Preparation and characterization of size controllable spherical silver nanoparticles
| Autor: | Renqiang Yang, Shun-pin Li, Ailing Yang, Xichang Bao, Yu-jin Wang |
|---|---|
| Rok vydání: | 2014 |
| Předmět: |
Diffraction
Materials science Absorption spectroscopy technology industry and agriculture Nanotechnology Condensed Matter Physics medicine.disease_cause Atomic and Molecular Physics and Optics Silver nanoparticle Electronic Optical and Magnetic Materials Characterization (materials science) Chemical engineering Transmission electron microscopy medicine Electrical and Electronic Engineering Ultraviolet Stabilizer (chemistry) |
| Zdroj: | Optoelectronics Letters. 10:164-167 |
| ISSN: | 1993-5013 1673-1905 |
| DOI: | 10.1007/s11801-014-4005-y |
| Popis: | By adjusting pH values of reactant system, the mass ratio of stabilizer/water and aging temperature, size controllable spherical silver nanoparticles (NPs) were synthesized. The properties of silver NPs are characterized by X-ray diffraction (XRD), transmission electron microscope (TEM) and ultraviolet visible (UV-VIS) absorption spectra. Within the pH values of 7.0–11.0, the aging temperature of 80 °C is better to improve silver NPs in shape to nearly sphere, concentrate size distribution and reduce aggregation than the aging temperature of 25 °C. The shape and dispersibility of silver NPs are the best when the pH of the reactant system is within 7.0–8.0. With pH of 7.5, aging at 80 °C, and stabilizer/water mass ratio of 1%, the spherical silver NPs with sizes of 50–70 nm were synthesized. The results are promising to be used to synthesize core/shell NPs when silver NPs are as core. |
| Databáze: | OpenAIRE |
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