Emerging single-atom catalysts in the detection and purification of contaminated gases

Liu, Lingyue; Yung, Ka-Fu; Yang, Hongbin; Liu, Bin

doi:10.1039/d4sc01030b

Chem. Sci.

2024

DOI: 10.1039/d4sc01030b

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Emerging single-atom catalysts in the detection and purification of contaminated gases

Lingyue Liu,

Ka-Fu Yung,

Hongbin Yang

et al.

Abstract: Single atom catalysts (SACs) show exceptional molecular adsorption and electron transfer capabilities owing to their remarkable atomic efficiency and tunable electronic structure, thereby providing promising solutions for diverse important processes...

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Cited by 2 publications

References 224 publications

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Atomic Cobalt Metal Centers with Asymmetric N/B‐Coordination for Promoting Oxygen Reduction Reaction

Guan,

Liu,

et al. 2024

Adv Funct Materials

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Cobalt single atom catalysts (SACs) have exhibited promising performance in both the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER), positioning them as potential dual‐functional catalysts for Zn‐air battery. However, the long‐standing challenge lies in achieving satisfactory dual‐functionality and stability of these SACs. In this study, to optimize the 4e‒ ORR performance, boron (B) atoms are employed with low electronegativity to regulate the structure of the Co–N–C catalytic center. This resulted in the formation of an asymmetrically coordinated Co metal center catalyst (Co‐N3B). Compared to the Co‐N4, Co‐N3B exhibited lower free energy for ORR and stronger adsorption energy toward *O species, effectively suppressing the 2e‒ ORR pathway at the cobalt site and preventing catalyst corrosion induced by hydrogen peroxide (H2O2) in ORR reactions, thereby enhancing catalyst stability. In situ attenuated total reflectance surface‐enhanced infrared absorption spectroscopy (ATR‐SEIRAS) further validated excellent interaction between Co active centers and O intermediates. Furthermore, the self‐made rechargeable zinc‐air battery demonstrated remarkable discharge peak power density (≈253 mW cm‒2), energy density (≈819 mAh g‒1), and cyclic stability exceeding 110 h. This study provides new insights into constructing catalysts with atomic‐level precision and offers strong references for practical applications in energy storage and convension electrocatalysts.

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Atomic Cobalt Metal Centers with Asymmetric N/B‐Coordination for Promoting Oxygen Reduction Reaction

Guan,

Liu,

et al. 2024

Adv Funct Materials

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Electronic nose for the detection and discrimination of volatile organic compounds: Application, challenges, and perspectives

Li,

Wang,

Zhao

et al. 2024

TrAC Trends in Analytical Chemistry

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Emerging single-atom catalysts in the detection and purification of contaminated gases

Abstract: Single atom catalysts (SACs) show exceptional molecular adsorption and electron transfer capabilities owing to their remarkable atomic efficiency and tunable electronic structure, thereby providing promising solutions for diverse important processes...

Cited by 2 publications

References 224 publications

Atomic Cobalt Metal Centers with Asymmetric N/B‐Coordination for Promoting Oxygen Reduction Reaction

Atomic Cobalt Metal Centers with Asymmetric N/B‐Coordination for Promoting Oxygen Reduction Reaction

Electronic nose for the detection and discrimination of volatile organic compounds: Application, challenges, and perspectives

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