绿色可调的氮、磷和硫共掺杂碳点的制备及应用研究  

Preparation and Application of Green Adjustable Carbon Dots Doped with Nitrogen,Phosphorus and Sulfur

作　　者：夏艳 童玉莲 刘丹[1] 陈安银[1] 王渝 游传绪 XIA Yan;TONG Yu-lian;LIU Dan;CHEN An-yin;WANG Yu;YOU Chuan-xu(School of Chemistry and Chemical Engineering,Sichuan College of Arts and Science,Sichuan Dazhou 635000,China)

机构地区：[1]四川文理学院化学化工学院,四川达州635000

出　　处：《广州化工》2021年第21期47-49,54,共4页GuangZhou Chemical Industry

基　　金：四川省达州市科技局资助项目(20YYJC0001);特色植物开发研究四川省高校重点实验室项目(TSZW2009);四川文理学院水处理研究专项(2018SCL005Y);四川文理学院科研项目(2019PT010Y);四川省大学生创新创业项目(S202110644086)。

摘　　要：以新鲜苦瓜汁为原料,通过水热合成法制备氮、磷、硫掺杂的碳点,建立一种以荧光猝灭测定水中汞离子的分析方法。实验结果显示汞离子的加入使碳点的荧光强度明显降低,在9.1×10-8~6.8×10-5 mol·L^(-1)之间呈现良好的线性关系,其检出限为3.3×10-8 mol·L^(-1)(S/N=3)。该方法的选择性好,灵敏度高,用于达州州河水中汞离子的检测,回收率在99.7%~100.3%之间。To detect the content of mercury ionin water,carbon quantum dots doped with nitrogen,phosphorus and sulphur were prepared by hydrothermal synthesis with fresh bitter melon juice as experimental material.The experimental results showed that the fluorescence intensity of carbon points reduced obviously after adding a certain amount of Hg 2+,and the analytical performance showed a good linear rage of 9.1×10-8~6.8×10-5 mol·L^(-1) with a detection limit of 3.3×10-8 mol·L^(-1).Consequently,the method had good selectivity and high sensitivity.Meanwhile,it was useful to detectthe content of Hg 2+of Dazhou River,and the recovery of this method was between 99.7%and 100.3%.

关 键 词：苦瓜汁 碳点 汞离子 荧光猝灭 

分 类 号：TQ075[化学工程] O655.1[理学—分析化学]