High-load platinum and nickel ordered intermetallic compound as well as preparation method and use thereof
An intermetallic compound, platinum-nickel technology, applied in the field of preparation of high-load platinum-nickel ordered intermetallic compounds, can solve problems such as poor stability, high price, and reduced catalyst activity, achieve high dispersion, increase activity, reduce The effect of dosage
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Embodiment 1
[0037] The invention provides a high-loaded platinum-nickel ordered intermetallic compound, the preparation process of which is as follows:
[0038](1) Measure 32 mL of 1 mg / mL graphene oxide (GO) aqueous dispersion in a 50 mL beaker, add 5 mg of sodium citrate dihydrate, and ultrasonically dissolve it completely for 10 min, then add 3 mL of acidic multi-walled carbon nanotubes ( MWCNTs) aqueous dispersion (containing 8 mg multi-walled carbon nanotubes).
[0039] (2) 80mg PtCl 4 and 70mg NiCl 2 ·6H 2 Dissolve O to a concentration of 0.5mol L in 10mL -1 In the ethylene glycol solution of sodium hydroxide, add 200mg of sodium glutamate sonication and dissolve in the above-mentioned ethylene glycol solution.
[0040] (3) Slowly stir the ethylene glycol solution prepared in step (2) into the graphene oxide (GO) dispersion prepared in step (1), and ultrasonically stir for 30 min at a temperature of 25°C. Then the above liquid was transferred to a 100mL polytetrafluoroethylene-...
Embodiment 2
[0048] The invention provides a high-loaded platinum-nickel ordered intermetallic compound, the preparation process of which is as follows:
[0049] (1) Measure 40 mL of 1 mg / mL graphene oxide (GO) aqueous dispersion into a 50 mL beaker, add 50 mg of sodium citrate dihydrate, and ultrasonically dissolve it completely for 30 min.
[0050] (2) 60mg PtCl 4 and 48mg NiCl 2 ·6H 2 O dissolved in 8mL to a concentration of 0.5mol L -1 In the ethylene glycol solution of sodium hydroxide, add 150mg of sodium glutamate sonication and dissolve in the above-mentioned ethylene glycol solution.
[0051] (3) Slowly stir the ethylene glycol solution prepared in step (2) into the graphene oxide (GO) dispersion prepared in step (1), and ultrasonically stir for 30 min at a temperature of 30°C. Then the above liquid was transferred to a 100mL polytetrafluoroethylene-lined reactor, and subjected to solvothermal reaction at 180°C for 12 hours to obtain a cylindrical black carbon hydrogel; washed...
Embodiment 3
[0059] The invention provides a high-loaded platinum-nickel ordered intermetallic compound, the preparation process of which is as follows:
[0060] (1) Measure 32 mL of 1 mg / mL graphene oxide (GO) aqueous dispersion in a 50 mL beaker, add 5 mg of sodium citrate dihydrate, and ultrasonically dissolve it completely for 10 min, then add 6 mL of acidic multi-walled carbon nanotubes ( MWCNTs) aqueous dispersion (containing 16 mg multi-walled carbon nanotubes).
[0061] In other embodiments of the present invention, if the mass of graphene oxide (GO) in the graphene oxide (GO) aqueous dispersion is less than that of multi-walled carbon nanotubes (MWCNTs) in the acidic multi-walled carbon nanotubes (MWCNTs) aqueous dispersion If the quality of sodium citrate dihydrate exceeds the quality of graphene oxide (GO) in the aqueous dispersion of graphene oxide (GO), the high-load platinum-nickel ordered intermetallic compound of the present invention cannot be prepared; 5 times the mass s...
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