文献类型：期刊文献

英文题名：Facile Synthesis of Monodisperse CdS Nanocrystals via Microreaction

作者：Wan, Zhen[1];Yang, Hongwei[1];Luan, Weiling[1];Tu, Shan-tung[1];Zhou, Xinggui[2]

机构：[1]E China Univ Sci & Technol, Sch Mech & Power Engn, State Key Lab Safety Sci Pressurized Syst, Shanghai 200237, Peoples R China;[2]E China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China

年份：2010

卷号：5

期号：1

起止页码：130

外文期刊名：NANOSCALE RESEARCH LETTERS

收录：;EI(收录号：20102212974821);WOS:【SCI-EXPANDED(收录号:WOS:000272916400020)】；

基金：Authors appreciated the financial supports from the NSFC (50772036), The Focus of Scientific and Technological Research Projects (109063) and the State Key Laboratory of Chemical Engineering at ECUST (SKL-ChE-08C09).

语种：英文

外文关键词：Microreaction; Quantum dots; CdS; Nanocrystals

摘要：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.