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HIERARCHICAL SILVER NANOSTRUCTURE FROM HYDROGEN PEROXIDE-REDUCED SILVER ACETATE |
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| รหัสดีโอไอ | |
| Title | HIERARCHICAL SILVER NANOSTRUCTURE FROM HYDROGEN PEROXIDE-REDUCED SILVER ACETATE |
| Creator | Parinton Jangtawee |
| Contributor | Sanong Ekgasit, Chuchaat Thammacharoen |
| Publisher | Chulalongkorn University |
| Publication Year | 2557 |
| Keyword | Nanocrystals, Metal crystals, Silver -- Microstructure, ผลึกนาโน, ผลึกโลหะ, เงิน -- โครงสร้างจุลภาค |
| Abstract | Ag microstructures were synthesized with a reaction between silver acetate (CH3COOAg) and hydrogen peroxide (H2O2) without surfactant or capping agent under ambient condition in 2 min. They were characterized with spectroscopy techniques. Ag microstructures showed dendritic pattern on their surface with single crystal XRD pattern. Rate of the reaction plays an important role on structural control. Acetate ion spontaneously binds with Ag surface and organic solvents with the other end. Ag microstructures were also controlled by changing the surface property. Different Ag microstructures synthesized from different conditions were tested on SERS with R6G as the probe molecule. Roughness on the Ag surface represents dendritic pattern which provides nanogaps to enhance the Raman signal. The migration of plasticizers from food wraps was detected by SERS technique using Ag microstructures as the substrate. Moreover, growth evolution of Ag microstructures was also discussed. |
| URL Website | cuir.car.chula.ac.th |
