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Removal of hazardous pollutants from wastewater: Catalytic applications of Mg nanoparticle functionalized aminoclay

Highlights•Mg-AC was used for the catalytic reduction of Cr(VI), p-nitrophenol and FR dye.•In 5 min, 100% of Cr(VI), NP and FR dye were reduced into non-toxic products.•99.8% of FR dye (8 min) and 98% of NP (5 min) were reduced in the mixture system.•95% of FR &100% of Cr(VI) & NP (13 min) were reduced in the three pollutants system.•There is no decrement in the efficiency of the catalyst even after number of cycles.AbstractMg nanoparticle functionalized aminoclay (AC) was prepared to assess its catalytic behavior towards the reduction process. The above synthesized colorless material was analyzed with FTIR spectroscopy, (functional group identification), UV Visible spectroscopy, FESEM, EDX measurement (surface analysis), XRD, HRTEM (size determination), DSC and TGA. The FTIR spectrum showed a peak at 556 cm−1 corresponding to the Mg–N stretching. The catalytic efficiency of the synthesized Mg-AC system was analyzed to remove the hazardous pollutants such as Cr(VI), fluorescein (FR) dye and p-Nitrophenol (NP) by a reduction reaction. The apparent rate constant (kapp) value was determined to assess the catalytic activity of the prepared catalyst towards the reduction of hazardous pollutants in the industrial effluents.


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