Efficient and recyclable palladium enriched magnetic nanocatalyst for reduction of toxic environmental pollutants


Siddappa A. Patil , Manjunatha Kempasiddaiah , Vishal Kandathil , Ramesh B. Dateer , Mahiuddin Baidya , Shivaputra A. Patil

DOI:10.1016/j.jes.2020.08.015

Received May 12, 2020,Revised , Accepted August 16, 2020, Available online September 01, 2020

Volume 101,2021,Pages 189-204

In this paper, highly stable, powerful, and recyclable magnetic nanoparticles tethered N-heterocyclic carbene-palladium(II) ((CH3)3[email protected]3O4) as magnetic nanocatalyst was successfully synthesized from a simplistic multistep synthesis under aerobic conditions through easily available low-cost chemicals. Newly synthesized (CH3)3[email protected]3O4 magnetic nanocatalyst was characterized from various analytical tools and catalytic potential of the (CH3)3[email protected]3O4 magnetic nanocatalyst was studied for the catalytic reduction of toxic 4-nitrophenol (4-NP), hexavalent chromium (Cr(VI)), Methylene Blue (MB) and Methyl Orange (MO) at room temperature in aqueous media. UV-Visible spectroscopy was employed to monitor the reduction reactions. New (CH3)3[email protected]3O4 magnetic nanocatalyst exhibited excellent catalytic activity for the reduction of toxic environmental pollutants. Moreover, (CH3)3[email protected]3O4 magnetic nanocatalyst could be easily and rapidly separated from the reaction mixture with the help of an external magnet and recycled minimum five times in reduction of 4-NP, MB, MO and four times in Cr(VI) without significant loss of catalytic potential and remains stable even after reuse.

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