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

Shen, Xiao-Feng; Watanabe, Motonori; Takagaki, Atsushi; Song, Jun Tae; Ishihara, Tatsumi

doi:10.3390/catal10050535

Open AccessFeature PaperArticle

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

by

Xiao-Feng Shen

¹,

Motonori Watanabe

^1,2,3,*,

Atsushi Takagaki

^2,3

,

Jun Tae Song

^2,3 and

Tatsumi Ishihara

^1,2,3

¹

Department of Automotive Science, Graduate School of Integrated Frontier Sciences, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan

²

International Institute for Carbon-Neutral Energy Research (WPI-I2CNER), Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan

³

Department of Applied Chemistry, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan

^*

Author to whom correspondence should be addressed.

Catalysts 2020, 10(5), 535; https://doi.org/10.3390/catal10050535

Submission received: 8 April 2020 / Revised: 5 May 2020 / Accepted: 8 May 2020 / Published: 12 May 2020

(This article belongs to the Section Photocatalysis)

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Abstract

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/g_cat·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.

Keywords: hydrogen; dye-sensitized; photocatalyst; photocurrent

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MDPI and ACS Style

Shen, X.-F.; Watanabe, M.; Takagaki, A.; Song, J.T.; Ishihara, T. Pyridyl-Anchored Type BODIPY Sensitizer-TiO₂ Photocatalyst for Enhanced Visible Light-Driven Photocatalytic Hydrogen Production. Catalysts 2020, 10, 535. https://doi.org/10.3390/catal10050535

AMA Style

Shen X-F, Watanabe M, Takagaki A, Song JT, Ishihara T. Pyridyl-Anchored Type BODIPY Sensitizer-TiO₂ Photocatalyst for Enhanced Visible Light-Driven Photocatalytic Hydrogen Production. Catalysts. 2020; 10(5):535. https://doi.org/10.3390/catal10050535

Chicago/Turabian Style

Shen, Xiao-Feng, Motonori Watanabe, Atsushi Takagaki, Jun Tae Song, and Tatsumi Ishihara. 2020. "Pyridyl-Anchored Type BODIPY Sensitizer-TiO₂ Photocatalyst for Enhanced Visible Light-Driven Photocatalytic Hydrogen Production" Catalysts 10, no. 5: 535. https://doi.org/10.3390/catal10050535

APA Style

Shen, X.-F., Watanabe, M., Takagaki, A., Song, J. T., & Ishihara, T. (2020). Pyridyl-Anchored Type BODIPY Sensitizer-TiO₂ Photocatalyst for Enhanced Visible Light-Driven Photocatalytic Hydrogen Production. Catalysts, 10(5), 535. https://doi.org/10.3390/catal10050535

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

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