Abstract
Concerning both the activity and stability of the promising solar-driven Ta3N5-based photoanodes for photoelectrochemical water splitting, the strategy for simultaneously promoting charge separation, enhancing catalytic activity
and also improving the resistance to self-oxidation is highly desirable
and actively pursued. In this study, a novel dual co-catalyst shell
consisting of a continuous CoPi layer at the bottom and many
non-continuous Co(OH)2 islands at the top of the CoPi layer is designed to meet the strict requirements for efficient Ta3N5 photoanodes. As a result of the synergistic effects of such a shell in collectively addressing the concerns, the constructed photoanode of CoPi/Co(OH)2-Ta3N5 nanorod
arrays show the remarkably enhanced photoelectrochemical water
splitting performance compared with the photoanodes with single
co-catalyst. The results demonstrated in this study are expected to shed
some light on constructing efficient photoelectrodes of the light
absorbers that have wide absorption range but low resistance to
self-oxidation.
Original language | English |
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Pages (from-to) | 683-688 |
Number of pages | 6 |
Journal | Nano Energy |
Volume | 59 |
Early online date | 7 Mar 2019 |
DOIs | |
Publication status | Published - May 2019 |
Keywords
- TaN
- Nanorod
- Water splitting
- Solar energy
- Hydrogen