石墨烯/CdTe量子点复合物的合成及在克伦特罗检测方面的应用
Graphene/CdTe Quantum Dots Composites: Synthesis and Application on Clenbuterol Detection
作者单位E-mail
金丽 吉林化工学院化学与制药工程学院, 吉林 132022  
张棵实 吉林化工学院化学与制药工程学院, 吉林 132022  
刘芳同 吉林化工学院化学与制药工程学院, 吉林 132022  
王影 吉林化工学院化学与制药工程学院, 吉林 132022  
张建坡 吉林化工学院化学与制药工程学院, 吉林 132022 zhangjp725@126.com 
摘要: 成功地合成了石墨烯/CdTe量子点复合物,并采用透射电镜、紫外吸收光谱、荧光发射光谱、荧光衰减曲线和X射线光电子能谱对产物进行了表征。透射电镜结果显示CdTe量子点被修饰于石墨烯的表面;X射线光电子能谱结果表示石墨烯在合成过程中被还原,还表明在所合材料的表面具有羧基和羟基;荧光发射光谱和荧光衰减曲线的结果显示将CdTe量子点修饰于石墨烯表面显著提高了CdTe量子点的荧光性能。此外,基于克伦特罗和石墨烯/CdTe量子点复合物之间形成的氢键,所合成材料可用于定量分析克伦特罗。克伦特罗对石墨烯/CdTe量子点复合物具有显著的猝灭作用,荧光强度的降低(F0/F)与克伦特罗之间存在良好的线性关系,线性范围为7.22~108.30 μmol·L-1,检出限为4 μmol·L-1
关键词: 石墨烯/CdTe量子点复合物  合成  表征  荧光探针
基金项目: 国家自然科学基金(No.21405058)资助项目。
Abstract: Graphene/CdTe quantum dots composites had been successfully synthesized, which was characterized by using transmission electron microscope, absorbance spectrum, fluorescence emission spectrum, fluorescence decay curve and X-ray photoelectron spectroscopy. Transmission electron microscope results indicate that CdTe quantum dots have successfully decorated on the surface of graphene. X-ray photoelectron spectroscopy results indicate that graphene has been reduced and have carboxyl and hydroxyl groups on its surface. Fluorescence emission spectrum indicate that the fluorescence property of CdTe quantum dots has been significantly improved after decorating CdTe quantum dots on the surface of graphene. Furthermore graphene/CdTe quantum dots composites were used to quantitative analysis clenbuterol base on the formation of hydrogen bond between clenbuterol and graphene/CdTe quantum dots composites. The fluorescence of graphene/CdTe quantum dots composites can be efficiently quenched by clenbuterol, and there is a good line relationship between the fluorescence intensity decreasing (F0/F) and the concentration of clenbuterol in the range from 7.22~108.30 μmol·L-1 with the detection limit of 4 μmol·L-1.
Keywords: Graphene/CdTe composites  synthesis  characterization  fluorescent probe
投稿时间:2017-10-24 修订日期:2017-12-04
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金丽,张棵实,刘芳同,王影,张建坡.石墨烯/CdTe量子点复合物的合成及在克伦特罗检测方面的应用[J].无机化学学报,2018,34(4):767-776.
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