Aerobic Conditions Enhance the Photocatalytic Stability of CdS/CdO x Quantum Dots

Photocatalytic H production through water splitting represents an attractive route to generate a renewable fuel. These systems are typically limited to anaerobic conditions due to the inhibiting effects of O . Here, we report that sacrificial H evolution with CdS quantum dots does not necessarily su...

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Bibliographic Details
Published in:Chemistry : a European journal 2018-12, Vol.24 (69), p.18385-18388
Main Authors: Wakerley, David W, Ly, Khoa H, Kornienko, Nikolay, Orchard, Katherine L, Kuehnel, Moritz F, Reisner, Erwin
Format: Article
Language:English
Subjects:
Chemistry
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Summary:Photocatalytic H production through water splitting represents an attractive route to generate a renewable fuel. These systems are typically limited to anaerobic conditions due to the inhibiting effects of O . Here, we report that sacrificial H evolution with CdS quantum dots does not necessarily suffer from O inhibition and can even be stabilised under aerobic conditions. The introduction of O prevents a key inactivation pathway of CdS (over-accumulation of metallic Cd and particle agglomeration) and thereby affords particles with higher stability. These findings represent a possibility to exploit the O reduction reaction to inhibit deactivation, rather than catalysis, offering a strategy to stabilise photocatalysts that suffer from similar degradation reactions.
ISSN:0947-6539
1521-3765
DOI:10.1002/chem.201802353