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

Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry
Rocio BenaventeJose M Palomo

Abstract

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) H₂O₂ for FeCO₃NRs@CALB, while for FeCO₃NRs@CALB-Mentha, water containing 1% (v/v) H₂O₂, 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 ful...Continue Reading

References

Dec 14, 2005·Toxicology and Applied Pharmacology·R Christopher HarmonMonica A Valentovic
Apr 27, 2010·Angewandte Chemie·Sankaranarayanapillai ShyleshWerner R Thiel
Nov 6, 2012·Journal of Hazardous Materials·Edgar MoctezumaCarlos Montalvo
Jan 29, 2013·Accounts of Chemical Research·Leng Leng ChngJackie Y Ying
Oct 2, 2015·Beilstein Journal of Nanotechnology·Marcin KrajewskiDariusz Wasik
May 26, 2018·Chemical Communications : Chem Comm·Rocio BenaventeJose M Palomo

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Citations

Jul 31, 2019·Chemical Communications : Chem Comm·Jose M Palomo

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Methods Mentioned

BETA
atomic emission spectrometry
X-ray

Software Mentioned

GATAN

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