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Title Rice husk-SiO2 supported bimetallic Fe–Ni nanoparticles: As a new, powerful magnetic nanocomposite for the aqueous reduction of nitro compounds to amines
Type JournalPaper
Keywords nanocomposite, Rice husk, sodium borohydride, bimetallic Fe/Ni, heterogeneous catalyst
Abstract This paper reports, the providing of novel green procedure for immobilization of bimetallic Fe/Ni on amorphous silica nanoparticles extracted from rice husk (RH-SiO2). The heterogeneous nanocomposite (Fe/Ni@RH-SiO2) was identified using SEM, EDX, TEM, BET, H2-TPR, TGA, XRD, VSM, ICP-OES, and FT-IR analyses. The Fe/Ni@RH-SiO2 nanocomposite was applied as powerful catalyst for the reduction of structurally diverse nitro compounds with sodium borohydride (NaBH4) in green conditions. This procedure suggests some benefits as green chemistry-based properties, short reaction times, non-explosive materials, easy to handle, fast separation and simple work-up method. The catalyst was separated by an external magnet from the reaction mixture and was reused for 9 successive cycles with no detectable changes of its catalytic efficiency.
Researchers Rooya Mozafari (Third Researcher), Mohammad Ghadermazi (First Researcher), Setareh Moradi (Second Researcher)