| Autor: |
Hosseini Aliabadi, Maryam, Esmaeili, Naser, Samari Jahromi, Hamideh |
| Předmět: |
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| Zdroj: |
Applied Nanoscience; Feb2020, Vol. 10 Issue 2, p597-609, 13p |
| Abstrakt: |
A composite electrochemical sensor was developed for phenol detection. The composite electrode contains cetyl trimethyl ammonium bromide (CTAB) and zincon, which is made of electro-polymerization with cyclic voltammetry. The potential and current intensity of oxidation peaks of zincon are changed by adding CTAB to the monomer. The changes are attributed to the formation of ion pairs that reduce electronic effects of the sulfonate group. Ion pair forming between zincon and CTAB was approved by FTIR and Raman spectroscopy. The scanning electron microscopy of electrodes shows formation of the polymer on the surface. The comparison of the electrochemical behavior shows that the composite electrode is more sensitive than the poly-zincon electrode. The performance improvement could be attributed to better absorbability of the composite electrode due to the presence of CTAB molecule in the polymer structure and the nanostructure of it. The composite sensor has a linear relation to the current intensity of oxidation peak and phenol concentration from 0 to 30 ppm with the correlation coefficient of 0.992. The detection limit was calculated as 214 ppb (S/N = 3). The effect of temperature on sensor performance is investigated at 15–45 °C. The sensor has an acceptable temperature tolerance in this range. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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