Role of the Support Effects in Single‐Atom Catalysts

Liu, Huimin; Liu, Chang; Zong, Xing; Wang, Yongfei; Hu, Zhizhi; Zhang, Zhiqiang

doi:10.1002/asia.202201161

Cited by 7 publications

(2 citation statements)

References 152 publications

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“…Despite graphene's advantages, such as good electron conductivity, chemical stability, a relatively high surface area, and the ability to introduce defects, it cannot achieve high metal loading. 21,27,28 Graphene-based SACs usually have metal loadings lower than 5 wt %. Zeolites, having highly ordered networks with decent porosity, various topologies, and good stability, also show low metal loading.…”

Section: Introductionmentioning

confidence: 99%

“…However, most conventional substrates generally suffer from low surface area and weak coordination ability, which easily leads to metal migration/aggregation and causes reactivity decay. Despite graphene’s advantages, such as good electron conductivity, chemical stability, a relatively high surface area, and the ability to introduce defects, it cannot achieve high metal loading. ,, Graphene-based SACs usually have metal loadings lower than 5 wt %. Zeolites, having highly ordered networks with decent porosity, various topologies, and good stability, also show low metal loading .…”

Section: Introductionmentioning

confidence: 99%

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Single-Atom Catalysts on Covalent Organic Frameworks for Energy Applications

Wu,

Wang,

Kim

2024

ACS Appl. Mater. Interfaces

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Single-atom catalysts (SACs) have been investigated and applied to energy conversion devices. However, issues of metal agglomeration, low metal loading, and substrate stability have hindered realization of the SACs' full potential. Recently, covalent organic framework (COF)-based SACs have emerged as promising materials to enable highly efficient catalytic reactions. Here, we summarize the representative COF-based SACs and their wide application in clean energy devices and conversion reactions, such as hydrogen evolution reaction, carbon dioxide reduction reaction, nitrogen reduction reaction, oxygen reduction reaction, and oxygen evolution reaction. Based on their catalysis conditions, these reactions are categorized into photocatalyzed and electrocatalyzed reactions. We also summarize their design strategies, including heteroatom inclusion, donor−acceptor pairs, pore engineering, interface engineering, etc. Although COF-based SACs are promising, more efforts, such as linkage engineering, functional groups, ionization, multifunctional sites for cocatalyzed systems, etc., could improve them to be the ideal SAC materials. At the end, we provide our perspectives on where the field will proceed in the next 5 years.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Single-Atom Catalysts on Covalent Organic Frameworks for Energy Applications

Wu,

Wang,

Kim

2024

ACS Appl. Mater. Interfaces

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Temperature‐Dependent Structures of Single‐Atom Catalysts

Chen,

Zhang,

Wang

et al. 2023

Chemistry An Asian Journal

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Single‐atom catalysts (SACs) have the unique coordination environment and electronic structure due to the quantum size effect, which plays an essential role in facilitating catalytic reactions. However, due to the limited understanding of the formation mechanism of single atoms, achieving the modulation of the local atomic structure of SACs is still difficult and challenging. Herein, we have prepared a series of Ni SACs loaded on nitrogen‐doped carbon substrates with different parameters using a dissolution‐and‐carbonization method to systematically investigate the effect of temperature on the structure of the SACs. The results of characterization and electrochemical measurements are analyzed to reveal the uniform law between temperature and the metal loading, bond length, coordination number, valence state and CO2 reduction performance, showing the feasibility of controlling the structure of SACs through temperature to regulate the catalytic performance. This is important for the understanding of catalytic reaction mechanisms and the design of efficient catalysts.

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Precise Synthesis of Single‐Atom Catalysts for Boosting Next‐Generation Advanced Oxidation and Reduction Processes in Sustainable Energy Applications

Rehman,

Zhao,

Yun

et al. 2024

ChemCatChem

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Single‐atom catalysts (SACs) demonstrate high selectivity, maximal atom utilization, and unique active site configurations, establishing them as a rapidly expanding research field. Understanding the intrinsic relationship between structure and catalytic performance is crucial for the effective use of SACs in catalysis. However, providing a clear explanation of the coordination environment and intrinsic structural regulation of SACs remains a significant challenge for next‐generation renewable energy materials, especially in advanced oxidation and reduction processes critical for sustainable energy applications. This comprehensive review offers an in‐depth overview of the current progress and design of SACs, with a specific focus on precise synthesis, structural control, and the relationship between structure and performance. Furthermore, we elucidate the reaction mechanisms of various catalytic systems and the selective methods used to precisely synthesize and enhance catalytic reactions in the sustainable energy sector. Finally, this review explores the complex challenges in investigating and developing SACs and offers a perspective on solutions in advanced oxidation and reduction technologies for future research to overcome these challenges and achieve practical applications.

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Role of the Support Effects in Single‐Atom Catalysts

Cited by 7 publications

References 152 publications

Single-Atom Catalysts on Covalent Organic Frameworks for Energy Applications

Single-Atom Catalysts on Covalent Organic Frameworks for Energy Applications

Temperature‐Dependent Structures of Single‐Atom Catalysts

Precise Synthesis of Single‐Atom Catalysts for Boosting Next‐Generation Advanced Oxidation and Reduction Processes in Sustainable Energy Applications

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