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Cited by 500

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Monoplatinum Doping of Gold Nanoclusters and Catalytic Application

Qian, Huifeng, Jiang, De-en, Li, Gao, Gayathri, Chakicherla, Das, Anindita, Gil, Roberto R., Jin, Rongchao·2012·Journal of the American Chemical Society
DOI 10.1021/ja307657a
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Abstract

We report single-atom doping of gold nanoclusters (NCs), and its drastic effects on the optical, electronic, and catalytic properties, using the 25-atom system as a model. In our synthetic approach, a mixture of Pt(1)Au(24)(SC(2)H(4)Ph)(18) and Au(25)(SC(2)H(4)Ph)(18) was produced via a size-focusing process, and then Pt(1)Au(24)(SC(2)H(4)Ph)(18) NCs were obtained by selective decomposition of Au(25)(SC(2)H(4)Ph)(18) in the mixture with concentrated H(2)O(2) followed by purification via size-exclusion chromatography. Experimental and theoretical analyses confirmed that Pt(1)Au(24)(SC(2)H(4)Ph)(18) possesses a Pt-centered icosahedral core capped by six Au(2)(SC(2)H(4)Ph)(3) staples. The Pt(1)Au(24)(SC(2)H(4)Ph)(18) cluster exhibits greatly enhanced stability and catalytic activity relative to Au(25)(SC(2)H(4)Ph)(18) but a smaller energy gap (E(g) ≈ 0.8 eV vs 1.3 eV for the homogold cluster).

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Authors
Qian, H., Jiang, D.-E., Li, G., Gayathri, C., Das, A., Gil, R. R., & Jin, R.
Venue
Journal of the American Chemical Society
Publisher
American Chemical Society (ACS)
Published
2012-09-19
Volume
134
Issue
39
Pages
16159-16162
ISSN
  • 0002-7863 (ISSN-L)
  • 1520-5126
DOI
10.1021/ja307657a
OpenAlex
W2081185606
Cited by
500
References
0
FWCI
17.09
Type
journal article
Language
en
Open access
closed

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