Direct Visualization of Lead Corona and Its Nanomolar Colorimetric Detection Using Anisotropic Gold Nanoparticles

被引：27
作者：
Dwivedi, Charu [1 ]
Chaudhary, Abhishek [1 ]
Gupta, Abhishek [1 ]
Nandi, Chayan K. [1 ]
机构：
[1] Indian Inst Technol Mandi, Sch Basic Sci, Mandi 175001, India
来源：
ACS APPLIED MATERIALS & INTERFACES | 2015年 / 7卷 / 09期
关键词：
anisotropy; gold nanoparticles; lead ions; colorimetric assay; corona formation; METAL NANOPARTICLES; BIOSENSOR; EXPOSURE;
D O I：
10.1021/am507495j
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The study presents dithiothreitol (DTT) functionalized anisotropic gold nanoparticles (GNP) based colorimetric sensor for detection of toxic lead ions in water. Our results demonstrate the selectivity and sensitivity of the developed sensor over various heavy metal ions with detection limit of similar to 9 nM. The mechanism of sensing is explained on the basis of unique corona formation around the DTT functionalized anisotropic GNP.
引用
收藏
页码：5039 / 5044
页数：6
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