Please use this identifier to cite or link to this item:
https://hdl.handle.net/2440/136463
Citations | ||
Scopus | Web of Science® | Altmetric |
---|---|---|
?
|
?
|
Type: | Journal article |
Title: | Red-Light-Mediated Photocatalytic Hydrogen Evolution by Hole Transfer from Non-Fullerene Acceptor Y6 |
Author: | De La Perrelle, J.M. Dolan, A. Milsom, E.R. Small, T.D. Metha, G.F. Pan, X. Andersson, M.R. Huang, D.M. Kee, T.W. |
Citation: | The Journal of Physical Chemistry C: Energy Conversion and Storage, Optical and Electronic Devices, Interfaces, Nanomaterials, and Hard Matter, 2022; 126(34):14518-14528 |
Publisher: | American Chemical Society (ACS) |
Issue Date: | 2022 |
ISSN: | 1932-7447 1932-7455 |
Statement of Responsibility: | Jessica M. de la Perrelle, Andrew Dolan, Emily R. Milsom, Thomas D. Small, Gregory F. Metha, Xun Pan, Mats R. Andersson, David M. Huang, and Tak W. Kee |
Abstract: | We report the use of blend nanoparticles (NPs) of the organic semiconductors PM6 and Y6 for the photocatalytic production of hydrogen under sacrificial conditions, with a 2% mass loading of Pt cocatalyst. When prepared using TEBS, a thiophene-containing surfactant, these blend NPs have a desirable intermixed morphology. Under ≈1-sun illumination from 400 to 900 nm, hydrogen is produced at a rate of 8000 ± 400 μmol h−1 g−1 . Remarkably, this rate remains high at 5200 ± 300 μmol h−1 g−1 under 650 to 900 nm excitation, where Y6 is exclusively excited, generating free charges by hole transfer from Y6 to PM6. The rate drops to 2400 ± 200 μmol h−1 g−1 under 400 to 600 nm excitation, where PM6 is preferentially excited and free charges are generated through electron transfer. We also show that the external quantum efficiency is wavelength-independent. This work is the first study to show that free charge generation through hole transfer contributes significantly to hydrogen evolution in a donor:acceptor blend. |
Keywords: | Absorption; Fluorescence; Hole transfer; Quantum mechanics; Sodium dodecyl sulfate |
Rights: | © 2022 American Chemical Society |
DOI: | 10.1021/acs.jpcc.2c05268 |
Grant ID: | http://purl.org/au-research/grants/arc/DP160103797 http://purl.org/au-research/grants/arc/DP220102900 http://purl.org/au-research/grants/arc/LE0989747 |
Published version: | http://dx.doi.org/10.1021/acs.jpcc.2c05268 |
Appears in Collections: | Chemistry and Physics publications |
Files in This Item:
There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.