Method for assembling gold and silver one-dimensional nano-material by adopting electrostatic spinning technology and application thereof
An electrospinning technology, a technology of nanomaterials, applied in the field of preparation of electrospinning assembled silver one-dimensional nanomaterials, can solve the problems of cumbersome surface treatment steps, and achieve the effects of rapid assembly, good flexibility and convenient portability
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Embodiment 1
[0043]Wash and centrifuge the prepared gold nanorods (length: 78 ± 6nm; width: 19 ± 1nm) with deionized water (8000rpm, 6min), and finally obtain an aqueous solution with a particle concentration of gold nanorods of 4 mg / mL, and add Polyvinyl alcohol, so that the volume concentration of the polymer is 9%, magnetically stirred for 4 hours, and the rotation speed is 200rpm, so that the polymer is completely dissolved, and this solution is used as an electrospinning solution. Transfer the electrospinning solution into a 10 mL syringe for electrospinning. The flow rate was set to 0.08mL / h, the voltage was 9KV, and the distance from the needle to the receiving screen was 10cm. Electrospun films containing gold nanorods can be obtained after electrospinning for 1 h.
[0044] The electrospun membrane can be separated from the receiving screen to obtain a self-supporting film. In addition, electrospinning for 1 hour can obtain an area of more than 30cm 2 The thin film proves that...
Embodiment 2
[0048] Wash and centrifuge the prepared silver nanowires (10-20 μm in length and 30-40 nm in diameter) with ethanol (4000 rpm, 5 min) to finally obtain an ethanol solution with a mass concentration of silver nanowires of 20 mg / mL, and add polyvinylpyrrolidone to the solution , so that the volume concentration of the polymer is 10%, magnetically stirred for 3 hours, and the rotation speed is 300 rpm, so that the polymer is completely dissolved, and this solution is used as an electrospinning solution. Transfer the electrospinning solution into a 10 mL syringe for electrospinning. The flow rate was set to 1.2mL / h, the voltage was 10KV, and the distance from the needle to the receiving screen was 10cm. The electrospun membrane containing silver nanowires can be obtained after electrospinning for 30 min.
[0049] The electrospun membrane can be separated from the receiving screen to obtain a self-supporting film. In addition, electrospinning for 15 minutes can obtain an area of ...
Embodiment 3
[0052] Add 16 mg of silver nanowires (10-20 μm in length and 30-40 nm in diameter) into a certain volume of prepared gold nanorod solution, stir overnight, then centrifuge (10000 rpm, 5 min), wash once with deionized water, and finally get Gold nanorod-silver nanowire assembly, wherein the mass concentration of gold nanorods is 4mg / mL, the mass concentration of silver nanowires is 5mg / mL, polyvinyl alcohol is added to the solution, so that the volume concentration of the polymer is 6%, the magnetic force Stir for 4 hours at a rotational speed of 300 rpm to completely dissolve the polymer, and this solution is used as an electrospinning solution. Transfer the electrospinning solution into a 10 mL syringe for electrospinning. The flow rate was set to 0.1mL / h, the voltage was 7KV, and the distance from the needle to the receiving screen was 12cm. Electrospun membranes containing gold nanorods-silver nanowire assemblies can be obtained after electrospinning for 1 h.
[0053] The...
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