Method for simply preparing metal monatomic catalyst for efficiently decomposing hydrogen peroxide

[0026] Example 1:

[0027] 6 g of dicyandiamine, dissolved in 60 ml of deionized water, heated to 70 ° C, which was sufficiently dissolved, then 0.9732 g of anhydrous trichloride, stirred for 1 h, then completely evaporated to dryness, stirring dry solid grinding Come into powder. The above powder was placed in a tubular furnace under an AR atmosphere, heated to 550 ° C at 2 ° C / min, and held for 4 h. After cooling to room temperature, the resulting solid was ground, and the ultrasonic 60min was dispersed in deionized water, heated to 80 ° C for 1 h, filtered through heat, washed 3 times with deionized water, the filter cake was dried 12 h, the resulting solid was Fe- GC 3 N 4 Metal single atomic catalyst.

[0028] Fe-g-c 3 N4 Application of metal single atomic catalyst:

[0029] Take 10G a industrial liquid product (pH = 3-4), of which about 80% wt is methanol, about 10% wt is water, and the rest is impurities (including H 2 SO 4 ) And 0.8% WT h 2 O 2 . In order to reduce H in t

[0031] Example 2:

[0032] 6 g of dicyandiamine, dissolved in 60 ml of deionized water, heated to 70 ° C, which was sufficiently dissolved, then 1.498 g of five hydrazine pulsant sulfate sulfate, stirred for 1 h, then completely evaporated water, stirring the dried solid to powder . The above powder was placed in a tubular furnace under an AR atmosphere, heated to 550 ° C at 2 ° C / min, and held for 4 h. After cooling to room temperature, the resulting solid was ground, ultrasonic dispersion was dispersed in deionized water, and the mixture was stirred at 80 ° C for 1 h, filtered through heat, washed 3 times with deionized water, and the obtained solid was Cu-g-c. 3 N 4 Metal single atomic catalyst.

[0033] According to the test conditions in Example 1, 10 g of the same batch liquid product was taken, 0.5 GCu-g-C was added. 3 N 4 Metal single atomic catalyst, measured three cycles after H 2 O 2 The content was 0.025% wt, 0.028% wt, 0.030% wt, respectively.

[0034] Example 3:

[0035] 6 g of dicyandiamine was "dissolved in 60 ml of deionized water, heated to 70 ° C, which was sufficiently dissolved, then 1.449 g of copper nitrate was added, stirred for 1 h, and then completely evaporated to dryness, and the dried solid was polished into a powder. The above powder was placed in a tubular furnace under an AR atmosphere, heated to 550 ° C at 2 ° C / min, and held for 4 h. After cooling to room temperature, the resulting solid was ground, ultrasonic dispersion was dispersed in deionized water, and the mixture was stirred at 80 ° C for 1 h, filtered through heat, washed 3 times with deionized water, and the obtained solid was Cu-g-c. 3 N 4 Metal single atomic catalyst.

[0036] According to the test conditions in Example 1, 10 g of the same batch liquid product was taken, 0.5 GCu-g-C was added. 3 N 4 Metal single atomic catalyst, measured three cycles after H 2 O 2 The content was 0.022% wt, 0.027% wt, 0.032% wt, respectively.