Method for preparing zero-dimension and one-dimension composite material with copper nanowires loaded with silver nanoparticles
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A technology of silver nanoparticles and copper nanowires, applied in the fields of nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve the problems of insufficient exposure of the effective catalytic surface and the increase in the amount of precious metal silver, and achieve savings The effect of drugs, good morphology and large effective surface area
Active Publication Date: 2017-06-13
HANGZHOU INST OF ADVANCED MATERIAL BEIJING UNIV OF CHEM TECH
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This results in an increased amount of precious metal silver and insufficient exposure of the effective catalytic surface
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Embodiment 1
[0032] A method for preparing a zero-dimensional one-dimensional composite material of copper nanowires loaded with silver nanoparticles, comprising the steps of:
[0033] 1) Ultrasonic dispersion of 16 mg of copper nanowires in 6.4 ml of n-hexane to obtain mixed solution A;
[0034] 2) Dissolve 42.47mg of silver nitrate in 8ml of oleylamine under appropriate heating and stirring conditions and then lower it to room temperature to obtain solution B;
[0035] 3) Add the mixed solution A to the solution B at normal temperature, start nitrogen protection, stir for 6 hours, and obtain the mixed solution C;;
[0036] 4) Continue to raise the temperature of the mixed solution C to 80°C, maintain it for 2h, then bring it to room temperature, end the nitrogen protection, then centrifuge the mixed solution C, pour the supernatant liquid, wash the bottom product with n-hexane at least three times, and dry it in vacuum at room temperature, that is A zero-dimensional and one-dimensional ...
Embodiment 2
[0041] A method for preparing a zero-dimensional one-dimensional composite material of copper nanowires loaded with silver nanoparticles, comprising the steps of:
[0042] 1) Ultrasonic dispersion of 16 mg of copper nanowires in 6.4 ml of n-hexane to obtain mixed solution A;
[0043] 2) Dissolve 10.61mg of silver nitrate in 8ml of oleylamine under appropriate heating and stirring conditions and then lower it to room temperature to obtain solution B;
[0044]3) Add the mixed solution A to the solution B at normal temperature, start nitrogen protection, stir for 4 hours, and obtain the mixed solution C;;
[0045] 4) Continue to raise the temperature of the mixed solution C to 80°C, maintain it for 2h, then bring it to room temperature, end the nitrogen protection, then centrifuge the mixed solution C, pour the supernatant liquid, wash the bottom product with n-hexane at least three times, and dry it in vacuum at room temperature, that is A zero-dimensional and one-dimensional c...
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Abstract
The invention discloses a method for preparing a zero-dimension and one-dimension composite material with copper nanowires loaded with silver nanoparticles, and relates to the field of metal nanomaterial preparation. The method includes the following steps that the copper nanowires are subjected to ultrasonic dispersion into organic solvent H so that mixed liquor A can be obtained; a silver source is dissolved into organic solvent O to obtain a solution B; the mixed liquor A is added into the solution B at a normal temperature, ventilation protecting begins, and stirring lasts for 1-20h to obtain mixed liquor C; the mixed liquor C is continuously heated to 50-150 DEG C, and the temperature is kept for 0.5-6h; then the temperature of the mixed liquor C is lowered to an indoor temperature, and ventilation protecting is ended; and afterwards, the mixed liquor C is subjected to centrifugal treatment, products are washed and vacuum-dried, and accordingly the zero-dimension and one-dimension composite material with the copper nanowires loaded with the silver nanoparticles can be obtained. By the adoption of the method, a copper nanowire loaded silver nanoparticle material of the zero-dimension and one-dimension composite structure can be obtained at a normal pressure and at a low temperature, the sizes of the loaded silver nanoparticles are uniform, and the silver nanoparticles are uniformly dispersed onto the surfaces of the copper nanowires so that a heterostructure can be formed.
Description
technical field [0001] The invention relates to the field of metal nanomaterial preparation. More specifically, it relates to a method for preparing a zero-dimensional one-dimensional composite material of copper nanowires loaded with silver nanoparticles. Background technique [0002] Nanomaterials refer to materials that have at least one dimension in the three-dimensional space in the nanoscale range (1-100nm) or are composed of them as basic units. Among them, one-dimensional nanomaterials refer to materials that are nanoscale in two dimensions, and zero-dimensional materials refer to materials that are nanoscale in three dimensions. In recent years, nanomaterials have been widely used in various fields due to their unique optical, electrical, and magnetic properties. The zero-dimensional and one-dimensional composite materials, especially noble metal-non-noble metal heterogeneous composite materials, have two advantages: On the one hand, the noble metal zero-dimension...
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