Preparation method of modified electrode for detecting uric acid and detection method
A technology for modifying electrodes and uric acid, which is applied in the field of electrochemical analysis and detection, and can solve problems such as the inability to accurately measure uric acid
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Embodiment 1
[0035] Embodiment 1, a kind of preparation method of the modified electrode that is used to detect uric acid, its steps are:
[0036] (1) Amino-terminated hyperbranched polyamide-amine HBP-NH 2 The preparation of: the raw material diethylenetriamine is put into the reaction vessel, start ice-water bath cooling, under N 2 Under the protection of the atmosphere, add a mixed solution of methyl acrylate and methanol dropwise to the reaction vessel, stop the ice-water bath, and react at room temperature for 4 hours to obtain a light yellow transparent liquid; , heated to 100°C, and continued to react for 2 h to obtain a viscous light yellow liquid. Add acetone to the viscous light yellow liquid, precipitate, filter, separate, and vacuum dry at 35°C to obtain a yellow viscous product HBP-NH 2 ; The volume ratio of raw materials diethylenetriamine, methyl acrylate and methanol is 1:0.4:1.4;
[0037] (2) HBP-NH 2 Preparation of modified carboxylated carbon nanotubes CCNT: Take CNT ...
Embodiment 2
[0041] Embodiment 2, a kind of preparation method of the modified electrode that is used to detect uric acid, its steps are:
[0042] (1) Amino-terminated hyperbranched polyamide-amine HBP-NH 2 The preparation of: the raw material diethylenetriamine is put into the reaction vessel, start ice-water bath cooling, under N 2 Under the protection of the atmosphere, add a mixed solution of methyl acrylate and methanol dropwise to the reaction vessel, stop the ice-water bath, and react at room temperature for 6 hours to obtain a light yellow transparent liquid; , heated to 180 °C, and continued to react for 6 h to obtain a viscous light yellow liquid. Add acetone to the viscous light yellow liquid, precipitate, filter, separate, and vacuum dry at 45 °C to obtain a yellow viscous product HBP-NH 2 ; The volume ratio of raw materials diethylenetriamine, methyl acrylate and methanol is 1: 0.6: 1.8;
[0043] (2) HBP-NH 2 Preparation of modified carboxylated carbon nanotubes CCNT: Take ...
Embodiment 3
[0047] Embodiment 3, a kind of preparation method of the modified electrode that is used to detect uric acid, its steps are:
[0048] (1) Amino-terminated hyperbranched polyamide-amine HBP-NH 2 The preparation of: the raw material diethylenetriamine is put into the reaction vessel, start ice-water bath cooling, under N 2 Under the protection of the atmosphere, add a mixed solution of methyl acrylate and methanol dropwise to the reaction vessel, stop the ice-water bath, and react at room temperature for 5 hours to obtain a light yellow transparent liquid; , heated to 130°C, and continued to react for 4 h to obtain a viscous light yellow liquid. Add acetone to the viscous light yellow liquid, precipitate, filter, separate, and dry in vacuum at 40°C to obtain a yellow viscous product HBP-NH 2 ; The volume ratio of raw materials diethylenetriamine, methyl acrylate and methanol is 1:0.5:1.6;
[0049] (2) HBP-NH 2 Preparation of modified carboxylated carbon nanotubes CCNT: Take t...
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