Journal
SEPARATION SCIENCE AND TECHNOLOGY
Volume 54, Issue 10, Pages 1588-1598Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/01496395.2018.1520731
Keywords
Fe3O4 nanoparticles; poly(ethylenimine); metal ions preconcentration; catalysis; Henry reaction
Funding
- Board of Research in Nuclear Science (BRNS), DAE, India under BARC-University of Pune MoU for the Doctoral studies
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The poly(ethylenimine) functionalized magnetite particles were studied for their preconcentration efficiencies toward Cu2+, Pb2+, and Ni2+ ions. The loading capacities were found to be 26 mg g(-1), 46 mg g(-1), and 13 mg g(-1) of Cu2+, Pb2+, and Ni2+ ions, respectively. Cu2+ ions loaded on the magnetically retrievable nanoparticles were used for Henry reaction as a representative example of a heterogeneous catalyst. These particles were characterized for their chemical, physical, thermal and magnetic properties. The Henry reaction involved reaction between m-nitro benzaldehyde and nitromethane to afford the nitroaldol adducts 1-(3-nitrophenyl)-2-nitrosoethanol with 80% yield in ethanol at room temperature.
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