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Synthesis of gold nanoparticles decorated on sulfonated three‐dimensional graphene nanocomposite and application as a highly efficient and recyclable heterogeneous catalyst for Ullmann homocoupling of aryl iodides and reduction of p‐nitrophenol
Authors:Minoo Dabiri  Seyede Razie Banifatemi Kashi  Noushin Farajinia Lehi  Sahareh Bashiribod
Institution:Faculty of Chemistry, Shahid Beheshti University, Tehran, Islamic Republic of Iran
Abstract:Gold nanoparticles were decorated onto sulfonated three‐dimensional graphene (3DG‐SO3H) through spontaneous chemical reduction of HAuCl4 by 3DG‐SO3H. This nanocomposite exhibited excellent catalytic activity for the synthesis of symmetric biaryls via the Ullmann homocoupling of aryl iodides in an aqueous medium. Additionally, this nanocomposite was used as a catalyst for the reduction of p‐nitrophenol to p‐aminophenol. The catalyst could be used more than six times successively without significant deactivation.
Keywords:gold  heterogeneous catalyst  homocoupling  reduction  three‐dimensional graphene
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