科研之友
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摘要
A rapid way of synthesizing silver nanoparticles by treating silver ions with a green Capsicum annum L. alcoholic fruit extract containing principally polyphenols, pigments, capsaicin and ascorbic acid is reported. The reaction protocol was monitored using UV-visible spectroscopy. Accordingly, the entire span of experimentation has been proposed in the form of a mathematical model in the light optical dependence of maturing Ag nanoparticles. The crystalline morphology and phase of the nanoparticles were determined with the help of transmission electron microscopy, selected area electron diffraction and X-ray diffraction studies. Nanoparticles almost spherical in shape having a size of 2-6 nm are found. The results indicated that the extract, which has capsaicin containing amine groups along with other candidate polyphenols and ascorbic acid, played a reducing and controlling role during the formation of silver nanoparticles in the solutions of green Capsicum annuum L. fruit.
- 出版日期2011-12
