Enhancement of the Quantum Yield of Hydrothermally Synthesized Carbon Nanodots.
| Autor: | 羅文鍵 |
|---|---|
| Rok vydání: | 2014 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 102 This study prepared carbon nanodots (CNDs) by the hydrothermal method using precursors such as L-glutamine, L-glutamic acid, L-ascorbic acid, and egg white. The solvent was deionized water. It is expected to enhance the quantum yield (QY) of the hydrothermal product by adding in different additives in the hydrothermal process. The synthesized CNDs were analyzed using the laser particle sizer, UV-Vis spectrometer, and fluorescence spectrometer. The results showed that the CNDs were all less than 100 nm in diameter, that they emitted purple light between 380 nm and 450 nm under the irradiation of 300 nm ultraviolet light, that the QY of the samples from L-glutamic acid might pass over 10%, and that some additives could raise the QY of the CNDs by an order of magnitude. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
| Externí odkaz: |
|