Droplet-Based Microfluidic Reactor for Synthesis of Size-Controlled CdSe Quantum Dots
| Autor: | Changhyun Roh, Soonjo Kwon, Sung Sil Lee, Cheol Hwan Kwak, Yun Suk Huh, Sang-Wook Kim, Rethinasabapathy Muruganantham, Joong Pill Park |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Materials science
Photoluminescence Absorption spectroscopy Batch reactor Microfluidics Biomedical Engineering Bioengineering 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics medicine.disease_cause 01 natural sciences 0104 chemical sciences Chemical engineering Transmission electron microscopy Quantum dot medicine General Materials Science 0210 nano-technology Spectroscopy Ultraviolet |
| Zdroj: | Journal of Nanoscience and Nanotechnology. 18:1339-1342 |
| ISSN: | 1533-4880 |
| DOI: | 10.1166/jnn.2018.14918 |
| Popis: | CdSe quantum dots (QDs) with a uniform size distribution were synthesized using a droplet-based microfluidic reactor. The droplet-based microfluidic reactor enabled continuous production of CdSe QDs at a temperature of less than 250 °C in an extremely shorter reaction time (less than 30 s) when compared with the batch reactor. The photoluminescence (PL) and ultraviolet (UV) absorption spectra of the CdSe QDs were recorded at different reaction times and the size and optical properties of the QDs were discussed. The structure morphology and elemental composition of the CdSe QDs were determined using a transmission electron microscopy (TEM) and electrondispersive spectroscopy (EDS). The size of CdSe QDs prepared using the microfluidic reactor was estimated to be from 1.6 to 2.6 nm with an average size of 2.2 nm. This droplet-based microfluidic reactor has the potential to be automated system continuous synthesis of CdSe QDs. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|