A Method for Assembling Gold Nanoparticles into SERS Active Substrates Using Electrospun Polymer Nanofibrous Membranes
A nanofiber membrane and gold nanoparticle technology, applied in Raman scattering, material excitation analysis, etc., can solve problems such as complicated steps, difficult large-scale routine detection, and limited practical applications, achieving high detection sensitivity, low cost, Good reproducibility and stability of the effect
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[0021] ①. According to the method in the literature (Su, Z.; Li, J.; Li, Q.; Ni, T.; Wei, G. Carbon2012, 50, 5606.) to prepare polycaprolactone nanofiber membrane: first Dissolve polycaprolactone in a 40:60 volume ratio of ethanol-water mixed solution, and then inject this solution into a 10mL plastic syringe equipped with a 20 blunt needle tip, and use 0.1 to 0.3mL in the process of electrospinning h -1 Spray at a high speed. Multilayer biaxially oriented nanofibrous membranes were fabricated by alternating electrospinning at 0° and 90° directions. The first layer of nanofibers was electrospun onto the aluminum foil attached to the collector, after which the aluminum foil was rotated 90°, and the second layer was electrospun on the first layer, and the spraying time of each layer was 10 minutes. Repeat the above procedure until the desired polycaprolactone nanofiber membrane is obtained.
[0022] ②, Hydrophilic modification of the surface of polycaprolactone nanofiber memb...
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