on TiO 2 (Mo 1 /TiO 2 ) was almost inactive for the reaction.…”

Section: Single Atom Catalysts: Biomimetic Catalyst For Ch4ormentioning

confidence: 99%

Single Atom Catalysts for Selective Methane Oxidation to Oxygenates

Kumar

Al‐Attas

et al. 2022

ACS Nano

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Direct conversion of methane (CH 4 ) to C 1−2 liquid oxygenates is a captivating approach to lock carbons in transportable value-added chemicals, while reducing global warming. Existing approaches utilizing the transformation of CH 4 to liquid fuel via tandemized steam methane reforming and the Fischer−Tropsch synthesis are energy and capital intensive. Chemocatalytic partial oxidation of methane remains challenging due to the negligible electron affinity, poor C−H bond polarizability, and high activation energy barrier. Transition-metal and stoichiometric catalysts utilizing harsh oxidants and reaction conditions perform poorly with randomized product distribution. Paradoxically, the catalysts which are active enough to break C−H also promote overoxidation, resulting in CO 2 generation and reduced carbon balance. Developing catalysts which can break C−H bonds of methane to selectively make useful chemicals at mild conditions is vital to commercialization. Single atom catalysts (SACs) with specifically coordinated metal centers on active support have displayed intrigued reactivity and selectivity for methane oxidation. SACs can significantly reduce the activation energy due to induced electrostatic polarization of the C−H bond to facilitate the accelerated reaction rate at the low reaction temperature. The distinct metal−support interaction can stabilize the intermediate and prevent the overoxidation of the reaction products. The present review accounts for recent progress in the field of SACs for the selective oxidation of CH 4 to C 1−2 oxygenates. The chemical nature of catalytic sites, effects of metal−support interaction, and stabilization of intermediate species on catalysts to minimize overoxidation are thoroughly discussed with a forward-looking perspective to improve the catalytic performance.

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Section: Single Atom Catalysts: Biomimetic Catalyst For Ch4ormentioning

confidence: 99%

Single Atom Catalysts for Selective Methane Oxidation to Oxygenates

Kumar

Al‐Attas

et al. 2022

ACS Nano

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“…The techniques of electrospinning, 181 ball-milling, 182 soft template-directed interlayer confinement, 183 mass-selected soft landing, 33 etc. are also promising for preparing multi-atom cluster catalysts.…”

Section: Preparation Methods Of Multi-atom Cluster Catalystsmentioning

confidence: 99%

Multi-atom cluster catalysts for efficient electrocatalysis

2022

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“…Consequently, it is the predominant hindrance to establishing a robust dual‐site catalyst with the assistance of typical 2D templates for boosted catalytic activity. A recent study proposed a soft template‐directed interlayer confinement protocol for synthesizing a Fe‐Co dual‐site catalyst 131 . In particular, a 2D soft template was formed via a self‐assembly method of amphiphiles into a lamellar micelle.…”

Section: Promotional Strategies To Improve the Orr On Dual‐metal Sitesmentioning

confidence: 99%

“…Incorporation of light heteroatoms with lone pairs of electrons is an effective strategy to manipulate the configuration of active sites through partial substitution of carbon atoms, which could induce the redistribution of charge density at the active moieties and provide favorable interaction between metal sites and adjacent coordination ligands. 58,108,131,132 In addition to N coordination, other pblock elements such as S and P have also been adopted as anchoring sites due to their larger atomic radius and lower electronegativity than N. 133 Their optimal doping into the carbon substrate introduces structural defects on the sp 2 hybridized carbon atoms. It promotes the binding toward reactant molecules, thus positively contributing to the ORR process.…”

Section: Heteroatom Doping Effectmentioning

confidence: 99%

Atomically dispersed dual‐metal‐site PGM‐free electrocatalysts for oxygen reduction reaction: Opportunities and challenges

Yang

Priest

Hou

et al. 2022

SusMat

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Atomically dispersed and nitrogen coordinated single metal site (MNx, M = Fe, Co, or Mn) moieties embedded in partially graphitized carbon (denoted as M–N–C) are recognized as the most promising platinum group metal‐free catalysts for the oxygen reduction reaction (ORR) in proton exchange membrane fuel cells. However, simply regulating their coordination environments and local structures of single metal sites cannot fundamentally change active site structure, which leads to insufficient activity and stability. A second transition metal can be incorporated to design dual‐metal sites, offering a new opportunity to modulate the electronic and geometric structures of M–N–C catalysts. Therefore, exploring optimal atomically dispersed dual‐metal‐site is essential to designing new active sites with enhanced ORR activity, and stability, especially breaking the activity‐stability trade‐off. This review provides a comprehensive analysis of the advances in developing atomically dispersed dual‐metal site catalysts for the ORR, including innovative synthesis methods, primary structural configurations, and the mechanisms to promote catalytic performance. We aim to elucidate the crucial structure–property correlation, emphasizing the inherent electronic and geometric effects of dual metal sites. Finally, we discuss the current challenges of dual‐metal site catalysts concerning rational design, precise synthesis, and high‐fidelity structural characterization.

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Soft template-directed interlayer confinement synthesis of a Fe-Co dual single-atom catalyst for Zn-air batteries

Cited by 121 publications

References 42 publications

Single Atom Catalysts for Selective Methane Oxidation to Oxygenates

Single Atom Catalysts for Selective Methane Oxidation to Oxygenates

Multi-atom cluster catalysts for efficient electrocatalysis

Atomically dispersed dual‐metal‐site PGM‐free electrocatalysts for oxygen reduction reaction: Opportunities and challenges

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