The DOI matches its Crossref record; 1 of the 1 references it cites were found in a registry or an index.
Branched TiO2 Nanorods for Photoelectrochemical Hydrogen Production
Abstract
We report a hierarchically branched TiO(2) nanorod structure that serves as a model architecture for efficient photoelectrochemical devices as it simultaneously offers a large contact area with the electrolyte, excellent light-trapping characteristics, and a highly conductive pathway for charge carrier collection. Under Xenon lamp illumination (UV spectrum matched to AM 1.5G, 88 mW/cm(2) total power density), the branched TiO(2) nanorod array produces a photocurrent density of 0.83 mA/cm(2) at 0.8 V versus reversible hydrogen electrode (RHE). The incident photon-to-current conversion efficiency reaches 67% at 380 nm with an applied bias of 0.6 V versus RHE, nearly two times higher than the bare nanorods without branches. The branches improve efficiency by means of (i) improved charge separation and transport within the branches due to their small diameters, and (ii) a 4-fold increase in surface area which facilitates the hole transfer at the TiO(2)/electrolyte interface.
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Cites
Electrochemical Photolysis of Water at a Semiconductor Electrode
FUJISHIMA, A., & HONDA, K. (1972) · Nature · doi:10.1038/238037a0 · Cited by 34,169
Cited by
Nanomaterials for renewable energy production and storage
Chen, X., Li, C., Grätzel, M., Kostecki, R., & Mao, S. S. (2012) · Chemical Society Reviews · doi:10.1039/c2cs35230c · Cited by 1,015
Hwang, Y. J., Hahn, C., Liu, B., & Yang, P. (2012) · ACS Nano · doi:10.1021/nn300679d · Cited by 417
Qiu, Y., Yan, K., Deng, H., & Yang, S. (2012) · Nano Letters · doi:10.1021/nl2037326 · Cited by 406
Hierarchical Nanostructures: Design for Sustainable Water Splitting
Fang, M., Dong, G., Wei, R., & Ho, J. C. (2017) · Advanced Energy Materials · doi:10.1002/aenm.201700559 · Cited by 357
Cho, I. S., Lee, C. H., Feng, Y., Logar, M., Rao, P. M., Cai, L., Kim, D. R., Sinclair, R., & Zheng, X. (2013) · Nature Communications · doi:10.1038/ncomms2729 · Cited by 295
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Metadata
- Authors
- Cho, I. S., Chen, Z., Forman, A. J., Kim, D. R., Rao, P. M., Jaramillo, T. F., & Zheng, X.
- Venue
- Nano Letters
- Publisher
- American Chemical Society (ACS)
- Published
- 2011-10-20
- Volume
- 11
- Issue
- 11
- Pages
- 4978-4984
- ISSN
- 1530-6984 (ISSN-L)
- 1530-6992
- OpenAlex
- W2087301481
- Cited by
- 902
- References
- 1
- FWCI
- 29.55
- Type
- journal article
- Language
- en
- Open access
- closed
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