METHOD OF PREPARING CORE-SHELL COPPER NANOPARTICLES IMMOBILIZED ON ACTIVATED CARBON AND METHOD OF PREPARING CHALCOGENIDE COMPOUND USING NANOPARTICLES AS CATALYST

摘要

Disclosed herein is a method of preparing a Cu/Cu2O core-shell copper nanoparticle catalyst having high catalytic activity from [Cu3(BTC)2] and NaBH4 via a simple chemical reduction method. Also disclosed is a method of preparing a chalcogenide compound by using the nanoparticle catalyst as a heterogeneous catalyst in a cross-coupling reaction between a chalcogenide precursor compound and a boron-containing compound. The disclosed cross-coupling reaction is performed via a simple process, and the disclosed nanoparticle catalyst is compatible with various substrates under mild reaction conditions and exhibits excellent recyclability without a reduction in catalytic activity.

主权项

1. A method of preparing immobilized copper nanoparticles, the method comprising:
adding Cu(NO3)2.2.5H2O and H3BTC to an organic solvent, followed by stirring to prepare a mixture; separating a solid product from the mixture, and drying the separated product in a vacuum to yield [Cu3(BTC)2]; adding an aqueous solution of NaBH4 dropwise to an aqueous solution of the [Cu3(BTC)2] in water to obtain reduced copper particles; adding the reduced copper particles to a mixture of ethyl alcohol and activated carbon, followed by sonication at room temperature and refluxing to obtain a solution of copper nanoparticles immobilized on the activated carbon; and cooling the solution of the copper nanoparticles immobilized on the activated carbon, and purifying a product resulting from the cooling of the solution.