基于芘功能化核壳型磁性二氧化硅纳米微球的荧光传感器及其对水溶液中汞离子的检测和去除

王岩岩; 唐美瑶; 申赫; 车广波; 苏斌

doi:10.3788/fgxb20183912.1799

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基于芘功能化核壳型磁性二氧化硅纳米微球的荧光传感器及其对水溶液中汞离子的检测和去除

发光学应用及交叉前沿 | 更新时间：2020-08-12

- 基于芘功能化核壳型磁性二氧化硅纳米微球的荧光传感器及其对水溶液中汞离子的检测和去除
- Pyrene-functionalized Core-shell Magnetic Silica Nanospheres for Optical Sensing and Removal of Hg²⁺ in Aqueous Solution
- 发光学报 2018年39卷第12期页码：1799-1806
- 作者机构：
  
  1. 吉林师范大学功能材料物理与化学教育部重点实验室,吉林长春,130103
  2. 吉林师范大学环境友好材料制备与应用教育部重点实验室,吉林长春,130103
  3. 吉林师范大学物理学院,吉林四平,136000
  4. 吉林师范大学化学学院,吉林四平,136000
  5. 吉林师范大学环境科学与工程学院,吉林四平,136000
- 作者简介：
- 基金信息：
  
  国家自然科学基金（21576112，61705078，61704065，61405071）();吉林省科技厅发展计划（20180623042TC，20180520179
- DOI：10.3788/fgxb20183912.1799
  中图分类号： O657.32
- 收稿日期：2018-08-02，
  
  修回日期：2018-10-23，
  
  纸质出版日期：2018-12-05
- 稿件说明：
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王岩岩, 唐美瑶, 申赫等. 基于芘功能化核壳型磁性二氧化硅纳米微球的荧光传感器及其对水溶液中汞离子的检测和去除[J]. 发光学报, 2018,39(12): 1799-1806

WANG Yan-yan, TANG Mei-yao, SHEN He etc. Pyrene-functionalized Core-shell Magnetic Silica Nanospheres for Optical Sensing and Removal of Hg<sup>2+</sup> in Aqueous Solution[J]. Chinese Journal of Luminescence, 2018,39(12): 1799-1806
王岩岩, 唐美瑶, 申赫等. 基于芘功能化核壳型磁性二氧化硅纳米微球的荧光传感器及其对水溶液中汞离子的检测和去除[J]. 发光学报, 2018,39(12): 1799-1806 DOI： 10.3788/fgxb20183912.1799.

WANG Yan-yan, TANG Mei-yao, SHEN He etc. Pyrene-functionalized Core-shell Magnetic Silica Nanospheres for Optical Sensing and Removal of Hg<sup>2+</sup> in Aqueous Solution[J]. Chinese Journal of Luminescence, 2018,39(12): 1799-1806 DOI： 10.3788/fgxb20183912.1799.

摘要

通过溶剂热、溶胶-凝胶和共嫁接技术开发制备了一种基于芘功能化的核壳型磁性二氧化硅纳米微球的可回收汞离子光学传感器。相对于其他竞争金属离子，获得的多功能纳米微球对Hg

具有良好的荧光传感性能和选择性。多功能微球的荧光强度与Hg

浓度之间显示出良好的Stern-Volmer线性关系（

=0.998 3），其检测限为2.310

-8

molL

-1

。该材料对汞离子的荧光响应具有可逆性，利用EDTA溶液处理可实现多次重复使用。此外，芘功能化的磁性二氧化硅纳米微球可以有效地除去水溶液中的Hg

，并且通过施加外部磁场可实现简单快速的分离。上述结果表明，这种功能化核壳型磁性二氧化硅微球在同时检测和去除环境污染物方面具有良好的发展前景与应用潜力。

Abstract

A recyclable mercury(Ⅱ) optical sensor based on pyrene-functionalized core-shell magnetic silica nanosphereswas developed and demonstrated by sol-gel grafting reaction. The obtained multifunctional microspheres displayed excellent fluorescence sensitivity and selectivity towards Hg

over other competing metal ions. A good linearity Stern-Volmer working plot (

=0.998 3) between the fluorescence intensity of multifunctional microspheres and the concentration of Hg

was constructed with a satisfactory detection limit of 2.310

-8

molL

-1

. Their fluorescence response in the presence of Hg

is found to be almost reversible when treated by EDTA solution. Moreover

these pyrene-functionalized magnetic silica nanospheres can efficiently remove Hg

in aqueous solution and easily separated by appling an external magnetic field. These results indicate that functionalized core-shell magnetic silica microspheres are potentially promising materials for simultaneously detecting and removing environmental pollutants.

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Keywords

references

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