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Fabrication of Copper(II)-Coated Magnetic Core-Shell Nanoparticles $Fe_{3}O_{4}@SiO_{2}$: An Effective and Recoverable Catalyst for Reduction/Degradation of Environmental Pollutants
| Content Provider | MDPI |
|---|---|
| Author | Dadashi, Jaber Khaleghian, Mohammad Mirtamizdoust, Babak Hanifehpour, Younes Joo, Sang Woo |
| Copyright Year | 2022 |
| Description | In this work, we report the synthesis of a magnetically recoverable catalyst through immobilizing copper (II) over the $Fe_{3}O_{4}@SiO_{2}$ nanoparticles (NPs) surface $[Fe_{3}O_{4}@SiO_{2}$-L–Cu(II)] (L = pyridine-4-carbaldehyde thiosemicarbazide). Accordingly, synthesized catalysts were determined and characterized by energy dispersive X-ray spectrometry (EDS), X-ray diffraction (XRD), Fourier transforms infrared spectroscopy (FT-IR), vibrating sample magnetometer (VSM), field emission scanning electron microscopy (FESEM), and thermogravimetric-differential thermal analysis (TG-DTA) procedures. The $[Fe_{3}O_{4}@SiO_{2}$-L–Cu(II)] was used for the reduction of Cr(VI), 4-nitrophenol (4-NP) and organic dyes such as Congo Red (CR) and methylene blue (MB) in aqueous media. Catalytic performance studies showed that the $[Fe_{3}O_{4}@SiO_{2}$–L–Cu(II)] has excellent activity toward reduction reactions under mild conditions. Remarkable attributes of this method are high efficiency, removal of a homogeneous catalyst, easy recovery from the reaction mixture, and uncomplicated route. The amount of activity in this catalytic system was almost constant after several stages of recovery and reuse. The results show that the catalyst was easily separated and retained 83% of its efficiency after five cycles without considerable loss of activity and stability. |
| Starting Page | 862 |
| e-ISSN | 20734352 |
| DOI | 10.3390/cryst12060862 |
| Journal | Crystals |
| Issue Number | 6 |
| Volume Number | 12 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2022-06-18 |
| Access Restriction | Open |
| Subject Keyword | Crystals Water Science and Technology Copper Nanocomplex Core/shell Structure Fe3o4 Nanoparticles Environmental Pollutant Dye Degradation |
| Content Type | Text |
| Resource Type | Article |
