Method for assembling gold and silver one-dimensional nano-material by adopting electrostatic spinning technology and application thereof

An electrospinning technology and nanomaterial technology, which is applied in the field of preparation of electrospinning and assembling gold and silver one-dimensional nanomaterials, can solve the problems of cumbersome surface treatment steps, and achieve the effects of fast assembly, good flexibility and convenient portability

Active Publication Date: 2013-01-02
UNIV OF SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the currently reported methods have their own shortcomings, such as cumbersome surface treatment steps, need for substrate support, and only small-scale assembly can be achieved.

Method used

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  • Method for assembling gold and silver one-dimensional nano-material by adopting electrostatic spinning technology and application thereof
  • Method for assembling gold and silver one-dimensional nano-material by adopting electrostatic spinning technology and application thereof
  • Method for assembling gold and silver one-dimensional nano-material by adopting electrostatic spinning technology and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043]Wash and centrifuge the prepared gold nanorods (length: 78±6nm; width: 19±1nm) with deionized water (8000rpm, 6min) to finally obtain an aqueous solution with a particle concentration of gold nanorods of 4mg / 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 electr...

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 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 300rpm, 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 ​​more th...

Embodiment 3

[0052] Add 16 mg of silver nanowires (10-20 μm in length, 30-40 nm in diameter) into a certain volume of prepared gold nanorod solution, stir overnight, 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 electro...

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Abstract

The invention discloses a method for assembling a gold and silver one-dimensional nano-material by adopting an electrostatic spinning technology. The method comprises the following steps: (a) centrifugating and eluting the gold and silver one-dimensional nano-material, and then dispersing the gold and silver one-dimensional nano-material in a solvent to obtain a solution of the gold and silver one-dimensional nano-material at a certain concentration; (b) adding a polymer at a certain concentration into the solution obtained in the step (a), and completely dissolving the polymer by magnetically stirring to obtain a solution as an electro-spinning solution for use; and (c) electro-spinning the electrospinning solution obtained in the step (b) to obtain an assembled gold and silver-polymer self-supported film. Through the adoption of the method, the gold and silver one-dimensional nano-material can be easily assembled on a large scale and a soft self-supported film with good adjustable and controllable optical performance can be obtained; raw materials are easily obtained; and an electro-spun film is soft and self-supported, has very good uniformity, is convenient to carry, adjustable in optical performance, relatively low in technical requirements and feasible in operation and is relatively applicable to industrial production.

Description

technical field [0001] The invention belongs to the technical field of nanomaterial assembly, and more specifically, relates to a method for preparing and using electrospinning to assemble gold and silver one-dimensional nanomaterials and its application. Background technique [0002] Due to the needs of practical applications, and the aggregates of nanomaterials often exhibit better or novel properties, the effective assembly of monodisperse nanomaterials has become a research hotspot. In particular, gold and silver materials have attracted much attention due to their huge application prospects in catalysis, sensing and other fields. [0003] The British "Royal Society of Chemistry Reviews" (Chemical Society Reviews, 2011, Issue 40, page 656) summarizes the preparation methods and application directions of assembled nanomaterials, and proposes to find a more effective way to assemble nanomaterials on a large scale. method. There are many assembly methods reported so far, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D04H1/413D04H1/728D01D5/00D01F1/10
Inventor 俞书宏张传玲何典
Owner UNIV OF SCI & TECH OF CHINA
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