Abstract
Poly(vinyl pyrrolidone)-capped bismuth nanospheres were synthesized by a simple and convenient wet chemical method. In the process, bismuth nitrate was reduced by ethylene glycol in the presence of poly(vinyl pyrrolidone) (PVP) at 185 °C in air. PVP was used as a protecting agent to prevent oxidation of the sperical bismuth particles. PVP molecules were absorbed on the surface of bismuth nanospheres through the interaction of O-Bi bond which was confirmed by Fourier transform infrared (FT-IR) measurement. The thermal analysis shows the samples contained about 73 wt.% metallic bismuth. The optical absorption spectrum of poly(vinyl pyrrolidone)-capped bismuth nanosphere shows a strong absorption band at 275 nm.
| Original language | English |
|---|---|
| Pages (from-to) | 66-69 |
| Number of pages | 4 |
| Journal | Colloids and Surfaces A: Physicochemical and Engineering Aspects |
| Volume | 340 |
| Issue number | 1-3 |
| DOIs | |
| State | Published - 15 May 2009 |
Keywords
- Bismuth
- Characteristic
- Nanospheres
- Poly(vinyl pyrrolidone)
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