Method for preparing porous carbon coated transition metal oxide material through CTAB regulation and control and application

[0050] Example 1

[0051] A process for preparing a porous carbon coating methods using CTAB regulatory transition metal oxide material, comprising the steps of:

[0052] (1) Take 1.2114g (10mmol) of Tris (C 4 Hide 11 NO 3 , Tris) in 1000mL of deionized water, which was magnetically stirred until complete dissolution, then adjusted to PH 8.5 with concentrated hydrochloric acid, i.e., Tris buffer solution was obtained.

[0053] (2) were taken 0.5g Fe 3 O 4 Dopamine hydrochloride and 0.5g and 0.2g of cetyl trimethyl ammonium bromide (C 19 Hide 42 BrN, CTAB) ultrasonic dispersion prepared in Tris buffer solution (1) in a 250mL, stirred at room temperature for 12h, allowed to stand and centrifuged to give a black precipitate from ethanol, deionized water, and dried in vacuo 12h 60 ℃, cooled to dopamine coated after the room temperature to obtain a modified CTAB Fe 3 O 4 (Fe 3 O 4 @ PDA-CTAB).

[0054] (3) Take 0.5g (2) Fe prepared in 3 O 4 @ PDA-CTAB, in an argon atmosphere, was heated

[0055] Example 2

[0056] A process for preparing a porous carbon coating methods using CTAB regulatory transition metal oxide material, comprising the steps of:

[0057] (1) Take 1.2114g (10mmol) of Tris (C 4 Hide 11 NO 3 , Tris) in 1000mL of deionized water, which was magnetically stirred until complete dissolution, then adjusted to PH 8.5 with concentrated hydrochloric acid, i.e., Tris buffer solution was obtained.

[0058] (2) were taken 0.5g Fe 3 O 4 And dopamine hydrochloride 0.5g and 0.25g cetyl trimethyl ammonium bromide (C 19 Hide 42 BrN, CTAB) ultrasonic dispersion prepared in Tris buffer solution (1) in a 250mL, stirred at room temperature for 12h, allowed to stand and centrifuged to give a black precipitate from ethanol, deionized water, and dried in vacuo 12h 60 ℃, cooled to dopamine coated after the room temperature to obtain a modified CTAB Fe 3 O 4 (Fe 3 O 4 @ PDA-CTAB).

[0059] (3) Take 0.5g (2) Fe prepared in 3 O 4 @ PDA-CTAB, in an argon atmosphere, was heated 550