η‐Carbides (Co, Mo, or W) Nanoparticles from Octacyanometalates Precursors‐Based Network - Archive ouverte HAL Access content directly
Journal Articles Small Year : 2023

η‐Carbides (Co, Mo, or W) Nanoparticles from Octacyanometalates Precursors‐Based Network

Abstract

This paper describes a simple, two-steps chemical pathway to obtain bimetallic carbide nanoparticles (NPs) of general formula MxM″yC, also called η-carbides. This process allows for a control of the chemical composition of metals present in the carbides (M = Co and M″ = Mo or W). The first step involves the synthesis of a precursor consisting of a network of octacyanometalates. The second step consists in a thermal degradation of the previously obtained octacyanometalates networks under neutral atmosphere (Ar or N2). It is shown that this process results in the formation of carbide NPs with diameter of ≈ 5nm, and the stoichiometries Co3M’3C, Co6M’6C, Co2M’4C for the Cs-Co-M’ systems.
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Friday, November 8, 2024
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Friday, November 8, 2024
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Dates and versions

hal-04305030 , version 1 (28-11-2023)

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Thomas Blin, Armelle Girard, Frédéric Fossard, Nathalie Guillou, Laure Catala, et al.. η‐Carbides (Co, Mo, or W) Nanoparticles from Octacyanometalates Precursors‐Based Network. Small, 2023, 19 (37), ⟨10.1002/smll.202301299⟩. ⟨hal-04305030⟩
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