Photocatalytic reduction of dioxygen by colloidal semiconductors and macrocyclic cobalt(III) complexes in Nafion and cellulose matrices
✍ Scribed by J. Premkumar; R. Ramaraj
- Publisher
- Elsevier Science
- Year
- 1998
- Tongue
- English
- Weight
- 589 KB
- Volume
- 132
- Category
- Article
- ISSN
- 1381-1169
No coin nor oath required. For personal study only.
✦ Synopsis
2q Ž . The colloidal semiconductors TiO and CdS are used for the photosensitized reduction of MV and Co III complexes. 2 Photoinduced electron transfer reactions are carried out using the semiconductors in colloidal state, adsorbed and intercalated q Ž . qP Ž . into Nafion and cellulose matrices. The back electron transfer reaction between h TiO or CdS and MV or Co II vb 2 Ž . Ž . complex is prevented by the reaction of the hole with an electron donor triethanolamine TEA . Hydrogen peroxide H O 2 2 qP Ž . Ž . is produced by the reaction of the photoproduced MV or Co II complex with dissolved molecular oxygen O . The 2 qP Ž . photosensitized reaction mechanisms of the formation of MV and Co II complex and the photocatalytic reduction of O 2 to yield H O in the semiconductor modified systems are explained.