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首页> 外文期刊>Catalysis science & technology >Magnetically separable core-shell iron oxide@nickel nanoparticles as high-performance recyclable catalysts for chemoselective reduction of nitroaromatics
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Magnetically separable core-shell iron oxide@nickel nanoparticles as high-performance recyclable catalysts for chemoselective reduction of nitroaromatics

机译：磁性可分离的核壳氧化铁@镍纳米颗粒作为高性能可回收催化剂，用于化学选择性降低硝化芳香集

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摘要

A magnetically separable core-shell iron oxide@nickel (IO@Ni) nanocatalyst was synthesized by reduction of Ni2+ ions in the presence of iron oxide (Fe2+, Fe3+) by a simple one-pot synthetic route using NaBH4 as a reducing agent and starch as a capping agent. The synthesized nanoparticles (NPs) were characterized by several techniques such as X-ray diffraction (XRD), high resolution transmission electron microscopy (HR-TEM), selected area electron diffraction (SAED), and energy dispersive X-ray spectroscopy (EDS). The core-shell iron oxide@nickel nanoparticles (IO@NiNPs) were found to have excellent activity for the hydrogenation reactions of aromatic nitro compounds under mild conditions using water as a green solvent. Excellent chemoselectivity and recyclability up to 30 cycles for the nitro group reduction was demonstrated.
机译：磁性可分离的核壳氧化铁@Nickel（io@ni）纳米催化剂通过在氧化铁（Fe2+，Fe3+）存在下通过简单的单锅合成途径使用NABH4作为减少剂和降低剂和淀粉的简单单锅合成途径而合成Ni2+离子。 作为上限代理。 合成的纳米颗粒（NP）的特征是多种技术，例如X射线衍射（XRD），高分辨率透射电子显微镜（HR-TEM），选定的区域电子衍射（SAED）和能量分散X射线光谱（EDS） 。 发现氧化铁@镍纳米颗粒（IO@ninps）在轻度条件下使用水作为绿色溶剂的芳族硝基化合物的氢化反应具有出色的活性。 证明了优异的化学选择性和可回收性可用于硝基减少的30个周期。

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