Bismuth oxyiodide / nitrogen doped graphene composite photocatalyst and preparation method thereof
A graphene composite, bismuth iodide technology, applied in the field of photocatalysis, can solve problems such as the composite rate limiting photocatalytic performance, and achieve the effects of excellent electron transport performance, large specific surface area, and improved photocatalytic performance
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[0042] Example 1:
[0043] The first step: 1) Using graphite powder as raw material, graphene oxide was prepared by Hume method. After several times of suction filtration and washing with deionized water and ethanol, deionized water was used as solvent to obtain graphene oxide suspension (2 mg / mL) 2) Mix and stir 50mL graphene oxide suspension with 1g urea (that is, the mass ratio of graphene oxide and urea is 0.1:1) for more than 12 hours, then dry and grind to obtain the mixed solid powder of graphene oxide and urea; 3 ) The above mixed solid powder is annealed at 1100 °C in a vacuum environment of less than 1 Pa to obtain N-doped graphene.
[0044] The second step: 1) 1.66g (10mM) potassium iodide was dissolved in 30mL of ethylene glycol, 30mg of N-doped graphene obtained in the first step was added, and the solution A was obtained by ultrasonic dispersion for 2h. 4.85g (10mM) bismuth nitrate pentahydrate (with potassium iodide and other substances, and the mass ratio of N...
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[0046] Example 2:
[0047] The first step: 1) Using graphite powder as raw material, graphene oxide was prepared by Hume method. After several times of suction filtration and washing with deionized water and ethanol, deionized water was used as solvent to obtain graphene oxide suspension (1 mg / mL). ); 2) 100mL graphene oxide suspension and 1g urea (that is, the mass ratio of graphene oxide and urea is 0.1:1) were mixed and stirred for more than 12 hours, then dried and ground to obtain the mixed solid powder of graphene oxide and urea 3) The mixed solid powder is annealed at 1100° C. in a vacuum environment of less than 1 Pa to obtain N-doped graphene.
[0048] The second step: 1) 0.83g (5mM) potassium iodide was dissolved in 30mL of ethylene glycol, 30mg of N-doped graphene obtained in the first step was added, and the solution A was obtained by ultrasonic dispersion for 2h. 2.42g (5mM) of bismuth nitrate pentahydrate was dissolved in 30mL of ethylene glycol to obtain liquid...
Example Embodiment
[0050] Example 3:
[0051] The first step: 1) Using graphite powder as raw material, graphene oxide was prepared by Hume method. After several times of suction filtration and washing with deionized water and ethanol, deionized water was used as solvent to obtain graphene oxide suspension (2 mg / mL). ); 2) 50mL graphene oxide suspension and 1g urea (that is, the mass ratio of graphene oxide and urea is 0.1:1) are mixed and stirred for more than 12 hours, then dried and ground to obtain the mixed solid powder of graphene oxide and urea 3) The mixed solid powder is annealed at 1100° C. in a vacuum environment of less than 1 Pa to obtain N-doped graphene.
[0052] The second step: 1) 0.42g (2.5mM) potassium iodide was dissolved in 30mL of ethylene glycol, 50mg of N-doped graphene obtained in the first step was added, and the solution A was obtained by ultrasonic dispersion for 2h. 1.21g (2.5mM) of bismuth nitrate pentahydrate was dissolved in 30mL of ethylene glycol to obtain solu...
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