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Optimized Dispersion and Stability of Hybrid Fe3O4/Pd Catalysts in Water for Suzuki Coupling Reactions: Impact of Organic Capping Agents

Authors

  • Hyunje Woo,

    1. Department of Chemistry and Chemistry Institute for Functional Materials, Pusan National University, Busan 609-735 (Republic of Korea)
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  • Kyoungho Lee,

    1. Department of Chemistry and Chemistry Institute for Functional Materials, Pusan National University, Busan 609-735 (Republic of Korea)
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  • Prof. Kang Hyun Park

    Corresponding author
    1. Department of Chemistry and Chemistry Institute for Functional Materials, Pusan National University, Busan 609-735 (Republic of Korea)
    • Department of Chemistry and Chemistry Institute for Functional Materials, Pusan National University, Busan 609-735 (Republic of Korea)===

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Abstract

Pd nanoparticles were easily immobilized on Fe3O4 microspheres without any treatment such as functionalization with organic groups. The Fe3O4 microspheres were synthesized by using different capping agents, and the effect of the capping agents on the dispersion stability and catalytic activity of the Fe3O4/Pd composite for Suzuki coupling reactions in water were evaluated. The catalytic activity varied depending on the dispersion stability of Fe3O4/Pd catalysts in water. The Pd nanoparticles immobilized onto Fe3O4 microspheres capped with trisodium citrate showed strong dispersion stability in water over the reaction duration of seven days (at pH 7), high catalytic activity, and recyclability under mild conditions.

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