Black phosphorus/g-c3n4 composite visible light photocatalytic material and its preparation method and application
A photocatalytic material, g-c3n4 technology, applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve the problems of poor photocatalytic efficiency and high recombination rate of photogenerated electrons and holes
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Embodiment 1
[0036] A kind of black phosphorus / g-C 3 N 4 The preparation method of composite visible light photocatalytic material comprises the following steps:
[0037] 1) Weigh 10g of urea and place it in a corundum crucible, put it in a muffle furnace, raise the temperature from room temperature to 550°C at a rate of 2.2°C / min, then keep it warm for 120min, then cool down to room temperature within 120min, and grind to obtain g-C 3 N 4 ;
[0038] 2) Weigh 100 mg of black phosphorus crystals and grind them with a mortar, then add 100 mL of N-methylpyrrolidone solvent, conduct probe ultrasound, ice-water bath ultrasound, and then centrifuge with absolute ethanol to clean, take the precipitate at a centrifugal speed of 4000r / min, Black phosphorus powder can be prepared by vacuum drying; among them, the conditions of ultrasonic treatment of the probe are controlled as follows: ultrasonic power is 1000W, ultrasonic time is 5h; the conditions of ice-water bath ultrasonic treatment are con...
Embodiment 2
[0043] A kind of black phosphorus / g-C 3 N 4 The preparation method of composite visible light photocatalytic material comprises the following steps:
[0044] 1) Weigh 10g of urea and place it in a corundum crucible, put it in a muffle furnace, raise the temperature from room temperature to 550°C at a rate of 2.2°C / min, then keep it warm for 120min, then cool down to room temperature within 120min, and grind to obtain g-C 3 N 4 ;
[0045] 2) Weigh 100mg of black phosphorus crystals and grind them with a mortar, then add 50mL of N-methylpyrrolidone solvent, conduct probe ultrasound, ice-water bath ultrasound, and then centrifugally clean with absolute ethanol, take the precipitate at a centrifugal speed of 4000r / min, Black phosphorus powder can be prepared by vacuum drying; among them, the conditions of ultrasonic treatment of the probe are controlled as follows: ultrasonic power is 600W, ultrasonic time is 6h; the conditions of ice-water bath ultrasonic treatment are control...
Embodiment 3
[0048] A kind of black phosphorus / g-C 3 N 4 The preparation method of composite visible light photocatalytic material comprises the following steps:
[0049] 1) Weigh 10g of urea and place it in a corundum crucible, put it in a muffle furnace, raise the temperature from room temperature to 550°C at a rate of 2.2°C / min, then keep it warm for 120min, then cool down to room temperature within 120min, and grind to obtain g-C 3 N 4 ;
[0050] 2) Weigh 100 mg of black phosphorus crystals and grind them with a mortar, then add 100 mL of N-methylpyrrolidone solvent, conduct probe ultrasound, ice-water bath ultrasound, and then centrifuge with absolute ethanol to clean, take the precipitate at a centrifugal speed of 4000r / min, Vacuum drying can prepare black phosphorus powder; among them, the conditions of ultrasonic treatment of the probe are controlled as follows: ultrasonic power is 500W, ultrasonic time is 7h; the conditions of ice-water bath ultrasonic treatment are controlled ...
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