A polycarbazole modified electrode and its detection method for explosive RDX
A technology for modifying electrodes and detection methods, which is applied in the field of electrochemical analysis and detection, can solve the problems of mercury electrode environment pollution, unfavorable popularization and application, etc., and achieve the effects of good repeatability, fast and accurate detection methods, and strong current response
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Embodiment 1
[0020] (1) Grind the glassy carbon electrode on 0.1 and 0.03 μm alumina to smooth, rinse with water and acetone, and set aside.
[0021] (2) Add lithium perchlorate to the aqueous solution to make a 0.1M solution, stir and then add excess carbazole monomer, after ultrasonication for 240 minutes, let it stand still and take the supernatant liquid into the electrolytic cell device, and pass nitrogen for 30 minutes.
[0022] (3) In this solution, a three-electrode system was used, the saturated calomel electrode was used as the reference electrode (20°C), the platinum electrode was used as the counter electrode, and the glassy carbon electrode was used as the working electrode. Using cyclic voltammetry, the adjustment potential window is 0.2~1.5V, and the scanning speed is 200mVs -1 , scan 3 circles. The obtained modified electrode was rinsed repeatedly with ethanol and water, and dried with nitrogen to obtain a polycarbazole modified electrode.
[0023] (4) The application of ...
Embodiment 2
[0026] (1) Grind the glassy carbon electrode on 0.1 and 0.03 μm alumina to smooth, rinse with water and acetone, and set aside.
[0027] (2) Add lithium perchlorate into the aqueous solution to make a 0.01M solution, stir and then add excess carbazole monomer, after ultrasonication for 60 minutes, let it stand still and take the supernatant liquid into the electrolytic cell device, and pass nitrogen for 15 minutes.
[0028] (3) In this solution, a three-electrode system was used, the saturated calomel electrode was used as the reference electrode (20°C), the platinum electrode was used as the counter electrode, and the glassy carbon electrode was used as the working electrode. Using cyclic voltammetry, the adjustment potential window is -0.2~1.3V, and the scanning speed is 50mVs -1 , scan 20 circles. The obtained modified electrode was rinsed repeatedly with ethanol and water, and dried with nitrogen to obtain a polycarbazole modified electrode.
[0029] (4) The application ...
Embodiment 3
[0032] (1) Grind the glassy carbon electrode on 0.1 and 0.03 μm alumina to smooth, rinse with water and acetone, and set aside.
[0033] (2) Add lithium perchlorate to the aqueous solution to make a 0.05M solution, stir and then add excess carbazole monomer, let it stand for 150 minutes after ultrasonication, take the supernatant and add it to the electrolytic cell device, and pass nitrogen for 20 minutes.
[0034] (3) In this solution, a three-electrode system was used, the saturated calomel electrode was used as the reference electrode (20°C), the platinum electrode was used as the counter electrode, and the glassy carbon electrode was used as the working electrode. Using cyclic voltammetry, the adjustment potential window is 0~1.4V, and the scanning speed is 100mVs -1 , scan 15 circles. The obtained modified electrode was rinsed repeatedly with ethanol and water, and dried with nitrogen to obtain a polycarbazole modified electrode.
[0035] (4) The application of polycarb...
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