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Dye-Sensitized Photocatalytic Hydrogen Generation: Efficiency Enhancement by Organic Photosensitizer–Coadsorbent Intermolecular Interaction AITranslate

Norberto Manfredi; Matteo Monai; Tiziano Montini; Francesco Peri; Filippo De Angelis; Paolo Fornasiero; Alessandro Abbotto;
University of Milano-Bicocca and INSTM Milano-Bicocca Research; University of Trieste; University of Trieste; University of Milano-Bicocca; University of Perugia; University of Trieste; University of Milano-Bicocca and INSTM Milano-Bicocca Research
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Publisher: ACS
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Abstract AITranslate

Dye-sensitized photocatalytic H2 generation has been investigated using a metal-free phenothiazine-based donor–acceptor sensitizer (PTZ-GLU) in combination with coadsorbents. The coadsorption of the PTZ-GLU dye, functionalized with a glucose end-group, in combination with a glucose-based coadsorbent, afforded improved photocatalytic activity compared to the absence of coadsorbents, to the use of a conventional (chenodeoxycholic acid) coadsorbent, or by replacing the dye glucose functionality with an alkyl chain. The results suggest the strategic role of directional intermolecular dye–coadsorbent interactions on the semiconductor surface, as confirmed by first principles computational modeling, which likely suppressed detrimental recombination processes.

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DOI：https://doi.org/10.1021/acsenergylett.7b00896

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Dye-sensitized photocatalytic H2 generation has been investigated using a metal-free phenothiazine-based donor–acceptor sensitizer (PTZ-GLU) in combination with coadsorbents. The coadsorption of the PTZ-GLU dye, functionalized with a glucose end-group, in combination with a glucose-based coadsorbent, afforded improved photocatalytic activity compared to the absence of coadsorbents, to the use of a conventional (chenodeoxycholic acid) coadsorbent, or by replacing the dye glucose functionality with an alkyl chain. The results suggest the strategic role of directional intermolecular dye–coadsorbent interactions on the semiconductor surface, as confirmed by first principles computational modeling, which likely suppressed detrimental recombination processes.

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GB/T 7714-2015 [1] Norberto Manfredi, Matteo Monai, Tiziano Montini, et al. ACS Energy Letters, 2018(3). DOI:10.1021/acsenergylett.7b00896.
MLA [1] Norberto Manfredi, et al., ACS Energy Letters, no. 3, 2018, https://doi.org/10.1021/acsenergylett.7b00896.
APA [1] Norberto Manfredi, Matteo Monai, Tiziano Montini, Francesco Peri, Filippo De Angelis, Paolo Fornasiero, & Alessandro Abbotto. (2018). ACS Energy Letters(3). https://doi.org/10.1021/acsenergylett.7b00896
IEEE [1] Norberto Manfredi, Matteo Monai, Tiziano Montini, Francesco Peri, Filippo De Angelis, Paolo Fornasiero, and Alessandro Abbotto, ACS Energy Letters, no. 3, 2018, doi: 10.1021/acsenergylett.7b00896.