Heterogeneous activation of Oxone® by magnetic nanoparticles anchoring Schiff base complexes for water treatment

سال انتشار: 1397
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 249

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شناسه ملی سند علمی:

IRANCC20_109

تاریخ نمایه سازی: 28 اردیبهشت 1398

چکیده مقاله:

Decolorization of synthetic dyes, as potential environmental pollutants, attracted considerable attention in the past two decades. Schiff base compounds and their complexes are known as good candidates for variety of industrial applications such as pharmaceutical, magnetism and oxidation catalysis of organic compounds. In addition, they have been frequently used for removal of dyes from industrial waste water. But, there are a few studies devoted to the development of a novel approach of using Schiff base complexes as heterogeneous catalysts for degradation of various dyes [1-3]. In this work, a simple Schiff base complex immobilized coordinatively on functionalized magnetic nanoparticles and its structure was confirmed by different techniques. The heterogeneous magnetic catalyst showed an effective catalytic activity toward dyes degradation under oxidation conditions (Scheme 1). The catalyst proved to be recyclable for at least five runs while its structure remained intact. Moreover, magnetism study demonstrated that the catalyst preserved its superparamagnetic property. These benefits for such a heterogeneous system make it amenable to scalability readily, so that the method worked well in a semi scale up of 50 ppm of aqueous solution of dyes. The reactions were carried out in a 50 ml stock water solution of dye. Reaction samples were taken at regular intervals to monitor the absorbance changes of dye using a UV-vis spectrophotometer

نویسندگان

Fateme Boshgazi

Catalysis Research Laboratory, Department of Chemistry, Faculty of Science, University of Birjand,Birjand, Iran

Abdolreza Rezaeifard

Catalysis Research Laboratory, Department of Chemistry, Faculty of Science, University of Birjand,Birjand, Iran

Maasoumeh Jafarpour

Catalysis Research Laboratory, Department of Chemistry, Faculty of Science, University of Birjand,Birjand, Iran