Green synthesized PLA/silver nanoparticle probe for sensing of hydrogen peroxide in biological samples

被引：25

作者：

Alipilakkotte, Shebi ^{[1
]}

Sreejith, Lisa ^{[1
]}

机构：

[1] Natl Inst Technol, Dept Chem, Soft Mat Res Lab, Calicut 673601, KL, India

来源：

MATERIALS LETTERS | 2018年 / 217卷

关键词：

Polylactic acids; Nanoparticles; Piper nigrum; Biological reduction; Sensors; Hydrogen peroxide; SILVER NANOPARTICLES;

D O I：

10.1016/j.matlet.2018.01.034

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this paper, the physio-chemical characteristics of green synthesised PLA/silver nanoparticles (PLA-AgNPs) system was investigated for H2O2 sensing. The precursor, silver nitrate (AgNO3) was reduced to nanosilver (n-Ag) by Piper nigrum leaves extract in dual phase medium containing PLA (Capping agent). X-ray photo electron spectroscopy (XPS) analysis was carried out to evaluate the interaction of PLA with silver nanoparticles. The morphological analysis by Transmission electron microscopy (TEM) obtained images of spherical silver particles with average size of about 10-20 nm. The H2O2 sensing was confirmed from the colour fading of the solution and vanishing of the characteristic surface plasmon resonance (SPR) absorbance peak of PLA-AgNPs on adding H2O2. The proposed sensor can detect even very low concentrations (5 mu M) of hydrogen peroxide and finds applicability in biological and environmental analysis. (C) 2018 Elsevier B.V. All rights reserved.

引用

页码：33 / 38

页数：6

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