A kind of dinotefuran molecularly imprinted material and its application
A technology of molecular imprinting and dinotefuran, which is applied in the analysis of materials, material separation, material inspection products, etc., can solve problems such as patent publications that have not been found, and achieve high purification efficiency
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Embodiment 1
[0036] A dinotefuran molecularly imprinted material, the preparation steps of which are as follows:
[0037] (1) SiO2 2 surface modification of
[0038] SiO activated with hydrochloric acid 2 Particles and 3-(methacryloyloxy)propyltrimethoxysilane are added into a mixed solvent of ethanol-water for modification, and the modification reaction is carried out at 65°C-80°C for 24h-30h; then, the product is washed with absolute ethanol Extract for 24 hours to remove impurities adsorbed on the surface of silica gel to obtain surface-modified silica gel particles;
[0039] Among them, the SiO 2 Particles: 3-(methacryloyloxy)propyltrimethoxysilane: the ratio of ethanol-water mixed solvent g:mL:mL is 2-4:2.5-5:90-130, and the volume ratio of ethanol:water is 1-3: 1-3;
[0040] ⑵Graft polymerization on the surface of silica gel particles
[0041] Add the modified silica gel particles and methyl hydroxyethyl acrylate to water, and pass through the N 2 Add the initiator azobisisobu...
Embodiment 2
[0054] A dinotefuran molecularly imprinted material, the preparation steps of which are as follows:
[0055] (1) SiO 2 surface modification of
[0056] In a three-necked flask equipped with an electric stirrer, a reflux condenser, and a thermometer, the SiO activated with hydrochloric acid was 2 Particles and 3-(methacryloyloxy)propyltrimethoxysilane are added into a mixed solvent of ethanol-water for modification, and the modification reaction is carried out at 65°C-80°C for 24h-30h; then, the product is washed with absolute ethanol Extract for 24 hours to remove impurities adsorbed on the surface of silica gel to obtain surface-modified silica gel particles;
[0057] Among them, the SiO 2 Particles: 3-(methacryloyloxy)propyltrimethoxysilane: the ratio of ethanol-water mixed solvent g:mL:mL is 2-4:2.5-5:90-130, and the volume ratio of ethanol:water is 1-3: 1-3.
[0058] (2) Graft polymerization on the surface of silica gel particles
[0059] Add 2.00g of modified silica...
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