| 초록 |
In the current work, we report a reliable, cost-effective, and rapid method for the detection of barium ion. Specifically, we use triangular silver nanoplates as a colorimetric detection probe for barium ion. Exposed to the particular etchant, triangular silver nanoplastes displayed a clear color change because of their shape transformation. However, in the existence of barium ion, the shape of the nanoplates preserved after being exposed to the etchant. The rate of change of the color and spectral features of Ag nanoplate solution exposed to the etchant was found to be strongly correlated with the concentration of barium ion in the solution: for a fixed etchant concentration and aging time, the Ag nanoplate colloidal solutions aged with different concentrations of barium ion showed different resulting colors. Based on this association, we developed a simple platform for sensing barium. |
