Formation of multilayer-Eosin Y-sensitized TiO sub(2 via Fe) super(3)+ coupling for efficient visible-light photocatalytic hydrogen evolution

An efficient visible-light active photocatalyst of multilayer-Eosin Y-sensitized TiO sub(2 is prepared through linkage of Fe) super(3)+ between not only TiO sub(2 and Eosin Y but also different Eosin Y molecules to form three-dimensional polymeric dye structure. The multilayer-dye-sensitized photoca...

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Bibliographic Details
Published in:International journal of hydrogen energy 2009-07, Vol.34 (14), p.5629-5636
Main Authors: Li, Yuexiang, Guo, Miaomiao, Peng, Shaoqin, Lu, Gongxuan, Li, Shuben
Format: Article
Language:English
Subjects:
Coupling (molecular)
Deposition
Dyes
Hydrogen evolution
Optimization
Photocatalysis
Titanium dioxide
Triethanolamine
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Summary:An efficient visible-light active photocatalyst of multilayer-Eosin Y-sensitized TiO sub(2 is prepared through linkage of Fe) super(3)+ between not only TiO sub(2 and Eosin Y but also different Eosin Y molecules to form three-dimensional polymeric dye structure. The multilayer-dye-sensitized photocatalyst is found to have high light harvesting efficiency and photocatalytic activity for hydrogen evolution under visible light irradiation ( lambda 420 nm). On the optimum conditions (1:1 initial molar ratio of Eosin Y to Fe(NO) sub(3)) sub(3, initial 10 x 10) super(-)3 M Eosin Y, and 1.0 wt% Pt deposited by in situ photoreduction), its maximal apparent quantum yield for hydrogen evolution is 19.1% from aqueous triethanolamine solution (TEOA aq). The present study highlights linking between dye molecules via metal ions as a general way to develop efficient visible-light photocatalyst.
ISSN:0360-3199
DOI:10.1016/j.ijhydene.2009.05.100