Published September 24, 2014
| Supplemental Material
Journal Article
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Highly Active Mixed-Metal Nanosheet Water Oxidation Catalysts Made by Pulsed-Laser Ablation in Liquids
Chicago
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Abstract
Surfactant-free mixed-metal hydroxide water oxidation nanocatalysts were synthesized by pulsed-laser ablation in liquids. In a series of [Ni-Fe]-layered double hydroxides with intercalated nitrate and water, [Ni_(1–x)Fe_x(OH)_2](NO_3)_y(OH)_(x−y)·nH_2O, higher activity was observed as the amount of Fe decreased to 22%. Addition of Ti^(4+) and La^(3+) ions further enhanced electrocatalysis, with a lowest overpotential of 260 mV at 10 mA cm^(–2). Electrocatalytic water oxidation activity increased with the relative proportion of a 405.1 eV N 1s (XPS binding energy) species in the nanosheets.
Additional Information
© 2014 American Chemical Society. Received: June 17, 2014. Published: September 8, 2014. Publication Date (Web): September 8, 2014. We thank Richard Gerhart for fabrication of an electrochemical cell, Alasdair McDowall for help with TEM, and George Rossman for help with solid-state Raman and IR spectroscopies. Research was carried out in the Laser Resource Center and the Molecular Materials Research Center of the Beckman Institute of the California Institute of Technology. This work was supported by the NSF CCI Solar Fuels Program (CHE-1305124) and the Arnold and Mabel Beckman Foundation.Attached Files
Supplemental Material - ja506087h_si_001.pdf
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Additional details
- Eprint ID
- 50808
- Resolver ID
- CaltechAUTHORS:20141024-143748867
- NSF
- CHE-1305124
- Arnold and Mabel Beckman Foundation
- Created
-
2014-10-27Created from EPrint's datestamp field
- Updated
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2021-11-10Created from EPrint's last_modified field
- Caltech groups
- CCI Solar Fuels