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Facile Synthesis of Monodisperse CdS Nanocrystals via Microreaction
CdS-based nanocrystals (NCs) have attracted extensive interest due to their potential application as key luminescent materials for blue and white LEDs. In this research, the continuous synthesis of monodisperse CdS NCs was demonstrated utilizing a capillary microreactor. The enhanced heat and mass t...
Autores principales: | , , , , |
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Formato: | Texto |
Lenguaje: | English |
Publicado: |
Springer
2009
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2893710/ https://www.ncbi.nlm.nih.gov/pubmed/20651917 http://dx.doi.org/10.1007/s11671-009-9454-z |
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author | Wan, Zhen Yang, Hongwei Luan, Weiling Tu, Shan-tung Zhou, Xinggui |
author_facet | Wan, Zhen Yang, Hongwei Luan, Weiling Tu, Shan-tung Zhou, Xinggui |
author_sort | Wan, Zhen |
collection | PubMed |
description | CdS-based nanocrystals (NCs) have attracted extensive interest due to their potential application as key luminescent materials for blue and white LEDs. In this research, the continuous synthesis of monodisperse CdS NCs was demonstrated utilizing a capillary microreactor. The enhanced heat and mass transfer in the microreactor was useful to reduce the reaction temperature and residence time to synthesize monodisperse CdS NCs. The superior stability of the microreactor and its continuous operation allowed the investigation of synthesis parameters with high efficiency. Reaction temperature was found to be a key parameter for balancing the reactivity of CdS precursors, while residence time was shown to be an important factor that governs the size and size distribution of the CdS NCs. Furthermore, variation of OA concentration was demonstrated to be a facile tuning mechanism for controlling the size of the CdS NCs. The variation of the volume percentage of OA from 10.5 to 51.2% and the variation of the residence time from 17 to 136 s facilitated the synthesis of monodisperse CdS NCs in the size range of 3.0–5.4 nm, and the NCs produced photoluminescent emissions in the range of 391–463 nm. |
format | Text |
id | pubmed-2893710 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2009 |
publisher | Springer |
record_format | MEDLINE/PubMed |
spelling | pubmed-28937102010-07-21 Facile Synthesis of Monodisperse CdS Nanocrystals via Microreaction Wan, Zhen Yang, Hongwei Luan, Weiling Tu, Shan-tung Zhou, Xinggui Nanoscale Res Lett Nano Express CdS-based nanocrystals (NCs) have attracted extensive interest due to their potential application as key luminescent materials for blue and white LEDs. In this research, the continuous synthesis of monodisperse CdS NCs was demonstrated utilizing a capillary microreactor. The enhanced heat and mass transfer in the microreactor was useful to reduce the reaction temperature and residence time to synthesize monodisperse CdS NCs. The superior stability of the microreactor and its continuous operation allowed the investigation of synthesis parameters with high efficiency. Reaction temperature was found to be a key parameter for balancing the reactivity of CdS precursors, while residence time was shown to be an important factor that governs the size and size distribution of the CdS NCs. Furthermore, variation of OA concentration was demonstrated to be a facile tuning mechanism for controlling the size of the CdS NCs. The variation of the volume percentage of OA from 10.5 to 51.2% and the variation of the residence time from 17 to 136 s facilitated the synthesis of monodisperse CdS NCs in the size range of 3.0–5.4 nm, and the NCs produced photoluminescent emissions in the range of 391–463 nm. Springer 2009-10-13 /pmc/articles/PMC2893710/ /pubmed/20651917 http://dx.doi.org/10.1007/s11671-009-9454-z Text en Copyright ©2009 to the authors |
spellingShingle | Nano Express Wan, Zhen Yang, Hongwei Luan, Weiling Tu, Shan-tung Zhou, Xinggui Facile Synthesis of Monodisperse CdS Nanocrystals via Microreaction |
title | Facile Synthesis of Monodisperse CdS Nanocrystals via Microreaction |
title_full | Facile Synthesis of Monodisperse CdS Nanocrystals via Microreaction |
title_fullStr | Facile Synthesis of Monodisperse CdS Nanocrystals via Microreaction |
title_full_unstemmed | Facile Synthesis of Monodisperse CdS Nanocrystals via Microreaction |
title_short | Facile Synthesis of Monodisperse CdS Nanocrystals via Microreaction |
title_sort | facile synthesis of monodisperse cds nanocrystals via microreaction |
topic | Nano Express |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2893710/ https://www.ncbi.nlm.nih.gov/pubmed/20651917 http://dx.doi.org/10.1007/s11671-009-9454-z |
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