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Recoverable Microparticle-Supported Metal Nanocatalysts

preprint
submitted on 26.11.2019 and posted on 02.12.2019 by Arthur Bonfá Fernandes, Mariia V. Pavliuk, Cristina Paun, Alexandrina C. Carvalho, Cassiana S. Nomura, Erik Lewin, Rebecka Lindblad, Pedro H. C. Camargo, Jacinto Sa, Erick Leite Bastos
Metal nanoparticles have been widely exploited in catalysis, but their full impact on the environment and human health is still under debate. Here we describe the one-step fabrication of polymer microbead-supported metal and metal oxide nanoparticles and their application as recoverable nanocatalysts for reactions under batch and flow conditions. Au, Ag and Fe3O4 nanoparticles were prepared directly at the surface of benzylamine-coated spherical polymer beads in water by using low energy microwave radiation. The morphology and size of the nanoparticles, and therefore their catalytic properties, were tuned by modifying the bead surface using betalamic acid, an antioxidant from plant origin. The catalytic performance and recovery of these environmentally friendly nanocatalysts was demonstrated towards model redox chemical transformations. We anticipate the results reported herein can provide important insights into the controlled and facile synthesis of microparticle supported nanocatalysts under mild conditions.

Funding

ÅForsk (15-455)

Swedish Foundation for International Cooperation in Research and Higher Education (IB2015-6474)

Fundação de Amparo à Pesquisa do Estado de São Paulo (2014/22136-4)

Fundação de Amparo à Pesquisa do Estado de São Paulo (2019/08450-1)

Fundação de Amparo à Pesquisa do Estado de São Paulo (2019/06391-8)

Fundação de Amparo à Pesquisa do Estado de São Paulo (2015/25629-4)

Fundação de Amparo à Pesquisa do Estado de São Paulo (2017/10346-2)

Conselho Nacional de Desenvolvimento Científico e Tecnológico (303341/2016-5)

Conselho Nacional de Desenvolvimento Científico e Tecnológico (303062/2018-5)

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (Finance Code 001)

Vetenskapsrådet (2015-03764)

History

Email Address of Submitting Author

elbastos@iq.usp.br

Institution

Universidade de São Paulo

Country

Brazil

ORCID For Submitting Author

0000-0002-0592-9455

Declaration of Conflict of Interest

There are no conflicts to declare.

Version Notes

V1: Initial Version A revised version of this preprint was published in ACS Applied Nano Materials, https://pubs.acs.org/doi/10.1021/acsanm.9b02433

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