Design of bifunctional single-atom catalysts NiSA/ZIF-300 for CO2 conversion by ligand regulation strategy
Carbon-supported noble-metal-free single-atom catalysts (SACs) have aroused widespread interest due to their green chemistry aspects and excellent performances. Herein, we propose a “ligand regulation strategy” and achieve the successful fabrication of bifunctional SAC/MOF (MOF = metal–organic frame...
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Published in | Nano research Vol. 17; no. 5; pp. 3827 - 3834 |
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Main Authors | , , , , , , , , , , |
Format | Journal Article |
Language | English |
Published |
Beijing
Tsinghua University Press
01.05.2024
Springer Nature B.V |
Subjects | |
Online Access | Get full text |
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Summary: | Carbon-supported noble-metal-free single-atom catalysts (SACs) have aroused widespread interest due to their green chemistry aspects and excellent performances. Herein, we propose a “ligand regulation strategy” and achieve the successful fabrication of bifunctional SAC/MOF (MOF = metal–organic framework) nanocomposite (abbreviated NiSA/ZIF-300; ZIF = ZIF-8) with exceptional catalytic performance and robustness. The designed NiSA/ZIF-300 has a planar interfacial structure with the Ni atom, involving one S and three N atoms bonded to Ni(II), fabricated by controllable pyrolysis of volatile Ni-S fragments. For CO
2
cycloaddition to styrene epoxide, NiSA/ZIF-300 exhibits ultrahigh activity (turnover number (TON) = 1.18 × 10
5
; turnover frequency (TOF) = 9830 mol
SC
·mol
Ni
−1
·h
−1
; SC = styrene carbonate) and durability at 70 °C under 1 atm CO
2
pressure, which is much superior to Ni complex/ZIF, NiNP/ZIF-300, and most reported catalysts. This study offers a simple method of bifunctional SAC/MOF nanocomposite fabrication and usage, and provides guidance for the precise design of additional original SACs with unique catalytic properties. |
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ISSN: | 1998-0124 1998-0000 |
DOI: | 10.1007/s12274-023-6334-2 |