Polyelectrolyte encapsulated gold nanoparticles as efficient active catalyst for reduction of nitro compounds by kinetic method

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• 作者：Pitchaimani Veerakumar ; Murugesan Velayudham ; Kuang-Lieh Lu ; Seenivasan Rajagopal
• 关键词：AuNPs ; Polyethylenimine ; Nitrophenol ; NaBH4 ; Reduction
• 刊名：Applied Catalysis A: General
• 出版年：2012
• 出版时间：10 October, 2012
• 年：2012
• 卷：439-440
• 期：Complete
• 页码：197-205
• 全文大小：2333 K

文摘

This paper is focused on the synthesis of gold nanoparticles (AuNPs) using highly branched polyethylenimine (PEI) and acylated polyethylenimine (PEI-C₁₂) as reducing as well as stabilizing agent and their role as catalysts. The AuNPs are characterized by XRD, TEM, HRTEM, AFM, UV-vis and FT-IR techniques. The AuNPs, in a PEI polyelectrolyte matrix, is found to be a stable and active catalyst for the selective reduction of nitro compounds using NaBH₄ under mild reaction conditions. This catalytic system is stable for several months without any obvious colloidal aggregation.