Formation of Ag nanoframes with facilitation of dithiols

Fong Yu Cheng, Kuo Wei Hu, Chen-Sheng Yeh

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Two-dimensional Ag nanoprisms readily formed Ag triangular nanoframes upon electron beam irradiation. Following meso-2, 3-dimercaptosuccinicacid (DMSA) ripening behavior, continuous electron beam exposure transformed a solid nanoplate into a core/void/shell morphology, which then evolved into a hollow nanoframe structure. TEM was used to observe the ripening and etching processes of Ag nanoprisms as a function of DMSA concentration and electron irradiation time. X-ray diffraction (XRD) and FT-IR analysis were conducted to characterize the Ag nanoprism structure and surface before and after treatment with DMSA. X-ray photoelectron spectroscopy (XPS) was used to determine surface chemical compositions and indicated DMSA was adsorbed on the Ag nanoprisms in the form of Ag +-S-. Raman measurements provided evidence of a disulfide group on Ag nanoprisms. Similar organosulfur structures such as mercaptosuccinic acid and 2- mercaptoacetic acid were also studied with results suggesting that the two S-H groups of dithiol DMSA played the crucial role in nanoframe fabrication. Using the same strategy with DMSA, the nano-architecture can be extended to 2D nanodiscs yielding nanorings.

Original languageEnglish
Pages (from-to)2548-2556
Number of pages9
JournalJournal of Nanoscience and Nanotechnology
Volume12
Issue number3
DOIs
Publication statusPublished - 2012 Jul 3

Fingerprint

thiols
Electron beams
Nanorings
electron beams
Electrons
acids
irradiation
Electron irradiation
Acids
disulfides
electron irradiation
Disulfides
voids
Etching
Photoelectron Spectroscopy
hollow
chemical composition
x rays
X ray photoelectron spectroscopy
etching

All Science Journal Classification (ASJC) codes

  • Medicine(all)

Cite this

Cheng, Fong Yu ; Hu, Kuo Wei ; Yeh, Chen-Sheng. / Formation of Ag nanoframes with facilitation of dithiols. In: Journal of Nanoscience and Nanotechnology. 2012 ; Vol. 12, No. 3. pp. 2548-2556.
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Formation of Ag nanoframes with facilitation of dithiols. / Cheng, Fong Yu; Hu, Kuo Wei; Yeh, Chen-Sheng.

In: Journal of Nanoscience and Nanotechnology, Vol. 12, No. 3, 03.07.2012, p. 2548-2556.

Research output: Contribution to journalArticle

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