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Ultra-Fast Degradation of p-Aminophenol by a Nanostructured Iron Catalyst

Full degradation of p-aminophenol in aqueous solution at room temperature by using a heterogeneous nanostructured iron hybrid catalyst in the presence of hydrogen peroxide is described. A nanostructured iron catalyst was prepared by in situ formation of iron carbonate nanorods on the protein network...

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Autores principales: Benavente, Rocio, Lopez-Tejedor, David, Perez-Rizquez, Carlos, Palomo, Jose M.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6245462/
https://www.ncbi.nlm.nih.gov/pubmed/30154340
http://dx.doi.org/10.3390/molecules23092166
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author Benavente, Rocio
Lopez-Tejedor, David
Perez-Rizquez, Carlos
Palomo, Jose M.
author_facet Benavente, Rocio
Lopez-Tejedor, David
Perez-Rizquez, Carlos
Palomo, Jose M.
author_sort Benavente, Rocio
collection PubMed
description Full degradation of p-aminophenol in aqueous solution at room temperature by using a heterogeneous nanostructured iron hybrid catalyst in the presence of hydrogen peroxide is described. A nanostructured iron catalyst was prepared by in situ formation of iron carbonate nanorods on the protein network using an aqueous solution of an enzyme, lipase B from Candida antarctica (CAL-B). A second kind of iron nanostructured catalyst was obtained by the sunsequent treatment of the hybrid with an aqueous liquid extract of Mentha x piperita. Remarkable differences were observed using TEM imaging. When M. piperita extract was used, nanoparticles appeared instead of nanorods. Catalytic activity of these iron nanocatalysts was studied in the degradation of the environmental pollutant p-aminophenol (pAP) under different operating parameters, such as pH, presence of buffer or hydrogen peroxide concentration. Optimal conditions were pH 4 in acetate buffer 10 mM containing 1% (v/v) H(2)O(2) for FeCO(3)NRs@CALB, while for FeCO(3)NRs@CALB-Mentha, water containing 1% (v/v) H(2)O(2), resulted the best. A complete degradation of 100 ppm of pAP was achieved in 2 and 3 min respectively using 1 g Fe/L. This novel nanocatalyst was recycled five times maintaining full catalytic performance.
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spelling pubmed-62454622018-11-26 Ultra-Fast Degradation of p-Aminophenol by a Nanostructured Iron Catalyst Benavente, Rocio Lopez-Tejedor, David Perez-Rizquez, Carlos Palomo, Jose M. Molecules Article Full degradation of p-aminophenol in aqueous solution at room temperature by using a heterogeneous nanostructured iron hybrid catalyst in the presence of hydrogen peroxide is described. A nanostructured iron catalyst was prepared by in situ formation of iron carbonate nanorods on the protein network using an aqueous solution of an enzyme, lipase B from Candida antarctica (CAL-B). A second kind of iron nanostructured catalyst was obtained by the sunsequent treatment of the hybrid with an aqueous liquid extract of Mentha x piperita. Remarkable differences were observed using TEM imaging. When M. piperita extract was used, nanoparticles appeared instead of nanorods. Catalytic activity of these iron nanocatalysts was studied in the degradation of the environmental pollutant p-aminophenol (pAP) under different operating parameters, such as pH, presence of buffer or hydrogen peroxide concentration. Optimal conditions were pH 4 in acetate buffer 10 mM containing 1% (v/v) H(2)O(2) for FeCO(3)NRs@CALB, while for FeCO(3)NRs@CALB-Mentha, water containing 1% (v/v) H(2)O(2), resulted the best. A complete degradation of 100 ppm of pAP was achieved in 2 and 3 min respectively using 1 g Fe/L. This novel nanocatalyst was recycled five times maintaining full catalytic performance. MDPI 2018-08-28 /pmc/articles/PMC6245462/ /pubmed/30154340 http://dx.doi.org/10.3390/molecules23092166 Text en © 2018 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Benavente, Rocio
Lopez-Tejedor, David
Perez-Rizquez, Carlos
Palomo, Jose M.
Ultra-Fast Degradation of p-Aminophenol by a Nanostructured Iron Catalyst
title Ultra-Fast Degradation of p-Aminophenol by a Nanostructured Iron Catalyst
title_full Ultra-Fast Degradation of p-Aminophenol by a Nanostructured Iron Catalyst
title_fullStr Ultra-Fast Degradation of p-Aminophenol by a Nanostructured Iron Catalyst
title_full_unstemmed Ultra-Fast Degradation of p-Aminophenol by a Nanostructured Iron Catalyst
title_short Ultra-Fast Degradation of p-Aminophenol by a Nanostructured Iron Catalyst
title_sort ultra-fast degradation of p-aminophenol by a nanostructured iron catalyst
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6245462/
https://www.ncbi.nlm.nih.gov/pubmed/30154340
http://dx.doi.org/10.3390/molecules23092166
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