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Single-Crystal Electrochemistry Reveals Why Metal Nanowires Grow.

Publication ,  Conference
Kim, MJ; Alvarez, S; Chen, Z; Fichthorn, KA; Wiley, BJ
Published in: Journal of the American Chemical Society
November 2018

Shape-control is used to tune the properties of metal nanostructures in applications ranging from catalysts to touch screens, but the origins of anisotropic growth of metal nanocrystals in solution are unknown. We show single-crystal electrochemistry can test hypotheses for why nanostructures form and predict conditions for anisotropic growth by quantifying the degree to which different species cause facet-selective metal deposition. Electrochemical measurements show disruption of alkylamine monolayers by chloride ions causes facet-selective Cu deposition. An intermediate range of chloride concentrations maximizes facet-selective Cu deposition on single crystals and produces the highest aspect ratio nanowires in a solution-phase synthesis. DFT calculations similarly show an intermediate monolayer coverage of chloride displaces the alkylamine capping agent from the ends but not the sides of a nanowire, facilitating anisotropic growth.

Duke Scholars

Published In

Journal of the American Chemical Society

DOI

EISSN

1520-5126

ISSN

0002-7863

Publication Date

November 2018

Volume

140

Issue

44

Start / End Page

14740 / 14746

Related Subject Headings

  • General Chemistry
  • 40 Engineering
  • 34 Chemical sciences
  • 03 Chemical Sciences
 

Citation

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ICMJE
MLA
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Kim, M. J., Alvarez, S., Chen, Z., Fichthorn, K. A., & Wiley, B. J. (2018). Single-Crystal Electrochemistry Reveals Why Metal Nanowires Grow. In Journal of the American Chemical Society (Vol. 140, pp. 14740–14746). https://doi.org/10.1021/jacs.8b08053
Kim, Myung Jun, Samuel Alvarez, Zihao Chen, Kristen A. Fichthorn, and Benjamin J. Wiley. “Single-Crystal Electrochemistry Reveals Why Metal Nanowires Grow.” In Journal of the American Chemical Society, 140:14740–46, 2018. https://doi.org/10.1021/jacs.8b08053.
Kim MJ, Alvarez S, Chen Z, Fichthorn KA, Wiley BJ. Single-Crystal Electrochemistry Reveals Why Metal Nanowires Grow. In: Journal of the American Chemical Society. 2018. p. 14740–6.
Kim, Myung Jun, et al. “Single-Crystal Electrochemistry Reveals Why Metal Nanowires Grow.Journal of the American Chemical Society, vol. 140, no. 44, 2018, pp. 14740–46. Epmc, doi:10.1021/jacs.8b08053.
Kim MJ, Alvarez S, Chen Z, Fichthorn KA, Wiley BJ. Single-Crystal Electrochemistry Reveals Why Metal Nanowires Grow. Journal of the American Chemical Society. 2018. p. 14740–14746.
Journal cover image

Published In

Journal of the American Chemical Society

DOI

EISSN

1520-5126

ISSN

0002-7863

Publication Date

November 2018

Volume

140

Issue

44

Start / End Page

14740 / 14746

Related Subject Headings

  • General Chemistry
  • 40 Engineering
  • 34 Chemical sciences
  • 03 Chemical Sciences