Polythiophene-carbon nitride composite photocatalyst as well as preparation method and application thereof
A technology of polythiophene and carbon nitride, which is applied in the field of photocatalysis, can solve the problems that cannot fully meet the application requirements, high electron-hole recombination efficiency, and poor visible light absorption ability, so as to improve photocatalytic performance, light absorption ability, low cost effect
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Embodiment 1
[0043] A kind of polythiophene-carbon nitride composite photocatalyst, its preparation method comprises the following steps:
[0044] 1) Add 10.0 g of melamine into the crucible and place it in a muffle furnace, raise the temperature to 550°C at a heating rate of 5°C / min, calcinate at a constant temperature for 4 hours, grind and pass through a 500-mesh sieve, and then obtain the calcined product (block carbon nitride) into the crucible, placed in a muffle furnace, raised to 500°C at a heating rate of 10°C / min, and calcined at a constant temperature for 2 hours to obtain carbon nitride nanosheets;
[0045] 2) Add 1mL of thiophene to 100mL of chloroform, stir evenly, then add 2.800g of ammonium persulfate and fill it with argon for protection, then put it in an oil bath, keep it warm at 60°C for 12h, then wash and centrifuge 3 times with methanol , and then vacuum-dried at 60°C for 12 hours to obtain polythiophene;
[0046] 3) Add 100 mg of polythiophene to 100 mL of tetrahydr...
Embodiment 2
[0058] A kind of polythiophene-carbon nitride composite photocatalyst, its preparation method comprises the following steps:
[0059] 1) Add 10.0 g of melamine into the crucible and place it in a muffle furnace, raise the temperature to 550 °C at a heating rate of 5 °C / min, calcinate at a constant temperature for 4 hours, grind and pass through a 500-mesh sieve, and then obtain the calcined product (block carbon nitride) into the crucible, placed in a muffle furnace, raised to 500°C at a heating rate of 10°C / min, and calcined at a constant temperature for 2 hours to obtain carbon nitride nanosheets;
[0060] 2) Add 1mL of thiophene to 100mL of chloroform, stir evenly, then add 2.800g of ammonium persulfate and fill it with argon for protection, then put it in an oil bath, keep it warm at 60°C for 12h, then wash and centrifuge 3 times with methanol , and then vacuum-dried at 60°C for 12 hours to obtain polythiophene;
[0061] 3) Add 100 mg of polythiophene to 100 mL of tetrahy...
Embodiment 3
[0065] A kind of polythiophene-carbon nitride composite photocatalyst, its preparation method comprises the following steps:
[0066] 1) Add 10.0 g of melamine into the crucible and place it in a muffle furnace, raise the temperature to 550 °C at a heating rate of 5 °C / min, calcinate at a constant temperature for 4 hours, grind and pass through a 500-mesh sieve, and then obtain the calcined product (block carbon nitride) into the crucible, placed in a muffle furnace, raised to 500°C at a heating rate of 10°C / min, and calcined at a constant temperature for 2 hours to obtain carbon nitride nanosheets;
[0067] 2) Add 1mL of thiophene to 100mL of chloroform, stir evenly, then add 2.800g of ammonium persulfate and fill it with argon for protection, then put it in an oil bath, keep it warm at 60°C for 12h, then wash and centrifuge 3 times with methanol , and then vacuum-dried at 60°C for 12 hours to obtain polythiophene;
[0068] 3) Add 100 mg of polythiophene to 100 mL of tetrahy...
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