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Borophosphate Glass as an Active Media for CuO Nanoparticle Growth: An Efficient Catalyst for Selenylation of Oxadiazoles and Application in Redox Reactions

preprint
submitted on 26.08.2020 and posted on 27.08.2020 by Marcos R. Scheide, Marcos M. Peterle, Sumbal Saba, Jos´e S. S. Neto, Guilherme F. Lenz, Rosane Dias Cezar, Jorlandio F. Felix, Giancarlo V. Botteselle, Ricardo Schneider, Jamal Rafique, antonio luiz braga
Herein, we report the preparation of CuO@ borophosphate nanoparticles (CuOnano@glass) and their wide catalytic applications.The glass annealing, under a controlled atmosphere, enables the growth of copper nanoparticles on the glass surface (not within) by an uncommon bottom-up process. Following the thermal annealing of metallic nanoparticles under air atmosphere, supported copper oxide nanoparticles CuONPs on the glass surface can be obtained. The approach enables the glass matrix to be explored as a precursor and a route for the synthesis of supported copper-based nanoparticles in a solvent-free process without immobilization steps or stabilizing agents. In order to demonstrate the wide synthetic utility of this CuONPs glass-based catalyst, one-pot three-component domino reactions were performed under an air atmosphere, affording the desired selenylated oxadiazoles in good to excellent yields. We also extended the application of these new materials as a glass-based catalyst in the phenol hydroxylation and the reduction of 4-nitrophenol.

History

Email Address of Submitting Author

jamal.chm@gmail.com

Institution

Universidade Federal do Mato Grosso do Sul - UFMS

Country

Brazil

ORCID For Submitting Author

0000-0002-2336-040X

Declaration of Conflict of Interest

The author(s) declare no competing interests.

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