Electocatalytic Oxidation of Hydroxylamine at an Imidazole Derivative-TiO_2 Nanoparticle Carbon Sensor: Determination of Hydroxylamine and Phenol as Pollutant Agents

Here, the electrochemical carbon sensor modified with titanium oxide (tio_2) 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 tio_2 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 3_sb/m. also chit-tio_2-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-tio_2-cpe was used in water samples, successfully.