CdSe/SiO2核壳荧光纳米颗粒的制备与表征

doi:10.3969/j.issn.1007-2985.2014.04.015

journal6 ›› 2014, Vol. 35 ›› Issue (4): 64-68.DOI: 10.3969/j.issn.1007-2985.2014.04.015

CdSe/SiO₂核壳荧光纳米颗粒的制备与表征

王益林，杨昆，冯沛，周少城，农雄机，秦泽华

(1.广西大学化学化工学院，广西南宁 530004；2.广西大学材料科学与工程学院，广西南宁 530004)

出版日期:2014-07-25 发布日期:2014-07-21
作者简介:王益林(1968-)，男，湖南邵东人，广西大学化学化工学院副教授，主要从事荧光纳米材料的合成与应用研究.
基金资助:
广西壮族自治区教育厅科学研究项目(2013YB014)

Preparation and Characterization of CdSe/SiO₂ Core Shell Luminescent Nanoparticles

WANG Yi-Lin, YANG Kun, FENG Pei, ZHOU Shao-Cheng, NONG Xiong-Ji, QIN Ze-Hua

(1.School of Chemistry and Chemical Engineering,Guangxi University,Nanning 530004,Guangxi China;2.School of Materials Science and Engineering,Guangxi University,Nanning 530004,Guangxi China)

Online:2014-07-25 Published:2014-07-21

摘要/Abstract

摘要：以巯基丁二酸为稳定剂，二氧化硒为硒源，合成高质量水溶性CdSe量子点.采用反相微乳液技术，制备以CdSe量子点为核的SiO₂荧光纳米颗粒.在pH值为11.0的碱性条件下，当n_Cd∶n_Se∶n_MSA=1∶0.2∶1.4时，在540 min时间内，可获得荧光发射峰在531~554 nm范围内连续可调CdSe量子点，最高荧光量子产率值可达14.7%.分别用紫外-可见光谱、荧光光谱、X射线粉末衍射和透射电镜等对CdSe量子点进行表征，用荧光光谱、透射电镜、红外光谱等对CdSe/SiO₂荧光纳米颗粒的性能进行表征.

关键词： 反相微乳液, 核壳结构, 纳米颗粒, 发光

Abstract: High quality CdSe quantum dots were prepared in an aqueous medium with selenium dioxide as selenium source and mercaptosuccinic acid as stabilizer.And the core-shell CdSe/SiO₂ nanoparticles were prepared via reverse microemulsion method.The CdSe QDs with the emission peak ranging from 531 to 554 nm could be prepared when pH was 11.0 and n_Cd∶n_Se∶n_MSA= 1∶0.2∶1.4 within 540 min,and the maximum quantum yield was 14.7%.The properties of the obtained CdSe quantum dots and CdSe/SiO₂ nanoparticles were characterized by UV-vis absorption spectra,photoluminescence spectra,X-ray powder diffraction,transmission electron microscopy and Fourier transform infrared spectroscopy,respectively.

Key words: reverse microemulsion, core-shell structure, nanoparticles, luminescence

王益林, 杨昆, 冯沛, 周少城, 农雄机, 秦泽华. CdSe/SiO₂核壳荧光纳米颗粒的制备与表征[J]. journal6, 2014, 35(4): 64-68.

WANG Yi-Lin, YANG Kun, FENG Pei, ZHOU Shao-Cheng, NONG Xiong-Ji, QIN Ze-Hua. Preparation and Characterization of CdSe/SiO₂ Core Shell Luminescent Nanoparticles[J]. journal6, 2014, 35(4): 64-68.

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CdSe/SiO₂核壳荧光纳米颗粒的制备与表征

Preparation and Characterization of CdSe/SiO₂ Core Shell Luminescent Nanoparticles

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