Boron nitride/ Argentum/ carbon nanotube composite material and preparation method and purpose thereof
A composite material and immobilization technology, applied in the field of electrocatalytic materials, can solve problems such as few reports on electrochemical performance, and achieve the effects of high-efficiency electrocatalytic oxygen reduction performance, good electrochemical stability, and good adsorption performance
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[0041] Example 1
[0042] A BN / Ag / CNT composite material. The metal Ag is uniformly attached between the BN sheets and the surface of the sheets. CNT fixes Ag and BN to form a cage structure. Among them, the molar ratio of BN, Ag and CNT is 1:2:1.
[0043] The preparation method includes the following steps:
[0044] (1) Add 30mL deionized water to a 100mL small beaker, and while stirring with a magnetic stirrer, add 1.6987g (0.01mol) AgNO 3 , Stir until it dissolves to obtain a colorless uniform liquid, slowly add concentrated ammonia water until precipitation is generated and then the precipitation is dissolved to obtain a silver ammonia complex ion solution;
[0045] (2) Add 2 mL of ethylene glycol, 0.06 g (0.005 mol) of carbon nanotubes, and 0.124 g (0.005 mol) of hexagonal boron nitride to the silver ammonia complex ion solution, stir for 2 minutes and then ultrasound for 30 minutes to make the mixture uniform;
[0046] (3) At room temperature, slowly add 30ml of 0.1mol / L sodium b...
Example Embodiment
[0050] Example 2
[0051] The preparation method of the BN / Ag / CNT composite material in this example is the same as that in Example 1, except that in step (3), vacuum drying is performed at 90°C for 5 hours. After grinding, under argon atmosphere, Calcination in tube furnace at 850℃ for 1.5h.
Example Embodiment
[0052] Example 3
[0053] The preparation method of the BN / Ag / CNT composite material in this example is the same as that of Example 1, but the difference from Example 1 is that in step (3), vacuum drying is performed at 80°C for 6 hours. After grinding, under argon atmosphere, Calcined in a tube furnace at 800℃ for 3h.
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