Abstract
The silver nanoparticles were fabricated by the focused laser irradiation to silver rod immersed in various kinds of surfactant aqueous solutions. It was found that anionic and cationic surfactants showed different roles on the silver nanoparticle growth during the focused laser irradiation processes. Silver nanoparticle synthesis in an amphoteric surfactant aqueous solution was also carried out using the same techniques, and it was found that the spectral shifts for these surface plasmon bands showed complicated behaviors against the concentration of amphoteric surfactants as well as pH. Furthermore, the influence of the gas dissolved in a solution on the silver nanoparticle growth during the focused laser irradiation processes was investigated. With increasing the gas pressure of CO2, the surface plasmon bands of silver nanoparticles were shifted to longer wavelength, suggesting that the dissolved gas of CO2 in a solution enhances the silver nanoparticle growth. The plausible mechanism was proposed to understand the reason of such enhancement of silver nanoparticle growth by increasing the dissolved gas in a solution.
Highlights
Nanoscale materials have attracted much attention due to their unique properties being different from their bulk materials [1]
The relationship between the surface plasmon absorption band of metal nanoparticles and its particle size has been thoroughly investigated by Slistan-Grijalva et al [6], and they concluded that the peak of surface absorption band in spherical silver nanoparticles was proportional to the particle size up to 20 nm
The wavelength for the maximum absorption of the surface plasmon absorption spectra of silver nanoparticles formed by the focused laser irradiation of an aqueous solution containing
Summary
Nanoscale materials have attracted much attention due to their unique properties being different from their bulk materials [1]. As an example of the investigations on the influence of a cationic surfactants, Chen and Yeh [4] have investigated the particle diameters of silver nanoparticles formed by the laser ablation of silver rod from the enlarged transmission electron photographs and found that the particle diameters were 4.2 nm and 7.8 nm with the addition of the anionic SDS and the cationic cetyltrimethylammonium bromide (denoted by CTAB hereafter), respectively. They concluded that the ISRN Physical Chemistry
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
