| 초록 |
Silver (Ag) nanoparticles have been applied in many fields. However, since Ag nanoparticles are easily aggregate to minimize their surface areas in the solution phase, various methods using polymers as support materials were developed for the immobilization of Ag nanoparticles. Alginate which is one of the biocompatible hydrogel polymers was used in this work because it can be easily crosslinked with cations, and it can cap and stabilize metal nanoparticles. There are a lot of ways to synthesize and immobilize Ag nanoparticles, however, most of them still use a two-step method in which hydrogel polymer is crosslinked first before the Ag precursor is reduced. In this study, an easy one-step method, where crosslinking of a hydrogel polymer and Ag nanoparticles formation occurred at the same time, is introduced. It is easy to see that silver nanoparticles are reduced by changing the color. The as-prepared Ag/Alginate beads showed high catalytic activity and excellent reusability. |
