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Effect of energy bandgap and sacrificial agents of cyclopentadithiophene-based polymers for enhanced photocatalytic hydrogen evolution

Lin, Wei Cheng ; Jayakumar, Jayachandran ; Chang, Chih Li ; Ting, Li Yu ; Elsayed, Mohamed Hammad ; Abdellah, Mohamed LU ; Zheng, Kaibo LU ; Elewa, Ahmed M. ; Lin, Yu Tung and Liu, Jia Jen , et al. (2021) In Applied Catalysis B: Environmental 298.
Abstract

A library of donor-acceptor system consisting of cyclopentadithiophene-based polymer photocatalysts have been designed and synthesized. Among all photocatalysts, the active PCPDTBSO achieved hydrogen evolution rates of 24.6 mmol h–1 g–1 with apparent quantum yields of 8.7 % at 500 nm. More importantly, combined the results of photocatalytic efficiency, apparent quantum yield, the time-resolved fluorescence decay spectra, the steady-state photoluminescence spectra, and the transient absorption spectroscopy, and the oxidation potentials of sacrificial donors and protons reduction potentials in different pH values, we confirmed the concept that ascorbic acid is a suitable sacrificial donor for narrow bandgap polymers... (More)

A library of donor-acceptor system consisting of cyclopentadithiophene-based polymer photocatalysts have been designed and synthesized. Among all photocatalysts, the active PCPDTBSO achieved hydrogen evolution rates of 24.6 mmol h–1 g–1 with apparent quantum yields of 8.7 % at 500 nm. More importantly, combined the results of photocatalytic efficiency, apparent quantum yield, the time-resolved fluorescence decay spectra, the steady-state photoluminescence spectra, and the transient absorption spectroscopy, and the oxidation potentials of sacrificial donors and protons reduction potentials in different pH values, we confirmed the concept that ascorbic acid is a suitable sacrificial donor for narrow bandgap polymers and triethylamine is a suitable sacrificial donor for wide bandgap polymers owing to the existence of the optimal thermodynamic driving force. We believed this study would be advantageous for the selection of photocatalysts and sacrificial donors for hydrogen production.

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Contribution to journal
publication status
published
subject
keywords
Cyclopentadithiophene, Hydrogen evolution, Narrow bandgap polymer photocatalysts, Sacrificial agents, Visible-light
in
Applied Catalysis B: Environmental
volume
298
article number
120577
publisher
Elsevier
external identifiers
  • scopus:85111872807
ISSN
0926-3373
DOI
10.1016/j.apcatb.2021.120577
language
English
LU publication?
yes
id
bd80cb86-c08f-439e-9423-1de9d60393c3
date added to LUP
2021-12-17 13:02:25
date last changed
2025-04-04 15:30:29
@article{bd80cb86-c08f-439e-9423-1de9d60393c3,
  abstract     = {{<p>A library of donor-acceptor system consisting of cyclopentadithiophene-based polymer photocatalysts have been designed and synthesized. Among all photocatalysts, the active PCPDTBSO achieved hydrogen evolution rates of 24.6 mmol h<sup>–1</sup> g<sup>–1</sup> with apparent quantum yields of 8.7 % at 500 nm. More importantly, combined the results of photocatalytic efficiency, apparent quantum yield, the time-resolved fluorescence decay spectra, the steady-state photoluminescence spectra, and the transient absorption spectroscopy, and the oxidation potentials of sacrificial donors and protons reduction potentials in different pH values, we confirmed the concept that ascorbic acid is a suitable sacrificial donor for narrow bandgap polymers and triethylamine is a suitable sacrificial donor for wide bandgap polymers owing to the existence of the optimal thermodynamic driving force. We believed this study would be advantageous for the selection of photocatalysts and sacrificial donors for hydrogen production.</p>}},
  author       = {{Lin, Wei Cheng and Jayakumar, Jayachandran and Chang, Chih Li and Ting, Li Yu and Elsayed, Mohamed Hammad and Abdellah, Mohamed and Zheng, Kaibo and Elewa, Ahmed M. and Lin, Yu Tung and Liu, Jia Jen and Wang, Wen Shin and Lu, Chia Yeh and Chou, Ho Hsiu}},
  issn         = {{0926-3373}},
  keywords     = {{Cyclopentadithiophene; Hydrogen evolution; Narrow bandgap polymer photocatalysts; Sacrificial agents; Visible-light}},
  language     = {{eng}},
  publisher    = {{Elsevier}},
  series       = {{Applied Catalysis B: Environmental}},
  title        = {{Effect of energy bandgap and sacrificial agents of cyclopentadithiophene-based polymers for enhanced photocatalytic hydrogen evolution}},
  url          = {{http://dx.doi.org/10.1016/j.apcatb.2021.120577}},
  doi          = {{10.1016/j.apcatb.2021.120577}},
  volume       = {{298}},
  year         = {{2021}},
}