علی اکبری

Here, the electrochemical carbon sensor modified with titanium oxide (TiO2) nanoparticles and 5-Chloro, 2, 4-dihydroxyphenyl imidazo [4,5-d] ‎‎[1,3] thiazin 7(3H)-one, an imidazole derivative, (CHIT) was fabricated for hydroxylamine (HX) determination. After optimization, some kinetic ‎parameters related to CHIT were obtained. The observations revealed that using CHIT with TiO2 nanoparticle affected in lowering value of ‎oxidation potential and increasing of oxidation peak currents, which provides higher sensitivity. According to these results CHIT-TiO2-CPE ‎sensor possess the linear range (0.5–850 μM) (0.5-40 and 40-850 μM) and a low detection limit (DL) 0.08 μM according to 3sb/m. Also CHIT-‎TiO2-CPE was used for determination of phenol in the range of 90 μM to 800 μM in the presence of various concentration of HX. Also, the CHIT-‎TiO2-CPE was used in water samples, successfully.‎