Publication: Chromogenic Detection of Fe 2+ Using Schiff base–naphthalene-2-ol-modified Silver Nanoparticles
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Issued Date
2019
Resource Type
File Type
application/pdf
ISSN
10286276
Other identifier(s)
2-s2.0-85063054301
Rights Holder(s)
มหาวิทยาลัยศรีนครินทรวิโรฒ
Bibliographic Citation
Iranian Journal of Science and Technology, Transaction A: Science. Vol 43, No.2 (2019), p.451-456
Suggested Citation
Samerjai W., Dankhanob L., Chotimai P., Jittangprasert P., Tongraung P. Chromogenic Detection of Fe 2+ Using Schiff base–naphthalene-2-ol-modified Silver Nanoparticles. Iranian Journal of Science and Technology, Transaction A: Science. Vol 43, No.2 (2019), p.451-456. doi:10.1007/s40995-017-0425-4 Retrieved from: https://hdl.handle.net/20.500.14740/5385
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.