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A kind of preparation method of branch-shaped nanomaterial containing copper and non-noble metal

A non-precious metal and nano-material technology, applied in the field of branch-like nano-materials and its preparation, can solve the problems of complex reaction equipment, long reaction time, unfavorable production, etc., and achieve the effect of simple process, simple operation steps and low time cost

Active Publication Date: 2019-03-19
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most methods for synthesizing dendritic metal nanomaterials require the use of high temperature, high pressure, complex reaction equipment or long reaction time, which is not conducive to mass production.

Method used

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  • A kind of preparation method of branch-shaped nanomaterial containing copper and non-noble metal
  • A kind of preparation method of branch-shaped nanomaterial containing copper and non-noble metal
  • A kind of preparation method of branch-shaped nanomaterial containing copper and non-noble metal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] (1) Add soluble starch (potato starch, the same as in the following examples) to 1L of aqueous solution so that its concentration is 2 grams of soluble starch per 100 milliliters of water. Stir in an oil bath with a condensation reflux device and heat up Incubate at 95°C for 15 minutes, cool down to room temperature, and set aside;

[0037] (2) Take 10 mL of the starch solution obtained in step (1), add 19.55 mg (0.082 mmol) of cobalt chloride and 10.15 mg (0.043 mmol) of copper chloride, and ultrasonically (frequency is 40 Hz) at 25 ° C for 5 minutes to make the chloride Cobalt and copper chloride are evenly distributed in the starch solution;

[0038] (3) Add 2.68 mg of sodium borohydride to the solution in step (2) for ultrasonic reaction for two minutes;

[0039] (4) Transfer the solution after the reaction in step (3) to a centrifuge tube, centrifuge at room temperature (10000r / min), wash with water three times, pour off the supernatant, and put the precipitate in...

Embodiment 10

[0047] (1) Add soluble starch to 1L of aqueous solution so that the concentration is 2 grams of soluble starch per 100 ml of water, put it into an oil bath with a condensation reflux device and stir, heat up to 95°C and keep it for 15 minutes, then drop to room temperature, spare;

[0048] (2) Take 10 mL of the starch solution obtained in step (1), add 14.57 mg of nickel chloride and 15.13 mg of copper chloride, and ultrasonically (frequency is 40 Hz) at 25 ° C for 5 minutes to make nickel chloride and copper chloride in the starch solution evenly distributed in

[0049] (3) Add 2.68 mg of sodium borohydride to the solution in step (2) for ultrasonic reaction for two minutes;

[0050] (4) Transfer the solution after the reaction in step (3) to a centrifuge tube, centrifuge at room temperature, wash with water and three times, pour off the supernatant, and freeze in the refrigerator for 1 hour;

[0051] (4) Take the centrifuge tube out of the refrigerator and place it in a va...

Embodiment 19

[0058] (1) 9.975 mg of nickel chloride, 9.975 mg of cobalt chloride and 1.015 mg of copper chloride were added to 10 mL of starch solution, and ultrasonicated for 5 minutes, so that the cobalt chloride and copper chloride were evenly distributed in the starch solution;

[0059] (2) Add 0.0268 gram of sodium borohydride to the solution and react for 2 minutes;

[0060] (3) Transfer the reacted solution to a centrifuge tube, centrifuge, wash with water and alcohol for 3 times, pour off the supernatant, and put it in the refrigerator to freeze for 1 hour;

[0061] (4) Take the centrifuge tube out of the refrigerator and place it in a vacuum freeze-drying machine, wait for the liquid to be drained and take out the sample to obtain a dendritic cobalt-copper nanostructure.

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Abstract

The invention relates to a preparation method of a branch-like nanometer material containing copper and non-noble metals. The method comprises the following steps: adding soluble starch into the aqueous solution, putting it into an oil bath with a condensing reflux device and stirring, adding a copper precursor, then adding a non-precious metal precursor, ultrasonically dispersing, and then adding borohydrogenation Sodium; centrifuged, the precipitate was washed with deionized water, and freeze-dried to obtain branch-like nanomaterials. The invention has cheap and easy-to-obtain raw materials, simple and convenient preparation process, less time-consuming reaction, safe operation, and can synthesize non-precious metal metal dendritic nanomaterials with various compositions. The obtained dendritic metal nanomaterials have regular morphology and uniform size, and will have broad application prospects in the fields of electrochemistry and catalysis.

Description

technical field [0001] The invention relates to the field of catalysis, in particular to a branch-like nanometer material and a preparation method thereof. Background technique [0002] Metal nanomaterials with a branched structure can provide a large specific surface area and increase the active sites of metal particles. The branched structure can also disperse metal particles and prevent metal particles from agglomerating, thereby improving the utilization rate of metal particles. In view of the above advantages, metal nanomaterials with branched structures have many applications in catalysis, electrochemistry, optics and other fields. [0003] In the current reports on branched metal nanomaterials, most of the metal elements are single metals or combinations of non-noble metals and noble metals, and there are relatively few reports on the reaction between non-noble metals to obtain branched structures. The impregnation method is one of the commonly used methods to prepar...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F9/24B82Y40/00B01J23/75B01J23/755B01J23/745B01J23/80B01J23/86B01J37/16
CPCB82Y40/00B01J23/745B01J23/75B01J23/755B01J23/80B01J23/868B01J37/16B22F9/24B22F1/0553B22F1/054B01J35/397B01J35/393B01J35/23
Inventor 杨晓婧桑琬璐李兰兰王晨阳于晓飞赵建玲王西新
Owner HEBEI UNIV OF TECH
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