Green synthesized PLA/silver nanoparticle probe for sensing of hydrogen peroxide in biological samples
| Autor: | Lisa Sreejith, Shebi Alipilakkotte |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Materials science
Mechanical Engineering 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Electron spectroscopy Silver nanoparticle 0104 chemical sciences Absorbance chemistry.chemical_compound Silver nitrate chemistry X-ray photoelectron spectroscopy Mechanics of Materials Transmission electron microscopy General Materials Science Surface plasmon resonance 0210 nano-technology Hydrogen peroxide Nuclear chemistry |
| Zdroj: | Materials Letters. 217:33-38 |
| ISSN: | 0167-577X |
| Popis: | 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 μM) of hydrogen peroxide and finds applicability in biological and environmental analysis. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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