Abstract

COLLAZZO, G. C. et al. Evaluation of niobium oxide doped with metals in photocatalytic degradation of leather dye. Lat. Am. appl. res. [online]. 2012, vol.42, n.1, pp.51-54. ISSN 0327-0793.

The aim of the present work was to verify the influence of the type of metal used in the presence of niobium pentoxide on the photocatalytic degradation of an industrial leather dye. Niobium oxide alone showed low photocatalytic activity, but with the impregnation of small quantities of metal, this material showed highly activity. It was observed that the type of metal significantly influenced the catalytic activity of niobium oxide. The results indicate that metal/Nb₂O₅ could be employed for the removal of dyes from wastewater. The order of photocatalytic activity of metal-doped Nb₂O₅ was as follows: (La, Zn, Ti) > (Sr, Sn, Ag) > (Co, V, Ga) > (Ni, Y, Cu). The metals Ce, Mn and Mo showed not efficient catalytic activity in degrading the leather dye

Keywords : Niobium Oxide; Photocatalytic Activity; Metals; Doping.

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