Visible-light-driven photocatalytic hydrogen production over dye-sensitized β-BiTaO4

Author(s):  
D.L.S. Maia ◽  
I. Pepe ◽  
A. Ferreira da Silva ◽  
L.A. Silva
2015 ◽  
Vol 3 (43) ◽  
pp. 21713-21721 ◽  
Author(s):  
Motonori Watanabe ◽  
Hidehisa Hagiwara ◽  
Yudai Ogata ◽  
Aleksandar Staykov ◽  
Sean R. Bishop ◽  
...  

Alkoxyphenyl-substituted carbazole-based metal-free organic dyes were synthesized and effectively used for dye-sensitized, visible-light-driven, photocatalytic hydrogen production.


2014 ◽  
Vol 50 (53) ◽  
pp. 7063-7066 ◽  
Author(s):  
Jiao He ◽  
Jiaqiang Wang ◽  
Yongjuan Chen ◽  
Jinping Zhang ◽  
Deliang Duan ◽  
...  

The rhodamine B dye was used to sensitize a Pt@UiO-66(Zr) metal–organic framework for visible-light driven photocatalytic hydrogen production from a triethanolamine aqueous solution.


Catalysts ◽  
2020 ◽  
Vol 10 (5) ◽  
pp. 535
Author(s):  
Xiao-Feng Shen ◽  
Motonori Watanabe ◽  
Atsushi Takagaki ◽  
Jun Tae Song ◽  
Tatsumi Ishihara

Dye-sensitized photocatalytic hydrogen production using a boron-dipyrromethene (BODIPY) organic material having a pyridyl group at the anchor site was investigated. Phenyl, carbazole, and phenothiazine derivatives were introduced into BODIPY dyes, and their photocatalytic activities were examined. Identification was performed by nuclear magnetic resonance (NMR), infrared (IR), mass (MS) spectra, and absorption spectra, and catalyst evaluation was performed by using visible-light irradiation and photocatalytic hydrogen production and photocurrent. These dyes have strong absorption at 600–700 nm, suggesting that they are promising as photosensitizers. When the photocatalytic activity was examined, stable catalytic performance was demonstrated, and the activity of the Pt-TiO2 photocatalyst carrying a dye having a carbazole group was 249 μmol/gcat·h. Photocurrent measurements suggest that dye-sensitized photocatalytic activity is occurring. This result suggests that BODIPY organic materials with pyridyl groups as anchor sites are useful as novel dye-sensitized photocatalysts.


2014 ◽  
Vol 2 (32) ◽  
pp. 12952-12961 ◽  
Author(s):  
Motonori Watanabe ◽  
Hidehisa Hagiwara ◽  
Aoi Iribe ◽  
Yudai Ogata ◽  
Kenta Shiomi ◽  
...  

Metal-free organic dyes containing benzo[b]phenothiazine were synthesized and effectively used for dye-sensitized visible-light-driven photocatalytic hydrogen production.


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