Abstract
The present work describes novel materials based on niobia oxides destined to oxidize an organic compound in aqueous medium via heterogeneous photo- catalysis. The organic compound decomposition study was realized with a typical basic dye, methylene blue. The analysis of the products, with electrospray ionization mass spectrometry (ESI-MS), showed that the dye was succes- sively oxidized in different intermediate compounds. These results strongly suggest that the oxidation of the organic dye involves oxidizing species mainly generated after previous treatment with H2O2.
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