Chatterjee , Debabrata and Dasgupta , Shimanti and Dhodapkar , Rita S and Rao, Nageswar N (2006) Simultaneous degradation of non-emissive and emissive dyes on Visible light illuminated TiO2 surface. Journal of Molecular Catalysis A: Chemical, 260. pp. 264-268.

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Simultaneous photocatalytic degradation of non-emissive dye, acid blue1 (AB1) and emissive dyes (eosinY or thionine) in air-equilibrated aqueous suspension of TiO2 semiconductor photocatalyst has been achieved at ambient conditions. Under visible light irradiation AB1 undergoes appreciable degradation in presence of a sensitizing dye (eosinY or thionine). However, concomitant decoloration of eosinY (EY) or thionine (Th)due to self-sensitized degradation was also noticed. Mechanistic proposals for the photocatalytic degradation of AB1 using a 150WXe lamp with a UV-filter (λ > 420 nm) as well as without a UV-filter, are discussed. Formation of reactive •O2−/•HO2 radicals is proposed to be responsible for the degradation of the selected dyes, AB1, EY and Th.

Item Type: Article
Subjects: Chemistry, Chemical Technology
Depositing User: Users 4 not found.
Date Deposited: 15 Nov 2011 06:53
Last Modified: 15 Nov 2011 11:17

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