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Highly Active Mixed-Metal Nanosheet Water Oxidation Catalysts Made by Pulsed-Laser Ablation in Liquids

Hunter, Bryan M. and Blakemore, James D. and Deimund, Mark and Gray, Harry B. and Winkler, Jay R. and Müller, Astrid M. (2014) Highly Active Mixed-Metal Nanosheet Water Oxidation Catalysts Made by Pulsed-Laser Ablation in Liquids. Journal of the American Chemical Society, 136 (8). pp. 13118-13121. ISSN 0002-7863. http://resolver.caltech.edu/CaltechAUTHORS:20141024-143748867

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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.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1021/ja506087hDOIArticle
http://pubs.acs.org/doi/abs/10.1021/ja506087hPublisherArticle
http://pubs.acs.org/doi/suppl/10.1021/ja506087hPublisherSupporting Information
ORCID:
AuthorORCID
Blakemore, James D.0000-0003-4172-7460
Winkler, Jay R.0000-0002-4453-9716
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.
Group:CCI Solar Fuels
Funders:
Funding AgencyGrant Number
NSFCHE-1305124
Arnold and Mabel Beckman FoundationUNSPECIFIED
Record Number:CaltechAUTHORS:20141024-143748867
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20141024-143748867
Official Citation:Highly Active Mixed-Metal Nanosheet Water Oxidation Catalysts Made by Pulsed-Laser Ablation in Liquids Bryan M. Hunter, James D. Blakemore, Mark Deimund, Harry B. Gray, Jay R. Winkler, and Astrid M. Müller Journal of the American Chemical Society 2014 136 (38), 13118-13121
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:50808
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:27 Oct 2014 15:46
Last Modified:05 Sep 2017 22:23

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