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首页> 外文期刊>Journal of the Chemical Society of Pakistan >A Facile Approach of Preparing Nickel Nanoparticles on Porous Silicon Surface and its Catalytic Activities on Reducing of Nitroaromatics
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A Facile Approach of Preparing Nickel Nanoparticles on Porous Silicon Surface and its Catalytic Activities on Reducing of Nitroaromatics

机译：一种在多孔硅表面制备镍纳米粒子的简便方法及其催化还原硝基芳烃的活性

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摘要

A facile approach of preparing nickel nanoparticles (Ni NPs) on porous silicon (PSi) surface and the catalysis towards reduction of nitroaromatics are depicted in this work in detail. When the PSi chip was immersed in the mixture of 40 % ammonium fluoride and 0.02 M nickel sulfate solutions with volume ratio of 1:1 at 60°C for 15 min, a large number of Ni NPs were generated on PSi surface, which exhibited high catalytic activities on reducing nitro groups of aromatics in the presence of sodium borohydride at ambient temperature. A suggested mechanism of Ni NPs generation on PSi surface was put forward according to theoretical and experimental analyses. The resultant Ni NPs on PSi surface were demonstrated with scanning electron microscopy and the reducing reactions are monitored with ultraviolet-visible spectroscopy.
机译：在这项工作中详细描述了一种在多孔硅（PSi）表面上制备镍纳米颗粒（Ni NPs）的简便方法以及催化还原硝基芳族化合物的方法。当将PSi芯片在60°C的体积比为1：1的40％氟化铵和0.02 M硫酸镍溶液的混合物中浸泡15分钟时，在PSi表面产生大量的Ni NP，表现出较高的在室温下，在硼氢化钠存在下，催化还原芳香族化合物的硝基的活性。根据理论和实验分析，提出了在PSi表面生成Ni NPs的机理。用扫描电子显微镜证实了在PSi表面上产生的Ni NPs，并用紫外-可见光谱法监测了还原反应。

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