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Potentiometric Sensors for Iodide and Bromide Based on Pt(II)-Porphyrin
- Source :
- Sensors, Volume 18, Issue 7, Sensors, Vol 18, Iss 7, p 2297 (2018), Sensors (Basel, Switzerland)
- Publication Year :
- 2018
- Publisher :
- Multidisciplinary Digital Publishing Institute, 2018.
-
Abstract
- Pt(II) 5,10,15,20-tetra(4-methoxy-phenyl)-porphyrin (PtTMeOPP) was used in the construction of new ion-selective sensors. The potentiometric response characteristics (slope and selectivity) of iodide and bromide-selective electrodes based on (PtTMeOPP) metalloporphyrin in o-nitrophenyloctylether (NPOE), dioctylphtalate (DOP) and dioctylsebacate (DOS) plasticized poly(vinyl chloride) membranes are compared. The best results were obtained for the membranes plasticized with DOP and NPOE. The sensors have linear responses with near-Nernstian slopes toward bromide and iodide ions and good selectivity. The membrane plasticized with NPOE was electrochemically characterized using the EIS method to determine its water absorption and the diffusion coefficient into the membrane.
- Subjects :
- Potentiometric titration
Inorganic chemistry
Iodide
02 engineering and technology
Pt-metalloporphyrin
lcsh:Chemical technology
010402 general chemistry
01 natural sciences
Biochemistry
Article
Vinyl chloride
Analytical Chemistry
Ion selective electrode
chemistry.chemical_compound
Bromide
lcsh:TP1-1185
Electrical and Electronic Engineering
Instrumentation
bromide
PVC membrane
chemistry.chemical_classification
ion-selective electrode
021001 nanoscience & nanotechnology
Porphyrin
Atomic and Molecular Physics, and Optics
0104 chemical sciences
Membrane
chemistry
potentiometry
iodide
0210 nano-technology
Selectivity
Subjects
Details
- Language :
- English
- ISSN :
- 14248220
- Database :
- OpenAIRE
- Journal :
- Sensors
- Accession number :
- edsair.doi.dedup.....d7116fc6abfd9f7e9982eb353dd2fc5b
- Full Text :
- https://doi.org/10.3390/s18072297