Preparation method of two-dimensional transverse polymer heterojunction visible-light response catalytic hydrogen production material and application thereof
A technology of polymers and heterojunctions, applied in the direction of organic compound/hydride/coordination complex catalysts, chemical instruments and methods, physical/chemical process catalysts, etc. Problems such as high exciton binding energy and slow transfer rate of photogenerated carriers achieve the effect of improving photocatalytic effect and low cost
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Embodiment 1
[0018] Add 10 g of melamine to 50 mL of phenanthrene in methanol, stir for 2 h at room temperature, and then ultrasonically disperse for 50 min. The power of ultrasonic dispersion is controlled at 100 W, and the temperature of ultrasonic dispersion is controlled at 40 °C. Afterwards, it was transferred to a drying oven at 60 °C for 10 h. After complete drying, it was calcined in a muffle furnace at a heating rate of 15 °C / min. During the heating process, the temperature was maintained at 300 °C for 1 h and at 400 °C for 1 h. h, keep the temperature at 550 °C for 4 h, wash with deionized water 5 times after cooling, and dry at 60 °C for 12 h. heterojunction materials. The hydrogen production of the two-dimensional heterojunction material prepared by the present invention is as high as 2156 μmol / g after being irradiated for 6 hours under a xenon lamp light source, which is about 4 times the hydrogen production of pure graphite phase carbon nitride.
[0019] The test of the phot...
Embodiment 2
[0022] 10 g of melamine was added to 25 mL of phenanthrene in methanol solution, stirred at room temperature for 2 h, and then ultrasonically dispersed for 50 min. The power of ultrasonic dispersion was controlled at 100 W, and the temperature of ultrasonic dispersion was controlled at 40 °C. Then transfer to a 60°C oven for drying for 10 hours. After complete drying, place it in a muffle furnace for calcination. The heating rate is 15°C / min. During the heating process, keep the temperature at 300°C for 1h, and keep the temperature at 400°C for 1h. Keep the temperature at 550°C for 4 h, and other operations are the same as in Example 1. The resulting photocatalytic hydrogen production was 1314 μmol / g.
Embodiment 3
[0024] 10 g of melamine was added to 75 mL of phenanthrene in methanol solution, stirred at room temperature for 2 h, and then ultrasonically dispersed for 50 min. The power of ultrasonic dispersion was controlled at 100 W, and the temperature of ultrasonic dispersion was controlled at 40 °C. Then transfer to a 60°C oven to dry for 10h. After complete drying, place it in a muffle furnace for calcination. The heating rate is 15°C / min. During the heating process, keep the temperature at 300°C for 1h, and keep the temperature at 400°C for 1h. Keep the temperature at 550°C for 4 h, and other operations are the same as in Example 1. The resulting photocatalytic hydrogen production was 1739 μmol / g.
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