Carbon nano material with glucose detection performance and preparation method thereof
A technology of carbon nanomaterials and glucose, which is applied in the field of electrochemistry, can solve problems such as easy distortion and aggregation, reduction of catalytic active sites, and limited application, and achieve good compatibility, good glucose detection performance, and high sensitivity.
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Embodiment 1
[0020] Dissolve 150 mg of multi-walled carbon nanotubes (CNTs) in 15 mL of concentrated sulfuric acid, stir moderately for 1 h until the mixture is uniform, then add 3 mL of phosphoric acid with a mass concentration of 85% and continue stirring for 15 min, controlled at half an hour Slowly add 600 mg potassium permanganate into the solution, stir at room temperature (25°C) for 1 h, then heat the mixture to 100°C, and stir slowly for 3 h in a constant temperature water bath to avoid cutting the oxidized carbon tubes into pieces; take out after stirring The mixture was allowed to stand at room temperature, then 100 mL of ice water (5 mL of 20% hydrogen peroxide was added to it) was allowed to stand for 14 h, and the solution was separated; subsequently, the supernatant was discarded, and the lower layer was washed with 0.22 μm water-phase acid and alkali resistant (PTFE) membrane filter, wash twice with 6 mL of hydrochloric acid with a mass concentration of 20% during suction fil...
Embodiment 2
[0022] Dissolve 150 mg of multi-walled carbon nanotubes (CNTs) in 75 mL of concentrated sulfuric acid, stir moderately for 1 h until the mixture is uniform, then add 9.4 mL of phosphoric acid with a mass concentration of 85% and continue stirring for 15 min, controlled within one hour Slowly add 750 mg potassium permanganate, stir at room temperature (25°C) for 1 h, then heat the mixture to 50°C, and stir slowly in a constant temperature water bath for 2 h to avoid cutting the oxidized carbon tubes into pieces; take out the mixed solution after stirring solution and let it stand to room temperature, then add 100 mL of ice water (in which 10 mL of hydrogen peroxide with a mass concentration of 50%) was added to stand for 14 h, and the solution was separated; then, the supernatant was discarded, and the lower layer was washed with 0.22 μm The water phase acid and alkali resistant (PTFE) filter membrane was filtered. During the suction filtration, it was washed twice with 6 mL of ...
Embodiment 3
[0024] Dissolve 150 mg of multi-walled carbon nanotubes (CNTs) in 36 mL of concentrated sulfuric acid, stir moderately for 1 h until the mixture is uniform, then add 4 mL of phosphoric acid with a mass concentration of 85% and continue stirring for 15 min, controlled at half an hour Slowly add 450 mg of potassium permanganate, stir at room temperature (25°C) for 1 h, heat the mixture to 65°C, and stir slowly for 2 h in a constant temperature water bath to avoid cutting the oxidized carbon tubes into pieces; take out after stirring The mixture was allowed to stand at room temperature, and then 100 mL of ice water (5 mL of 30% hydrogen peroxide was added to it) was allowed to stand for 14 h, and the solution was separated; subsequently, the supernatant was discarded, and the lower layer was washed with 0.22 μm water-phase acid and alkali resistant (PTFE) membrane filter, wash twice with 6 mL of hydrochloric acid with a mass concentration of 20% during suction filtration; after th...
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