Functionalized silver nanoparticles as chemosensor for pH, He2+ and Fe3+ in aqueous medium

被引：110

作者：

Bothra, Shilpa ^{[1
]}

Solanki, Jignasa N. ^{[2
]}

Sahoo, Suban K. ^{[1
]}

机构：

[1] SV Natl Inst Technol SVNIT, Dept Appl Chem, Surat 395007, India

[2] SV Natl Inst Technol SVNIT, Dept Chem Engn, Surat 395007, India

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 2013年 / 188卷

关键词：

Capped AgNPs; Colorimetric; Spectrophotometric; pH; Hg2+; Fe3+; ENHANCED RAMAN-SCATTERING; SURFACE-PLASMON RESONANCE; COLORIMETRIC DETECTION; MERCURY; GOLD; HG(II); MECHANISMS; SENSORS; ACID; VIEW;

D O I：

10.1016/j.snb.2013.07.111

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A novel p-phenylenediamine (p-PDA) functionalized silver nanoparticles (AgNPs) was applied for the detection of metal ions in aqueous medium. This system showed a visually detectable color change from brownish-yellow to colorless for the selective detection of highly toxic Hg2+. However, the surface plasmon resonance (SPR) absorption band of AgNPs at 411 nm was disappeared with the addition of both Hg2+ and Fe3+ ions due to the aggregation of nanoparticles. Also, this system showed excellent selectivity for Hg2+ and Fe3+ ions over other interfering metal ions including Cu2+, Ni2+, Co2+, Pb2+, Cd2+, Ba2+, Mn2+, Mg2+, Fe2+, Al-3+ and Zn2+. The developed system is simple and sensitive to detect Hg2+ and Fe3+ ions with a detection limit down to 0.80 mu M and 1.29 mu M, respectively. Furthermore, this system can also be used as a colorimetric sensor for the detection of low pH. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：937 / 943

页数：7

共 47 条

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