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Preparation of Au colloids by polyol process using NaHCO3 as a buffering agent
- Issue Date
- Nov-2006
- Publisher
- Elsevier BV
- Keywords
- gold; nanoparticles; polyol; sodium bicarbonate; PVP
- Citation
- Materials Chemistry and Physics, v.100, no.1, pp 85 - 91
- Pages
- 7
- Indexed
- SCIE
SCOPUS
- Journal Title
- Materials Chemistry and Physics
- Volume
- 100
- Number
- 1
- Start Page
- 85
- End Page
- 91
- ISSN
- 0254-0584
1879-3312
- Abstract
- An nanoparticles were synthesized by polyol process with sodium bicarbonate (NaHCO3) as a pH-buffering agent. The introduction of NaHCO3 to polyol process made it possible to lower the reaction temperature and shorten the reduction time. In this study, the effects of the NaHCO3/Au weight ratios and the PVP concentrations on the reduction rate of AlCl4- and the particle size of An nanoparticles were investigated. The NaHCO3/Au weight ratio was varied from 0.2 to 10. The reduction rate of AuCl4- was observed by the speeds of the color changes of the mixtures. UV-vis spectra and electron microscopic images indicated that the size of An nanoparticles was determined by the NaHCO3/Au weight ratios and the PVP concentrations.
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Related Researcher
- Oh, Seong-Geun
- COLLEGE OF ENGINEERING (DEPARTMENT OF CHEMICAL ENGINEERING)