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<p>Nanoscale cobalt oxide with particle size of 12–17 nm was prepared via a facile calcination route using cobalt fumarate as the precursor. The one-step method involves the simple calcination of cobalt fumarate precursor at temperatures 400–600°C. The crystallographic phase purity and other microstructural characteristics are thoroughly investigated using several physical techniques, including, powder XRD, SEM, TEM, and UV-visible and IR spectroscopy. Among the prepared oxides, Ru-supported Co<sub>3</sub>O<sub>4</sub> demonstrated remarkable catalytic activity in the oxidation of benzyl alcohol using TBHP as an oxidant. The Ru-supported catalyst gives 95% alcohol conversion with 97% selectivity for benzaldehyde and can be recycled for several consecutive runs without major loss of activity.</p> Graphical abstract <p>Cobalt fumarate precursor is calcined at four different temperatures <i>viz.</i> 400–600°C to synthesize nanoscale cobalt oxide. The trace of Ru is doped to enhance the catalytic performance of cobalt oxide in the oxidation of benzyl alcohol using TBHP. Ru@Co<sub>3</sub>O<sub>4</sub> gives almost complete alcohol conversion with excellent selectivity for benzaldehyde and reusability.</p>

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Facile synthesis of nanostructured Co3O4 using cobalt fumarate as the precursor and its catalytic exploration in the selective oxidation of benzyl alcohol

  • 期刊论文

  • 发表日期：

    2025年3月14日

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  • Ruhul Amin Bepari,
  • Monsumi Gogoi,
  • Nabajyoti Mochahari,
  • Saurav Paul,
  • Birinchi Kumar Das

摘要

Nanoscale cobalt oxide with particle size of 12–17 nm was prepared via a facile calcination route using cobalt fumarate as the precursor. The one-step method involves the simple calcination of cobalt fumarate precursor at temperatures 400–600°C. The crystallographic phase purity and other microstructural characteristics are thoroughly investigated using several physical techniques, including, powder XRD, SEM, TEM, and UV-visible and IR spectroscopy. Among the prepared oxides, Ru-supported Co3O4 demonstrated remarkable catalytic activity in the oxidation of benzyl alcohol using TBHP as an oxidant. The Ru-supported catalyst gives 95% alcohol conversion with 97% selectivity for benzaldehyde and can be recycled for several consecutive runs without major loss of activity.

Graphical abstract

Cobalt fumarate precursor is calcined at four different temperatures viz. 400–600°C to synthesize nanoscale cobalt oxide. The trace of Ru is doped to enhance the catalytic performance of cobalt oxide in the oxidation of benzyl alcohol using TBHP. Ru@Co3O4 gives almost complete alcohol conversion with excellent selectivity for benzaldehyde and reusability.