ВІДНОВЛЕННЯ п-НІТРОАНІЛІНА ЗА ДОПОМОГОЮ РОСЛИННИХ СПОЛУЧНИКІВ Co-NPs: ЕКОЛОГІЧНА ПЕРСПЕКТИВА

Abstract

Cobalt nanoparticles (Co-NP's) were used as an eco-friendly catalyst in a green approach format in water at room temperature to accomplish an efficient chemoselective reduction of p-nitroaniline. The product of this chemical reduction, p-phenylenediamine, is an attractive intermediate in the preparation of polymers, hair dyes, and rubber products. Hence, there is a great demand to develop effective catalysts for this chemical reduction of pnitroanilines. The reactions can be recommended for use, since the catalysts are reusable and the reactions are high yielding (around 90 %). Co nanoparticles of different concentrations were synthesized and used as a catalyst in the reduction of p-nitroaniline with NaBH4 to p-phenylenediamine. It was observed that the reaction rate was high with the low concentrated sample compared to other high concentrated samples because of their size. The reusability of 1 mM nanoparticles shows that they are a potential catalyst suitable for industrial reuse.