Fishbone-shaped core-shell structure nanometer nickel-copper alloy powder and preparation method thereof
A core-shell structure and nano-nickel technology is used in the preparation of nano-nickel-copper alloy powder, fishbone core-shell structure nano-nickel-copper alloy powder, and nano-nickel-copper alloy powder, which can solve the problem of high reaction temperature and reaction time. Complex process, inconvenient operation and other problems, to achieve the effect of low reaction temperature, simple preparation process and easy operation
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Embodiment 1
[0043] Nano-nickel-copper alloy powder with fishbone core-shell structure uses nickel chloride and copper chloride as metal salts. In an alkaline environment, nickel and copper ions are first complexed with ethylenediamine to form a complex, and then It can be obtained by reduction of sodium borohydride. The reduction reaction temperature is 90°C and the time is 15 hours.
[0044] Concrete preparation steps are as follows:
[0045] 1) Add nickel chloride, copper chloride, and NaOH into water, stir at room temperature for 20 minutes and mix well to obtain solution A;
[0046] The concentration of nickel chloride and copper chloride in solution A is 0.017mol / L, and the concentration of NaOH is 2mol / L;
[0047] 2) Add ethylenediamine into solution A according to the volume ratio of 1:0.1, stir at room temperature for 25 minutes and mix well to obtain solution B;
[0048]3) adding sodium borohydride into water, stirring at room temperature for 15 minutes and mixing to obtain a r...
Embodiment 2
[0053] Nano-nickel-copper alloy powder with fishbone-like core-shell structure, nickel sulfate and copper sulfate are used as metal salts. In an alkaline environment, nickel and copper ions are first complexed with ethylenediamine to form a complex, and then hydroborated It can be obtained by reduction of potassium. The reduction reaction temperature is 90°C and the time is 15 hours.
[0054] Concrete preparation steps are as follows:
[0055] 1) Add nickel sulfate, copper sulfate, and NaOH into water, stir at room temperature for 20 minutes and mix well to obtain solution A;
[0056] The concentration of nickel sulfate and copper sulfate in solution A is 0.033mol / L, and the concentration of NaOH is 4mol / L;
[0057] 2) Add ethylenediamine into solution A according to the volume ratio of 1:0.2, stir at room temperature for 25 minutes and mix well to obtain solution B;
[0058] 3) Potassium borohydride is added to water, stirred at room temperature for 15 minutes and mixed to ...
Embodiment 3
[0062] Nano-nickel-copper alloy powder with fishbone-like core-shell structure, nickel nitrate and copper sulfate are used as metal salts. In an alkaline environment, nickel and copper ions are first complexed with ethylenediamine to form a complex, and then hydroborated It can be obtained by reduction of potassium. The reduction reaction temperature is 90°C and the time is 15 hours.
[0063] Concrete preparation steps are as follows:
[0064] 1) Add nickel nitrate, copper sulfate, and NaOH into water, stir at room temperature for 20 minutes and mix well to obtain solution A;
[0065] The concentration of nickel nitrate and copper sulfate in solution A is 0.05mol / L, and the concentration of NaOH is 6mol / L;
[0066] 2) Add ethylenediamine into solution A according to the volume ratio of 1:0.3, stir at room temperature for 25 minutes and mix well to obtain solution B;
[0067] 3) Potassium borohydride is added to water, stirred at room temperature for 15 minutes and mixed to o...
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