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測量應(yīng)用案例-20210901

來源:美國布魯克海文儀器公司   2021年09月23日 16:28  
 

文獻名:Electrochemical detection of nitrate ions via reduction of NO2− and oxidation of NO reactions based on Cu@ TiO2 coreshell/nafion/polyalizarin immobilized electrode

 

 

作者 Nader Aminia, Afshin Malekia, Paria Malekib

aEnvironmental Health Research Center, Research Institute for Health Development, Kurdistan University of Medical Sciences, Sanandaj, Iran

bDepartment of Biomedical Engineering, Hamedan University of Technology, Hamedan, Iran

 

 

摘要:In this paper, we synthesized Cu nanoparticles and Cu@TiO2 core–shell. Regarding the characterization of the Cu nanoparticles and Cu2O@C core–shell, the transmission electron microscopy (TEM), ultraviolet (UV) absorption spectrum, dynamic light scattering (DLS) and zeta potential techniques were employed. The Cu@ TiO2 core–shell with conductive polymers such as Nafion (Nf) and Polyalizarin yellowe R (PAR) immobilizing on glassy carbon electrode (Cu@TiO2-Nf/PAR/GCE). This was used for fabrication of an original electrochemical sensor to measurement nitrate via reduction of NO2 and oxidation of NO reactions. Cyclic voltammetry and impedimetric techniques were employed to confirm the novel sensor construction. Other electrochemical analysis was done by cyclic voltammetry and differential pulse voltammetry methods. The results shed lights on the matter that, Cu@TiO2-Nf/PAR/GCE composite has a great electrocatalytic effect for detecting and determining nitrate ion at −0.8V(Red2) and 0.9V(OX). Linear range, sensitivity and limit of detection were calculated for two area potentials.

 

關(guān)鍵詞:Nitrate;Cu@TiO2 coreshell;Polyalizarin;Nafion;Sensor

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