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Tuning Thiophene-Based Phenothiazines for Stable Photocatalytic Hydrogen Production.
- Source :
-
ChemSusChem [ChemSusChem] 2015 Dec 21; Vol. 8 (24), pp. 4216-28. Date of Electronic Publication: 2015 Nov 26. - Publication Year :
- 2015
-
Abstract
- Dibranched donor-(π-acceptor)2 dyes, where phenothiazine is the donor core, cyanoacrylic acid is the acceptor/anchoring group, and π is represented by mono- and poly-cyclic simple and fused thiophene derivatives, were tested as photosensitizers in the photocatalytic production of H2 , in combination with a Pt/TiO2 catalyst. The optical and electrochemical properties of the dyes were investigated, showing that careful design of the thiophene-based π spacer afforded enhanced optical properties. In the H2 production over 20 h, the new thiophene-based sensitizers revealed improved stability after longer irradiation times and enhanced performances, in terms of H2 production rates and light-to-fuel efficiencies, after an initial activation period, which were for the first time associated with enhanced stability under photocatalytic production of H2 and the absence of critical dye degradation.<br /> (© 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.)
Details
- Language :
- English
- ISSN :
- 1864-564X
- Volume :
- 8
- Issue :
- 24
- Database :
- MEDLINE
- Journal :
- ChemSusChem
- Publication Type :
- Academic Journal
- Accession number :
- 26610281
- Full Text :
- https://doi.org/10.1002/cssc.201501040