Preparation method, application and detection method of molecular imprinting nanofiber reinforced basement membrane
A nanofiber membrane and nanofiber technology, applied in the field of analysis, can solve the problems of easy aggregation and sedimentation of metal nanoparticles, lower utilization rate of metal particles, and not easy to disperse, etc., achieve good SERS effect, simplify preparation steps, and improve SERS detection effect Effect
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Embodiment 1
[0040] Example 1: Preparation of silver-molecularly imprinted nanofiber reinforced basement membrane
[0041] Weigh 2.5g of polyethersulfone resin and dissolve in 10mL of N,N-dimethylformamide (DMF), stir at 60℃ until it is completely dissolved, add 0.25g of chlorpyrifos (template molecule), stir at room temperature for 12h, then add 0.3g Silver-molecularly imprinted nanofiber electrospinning solution can be obtained by using silver nitrate and sonicating at 40°C for 1 hour.
[0042] Put the configured electrospinning solution into the glass syringe and fix it on the micro syringe pump, choose aluminum foil paper to fix it on the receiving plate, and connect the positive and negative electrodes of the high voltage power supply to the needle of the glass syringe and the receiving plate. Spinning conditions were set as follows: positive voltage 15kV, negative voltage 3.8kV, receiving distance 27cm, spinning solution flow rate of 0.8mL / h, temperature of 25°C, humidity of 60-70%. Put ...
Embodiment 2
[0043] Example 2: Preparation of gold-molecularly imprinted nanofiber reinforced basement membrane
[0044] Weigh 3g of polysulfone (PSF) resin and dissolve in 10mL of N,N-dimethylformamide (DMF), stir at 60℃ until it is completely dissolved, add 0.3g of chlorpyrifos (template molecule), stir at room temperature for 12h, then add 0.25 g gold chloroauric acid, 40 ℃ constant temperature ultrasound for 1 hour to obtain gold-molecularly imprinted nanofiber electrospinning solution.
[0045] Put the configured electrospinning solution into the glass syringe and fix it on the micro-syringe pump, choose aluminum foil paper to fix it on the receiving plate, and connect the positive and negative electrodes of the high-voltage power supply to the needle of the glass syringe and the receiving plate. Spinning conditions are set as follows: positive voltage 14.5kV, negative voltage 3.5kV, receiving distance 25cm, spinning solution flow rate is 0.9mL / h, temperature is 25°C, humidity is 60-70%. ...
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