[1]张艳秋,孙旻睿,杜尔登,等.Eu3+修饰配位聚合物的构筑及对水中Pb2+的荧光检测[J].常州大学学报(自然科学版),2022,34(05):39-47.[doi:10.3969/j.issn.2095-0411.2022.05.006]
　ZHANG Yanqiu,SUN Minrui,DU Erdeng,et al.Fluorescent Detection of Pb2+ in Water Environment by a Eu3+ Functionalized Coordination Polymer[J].Journal of Changzhou University(Natural Science Edition),2022,34(05):39-47.[doi:10.3969/j.issn.2095-0411.2022.05.006]
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Eu3+修饰配位聚合物的构筑及对水中Pb2+的荧光检测()
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常州大学学报(自然科学版)[ISSN:2095-0411/CN:32-1822/N]

卷:
第34卷
期数:
2022年05期
页码:
39-47
栏目:
环境科学与工程
出版日期:
2022-09-28

文章信息/Info

Title:
Fluorescent Detection of Pb2+ in Water Environment by a Eu3+ Functionalized Coordination Polymer
文章编号:
2095-0411(2022)05-0039-09
作者:
张艳秋; 孙旻睿; 杜尔登; 许霞; 彭明国
(常州大学环境与安全工程学院,江苏常州213164)
Author(s):
ZHANG Yanqiu;  SUN Minrui;  DU Erdeng;  XU Xia;  PENG Mingguo
(School of Environmental & Safety Engineering, Changzhou University, Changzhou 213164, China)
关键词:
配位聚合物;  后修饰;  荧光;  检测;  铅离子
Keywords:
coordination polymer;  post-modification;  fluorescence;  detection;  lead ions
分类号:
X 502
DOI:
10.3969/j.issn.2095-0411.2022.05.006
文献标志码:
A
摘要:
通过水热法制备钼多酸型配位聚合物((4-Hap)4(Mo8O26)),利用后合成方法修饰Eu3+,构建具备荧光性能的复合材料Eu@[(4-Hap)4(Mo8O26)]用于水环境Pb2+的检测。采用X-射线衍射仪、扫描电镜、傅里叶红外光谱仪、荧光光谱仪等对Eu@[(4-Hap)4(Mo8O26)]结构及性能进行表征,并考察其对水环境中Pb2+的检测性能。结果表明,Eu@[(4-Hap)4(Mo8O26)]的形貌、结构与(4-Hap)4(Mo8O26)基本一致,且在320 nm的紫外光照射下,在618 nm处出现新的红色荧光发射峰。该荧光发射峰强度在水环境中保持稳定,且当水环境中存在Pb2+时,被迅速(8 min)猝灭,检测限可达0.036 μmol/L(7.5 μg/L),检测性能不受其他水中常见离子干扰,为水体Pb2+的灵敏检测提供了一种简单可靠的新方法。
Abstract:
Polyoxomolybdate-based coordination polymer((4-Hap)4(Mo8O26))was prepared by hydrothermal method and used in Pb2+ detection in water environment. The fluorescence composite, Eu@[(4-Hap)4(Mo8O26)], was further constructed by doping Eu3+ cations to(4-Hap)4(Mo8O26). The prepared composite was characterized by X-ray diffraction(XRD), scanning electron microscopy(SEM),Fourier transform infrared spectra(FT-IR), fluorescent spectroscopy. Eu@[(4-Hap)4(Mo8O26)] was used as a fluorescence sensor to investigate the detection performance of Pb2+ in water. Results show that the morphology and structure of Eu@[(4-Hap)4(Mo8O26)] are basically the same as that of(4-Hap)4(Mo8O26), and a new red emission peak appears at 618 nm under the irradiation of 320 nm UV light. The fluorescence emission peak intensity remained stable in water environment, and it was quenched rapidly(8 min)when Pb2+ was present in the water environment. The detection limit can reach to 0.036 μmol/L(7.5 μg/L), and the detection performance remains stable in the presence of other common ions in water, which provided a new method for Pb2+ detection in water with high sensitivity.

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(责任编辑:谭晓荷)

备注/Memo

备注/Memo:
收稿日期: 2022-02-20。
基金项目: 江苏省自然科学基金资助项目(BK20210856); 常州市科技支撑计划(应用基础)资助项目(CJ20210117); 常熟市科技发展(社会发展)资助项目(CS202005); 常州大学自然科学基金资助项目(ZMF21020017)。
作者简介: 张艳秋(1990—), 女, 山东青州人, 博士, 讲师。E-mail: zhangyanqiu@cczu.edu.cn
更新日期/Last Update: 1900-01-01