COLORIMETRIC DETECTION OF SILVER IONS IN AQUEOUS SOLUTIONS USING THIOL FUNCTIONALIZED MAGNETIC CORE-SHELL Fe3O4@SiO2.

Autor: Kavitha, S., Babu Christus, A. Anand, Jelastin Kala, S. Mary
Předmět:
Zdroj: Rasayan Journal of Chemistry; Jul-Sep2021, Vol. 14 Issue 3, p1803-1808, 6p
Abstrakt: Thiol functionalized magnetic silica-core shell (MPTES-Fe3O4@SiO2) is used in the colorimetric sensor for the recognition of silver ions. This detected system acts more sensitive and selectively for silver ions in real-time applications. Thiol functionalized core-shell magnetic nanoparticles interact with silver ions to form a metal-thiol complex with the appearance of yellow color in the solution with surface resonance peak (403cm-1) in UV spectra. This colorimetric sensor is very cheap, and facile in the detection of a silver ion with the lower limit of the detection value of 10 nm. Furthermore, we have applied for the monitoring of the real samples of this sensing system with good recovery results. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index