Molecularly imprinted polymer electrode, preparation method and application of molecularly imprinted polymer electrode in electrochemical analysis of domoic acid
A technology of molecular imprinting and domoic acid, which is applied to the electrochemical variables of materials, material analysis through electromagnetic means, and material analysis. The effect of low requirements on the physical and chemical properties of the target and high-efficiency detection capabilities
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Embodiment 1
[0040] Preparation of Polydopamine-Reduced Graphene Oxide / Polyacrylamide Molecularly Imprinted Polymer Electrode
[0041] (1) Put 60 mg of graphene oxide powder and 30 mg of dopamine hydrochloride in 60 mL of PBS with pH=8 and mix evenly, and stir at room temperature for 12 hours. After the reaction is completed, the mixture is centrifuged, washed, and vacuum-dried to obtain a PDA-rGO composite Material;
[0042] (2) Disperse PDA-rGO in deionized water to form a uniform 0.5 mg / mL suspension, take 5 μL of the suspension and drop-coat it on the SPE electrode, and dry it at room temperature;
[0043] (3) Dissolve acrylamide, methylenebisacrylamide and 1,3,5-pentanetricarboxylic acid in PBS at a concentration ratio of 2:1:1 (concentrations are 4mM, 2mM and 2mM, respectively), Take 5 μL of the solution and drop-coat it on the PDA-rGO modified SPE electrode, and use cyclic voltammetry to scan 20 circles in the potential range of -0.2 to 1.2 V at a scan rate of 100 mV / s to perform ele...
Embodiment 2
[0045] Preparation of Polydopamine-Reduced Graphene Oxide / Polyacrylamide Molecularly Imprinted Polymer Electrode
[0046] Change the acrylamide, methylene bisacrylamide and 1,3,5-pentanetricarboxylic acid in the step (3) of Example 1 to 0.5:1:1 according to the concentration ratio, and prepare the other conditions of the electrode unchanged, and obtain Polydopamine-reduced graphene oxide / polyacrylamide molecularly imprinted polymer.
Embodiment 3
[0048] Preparation of Polydopamine-Reduced Graphene Oxide / Polyacrylamide Molecularly Imprinted Polymer Electrode
[0049] Change the acrylamide, methylenebisacrylamide and 1,3,5-pentanetricarboxylic acid in the step (3) of Example 1 to 1:1:1 according to the concentration ratio, and prepare the other conditions of the electrode unchanged, and obtain Polydopamine-reduced graphene oxide / polyacrylamide molecularly imprinted polymer.
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