Nano copper particle and its preparation method and application
A nano-copper and particle technology, applied in nanotechnology, transportation and packaging, metal processing equipment, etc., can solve the problems of non-uniformity, high production cost, unenvironmental particle size, etc., to achieve stable properties, low equipment requirements, The effect of uniform particle size
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[0023] The example of the present invention provides a preparation method of nano-copper particles.
[0024] Specifically, the preparation method of the nano copper particles at least includes the following steps:
[0025] Mixing cuprous salt or divalent cupric salt, polymer dispersant, red phosphorus and a water-containing solvent to obtain a first mixed material, placing the first mixed material in a reaction vessel for heating and reacting to obtain a surface coating Cuprous phosphide coated with polymeric dispersant;
[0026] Under a reducing atmosphere, the obtained cuprous phosphide is reduced to obtain nanometer copper particles.
[0027] The preparation method of the above nano-copper particles will be explained in detail below.
[0028] As one of the raw materials for the synthesis of nano-copper particles, it may be cuprous salt or divalent copper salt. Wherein, the cuprous salt is any one of cuprous chloride, cuprous bromide, cuprous sulfate and cuprous iodide. ...
Embodiment 1
[0041] A preparation method of nano-copper particles, specifically comprising the following steps:
[0042] (1) Weigh 0.3g of red phosphorus, 0.5g of polyvinylpyrrolidone, 0.68g of cuprous chloride, 40mL of ethanol, and 10mL of deionized water;
[0043] (2) After mixing the above-mentioned red phosphorus, polyvinylpyrrolidone, cuprous chloride, ethanol, and deionized water, ultrasonically disperse to obtain the first mixed material, and then place the first mixed material in a polytetrafluoroethylene liner React in a reaction kettle at 180°C for 24h, centrifuge and wash with ethanol and deionized water, and dry in vacuum at 80°C for 24h.
[0044] (3) Place the dried sample in a tube furnace, feed hydrogen gas (hydrogen flow rate: 30 sccm), react at 500° C. for 5 h, and obtain nano-copper particles after cooling.
[0045] Corresponding performance tests were performed on the copper nanoparticles obtained in Example 1. Among them, SEM scanning such as figure 1 shown, from fi...
Embodiment 2
[0049] A preparation method of nano-copper particles, specifically comprising the following steps:
[0050] (1) Weigh 0.3g of red phosphorus, 0.5g of polyvinylpyrrolidone, 0.8g of cuprous chloride, and 80mL of deionized water;
[0051] (2) After mixing the above-mentioned red phosphorus, polyvinylpyrrolidone, cuprous chloride, and deionized water, ultrasonically disperse to obtain the first mixed material, and then place the first mixed material in a polytetrafluoroethylene liner for reaction React in a kettle at 180°C for 24h, centrifuge and wash with ethanol and deionized water, and vacuum dry at 80°C for 24h.
[0052] (3) Place the dried sample in a tube furnace, feed hydrogen gas (hydrogen gas flow rate 20 sccm, argon gas flow rate 80 sccm), react at 500° C. for 3 h, and obtain nano-copper particles after cooling.
[0053] Corresponding performance tests were performed on the cuprous phosphide particles obtained in Example 2.
[0054] Among them, SEM scanning such as F...
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