Preparation method and application of solid membrane phosphate ion selective electrode based on cobalt/pyrrole/mesoporous carbon
A technology of phosphate ion and mesoporous carbon, which is applied to the electrochemical variables of materials, material analysis through electromagnetic means, and instruments, can solve the problems of narrow detection range, long detection time and high cost of enzyme electrochemical sensors, and achieve The preparation conditions are easy to control, the detection range is wide, and the response speed is fast
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Embodiment 1
[0038] 1) Dissolve 0.9212g of cobalt chloride hexahydrate in 20ml of deionized water, then add 0.135ml of distilled pyrrole monomer, and stir at 300r / min for 1 hour under dark conditions.
[0039] 2) Add 0.28408g of potassium chloride and 0.1491g of sodium sulfate into the above solution as electrolyte, then add 10mg of mesoporous carbon, and continue to stir for 1 hour until the mixture is evenly mixed to obtain a deposition solution.
[0040] 3) Polish and clean the glassy carbon electrode on 0.3 mm and 0.05 mm alumina powder in sequence, and then dry it in an oven at 50° C. for use.
[0041] 4) The electrochemical workstation CHI 660E is used, and the three-electrode system used includes: working electrode (glassy carbon electrode), auxiliary electrode (platinum wire), and reference electrode (calomel electrode). The deposition current used is 0.0005A, and the deposition time is 200s. Cobalt / pyrrole / mesoporous carbon is deposited on the surface of the glassy carbon electrode ...
Embodiment 2
[0044] 1) Dissolve 0.9212g of cobalt chloride hexahydrate in 20ml of deionized water, then add 0.27ml of distilled pyrrole monomer, and stir at 300r / min for 1 hour under dark conditions.
[0045] 2) Add 0.28408g of potassium chloride and 0.1491g of sodium sulfate into the above solution as an electrolyte, then add 10mg of mesoporous carbon, and continue stirring for 1 hour to prepare a deposition solution.
[0046] 3) Polish and clean the glassy carbon electrode on 0.3 mm and 0.05 mm alumina powder in sequence, and then dry it in an oven at 50° C. for use.
[0047] 4) The electrochemical workstation CHI 660E is used, and the three-electrode system used includes: working electrode (glassy carbon electrode), auxiliary electrode (platinum wire), and reference electrode (calomel electrode). The deposition current used is 0.0005A, and the deposition time is 200s. Cobalt / pyrrole / mesoporous carbon is deposited on the surface of the glassy carbon electrode in one step to prepare a pho...
Embodiment 3
[0052] 1) Dissolve 0.9212g of cobalt chloride hexahydrate in 20ml of deionized water, then add 0.54ml of distilled pyrrole monomer, and stir at 300r / min for 1 hour under dark conditions.
[0053] 2) Add 0.28408g of potassium chloride and 0.1491g of sodium sulfate into the above solution as an electrolyte, then add 10mg of mesoporous carbon, and continue stirring for 1 hour to prepare a deposition solution.
[0054] 3) Polish and clean the glassy carbon electrode on 0.3 mm and 0.05 mm alumina powder in sequence, and then dry it in an oven at 50° C. for use.
[0055] 4) The electrochemical workstation CHI 660E was used, and the three-electrode system used included: working electrode (glassy carbon electrode), auxiliary electrode (platinum wire), and reference electrode (calomel electrode). The deposition current used is 0.0005A, and the deposition time is 200s. Cobalt / pyrrole / mesoporous carbon is deposited on the surface of the glassy carbon electrode in one step to prepare a ph...
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