摘要
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.
| 源语言 | 英语 |
|---|---|
| 页（从-至） | 66-69 |
| 页数 | 4 |
| 期刊 | Colloids and Surfaces A: Physicochemical and Engineering Aspects |
| 卷 | 340 |
| 期 | 1-3 |
| DOI | |
| 出版状态 | 已出版 - 15 5月 2009 |