Cu-Ag bimetallic nano material, preparation method and application thereof

A bimetallic nano- and nano-sol technology, applied in the field of nano-materials, can solve the problems of large particle size and long time of copper-silver nano-materials, and achieve the effects of short reaction time, uniform distribution and good dispersion

Inactive Publication Date: 2017-02-15
WUHAN UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But the particle diameter of the copper-silver nanomaterial that this method prepares is also bigger (particle diameter is 40-60nm), and the time that preparation process needs is longer

Method used

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  • Cu-Ag bimetallic nano material, preparation method and application thereof
  • Cu-Ag bimetallic nano material, preparation method and application thereof
  • Cu-Ag bimetallic nano material, preparation method and application thereof

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[0031] An embodiment of the present invention provides a method for preparing a Cu-Ag bimetallic nanomaterial, comprising the following steps:

[0032] Prepare the polyol solution of the silver nitrate of 5-20mmol / L, the polyol solution of the polyvinylpyrrolidone of 40-100mmol / L and the polyol solution of the copper acetate of 5-20mmol / L; Wherein polyol comprises ethylene glycol, propane One of triol and n-heptanol.

[0033] The polyol solution of silver nitrate and the polyol solution of polyvinylpyrrolidone are mixed and stirred and dissolved in a volume ratio of 1:1-1.2 to obtain the first solution, and the first solution is subjected to microwave heating treatment to obtain Ag nano-sol, and the microwave power is 520-650W, processing time is 90-120s;

[0034] The n-heptanol solution of copper acetate and the Ag nano sol are mixed and stirred and dissolved in a volume ratio of 1:1-1.2 to obtain a second solution, and the molar ratio of Cu and Ag in the second solution is ...

Embodiment 1

[0041] Embodiment 1 of the present invention provides a kind of Cu-Ag bimetallic nano material, and its preparation method is as follows:

[0042]S101, prepare the n-heptanol solution of silver nitrate of 10mmol / L, the n-heptanol solution of 60mmol / L polyvinylpyrrolidone, the n-heptanol solution of 20mmol / L copper acetate;

[0043] S102. Mix the n-heptanol solution of silver nitrate with the n-heptanol solution of polyvinylpyrrolidone at a volume ratio of 1:1.2, stir magnetically for 120s until completely dissolved, and obtain the first solution. Transfer the first solution to a microwave oven In the polyethylene container tank in the chemical reactor, adjust the microwave power to 550W, heat for 110s, and obtain Ag nano-sol after cooling to room temperature;

[0044] S103, mix the n-heptanol solution of copper acetate and the Ag nano sol in a volume ratio of 1:1.1, stir magnetically for 90s until completely dissolved, and obtain a second solution, the molar ratio of Cu and Ag...

Embodiment 2

[0047] Embodiment 2 of the present invention provides a kind of Cu-Ag double metal nano material, and its preparation method is as follows:

[0048] S201, prepare the ethylene glycol solution of 10mmol / L silver nitrate, the ethylene glycol solution of 75mmol / L polyvinylpyrrolidone, the ethylene glycol solution of 10mmol / L copper acetate;

[0049] S202. Mix the ethylene glycol solution of silver nitrate with the ethylene glycol solution of polyvinylpyrrolidone in a volume ratio of 1:1, stir magnetically for 90 seconds until completely dissolved, and obtain the first solution. Transfer the first solution to a microwave oven In the polyethylene container tank in the chemical reactor, adjust the microwave power to 600W, heat for 105s, and obtain Ag nano-sol after cooling to room temperature;

[0050] S203, mix the ethylene glycol solution of copper acetate and the Ag nano sol in a volume ratio of 1:1.1, and stir magnetically for 100s until completely dissolved to obtain a second s...

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Abstract

The invention provides a Cu-Ag bimetallic nano material, a preparation method and application thereof, and belongs to the field of nano materials. The preparation method comprises the steps of preparing a polyatomic alcohol solution of silver nitrate, a polyatomic alcohol solution of polyvinylpyrrolidone and a polyatomic alcohol solution of copper acetate; mixing the polyatomic alcohol solution of silver nitrate with the polyatomic alcohol solution of polyvinylpyrrolidone according to the fact that the volume ratio of the polyatomic alcohol solution of silver nitrate to the polyatomic alcohol solution of polyvinylpyrrolidone is 1 to (1 to 1.2), and carrying out microwave treatment to obtain an Ag nano solution; mixing an n-heptanol solution of copper acetate with the Ag nano solution according to the volume ratio of the n-heptanol solution of copper acetate to the Ag nano solution is 1 to (1 to 1.2), and carrying out microwave treatment to obtain Cu-Ag nano sol suspension; and carrying out centrifugal cleaning on the Cu-Ag nano sol suspension, and removing supernate to obtain the Cu-Ag bimetallic nano material. The preparation method of the Cu-Ag bimetallic nano material provided by the invention is simple and reliable to use and environment-friendly in technology. The invention further discloses the Cu-Ag bimetallic nano material prepared through the method and application of the Cu-Ag bimetallic nano material as an antibacterial agent.

Description

technical field [0001] The invention relates to the field of nanomaterials, in particular to a Cu-Ag bimetallic nanomaterial, its preparation method and application. Background technique [0002] Bimetallic nanomaterials are bimetallic composite materials with multiphase structure synthesized by two different kinds of compatible materials by physical and chemical methods. After long-term research, people have synthesized bimetallic nanomaterials with structures such as core-shell, hollow, polyhedron, and crown-pearl. Compared with single-metal nanomaterials, bimetallic nanomaterials have the characteristics of small size and large specific surface area. It has unique physical and chemical properties, and has excellent photoelectric and biochemical properties. For example, the catalytic activity of Au-Pd nanomaterials with a crown-pearl structure is higher than that of Au, Pd single metal nanomaterials and Au-Pd alloy nanomaterials. It is foreseeable that bimetallic nanomate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/24B22F1/00A01N59/20B82Y40/00A01P1/00
CPCA01N59/20B82Y40/00B22F9/24B22F1/0553B22F1/054
Inventor 宋述鹏李培义周和荣吴润张远卓万天
Owner WUHAN UNIV OF SCI & TECH
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