Simultaneous degradation of non-emissive and emissive dyes on Visible light illuminated TiO2 surface
IR@NEERI: National Environment Engineering Research Institute
View Archive Info| Field | Value | |
| Title |
Simultaneous degradation of non-emissive and emissive dyes on Visible light illuminated TiO2 surface
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| Creator |
Chatterjee , Debabrata
Dasgupta , Shimanti Dhodapkar , Rita S Rao, Nageswar N |
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| Subject |
Chemistry, Chemical Technology
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| Description |
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.
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| Publisher |
Elsevier
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| Date |
2006
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| Type |
Article
PeerReviewed |
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| Format |
application/pdf
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| Identifier |
http://neeri.csircentral.net/50/1/Chattejee1.pdf
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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| Relation |
http://neeri.csircentral.net/50/
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