Chitosan Capped Silver Nanoparticles as Colorimetric Sensor for the Determination of Iron(III)
Publish Year: 1396
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:
JR_ANALCH-4-2_006
تاریخ نمایه سازی: 16 بهمن 1401
Abstract:
A selective, simple and low-cost method for the colorimetric determination of Fe۳+ ions based on chitosan capped silver nanoparticles (Chit-AgNPs) was presented. Chitosan is a cationic polyelectrolyte and possesses amino and hydroxy groups which make it widely used as a capping agent for Ag NPs. The synthesized chitosan capped silver nanoparticles with excellent colloidal stability were characterized by UV–Visible spectrometry, transmission electron microscopy, Fourier transform infrared, X-ray diffraction. Chit-AgNPs exhibit a strong surface plasmon resonance band which disappears in the presence of increasing concentrations of Fe۳+ ions. This system showed a visually detectable color change from brownish-yellow to colorless for the selective determination of Fe۳+. The method can be applied for the determination of Fe۳+ ions in the concentration range of ۱.۰×۱۰-۶ to ۵.۰×۱۰-۴ M. The detection limit was determined from three times the standard deviation of the blank signal (۳σ/slope) as ۵.۳ × ۱۰−۷ M. The developed method was successfully applied for the determination of Fe۳+in real samples
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Authors
Javad Tashkhourian
Department of Chemistry, Faculty of Sciences, Shiraz University, Shiraz, ۷۱۴۵۴, Iran
Omid Sheydaei
Department of Chemistry, Faculty of Sciences, Shiraz University, Shiraz, ۷۱۴۵۴, Iran
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