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Method for preparing palladium and copper alloy nanowires through heliothis armigera nuclear polyhedrosis protein

A polyhedrin and palladium-copper alloy technology is applied in the field of preparation of precious metal nanomaterials, and can solve the problems of high reaction temperature or pressure, high cost of palladium-copper nanomaterials, complex and changeable preparation process, etc., and achieves high biocompatibility , The network appearance is uniform and controllable, and the operation process is fast and simple.

Inactive Publication Date: 2016-08-17
YANSHAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The above-mentioned preparation method is complex in process, requires high reaction temperature or pressure, severe reaction conditions, high requirements on equipment, and complex and changeable preparation process, which makes the cost of preparing palladium copper nanomaterials higher

Method used

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  • Method for preparing palladium and copper alloy nanowires through heliothis armigera nuclear polyhedrosis protein
  • Method for preparing palladium and copper alloy nanowires through heliothis armigera nuclear polyhedrosis protein
  • Method for preparing palladium and copper alloy nanowires through heliothis armigera nuclear polyhedrosis protein

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] (1) Get 0.05mg of cotton bollworm polyhedron protein freeze-dried powder and disperse it with 5mL of cold ultrapure water (the ultrapure water used is the PL5124-PALL model produced by Vivendi Pure Water Systems Co., Ltd., High Wycombe, UK. prepared by an ultrapure water instrument) to obtain a polyhedrin solution with a concentration of 0.01 mg / mL.

[0021] (2) 4mL concentration was 5mM Na 2 PdCl 4 solution and 1 mL of CuCl at a concentration of 5 mM 2 The solution was mixed uniformly to obtain a precursor mixed solution with an atomic ratio of Pd and Cu of 4:1. Take 500 μL of the above precursor mixed solution and put it into a 10 mL centrifuge tube, add 500 μL of the polyhedrin solution obtained in step (1), and mix well.

[0022] (3) into the mixed solution obtained in step (2) into ultra-pure nitrogen for 5min;

[0023] (4) Add the NaBH that the concentration that prepares now is 5mM in the mixed solution of step (3) gained 4 250 μL of the solution was reduced...

Embodiment 2

[0026] (1) Take 0.05 mg of polyhedrin freeze-dried powder of cotton bollworm polyhedrin and disperse it with 10 mL of cold ultrapure water to obtain a polyhedrin solution with a concentration of 0.005 mg / mL.

[0027] (2) 2mL concentration of 10mM Na 2 PdCl 4 solution and 2 mL of CuCl at a concentration of 10 mM 2 The solution was mixed evenly to obtain a precursor mixed solution with an atomic ratio of Pd and Cu of 1:1. Take 300 μL of the above precursor mixed solution and put it into a 10 mL centrifuge tube, add 900 μL of the polyhedrin solution obtained in step (1), and mix well.

[0028] (3) Feed ultrapure nitrogen into the mixed solution obtained in step (2) for 10 min;

[0029] (4) Add the NaBH that concentration is 10mM to mix in the gained mixed solution of step (3) 4 600 μL of the solution was reduced, and the molar ratio of sodium borohydride to the precursor mixed solution was 2:1. The solution changed from light yellow to black rapidly, and palladium-copper allo...

Embodiment 3

[0033] (1) Disperse 0.01 mg of lyophilized polyhedrin protein powder from cotton bollworm with 10 mL of cold ultrapure water to obtain a polyhedrin protein solution with a concentration of 0.001 mg / mL.

[0034] (2) 1mL concentration of 15mM Na 2 PdCl 4 solution and 4 mL of CuCl at a concentration of 15 mM 2 The solution was mixed evenly to obtain a precursor mixed solution with an atomic ratio of Pd and Cu of 1:4. Take 100 μL of the above mixed solution into a 10 mL centrifuge tube, add 500 μL of the polyhedrin solution obtained in step (1), and mix well.

[0035] (3) into the mixed solution obtained in step (2) into ultra-pure nitrogen for 30min;

[0036] (4) Add the NaBH that the concentration that prepares now is 20mM in the mixed solution of step (3) gained 4 300 μL of the solution was used for reduction, the molar ratio of sodium borohydride to the precursor mixed solution was 4:1, the solution changed from light yellow to black rapidly, and palladium-copper alloy nan...

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Abstract

The invention provides a method for preparing palladium and copper alloy nanowires through heliothis armigera nuclear polyhedrosis protein. According to the method, mainly, heliothis armigera nuclear polyhedrosis protein freeze-drying powder is taken, and a polyhedrosis protein solution with the concentration being 0.001-0.01 mg / mL is prepared; a Na2PdCl4 and CuCl2 mixed solution with the ratio of Pd atoms to Cu atoms being 1-4:1-4 is added in the polyhedrosis protein solution, nitrogen is introduced for 5-30 min to remove oxygen in the solution, at room temperature, sodium borohydride is added in the above solution for reduction, the molar ratio of a reduction agent to the precursor mixed solution is 1:2-1:4, and the palladium and copper alloy nanowires with the network structure can be obtained. The method is simple in technology and fast in operating process, the raw materials are low in price, easy to obtain and environment-friendly, industrial production is easily achieved, and the prepared network-shaped palladium and copper alloy nanowires are uniform in shape, stable in structure and good in dispersion performance and can bear overspeed centrifugal treatment and ultrasonic treatment.

Description

technical field [0001] The invention relates to the field of preparation of noble metal nanomaterials, in particular to a method for preparing palladium-copper alloy nanowires. Background technique [0002] The size of nanomaterials is close to the coherence length of electrons, because the strong coherence effect makes its properties change greatly, and it has a large specific surface area, so it has special properties in terms of melting point, optics, magnetism, electricity, heat conduction, catalysis, etc. , is often different from its properties at larger sizes, and its physical and chemical properties are not only different from the properties of microscopic states such as molecules and atoms, but also different from the properties of macroscopic substances. Due to its special application value, precious metal nanomaterials have always been a hot research direction in the field of nanomaterials. However, because precious metals are scarce resources, the price is very ...

Claims

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Application Information

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IPC IPC(8): B22F9/24B82Y40/00
CPCB22F9/24B82Y40/00
Inventor 陈蓉娜孙暮雪庞桂桂高发明
Owner YANSHAN UNIV
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