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

In this paper, the physio-chemical characteristics of green synthesised PLA/silver nanoparticles (PLAAgNPs) 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. | Materials Letters 217 (2018) 33–38 Contents lists available at ScienceDirect Materials Letters journal homepage: Green synthesized PLA/silver nanoparticle probe for sensing of hydrogen peroxide in biological samples Shebi Alipilakkotte, Lisa Sreejith ⇑ Soft Material Research Laboratory, Department of Chemistry, National Institute of Technology, Calicut 673601, KL, India a r t i c l e i n f o Article history: Received 13 July 2017 Received in revised form 15 December 2017 Accepted 7 January 2018 Available online 10 January 2018 Keywords: Polylactic acids Nanoparticles Piper nigrum Biological reduction Sensors Hydrogen peroxide a b s t r a c t In this paper, the physio-chemical characteristics of green synthesised PLA/silver nanoparticles (PLAAgNPs) 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 lM) of hydrogen peroxide and finds applicability in biological and environmental analysis. Ó 2018 Elsevier . All rights reserved. 1. Introduction Hydrogen peroxide (H2O2) is known to be a strong oxidant, which has its applicability in many fields. An accurate and highly sensitive detection of hydrogen peroxide (H2O2) is of practical importance in various fields ranging from bioanalysis to environmental protection [1]. There are several reported methods such as .

• Hoá học
• Green synthesized PLA silver nanoparticle probe for sensing
• Green synthesized PLA silver
• Hydrogen peroxide in biological samples
• X ray photo electron spectroscopy
• PLA with silver nanoparticles