EFFECT OF CHAIN LENGTH OF OXYETHYLENE GROUP ON PARTICLE SIZE AND ABSORPTION SPECTRA OF SILVER NANOPARTICLES PREPARED IN NON-IONIC WATER-IN-OIL MICRO EMULSIONS
作者:
RahulP. Bagwe,
BijayaK. Mishra,
KarticC. Khilar,
期刊:
Journal of Dispersion Science and Technology
(Taylor Available online 1999)
卷期:
Volume 20,
issue 6
页码: 1569-1579
ISSN:0193-2691
年代: 1999
DOI:10.1080/01932699908943873
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
The formation of silver nanoparticles by the method of reduction of silver ions by sodium borohydride in non-ionic water-in-oil microemulsion was investigated as a function of structure of the surfactant. Three types of non-ionic surfactants were selected differing in the chain length of the oxyethylene groups for example: NP-5, NP-9 and NP-11. The silver nanoparticles were characterized by UV-Visible Absorption Spectroscopy and Transmission Electron Microscopy. TEM. The results of this study showed that the panicle size is relatively smaller incase of NP-9 while for NP-5 and NP-11 the sizes are comparable. This obsevation is explained on the basis of structure of the droplets and the influence of Intermicellar exchange on nucleation and growth of particles.
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