Zhang W, Wu W, Guo F, Dong X. Fe
3C nanoclusters integrated with Fe single-atom planted in nitrogen doped carbon derived from truncated hexahedron zeolitic imidazolate framework for the efficient transfer hydrogenation of halogenated nitrobenzenes.
J Colloid Interface Sci 2023;
640:1068-1079. [PMID:
36924629 DOI:
10.1016/j.jcis.2023.03.006]
[Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Revised: 02/22/2023] [Accepted: 03/01/2023] [Indexed: 03/18/2023]
Abstract
The control of morphology, structure and composition of metal-organic frameworks derived metal-nitrogen doped porous carbon (M-N-C) with high precision and accuracy is essential for the catalytic performance. While single-atom or small-sized nanometer catalysts show notable effects in catalysis, one catalyst combining the advantages of single-atom and nanometer catalysts may cultivate more benefits. Herein, we designed and successfully fabricated a series of Fe-doped ZIF-x with different morphologies (cube→truncated hexahedron→truncated octahedron) in one pot by simply adjusting the adding amount of vitamin C. After high-temperature calcination, Fe3C integrated with Fe single-atom planted in N-doped carbon (FeSA/FeNC-N-C-x) with various morphology, structure and composition could be acquired. Among them, FeSA/FeNC-N-C-0.75 exhibited the best catalytic performance for the transfer hydrogenation of halogenated nitrobenzenes with N2H4·H2O under room temperature. Acid-leaching tests, poisoning experiments, and the density functional theory calculations showed that Fe3C integrated with Fe single-atom had a better catalytic effect than the separated Fe3C or Fe single-atom.
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