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۱Carbon Nanotube\Gold nanoparticles Sensor for Detection of Hydrazine in the Pyrogallol Red Solution
نویسنده(ها): ، ، ، ، ،
اطلاعات انتشار: Analytical & Bioanalytical Electrochemistry، هفتم،شماره۳، Jun ۲۰۱۵، سال
تعداد صفحات: ۱۴
An efficient multi–walled carbon nanotube\gold colloidal nanoparticle paste electrode (MWCNTs\ Au Nps PE) was prepared for detection of hydrazine in the presence of pyrogallol red as a mediator in the homogenous solution. The prepared MWCNTs\ Au Nps PE and multi–walled carbon nanotube paste electrode (MWCNTs PE) were characterized by Raman spectroscopy, scanning electron microscopy and cyclic voltammetry. The MWCNTs\ Au Nps PE exhibited a very large decrease in the over potential (0.3V to 0.0V) and significant enhanced peak current response for detection of hydrazine in the presence of pyrogallol red as a mediator in the Na2CO3 – KCl solution. The mass transfer of hydrazine on the surface of MWCNTs\Au Nps PE was controlled by adsorption process. The proposed method exhibits outstanding sensitivity (2.5 μA\μM) and low detection limit (0.4 μM) at 0.0V. All the results indicated a good potential application of this sensor in the detection of hydrazine. The use of MWCNTs\ Au Nps PE was demonstrated for detection of hydrazine in the drinking water samples.
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