Publications
Detailed Information
Size control of semimetal bismuth nanoparticles and the UV-visible and IR absorption spectra
Cited 115 time in
Web of Science
Cited 124 time in Scopus
- Authors
- Issue Date
- 2005-04
- Publisher
- American Chemical Society
- Citation
- The Journal of Physical Chemistry B, Vol.109 No.15, pp.7067-7072
- Abstract
- We introduced a simple chemical rnethod to synthesize semimetal bismuth nanoparticles in N,N-dimethylformamide (DMF) by reducing Bi3+ with sodium borohydride (NaBH4) in the presence of poly(vinylpyrroldone) (PVP) at room temperature. The size and dispersibility of Bi nanoparticles can be easily controlled by changing the synthetic conditions such as the molar ratio of PVP to BiCl3 and the concentration of BiCl3. The UV-visible absorption spectra of Bi nanoparticles of different diameters are systematically studied. The surface plasmon peaks broaden with the increasing molar ratio of PVP to BiCl3 as the size of bismuth nantoparticles decreases. Infrared (IR) spectra of the complexes with different molar ratios of PVP/BiCl3 show a strong interaction between the carboxyl oxygen (C=O) of PVP and Bi3+ ion and a weak interaction between the carboxyl oxygen (C=O) of PVP and the Bi atom in nanoparticles. This indicates that PVP serves as an effective capping ligand, which prevents the nanoparticles from aggregation.
- ISSN
- 1520-6106
- Files in This Item:
- There are no files associated with this item.
- Appears in Collections:
Item View & Download Count
Items in S-Space are protected by copyright, with all rights reserved, unless otherwise indicated.