| Autor: |
Resasco, J, Zhang, H, Kornienko, N, Becknell, N, Lee, H, Guo, J, Briseno, AL, Yang, P |
| Jazyk: |
angličtina |
| Rok vydání: |
2016 |
| Zdroj: |
Resasco, J; Zhang, H; Kornienko, N; Becknell, N; Lee, H; Guo, J; et al.(2016). TiO2/BiVO4nanowire heterostructure photoanodes based on type II band alignment. ACS Central Science, 2(2), 80-88. doi: 10.1021/acscentsci.5b00402. UC Berkeley: Retrieved from: http://www.escholarship.org/uc/item/1xt6x0sw |
| DOI: |
10.1021/acscentsci.5b00402. |
| Popis: |
© 2016 American Chemical Society. Metal oxides that absorb visible light are attractive for use as photoanodes in photoelectrosynthetic cells. However, their performance is often limited by poor charge carrier transport. We show that this problem can be addressed by using separate materials for light absorption and carrier transport. Here, we report a Ta:TiO2|BiVO4nanowire photoanode, in which BiVO4acts as a visible light-absorber and Ta:TiO2acts as a high surface area electron conductor. Electrochemical and spectroscopic measurements provide experimental evidence for the type II band alignment necessary for favorable electron transfer from BiVO4to TiO2. The host-guest nanowire architecture presented here allows for simultaneously high light absorption and carrier collection efficiency, with an onset of anodic photocurrent near 0.2 V vs RHE, and a photocurrent density of 2.1 mA/cm2at 1.23 V vs RHE. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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