Hollow iron-doped cobalt and nickel oxide-coated nitrogen-doped carbon nanocomposite material and preparation
A nanocomposite material, nitrogen-doped carbon technology, applied in chemical instruments and methods, chemical/physical processes, physical/chemical process catalysts, etc., can solve the problem of less transition metal elements doped with metal oxides, and achieve electrical conductivity Good, large specific surface area, enhanced catalytic performance
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Embodiment 1
[0046] A nitrogen-doped carbon nanocomposite material coated with hollow iron-doped cobalt-nickel oxide, comprising a hollow nitrogen-doped carbon material and iron-doped cobalt-nickel oxide coated outside the hollow nitrogen-doped carbon material. Such as figure 1As shown, the preparation method of the nitrogen-doped carbon nanocomposite coated with hollow iron-doped cobalt-nickel oxide is as follows:
[0047] Step 1: Synthesis of hollow nitrogen-doped carbon:
[0048] Disperse the ZIF-67 powder in 100 mL of water, and ultrasonically treat it for 20 min to obtain a uniform dispersion with a ZIF-67 concentration of 1 mg / mL. Then 20 μL of aniline (Sigma-Aldrich) monomer was added into the above dispersion liquid to make it uniformly dispersed. Subsequently, 0.95 g of ammonium persulfate (Sinopharm Chemical Reagent Co., Ltd.) was dissolved in 30 mL of deionized water, and after ultrasonic treatment for 10 min, it was added to the above dispersion liquid and stirred for 12 h. ...
Embodiment 2
[0052] A nitrogen-doped carbon nanocomposite material coated with hollow iron-doped cobalt-nickel oxide, the preparation method of which is:
[0053] Step 1: Synthesis of hollow nitrogen-doped carbon:
[0054] Disperse the ZIF-67 powder in 100 mL of water, and ultrasonically treat it for 20 min to obtain a uniform dispersion with a ZIF-67 concentration of 1 mg / mL. Then 20 μL of aniline (Sigma-Aldrich) monomer was added into the above dispersion liquid to make it uniformly dispersed. Subsequently, 0.95 g of ammonium persulfate (Sinopharm Chemical Reagent Co., Ltd.) was dissolved in 30 mL of deionized water, and after ultrasonic treatment for 10 min, it was added to the above dispersion liquid and stirred for 12 h. The obtained precipitate was centrifuged, washed three times with deionized water, and dried at 60°C for 12 hours to obtain the ZIF-67@polyaniline composite material. The powder of the ZIF-67@polyaniline composite material was immersed in a 1mol / L hydrochloric acid ...
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