Ion specific filter membrane/mesoporous silicon composite material, nano sensor, product and application thereof
A composite material and specific technology, applied in the field of ion-specific filter membrane/mesoporous silicon composite material, can solve the problems of narrow fluctuation range, insufficient sensitivity of optical sensor, and achieve controllable conditions, good possibility of clinical transformation, The effect of good biocompatibility
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Embodiment 1
[0053] (1) Synthesis of mesoporous silica nanoparticles: 2 g of cetyltrimethylammonium chloride and 0.07 g of triethanolamine were sequentially dissolved in 20 ml of deionized water, and heated to 95° C. for 1 h under vigorous stirring. Afterwards, 1.5 ml of ethyl orthosilicate was added dropwise, and the stirring reaction was continued for 1 h. Impurities were removed by washing with methanol several times, and the product was collected by centrifugation. The collected product was extracted with 1 wt% sodium chloride methanol solution for 3 hours to wash away the template agent to obtain mesoporous silica nanoparticles.
[0054] The prepared mesoporous silica nanoparticles were characterized by transmission electron microscopy, as shown in the attached figure 1 As shown, the diameter is about 30-50 nm.
[0055] (2) Synthesis of the composite material of potassium ion-specific filter membrane / mesoporous silicon: 3.4g N-benzyl salicylamide and 2.5g anhydrous potassium carbona...
Embodiment 2
[0061] (1) Synthesis of mesoporous silica nanoparticles: 2 g of cetyltrimethylammonium chloride and 0.07 g of triethanolamine were sequentially dissolved in 20 ml of deionized water, and heated to 95° C. for 1 h under vigorous stirring. Afterwards, 1.5 ml of ethyl orthosilicate was added dropwise, and the stirring reaction was continued for 1 h. Impurities were removed by washing with methanol several times, and the product was collected by centrifugation. The collected product was extracted with 1 wt% sodium chloride methanol solution for 3 hours to wash away the template agent to obtain mesoporous silica nanoparticles.
[0062](2) Synthesis of the composite material of potassium ion-specific filter membrane / mesoporous silicon: 3.4g N-benzyl salicylamide and 2.5g anhydrous potassium carbonate were added successively in 25mL anhydrous dimethylformamide and the temperature was raised to 90 ℃, then added 2.9g 1,1,1-tris(p-toluenesulfonyloxy-methyl)ethane and 0.3mL 2-aminotereph...
Embodiment 3
[0066] (1) Synthesis of mesoporous silica nanoparticles: 2 g of cetyltrimethylammonium chloride and 0.07 g of triethanolamine were sequentially dissolved in 20 ml of deionized water, and heated to 95° C. for 1 h under vigorous stirring. Afterwards, 1.5 ml of ethyl orthosilicate was added dropwise, and the stirring reaction was continued for 1 h. Impurities were removed by washing with methanol several times, and the product was collected by centrifugation. The collected product was extracted with 1 wt% sodium chloride methanol solution for 3 hours to wash away the template agent to obtain mesoporous silica nanoparticles.
[0067] (2) Synthesis of the composite material of potassium ion-specific filter membrane / mesoporous silicon: 3.4g N-benzyl salicylamide and 2.5g anhydrous potassium carbonate were added successively in 25mL anhydrous dimethylformamide and the temperature was raised to 90 ℃, then added 2.9g 1,1,1-tris(p-toluenesulfonyloxy-methyl)ethane and 0.3mL 2-aminoterep...
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