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Thermal Stability of Au Rhombic Dodecahedral Nanocrystals Can Be Greatly Enhanced by Coating Their Surface with an Ultrathin Shell of Pt.

Publication ,  Journal Article
Pawlik, VD; Zhao, X; Figueras-Valls, M; Wolter, TJ; Hood, ZD; Ding, Y; Liu, J; Chi, M; Mavrikakis, M; Xia, Y
Published in: Nano letters
January 2024

Rhombic dodecahedral nanocrystals have been considered particularly difficult to synthesize because they are enclosed by {110}, a low-index facet with the greatest surface energy. Recently, we demonstrated the use of seed-mediated growth for the facile and robust synthesis of Au rhombic dodecahedral nanocrystals (AuRD). While the unique shape and surface structure of AuRD are desirable for potential applications in plasmonics and catalysis, respectively, their high surface energy makes them highly susceptible to thermal degradation. Here we demonstrate that it is feasible to greatly improve the thermal stability with some sacrifice to the plasmonic properties of the original AuRD by coating their surface with an ultrathin shell made of Pt. Our in situ electron microscopy analysis indicates that the ultrathin Pt coating can increase the thermal stability from 60 up to 450 °C, a trend that is also supported by the results from a computational study.

Duke Scholars

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Published In

Nano letters

DOI

EISSN

1530-6992

ISSN

1530-6984

Publication Date

January 2024

Volume

24

Issue

2

Start / End Page

549 / 556

Related Subject Headings

  • Nanoscience & Nanotechnology
 

Citation

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MLA
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Pawlik, V. D., Zhao, X., Figueras-Valls, M., Wolter, T. J., Hood, Z. D., Ding, Y., … Xia, Y. (2024). Thermal Stability of Au Rhombic Dodecahedral Nanocrystals Can Be Greatly Enhanced by Coating Their Surface with an Ultrathin Shell of Pt. Nano Letters, 24(2), 549–556. https://doi.org/10.1021/acs.nanolett.3c02680
Pawlik, Veronica D., Xiaohuan Zhao, Marc Figueras-Valls, Trenton J. Wolter, Zachary D. Hood, Yong Ding, Jingyue Liu, Miaofang Chi, Manos Mavrikakis, and Younan Xia. “Thermal Stability of Au Rhombic Dodecahedral Nanocrystals Can Be Greatly Enhanced by Coating Their Surface with an Ultrathin Shell of Pt.Nano Letters 24, no. 2 (January 2024): 549–56. https://doi.org/10.1021/acs.nanolett.3c02680.
Pawlik VD, Zhao X, Figueras-Valls M, Wolter TJ, Hood ZD, Ding Y, et al. Thermal Stability of Au Rhombic Dodecahedral Nanocrystals Can Be Greatly Enhanced by Coating Their Surface with an Ultrathin Shell of Pt. Nano letters. 2024 Jan;24(2):549–56.
Pawlik, Veronica D., et al. “Thermal Stability of Au Rhombic Dodecahedral Nanocrystals Can Be Greatly Enhanced by Coating Their Surface with an Ultrathin Shell of Pt.Nano Letters, vol. 24, no. 2, Jan. 2024, pp. 549–56. Epmc, doi:10.1021/acs.nanolett.3c02680.
Pawlik VD, Zhao X, Figueras-Valls M, Wolter TJ, Hood ZD, Ding Y, Liu J, Chi M, Mavrikakis M, Xia Y. Thermal Stability of Au Rhombic Dodecahedral Nanocrystals Can Be Greatly Enhanced by Coating Their Surface with an Ultrathin Shell of Pt. Nano letters. 2024 Jan;24(2):549–556.
Journal cover image

Published In

Nano letters

DOI

EISSN

1530-6992

ISSN

1530-6984

Publication Date

January 2024

Volume

24

Issue

2

Start / End Page

549 / 556

Related Subject Headings

  • Nanoscience & Nanotechnology