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Kim do H, Andoshe DM, Shim YS, et al. Toward High-Performance Hematite Nanotube Photoanodes: Charge-Transfer Engineering at Heterointerfaces. ACS Appl Mater Interfaces. 2016;8(36):23793-800doi: 10.1021/acsami.6b05366.
Kim, d. o. . H., Andoshe, D. M., Shim, Y. S., Moon, C. W., Sohn, W., Choi, S., Kim, T. L., Lee, M., Park, H., Hong, K., Kwon, K. C., Suh, J. M., Kim, J. S., Lee, J. H., & Jang, H. W. (2016). Toward High-Performance Hematite Nanotube Photoanodes: Charge-Transfer Engineering at Heterointerfaces. ACS applied materials & interfaces, 8(36), 23793-800. https://doi.org/10.1021/acsami.6b05366
Kim, Do Hong, et al. "Toward High-Performance Hematite Nanotube Photoanodes: Charge-Transfer Engineering at Heterointerfaces." ACS applied materials & interfaces vol. 8,36 (2016): 23793-800. doi: https://doi.org/10.1021/acsami.6b05366
Kim do H, Andoshe DM, Shim YS, Moon CW, Sohn W, Choi S, Kim TL, Lee M, Park H, Hong K, Kwon KC, Suh JM, Kim JS, Lee JH, Jang HW. Toward High-Performance Hematite Nanotube Photoanodes: Charge-Transfer Engineering at Heterointerfaces. ACS Appl Mater Interfaces. 2016 Sep 14;8(36):23793-800. doi: 10.1021/acsami.6b05366. Epub 2016 Aug 29. PMID: 27551887.
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ACS Appl Mater Interfaces. 2016 Sep 14;8(36):23793-800. doi: 10.1021/acsami.6b05366. Epub 2016 Aug 29.

Toward High-Performance Hematite Nanotube Photoanodes: Charge-Transfer Engineering at Heterointerfaces.

ACS applied materials & interfaces

Do Hong Kim, Dinsefa M Andoshe, Young-Seok Shim, Cheon-Woo Moon, Woonbae Sohn, Seokhoon Choi, Taemin Ludvic Kim, Migyoung Lee, Hoonkee Park, Kootak Hong, Ki Chang Kwon, Jun Min Suh, Jin-Sang Kim, Jong-Heun Lee, Ho Won Jang

Affiliations

  1. Department of Materials Science Engineering, Research Institute of Advanced Materials, Seoul National University , Seoul 151-742, Korea.
  2. Department of Materials Science Engineering, Korea University , Seoul 136-713, Korea.
  3. Electronic Materials Research Center, Korea Institute of Science and Technology , Seoul 136-791, Korea.

PMID: 27551887 DOI: 10.1021/acsami.6b05366

Abstract

Vertically ordered hematite nanotubes are considered to be promising photoactive materials for high-performance water-splitting photoanodes. However, the synthesis of hematite nanotubes directly on conducting substrates such as fluorine-doped tin oxide (FTO)/glass is difficult to be achieved because of the poor adhesion between hematite nanotubes and FTO/glass. Here, we report the synthesis of hematite nanotubes directly on FTO/glass substrate and high-performance photoelectrochemical properties of the nanotubes with NiFe cocatalysts. The hematite nanotubes are synthesized by a simple electrochemical anodization method. The adhesion of the hematite nanotubes to the FTO/glass substrate is drastically improved by dipping them in nonpolar cyclohexane prior to postannealing. Bare hematite nanotubes show a photocurrent density of 1.3 mA/cm(2) at 1.23 V vs a reversible hydrogen electrode, while hematite nanotubes with electrodeposited NiFe cocatalysts exhibit 2.1 mA/cm(2) at 1.23 V which is the highest photocurrent density reported for hematite nanotubes-based photoanodes for solar water splitting. Our work provides an efficient platform to obtain high-performance water-splitting photoanodes utilizing earth-abundant hematite and noble-metal-free cocatalysts.

Keywords: NiFe cocatalysts; earth abundant; hematite; nanotube; water-splitting photoanode

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