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Multicarbazole-Based D−π–A Dyes Sensitized Hydrogen Evolution under Visible Light Irradiation
[Image: see text] Donor−π bridge–acceptor (D−π–A) organic dyes, well studied in dye-sensitized solar cells (DSSCs), are found to possess great potential in light-inducing hydrogen evolution due to their distinguished light-harvesting ability and suitable electron energy level. In this work, multicar...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American Chemical Society
2020
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7003503/ https://www.ncbi.nlm.nih.gov/pubmed/32039340 http://dx.doi.org/10.1021/acsomega.9b04135 |
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author | Lai, Hua Liu, Xing Zeng, Fanyan Peng, Gang Li, Junhua Yi, Zhengji |
author_facet | Lai, Hua Liu, Xing Zeng, Fanyan Peng, Gang Li, Junhua Yi, Zhengji |
author_sort | Lai, Hua |
collection | PubMed |
description | [Image: see text] Donor−π bridge–acceptor (D−π–A) organic dyes, well studied in dye-sensitized solar cells (DSSCs), are found to possess great potential in light-inducing hydrogen evolution due to their distinguished light-harvesting ability and suitable electron energy level. In this work, multicarbazole-based organic dyes (2C, 3C, 4C) were used as photosensitizers of Pt/TiO(2) for photocatalytic hydrogen evolution (PHE) from water under visible light irradiation. 3C-Pt/TiO(2) shows the best photocatalytic activity among the three dye-sensitized photocatalysts, with a hydrogen evolution rate of 24.7 μmol h(–1) and a turnover number of 247 h(–1). The activity of 3C-Pt/TiO(2) declines significantly after 3 h irradiation. The deactivation was caused by the partial degradation of the electron acceptor, cyanoacrylate moiety, during the photocatalytic process, which was evidenced by UV–vis, Fourier transform infrared spectra (FT-IR), NMR, and mass spectra. This work is expected to contribute toward the understanding of stability issues of organic dyes and the development of more efficient and steady dyes for hydrogen evolution from water splitting. |
format | Online Article Text |
id | pubmed-7003503 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | American Chemical Society |
record_format | MEDLINE/PubMed |
spelling | pubmed-70035032020-02-07 Multicarbazole-Based D−π–A Dyes Sensitized Hydrogen Evolution under Visible Light Irradiation Lai, Hua Liu, Xing Zeng, Fanyan Peng, Gang Li, Junhua Yi, Zhengji ACS Omega [Image: see text] Donor−π bridge–acceptor (D−π–A) organic dyes, well studied in dye-sensitized solar cells (DSSCs), are found to possess great potential in light-inducing hydrogen evolution due to their distinguished light-harvesting ability and suitable electron energy level. In this work, multicarbazole-based organic dyes (2C, 3C, 4C) were used as photosensitizers of Pt/TiO(2) for photocatalytic hydrogen evolution (PHE) from water under visible light irradiation. 3C-Pt/TiO(2) shows the best photocatalytic activity among the three dye-sensitized photocatalysts, with a hydrogen evolution rate of 24.7 μmol h(–1) and a turnover number of 247 h(–1). The activity of 3C-Pt/TiO(2) declines significantly after 3 h irradiation. The deactivation was caused by the partial degradation of the electron acceptor, cyanoacrylate moiety, during the photocatalytic process, which was evidenced by UV–vis, Fourier transform infrared spectra (FT-IR), NMR, and mass spectra. This work is expected to contribute toward the understanding of stability issues of organic dyes and the development of more efficient and steady dyes for hydrogen evolution from water splitting. American Chemical Society 2020-01-23 /pmc/articles/PMC7003503/ /pubmed/32039340 http://dx.doi.org/10.1021/acsomega.9b04135 Text en Copyright © 2020 American Chemical Society This is an open access article published under an ACS AuthorChoice License (http://pubs.acs.org/page/policy/authorchoice_termsofuse.html) , which permits copying and redistribution of the article or any adaptations for non-commercial purposes. |
spellingShingle | Lai, Hua Liu, Xing Zeng, Fanyan Peng, Gang Li, Junhua Yi, Zhengji Multicarbazole-Based D−π–A Dyes Sensitized Hydrogen Evolution under Visible Light Irradiation |
title | Multicarbazole-Based D−π–A Dyes
Sensitized Hydrogen Evolution under Visible Light Irradiation |
title_full | Multicarbazole-Based D−π–A Dyes
Sensitized Hydrogen Evolution under Visible Light Irradiation |
title_fullStr | Multicarbazole-Based D−π–A Dyes
Sensitized Hydrogen Evolution under Visible Light Irradiation |
title_full_unstemmed | Multicarbazole-Based D−π–A Dyes
Sensitized Hydrogen Evolution under Visible Light Irradiation |
title_short | Multicarbazole-Based D−π–A Dyes
Sensitized Hydrogen Evolution under Visible Light Irradiation |
title_sort | multicarbazole-based d−π–a dyes
sensitized hydrogen evolution under visible light irradiation |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7003503/ https://www.ncbi.nlm.nih.gov/pubmed/32039340 http://dx.doi.org/10.1021/acsomega.9b04135 |
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