Controllable synthesis and characterization of CdS quantum dots by a microemulsion-mediated hydrothermal method
Controllable synthesis and characterization of CdS quantum dots by a microemulsion-mediated hydrothermal method
复制标题
微乳液介导的水热法可控合成CdS量子点及表征
DOI：
10.1016/j.jlumin.2015.12.006
复制
发表时间：
2016-04
影响因子：
3.6
通讯作者：
Mai Yaohua
中科院分区：
文献类型：
--
作者：
Chen Rongrong;Han Boning;Yang Lin;Yang Yanmin;Xu Ying;Mai Yaohua
采用微乳液水热法，以乙酸镉为原料，与硫代乙酰胺发生化学反应，成功合成了CdS量子点。用乳化剂OP和表面活性剂CTAB可以控制CdS量子点的性质，使其分别形成一种通用的立方相和一种特殊的六方相。作为比较，CTAB法制备的CdS量子点具有更好的结晶性和稳定性。本文还探讨了表面活性剂在晶体结构形成中的关键作用的可能机理。随着温度的升高，晶体的尺寸逐渐增大，吸收峰和发射峰的红移现象表明了量子限制效应的存在。本研究中合成的CdS量子点的所有预期性质意味着在适当的反应条件下制备高质量量子点的可能性。
CdS QDs were successfully synthesized through a chemical reaction between cadmium acetate dehydrate and thioacetamide by using a microemulsion-mediated hydrothermal method. The properties of as-prepared CdS QDs can be controlled by using Emulsifier OP and CTAB surfactant, which produce a universal cubic phase and an unusual hexagonal phase, respectively. As a comparison, CdS QDs prepared by CTAB exhibit a better crystallinity and dispersibility. A possible mechanism involving the critical role of surfactant in the formation of crystal structure has also been explored in this paper. It is also found that the crystal size gradually increase with the increase of temperature, and the observation of red-shift in the absorption and emission peaks gives a clear evidence of the quantum confinement effect. All the desired properties of CdS QDs synthesized in this study imply the possibility of the preparation of high quality QDs under the appropriate reaction conditions.
登录
查看更多内容
具有可调形貌的 CdS 分级纳米结构：制备和光催化性能
DOI：
10.1021/jp1049588
发表时间：
2010-07
期刊：
J. Phys. Chem. C
影响因子：
--
作者：
Baojuan Xi;Shenglin Xiong;Yitai Qian
通讯作者：
Yitai Qian
影响因子：
29.4
作者：
H. Masuda;T. Yanagishita;K. Yasui;K. Nishio;Ichizo Yagi;T. Rao;A. Fujishima
通讯作者：
H. Masuda;T. Yanagishita;K. Yasui;K. Nishio;Ichizo Yagi;T. Rao;A. Fujishima
影响因子：
3.6
作者：
N. Mobedi;M. Marandi;H. Z. Bidaki
通讯作者：
N. Mobedi;M. Marandi;H. Z. Bidaki
影响因子：
22.1
作者：
Xiang, Quanjun;Cheng, Bei;Yu, Jiaguo
通讯作者：
Yu, Jiaguo
影响因子：
4.6
作者：
Huaming Yang;Chenghuan Huang;Xianwei Li;Rongrong Shi;Ke Zhang
通讯作者：
Huaming Yang;Chenghuan Huang;Xianwei Li;Rongrong Shi;Ke Zhang