scholarly journals Visible Light-Driven Dye-Sensitized Photocatalytic Hydrogen Production by Porphyrin and its Cyclic Dimer and Trimer: Effect of Multi-Pyridyl-Anchoring Groups on Photocatalytic Activity and Stability

2018 ◽  
Vol 1 (11) ◽  
pp. 6072-6081 ◽  
Author(s):  
Motonori Watanabe ◽  
Songmei Sun ◽  
Tatsumi Ishihara ◽  
Takuya Kamimura ◽  
Masato Nishimura ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Hydrogen Production ◽  
Visible Light ◽  
Cyclic Dimer ◽  
Photocatalytic Hydrogen Production ◽  
Dye Sensitized ◽  
Visible Light Driven ◽  
Anchoring Groups

scholarly journals Pyridyl-Anchored Type BODIPY Sensitizer-TiO2 Photocatalyst for Enhanced Visible Light-Driven Photocatalytic Hydrogen Production

Catalysts ◽  
2020 ◽  
Vol 10 (5) ◽  
pp. 535
Author(s):  
Xiao-Feng Shen ◽  
Motonori Watanabe ◽  
Atsushi Takagaki ◽  
Jun Tae Song ◽  
Tatsumi Ishihara
Keyword(s):  
Photocatalytic Activity ◽  
Hydrogen Production ◽  
Visible Light ◽  
Catalytic Performance ◽  
Tio2 Photocatalyst ◽  
Pyridyl Group ◽  
Photocatalytic Hydrogen Production ◽  
Dye Sensitized ◽  
Visible Light Driven ◽  
Carbazole Group

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.

Impact of alkoxy chain length on carbazole-based, visible light-driven, dye sensitized photocatalytic hydrogen production

2015 ◽  
Vol 3 (43) ◽  
pp. 21713-21721 ◽  
Author(s):  
Motonori Watanabe ◽  
Hidehisa Hagiwara ◽  
Yudai Ogata ◽  
Aleksandar Staykov ◽  
Sean R. Bishop ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Visible Light ◽  
Chain Length ◽  
Organic Dyes ◽  
Photocatalytic Hydrogen Production ◽  
Metal Free ◽  
Dye Sensitized ◽  
Visible Light Driven

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

A dye-sensitized Pt@UiO-66(Zr) metal–organic framework for visible-light photocatalytic hydrogen production

2014 ◽  
Vol 50 (53) ◽  
pp. 7063-7066 ◽  
Author(s):  
Jiao He ◽  
Jiaqiang Wang ◽  
Yongjuan Chen ◽  
Jinping Zhang ◽  
Deliang Duan ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Visible Light ◽  
Metal Organic Framework ◽  
Photocatalytic Hydrogen Production ◽  
Dye Sensitized ◽  
Visible Light Driven ◽  
Metal Organic ◽  
Rhodamine B Dye ◽  
Visible Light Photocatalytic ◽  
Organic Framework

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.

Spacer effects in metal-free organic dyes for visible-light-driven dye-sensitized photocatalytic hydrogen production

2014 ◽  
Vol 2 (32) ◽  
pp. 12952-12961 ◽  
Author(s):  
Motonori Watanabe ◽  
Hidehisa Hagiwara ◽  
Aoi Iribe ◽  
Yudai Ogata ◽  
Kenta Shiomi ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Visible Light ◽  
Organic Dyes ◽  
Photocatalytic Hydrogen Production ◽  
Metal Free ◽  
Dye Sensitized ◽  
Visible Light Driven

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

Controlling the visible-light driven photocatalytic activity of alloyed ZnSe–AgInSe2 quantum dots for hydrogen production

2020 ◽  
Vol 8 (26) ◽  
pp. 13142-13149 ◽  
Author(s):  
Ping-Yen Hsieh ◽  
Tatsuya Kameyama ◽  
Takayuki Takiyama ◽  
Ko Masuoka ◽  
Takahisa Yamamoto ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Photocatalytic Activity ◽  
Quantum Yield ◽  
Hydrogen Production ◽  
Visible Light ◽  
Apparent Quantum Yield ◽  
Visible Light Driven

Alloyed ZnSe–AgInSe2 quantum dots were used as a photocatalyst for H2 production, showing an apparent quantum yield of 3.4% at 600 nm.

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