شماره ركورد كنفرانس :
4226
عنوان مقاله :
Electrochemical measurement of hydrazine at the surface of glass carbon electrode modified with palladium nanoparticles supported on poly (ethylene glycol) - block poly (citric acid)-functionalized Fe3O4 nanoparticles
پديدآورندگان :
Kiani Shahvandi Siamak h.ahmar@yahoo.com University of Zabol , Ahmar Hamid h.ahmar@yahoo.com University of Zabol
كليدواژه :
Magnetic nanoparticles , Palladium nanoparticles , Electrochemical sensor , Hydrazine
عنوان كنفرانس :
سيزدهمين سمينار ملي سالانه الكتروشيمي ايران
چكيده فارسي :
Chemically modified electrode (CME) is the most important part of electrochemical sciences. Due to the unique properties such as, high electrocatalytic activity and high surface area, noble metal nanoparticles have attracted considerable attention for preparation of modified electrodes [1]. Hydrazine widely used in different industries but it has been known to be very harmful for human life and acute exposure can damage the liver, the kidneys, and the central nervous system [1,2]. In this work, the electrocatalytic oxidation of hydrazine has been studied on glassy carbon modified with palladium nanoparticles supported on poly (ethylene glycol)-block-poly(citric acid)-functionalized Fe3O4 magnetic nanoparticles (Pd@PCA-b-PEG-Fe3O4). Under optimized conditions, the proposed sensor showed good catalytic activity for the electrooxidation of hydrazine with a substantial decrease in anodic overpotentials and an increase in anodic peak current. Also, a linear relationship was observed between the voltammetric currents and the concentration of hydrazine within the range of 10–300 μM with the detection limit (S/N = 3) of 3 μM. Finally the proposed sensor was applied to determine hydrazine in water samples.