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Closed Access item Manganese ferrite nanoparticles synthesized through a nanocasting route as a highly active Fenton catalyst

Authors:Valdés-Solís Iglesias, Teresa
Valle Vigón, Patricia
Álvarez García, Sonia
Marbán Calzón, Gregorio
Fuertes Arias, Antonio Benito
Keywords:Hydrogen peroxide decomposition, Template method, Manganese ferrite spinel, Nanoparticle, Heterogeneous Fenton reaction
Issue Date:10-Apr-2007
Citation:Catalysis Communications 8(12): 2037-2042 (2007)
Abstract:Spinel ferrite MnFe2O4 nanoparticles were synthesized by means of a nanocasting technique using a low-cost mesoporous silica gel as a hard template. The magnetic nanoparticles, of <10 nm diameter and with a surface area of around 100 m2/g, were tested as a heterogeneous Fenton catalyst for the decomposition of hydrogen peroxide under neutral and basic conditions. This catalyst shows a much higher activity than previous heterogeneous catalysts reported in the literature, which is mainly ascribed to its small particle size. Furthermore, the magnetic catalyst can be easily separated from the reaction medium by means of an external magnetic field. The effects of residual silica and the purity of the catalyst (hematite formation) on catalytic activity have been studied and correlated. The results obtained show this catalyst to be a suitable candidate for the removal of pollutants in wastewaters by means of the Fenton heterogeneous reaction.
Description:6 pages, 5 figures. -- Printed version published Dec 2007. -- Correction published in Catalysis Communications 9(15): 2621 (2008), http://hdl.handle.net/10261/11596
Publisher version (URL):http://dx.doi.org/10.1016/j.catcom.2007.03.030
Appears in Collections:(INCAR) Artículos

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