ZnS:Eu@ZIF-8 复合材料的制备及其用于 荧光检测 2,4,6-三硝基苯酚

doi:10.16597/j.cnki.issn.1002-154x.2023.04.003

ZnS:Eu@ZIF-8 复合材料的制备及其用于荧光检测 2,4,6-三硝基苯酚

王倩1 初红涛1∗ 赵希波2 张婧如1 秦世丽1 高立娣1

(1. 齐齐哈尔大学 化学与化工学院,黑龙江 齐齐哈尔 161000; 2. 齐齐哈尔建华医院,黑龙江 齐齐哈尔 161000)

Preparation of ZnS:Eu@ZIF-8 Composites and Their Use for Fluorescence Detection of 2,4,6-trinitrophenol

Wang Qian1 Chu Hongtao1∗ Zhao Xibo2 Zhang Jingru1 Qin Shili1 Gao Lidi1

(1. School of Chemistry and Chemical Engineering, Qiqihar University, Heilongjiang Qiqihar, 161000; 2. Jianhua Hospital of Qiqihar, Heilongjiang Qiqihar, 161000)

摘要:

通过一锅法制备了 ZnS:Eu@ZIF-8 材料。 稀土离子(Eu³⁺)作为激活剂,提高了纳米材料的稳定性和发光性能,可用于选择性检测 2,4,6-三硝基苯酚(TNP)。 采用 FTIR 光谱、粉末 X 射线衍射、扫描透射电子显微镜与光致发光光谱相结合对材料进行了表征。 实验结果表明,随着 TNP 浓度的增加,Zn²⁺在 437 nm 的特征峰和 Eu³⁺在 658 nm 的 特征峰的强度逐渐降低。 荧光猝灭效率 ΔF 与目标物的浓度呈良好的线性关系。 TNP 检测的线性范围和检出限分别为 10~100μmol·L^-1 和 0.19 μmol·L^-1。 将该方法用于实验室自来水中 TNP 的加标检测,获得了较好的结果。

关键词：ZnS Eu 光致发光 荧光探针 2,4,6-三硝基苯酚；

Abstract：

ZnS:Eu@ ZIF- 8 materials were prepared by a one-pot method, which improved the stability and luminescence of the nanomaterials by doping with rare earth ions (Eu³⁺ ) as activators for the selective detection of 2, 4,6 - trinitrophenol ( TNP ). Characterisation was carried out by FTIR spectroscopy, powder X-ray diffraction, scanning transmission electron microscopy combined with photoluminescence spectroscopy. The results showed that the synthesised ZnS:Eu@ ZIF-8 material was selective for TNP. It was found that the intensity of the characteristic peaks of Zn²⁺ at 437 nm and Eu³⁺ at 658 nm decreased gradually with the increasing TNP concentration. The linear range and detection limits of TNP detection were 10 ~ 100 μmol·L^-1 and 0. 19 μmol·L^-1 , respectively. The method was applied to the spiked detection of TNP in laboratory tap water and good results were obtained.

Keywords：ZnS; Eu; photoluminescence; fluorescent probe; 2,4,6-trinitrophenol;