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Prussian blue/ superactivated carbon composite-modified electrode for detection of <em>p</em>-phenylenediamine<br />

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Title Statement Prussian blue/ superactivated carbon composite-modified electrode for detection of <em>p</em>-phenylenediamine<br />
 
Added Entry - Uncontrolled Name Li, Jin qing
 
Uncontrolled Index Term Electroanalytical chemistry, Electrodes, Modified electrodes, Glassy carbon electrodes, Superactivated carbon,  Cyclic voltammetry, p-Phenylenediamine, Prussian blue
 
Summary, etc. <p>A novel approach for the selective determination of <em>p-</em>phenylenediamine in aqueous solution using Prussian blue (PB)/ superactivated carbon (SAC) composite-modified glassy carbon electrodes is reported. The chemical constitution and microstructure of PB/SAC composites are studied by SEM, BET and IR data. Due to its unique structure and properties originating from Prussian blue in the superactivated carbon frame, PB/SAC composites show high electrocatalytic activity towards the oxidation of <em>p-</em>phenylenediamine. A special chemical reaction and electron transfer process on the surface of PB/SAC composite-modified GC electrode is proposed and evaluated by cyclic voltammetry and AC impedance in the presence of <em>p</em>-phenylenediamine. The current value of differential pulse voltammetry increases linearly with the <em>p-</em>phenylenediamine concentration in the range 2×10<sup>-7</sup>−1×10<sup>-3 </sup>M with a detection limit of 6.47×10<sup>-8</sup> M (<em>S</em>/<em>N</em> = 3). The relative standard deviation of the waste water samples is &lt; 6% and the recovery rate is 97−104%. These results suggest that the modified electrode has high selection for <em>p-</em>phenylenediamine, good repeatability, and operational stability. The modified electrode has been successfully used to analyze the amount of <em>p</em>-phenylenediamine in water samples.</p>
 
Publication, Distribution, Etc. Indian Journal of Chemistry -Section A (IJCA)
2020-10-19 14:04:12
 
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http://op.niscair.res.in/index.php/IJCA/article/view/21053
 
Data Source Entry Indian Journal of Chemistry -Section A (IJCA); ##issue.vol## 57, ##issue.no## 7 (2018): INDIAN JOURNAL OF CHEMISTRY- SECTION A
 
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Nonspecific Relationship Entry http://op.niscair.res.in/index.php/IJCA/article/download/21053/465465578
http://op.niscair.res.in/index.php/IJCA/article/download/21053/465465579
http://op.niscair.res.in/index.php/IJCA/article/download/21053/465465580
 
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