The paper describes the synthesis and characterization of novel TiO2–metal hexacyanometallates (MHCMs) composite materials. The starting material, TiO2, was modified by addition of cobalt-hexacyanoferrate (CoHCF) or iron-hexacyanocobaltate (FeHCC) at various concentrations. The resulting composites were characterized as follows: cyclic voltammetry (CV) followed the formation of TiO2–MHCM clusters, TEM micrographs studied their morphology, XAS and XPS data indicated that MHCM bonds to TiO2through the nitrogen atom of its –CN group and modifies the environment of Ti compared to that of pure anatase. As expected, and confirmed by UV-Vis and XP-valence band data, the electronic properties of TiO2were substantially modified: the edge in the composite materials shifted by about2.0 eV relative to TiO2

Physicochemical characterization of metal hexacyanometallate–TiO2composite materials

BERRETTONI, MARIO;CIABOCCO, MICHELA;GIORGETTI, MARCO;
2015

Abstract

The paper describes the synthesis and characterization of novel TiO2–metal hexacyanometallates (MHCMs) composite materials. The starting material, TiO2, was modified by addition of cobalt-hexacyanoferrate (CoHCF) or iron-hexacyanocobaltate (FeHCC) at various concentrations. The resulting composites were characterized as follows: cyclic voltammetry (CV) followed the formation of TiO2–MHCM clusters, TEM micrographs studied their morphology, XAS and XPS data indicated that MHCM bonds to TiO2through the nitrogen atom of its –CN group and modifies the environment of Ti compared to that of pure anatase. As expected, and confirmed by UV-Vis and XP-valence band data, the electronic properties of TiO2were substantially modified: the edge in the composite materials shifted by about2.0 eV relative to TiO2
Mario Berrettoni;Michela Ciabocco;Marzia Fantauzzi;Marco Giorgetti;Antonella Rossi;Eugenio Caponetti
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/468413
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