CuI incorporated cobalt ferrite nanoparticles as a magnetically separable catalyst for oxidative amidation reaction
Mintu Maan Dutta1, Hrishikesh Talukdar1, Prodeep Phukan1
1Department of Chemistry, Gauhati University, Guwahati 781014, Assam, India. pphukan@yahoo.com pphukan@gauhati.ac.in.
Dalton Transactions (Cambridge, England : 2003)
|October 16, 2019
Summary
A novel magnetic nanocatalyst (CoFe2O4@SiO2-SH-CuI) efficiently synthesizes amides and detects mercury ions. This versatile catalyst offers easy magnetic separation and application in fluorescent sensing.
Area of Science:
- Materials Science
- Nanotechnology
- Catalysis
- Chemical Sensing
Background:
- Development of efficient and recyclable nanocatalysts is crucial for sustainable chemical synthesis.
- Magnetic nanoparticles offer advantages in catalyst separation and recovery.
- Functionalized nanomaterials can be tailored for specific catalytic and sensing applications.
Purpose of the Study:
- To synthesize a novel copper-incorporated magnetic nanocatalyst (CoFe2O4@SiO2-SH-CuI).
- To evaluate the nanocatalyst's efficiency in the oxidative amidation of aryl aldehydes.
- To synthesize a new fluorescent molecule and investigate its potential for metal ion sensing.
Main Methods:
- Synthesis of CoFe2O4@SiO2-SH magnetic nanoparticles via silica coating and thiol functionalization.
- Immobilization of Copper Iodide (CuI) onto the functionalized nanoparticles to create the nanocatalyst.
- Application of the nanocatalyst in oxidative amidation reactions using tert-butyl hydroperoxide (TBHP) as oxidant.
- Characterization of the synthesized carboxamide for fluorescence sensing of metal ions.
Main Results:
- The CoFe2O4@SiO2-SH-CuI nanocatalyst was successfully synthesized and demonstrated high efficiency in synthesizing N-(pyridin-2-yl) benzamide derivatives.
- The magnetic nanocatalyst exhibited excellent recyclability due to easy separation using an external magnetic field.
- A new compound, N-(pyridin-2-yl)anthracene-2-carboxamide, was synthesized and showed 'turn-on' fluorescence sensing capabilities for Hg2+ ions in aqueous solutions.
Conclusions:
- The developed Cu-incorporated magnetic nanocatalyst is a versatile and recyclable material for organic synthesis.
- The newly synthesized carboxamide derivative shows promise as a selective fluorescent sensor for mercury ions.
- This study highlights the potential of functionalized magnetic nanoparticles in both catalysis and chemical sensing.
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