A kind of preparation method of p-doped solvothermal graphite phase carbon nitride photocatalyst
A photocatalyst and solvothermal technology, applied in the field of energy chemistry, can solve the problems of insignificant improvement of photocatalytic performance, ineffective doping of P elements, etc. Simple experimental setup
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[0029] A kind of P-doped solvothermal g-C of the present invention 3 N 4 The preparation method of photocatalyst comprises the steps:
[0030] S1. Put g-C 3 N 4 Disperse the powder in ethanol solution, and stir evenly after ultrasonic to obtain suspension A;
[0031] S2. Add an appropriate amount of water and ammonia water to the suspension A obtained in S1, stir evenly, heat and keep it at a certain temperature for a period of time, take it out, wash and dry, and obtain powder B;
[0032] S3. mix the powder B obtained in step S2 with a certain amount of sodium hydrogen hypophosphite (NaH 2 PO 2 ) was ground and mixed evenly, and after calcining at a certain temperature in a tube furnace with Ar gas, it was taken out, washed and dried, and finally P-doped solvothermal g-C was obtained. 3 N 4 catalyst of light. Among them, powder B and sodium hydrogen hypophosphite (NaH 2 PO 2 ) with a mixing mass ratio of 2:1, the calcination temperature under Ar gas is 300°C, the he...
Embodiment 1
[0036] The P-doped solvothermal g-C prepared by the present invention 3 N 4 The method for photocatalyst, comprises the steps:
[0037] S1. Add 300mg of g-C 3 N 4 The powder was dispersed in 60mL of ethanol solution, ultrasonicated for 30min and then stirred for 1h to obtain suspension A;
[0038] S2. Add 1.25mL of water and 1.25mL of ammonia water to the suspension A obtained in S1, stir for 30min, put it into a hydrothermal kettle, heat the solvent at 140 degrees for 24h, cool naturally, take it out, wash and dry, and obtain powder B ; Drying is adjusted to 50 degrees vacuum drying for 8 hours.
[0039] S3. Mix the powder B (100mg) obtained in step S2 with 50mg of sodium hydrogen hypophosphite (NaH 2 PO 2 ) was ground and mixed evenly, calcined in a tube furnace with Ar gas at 300°C for 2 hours, taken out, washed and dried, and finally obtained P-doped solvothermal g-C 3 N 4 catalyst of light. Drying is adjusted to 50 degrees of vacuum drying for 8 hours.
Embodiment 2
[0041] S1. Add 500mg of g-C 3 N 4 The powder was dispersed in 60mL of ethanol solution, ultrasonicated for 30min and then stirred for 1h to obtain suspension A;
[0042] S2. Add 1.25mL of water and 1.25mL of ammonia water to the suspension A obtained in S1, stir for 30min, put it into a hydrothermal kettle, heat the solvent at 140 degrees for 24h, cool naturally, take it out, wash and dry, and obtain powder B ; Drying is adjusted to 60 degrees vacuum drying for 8 hours.
[0043] S3. Mix the powder B (100mg) obtained in step S2 with 50mg of sodium hydrogen hypophosphite (NaH 2 PO 2 ) was ground and mixed evenly, calcined in a tube furnace with Ar gas at 300°C for 2 hours, taken out, washed and dried, and finally obtained P-doped solvothermal g-C 3 N 4 catalyst of light. Drying is adjusted to 60 degrees of vacuum drying for 8 hours.
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