Please use this identifier to cite or link to this item: http://ir.swu.ac.th/jspui/handle/123456789/12440
Title: Chromogenic Detection of Fe 2+ Using Schiff base–naphthalene-2-ol-modified Silver Nanoparticles
Authors: Samerjai W.
Dankhanob L.
Chotimai P.
Jittangprasert P.
Tongraung P.
Issue Date: 2019
Abstract: Schiff base–naphthalene-2-ol (L) was synthesized by a coupling reaction between 2-hydroxy-1-naphthaldehyde and xylylenediamine in ethanol. The product was characterized by 1 H NMR, 13 C NMR, and mass spectroscopy. L was utilized as reducing and surface functionalizing agents in the synthesis of silver nanoparticles (AgNPs) which were then characterized by high-resolution transmission electron microscopy (HR-TEM) and UV–Visible spectroscopy. The colorimetric sensitivity and metal ion selectivity of L-modified AgNPs with various cations were examined using UV–Vis spectrophotometry. The presence of Fe 2+ induced the aggregation of AgNPs through a cooperative metal–ligand interaction, resulting in a color change from bright yellow to dark yellow with a new band at 372 nm. The interference studies confirmed the high selectivity of Fe 2+ sensing in presence of cations as well as anions by L-modified AgNPs. A linear relationship between the change of absorption at 372 nm and concentration Fe 2+ ranging from 1.30 × 10 −5 to 1.13 × 10 −3  M was observed with a correlation coefficient of 0.9949. The detection limit of the developed method was 1.06 × 10 −6 M. The proposed method has been successfully applied for determination of Fe 2+ content in multivitamin tablet samples. The results were in good agreement with the label claim. © 2017, Shiraz University.
URI: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85063054301&doi=10.1007%2fs40995-017-0425-4&partnerID=40&md5=5082db3c9c8f80a05a1dda3af6254742
http://ir.swu.ac.th/jspui/handle/123456789/12440
ISSN: 10286276
Appears in Collections:Scopus 1983-2021

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