Ce^(3+)掺杂碳量子点荧光检测2,4-二硝基酚的研究  

Fluorescence analysis of 2,4-dinitrophenol by Ce^(3+)-doped carbon quantum dots

作　　者：王梓良 闫新雨 田忠贞 Wang Ziliang;Yan Xinyu;Tian Zhongzhen(Inner Mongolia Key Laboratory of Coal Chemical Engineering&Comprehensive Utilization,School of Chemistry and Chemical Engineering,Inner Mongolia University of Science&Technology,Baotou 014010)

机构地区：[1]内蒙古科技大学化学与化工学院,包头014010

出　　处：《化工新型材料》2023年第2期271-274,共4页New Chemical Materials

基　　金：内蒙古自治区自然科学基金项目(2020MS02016和2020MS02006);国家自然科学基金(32060623)。

摘　　要：水中2,4-二硝基酚的分析检测具有重要意义。以胡麻籽壳为碳源,1-己基-3-甲基咪唑氯盐为溶剂,绿色制备了铈掺杂的碳量子点(LCQDs)。透射电镜结果表明所得LCQDs呈球状,粒径范围1~9nm。基于2,4-二硝基酚对LCQDs的特异性荧光淬灭作用建立了一种2,4-二硝基酚的荧光分析方法,最佳实验条件下,检出限为1.8μmol/L。该方法用于实际水样检测时,回收率可达94.6%~103.5%。The analysis and detection of 2,4-dinitrophenol in water is of great significance.In this paper, Ce^(3+)-doped carbon quantum dots(LCQDs) were prepared using flax seed shell as carbon source and 1-hexyl-3-methylimidazolium chloride as solvent.Transmission electron microscopy(TEM) tests showed that LCQDs were spherical particles with sizes ranging from 1 to 9nm.A fluorescence analysis method for 2,4-dinitrophenol was established based on the specific fluorescence quenching effect of 2,4-dinitrophenol on LCQDs.Under optimal experimental conditions, the detection limit of LCQDs for 2,4-dinitrophenol was 1.8μmol/L.When this method was used for actual sample analysis, the recovery rate was 94.6%~103.5%.

关 键 词：胡麻籽壳 Ce^(3+)掺杂 碳量子点 2 4-二硝基酚 

分 类 号：O482.31[理学—固体物理]