Relationship between Ag nanoparticles and Ag ions prepared by arc discharge method

• Main Authors: Tseng Kuo-Hsiung, Chou Chih-Ju, Liu To-Cheng, Tien Der-Chi, Chang Chun Yung, Stobinski Leszek
• Format: Article
• Language: English
• Published: De Gruyter 2018-02-01
• Series: Nanotechnology Reviews
• Subjects: colorimetry; nano silver colloid; silver ions; submerged arc discharge method
• Online Access: https://doi.org/10.1515/ntrev-2017-0167

This study used the submerged arc discharge method (SADM) to produce metal fluid containing nanoparticles and submicron particles, whereby the energy focused by an electric arc was used to disintegrate silver (Ag) metal in deionized water (DW). No additional chemical substances were required throughout the process, which enabled production to be fast and straightforward. This study proposed using colorimetry to define the interrelation between concentration and nano Ag as well as the Ag ions (Ag+) within a nano silver colloid (NSC) of a specific dilution factor, involving ultraviolet-visible (UV-Vis) spectroscopy and the measuring of electrical conductivity. The results showed that Ag+ activity increased under various dilution conditions, displaying an upward trend in activity with an increase in the dilution factor. The absorption values of Ag+ and nanoparticles increased over time, and the Ag+ activity increased by up to a factor of two after its dilution. Therefore, the Ag+ and nanoparticles demonstrated an interdependence between each other.