ZnS：Mn/SiO2量子点的表面聚乙烯吡咯烷酮修饰及其应用于海水中铅离子检测

秦俊杰; 曹立新; 柳伟; 高荣杰; 苏革; 曲华; 夏呈辉

doi:10.3788/fgxb20143507.0858

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ZnS：Mn/SiO₂量子点的表面聚乙烯吡咯烷酮修饰及其应用于海水中铅离子检测

发光学应用及交叉前沿 | 更新时间：2020-08-12

- ZnS：Mn/SiO₂量子点的表面聚乙烯吡咯烷酮修饰及其应用于海水中铅离子检测
- ZnS：Mn/SiO₂ Quantum Dots Modified with PVP as Fluorescent Sensor for Pb²⁺ Ions in Sea Water
- 发光学报 2014年35卷第7期页码：858-865
- 作者机构：
  
  中国海洋大学材料科学与工程研究院,山东青岛,266100
- 作者简介：
- 基金信息：
  
  国家自然科学基金（51172218）();青岛市科技发展计划（12-1-4-1-（2）-jch）();中国博士后科学基金（2013M541962）资助项目()
- DOI：10.3788/fgxb20143507.0858
  中图分类号： O657.3
- 收稿日期：2014-04-07，
  
  修回日期：2014-05-09，
  
  纸质出版日期：2014-07-03
- 稿件说明：
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秦俊杰, 曹立新, 柳伟等. ZnS：Mn/SiO2量子点的表面聚乙烯吡咯烷酮修饰及其应用于海水中铅离子检测[J]. 发光学报, 2014,35(7): 858-865

QIN Jun-jie, CAO Li-xin, LIU Wei etc. ZnS：Mn/SiO2 Quantum Dots Modified with PVP as Fluorescent Sensor for Pb2+ Ions in Sea Water[J]. Chinese Journal of Luminescence, 2014,35(7): 858-865
秦俊杰, 曹立新, 柳伟等. ZnS：Mn/SiO2量子点的表面聚乙烯吡咯烷酮修饰及其应用于海水中铅离子检测[J]. 发光学报, 2014,35(7): 858-865 DOI： 10.3788/fgxb20143507.0858.

QIN Jun-jie, CAO Li-xin, LIU Wei etc. ZnS：Mn/SiO2 Quantum Dots Modified with PVP as Fluorescent Sensor for Pb2+ Ions in Sea Water[J]. Chinese Journal of Luminescence, 2014,35(7): 858-865 DOI： 10.3788/fgxb20143507.0858.

摘要

制备了二氧化硅壳层修饰的ZnS：Mn量子点，基于聚乙烯吡咯烷酮（PVP）与二氧化硅表面硅羟基的作用，在纳米复合微粒表面进行了PVP的修饰，得到了在海水中荧光性能及胶体稳定性良好的ZnS：Mn/SiO

/PVP 量子点。在Pb

对所制备纳米微粒具有荧光猝灭效应的基础上，建立了用ZnS：Mn/SiO

/PVP 量子点作为荧光探针检测海水中微量铅离子的新方法。研究表明，量子点浓度为10

-3

mol/L时，海水中离子浓度在10~100 mol/L范围内与ZnS：Mn/SiO

/PVP量子点荧光猝灭强度呈良好的线性关系，相关系数为0.994 6，检出限为810

-7

mol/L。

Abstract

SiO

coated ZnS:Mn quantum dots were synthesized and modified with PVP. The proce dure of modification was based on the effect between amido band of PVP and hydroxyl of SiO

. ZnS: Mn/SiO

/PVP quantum dots had an excellent fluorescence stability and colloid stability in sea water. Based on the fluorescence quenching of Pb

to ZnS:Mn/SiO

/PVP

a novel method for determination of Pb

in sea water was developed. With a concentration of 10

-3

mol/L

the quenched fluorescence intensity of ZnS:Mn/SiO

/PVP is linearly in proportion to the concentration of Pb

in sea water from 10 to 100 mol/L. The correlation coefficient

is 0.994 6

and the detection limit for Pb

in sea water is 810

-7

mol/L.

关键词

Keywords

references

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