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Reflectance chemosensor based on bis-thiourea derivative as ionophore for copper(II) ion detection
- Source :
- Microchemical Journal. 153:104460
- Publication Year :
- 2020
- Publisher :
- Elsevier BV, 2020.
-
Abstract
- A reagentless, rapid and facile optical reflectance sensor has been fabricated based on immobilization of novel bis-thiourea (BT) ligand compound, N,N′-(((3,3′-dimethoxy-[1,1′-biphenyl]-4,4′-diyl)bis(azanediyl))bis(carbonothioyl))bis(4-methoxybenzamide) onto acrylic poly(n-butyl acrylate) [poly(nBA)] microspheres for sensitive and selective determination of Cu2+ ion in aqueous solution. Binding study of BT ionophore toward Cu2+ ions was performed via colorimetric detection and UV–Vis titration experiments. The stoichiometric binding ratio and binding constant (Ka) of BT to Cu2+ ion was determined to be 1:2 and 5.2 × 104 M−1, respectively, based upon Job's plot and Benesi–Hildebrand analyses. The optical reflectance chemosensor based on BT derivative element responded exclusively to Cu2+ ion while being almost irresponsive to the other interfering ions, and exhibited a dynamic linear response range from 7.80 × 10−7–1.60 × 10−4 M Cu2+ ion with a limit of detection (LOD) of 6.12 × 10−7 M, and fast response time of
- Subjects :
- Detection limit
Aqueous solution
Chemistry
Ligand
010401 analytical chemistry
Ionophore
02 engineering and technology
021001 nanoscience & nanotechnology
01 natural sciences
Binding constant
0104 chemical sciences
Analytical Chemistry
Ion
chemistry.chemical_compound
Thiourea
Titration
0210 nano-technology
Spectroscopy
Nuclear chemistry
Subjects
Details
- ISSN :
- 0026265X
- Volume :
- 153
- Database :
- OpenAIRE
- Journal :
- Microchemical Journal
- Accession number :
- edsair.doi...........4bc796b8d7da9ee0d8b3592ed3df09e4