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A new material for indigo carmine dye photobleaching is proposed in this article. The material consists of bovine bone powder impregnated with Fe (III), its performance as a photocatalyst in an aqueous medium was evaluated. The material was characterized by X-ray diffraction powder analysis (XRD), 57Fe Mössbauer spectroscopy, surface area measurement (BET) and atomic absorption spectrometry. The degradation process was monitored by ultraviolet spectroscopy in the visible region (UV-Vis) and by-products characterized by ESI(-)MS (mass spectrometry electrospray ionisation source in negative mode). The photocatalyst was able to cause the complete bleaching of indigo solutions in sunlight or ultraviolet light. A mechanism for degradation was proposed.

ESTUDO DA ATIVIDADE CATALÍTICA DO PÓ DE OSSO BOVINO IMPREGNADO COM Fe(III): NOVO MATERIAL PARA FOTODEGRADAÇÃO DO CORANTE ÍNDIGO CARMIM