[1]候林丽,张莎莎,毛 艳,等.基于Lys-AuNPs@ZIF-8纳米复合材料比率荧光检测Hg2+[J].江西师范大学学报(自然科学版),2020,(01):63-70.[doi:10.16357/j.cnki.issn1000-5862.2020.01.11]
 HOU Linli,ZHANG Shasha,MAO Yan,et al.The Ratiometric Fluorescent Detection of Hg2+ Based on Lys-AuNPs@ZIF-8 Nanocomposites[J].Journal of Jiangxi Normal University:Natural Science Edition,2020,(01):63-70.[doi:10.16357/j.cnki.issn1000-5862.2020.01.11]
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基于Lys-AuNPs@ZIF-8纳米复合材料比率荧光检测Hg2+()
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《江西师范大学学报》(自然科学版)[ISSN:1006-6977/CN:61-1281/TN]

卷:
期数:
2020年01期
页码:
63-70
栏目:
化学与生命科学
出版日期:
2020-02-10

文章信息/Info

Title:
The Ratiometric Fluorescent Detection of Hg2+ Based on Lys-AuNPs@ZIF-8 Nanocomposites
文章编号:
1000-5862(2020)01-0063-08
作者:
候林丽12张莎莎1毛 艳2汪 莉1*
1.江西师范大学化学化工学院,江西 南昌 330022; 2.江西省吉安市水文局,江西 吉安 343100
Author(s):
HOU Linli12ZHANG Shasha1MAO Yan2WANG Li1*
1.College of Chemistry and Chemical Engineering,Jiangxi Normal University,Nanchang Jiangxi 330022,China; 2.Jiangxi Ji'an Hydrology Bureau,Ji'an Jiangxi 343100,China
关键词:
Lys-AuNPs@ZIF-8 比率荧光传感器 Hg2+
Keywords:
Lys-AuNPs@ZIF-8 ratio fluorescence sensor Hg2+
分类号:
O 657.3
DOI:
10.16357/j.cnki.issn1000-5862.2020.01.11
文献标志码:
A
摘要:
采用一锅法合成了包裹溶菌酶作配体的金纳米颗粒(Lys-AuNPs)的ZIF-8(Lys-AuNPs@ZIF-8)纳米复合材料,用于水溶液中Hg2+的检测.通过傅里叶红外光谱(FT-IR)、扫描电子显微镜(SEM)、透射电子显微镜(TEM)、粉末X-射线衍射(XRD)、氮气吸脱附等技术对其结构进行表征.该纳米复合材料粒径大小为300~500 nm,具有良好的水溶性、分散性及荧光稳定性.加入Hg2+后,AuNPs在640 nm处的荧光发射峰荧光强度减弱,而Lys在4
Abstract:
In this work,Lys-AuNPs@ZIF-8 Nanocomposites that lysozyme takes as ligand is synthesized by one-pot method,which is used to detect Hg2+ in aqueous solution.The Lys-AuNPs@ZIF-8 is investigated by FT-IR,SEM,TEM,XRD and N2 adsorption/desorption analysis,etc.The experimental results show that the nanocomposite has a particle size with the diameters of 300~500 nm,and has good water solubility,dispersibility and fluorescence stability.After the addition of Hg2+,the fluorescence intensity of AuNPs emission peak at 640 nm is weakened,while the fluorescence intensity of Lys emission peak at 430 nm is almost unchanged.Therefore,Lys-AuNPs@ZIF-8 can be used as a ratiometric fluorescence sensor for detecting Hg2+.The F640 nm/F430 nm ratio has a good linear relationship with the Hg2+ concentration in the range from 24 to 450 nmol?L-1.The low detection limit based on a 3d/slope is 7.5 nmol?L-1.

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备注/Memo

备注/Memo:
收稿日期:2019-04-25
基金项目:国家自然科学基金(21465015),江西省水文局青年科技创新基金(SWJJ-KT201805)和水利部鄱阳湖水资源水环境研究中心开放基金(ZXKT201707)资助项目.
通信作者:汪 莉(1975-),女,江西南昌人,教授,博士,博士生导师,主要从事生物纳米传感分析研究.E-mail:lwanggroup@aliyun.com
更新日期/Last Update: 2020-02-10