Magnetically separable nanocomposites with photocatalytic activity under visible light for the selective transformation of biomass-derived platform molecules

Novel magnetically separable TiO2-guanidine-(Ni,Co)Fe2O4 nanomaterials were prepared and characterised by a series of techniques including XRD, SEM, TEM, N2 physisorption as well as XPS and subsequently tested for their photocatalytic activities in the selective transformation of malic acid in aqueo...

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Bibliographic Details
Published in:Green chemistry : an international journal and green chemistry resource : GC 2011-01, Vol.13 (10), p.2750-2758
Main Authors: BALU, Alina M, BARUWATI, Babita, SERRANO, Elena, COT, Jaume, GARCIA-MARTINEZ, Javier, VARMA, Rajender S, LUQUE, Rafael
Format: Article
Language:English
Subjects:
Applied sciences
Biomass
Chemistry
Composites
Energy
Exact sciences and technology
Forms of application and semi-finished materials
General and physical chemistry
Natural energy
Photochemistry
Physical chemistry of induced reactions (with radiations, particles and ultrasonics)
Polymer industry, paints, wood
Technology of polymers
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Summary:Novel magnetically separable TiO2-guanidine-(Ni,Co)Fe2O4 nanomaterials were prepared and characterised by a series of techniques including XRD, SEM, TEM, N2 physisorption as well as XPS and subsequently tested for their photocatalytic activities in the selective transformation of malic acid in aqueous solution. The modification with guanidine, which remarkably decreases the band gap of the metal oxide, was found to have a significant effect in the photocatalytic activity of the materials under visible light, showing a remarkably superior activity to that of the commercial Degussa P25. These materials are also envisaged to have interesting photocatalytic activities under sunlight.
ISSN:1463-9262
1463-9270
DOI:10.1039/c1gc15692f