Heterojunction composite photocatalyst with atomic channels and preparation method and application thereof
A technology of composite light and heterojunction, applied in the field of photocatalysis, can solve problems such as disadvantages
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Embodiment 1
[0034] 1) Weigh 10g of graphite phase carbon nitride C 3 N 4 Powder and 0.46g of disodium hydrogen phosphate Na 2 HPO 4 After grinding for 60 min, the mixed powder was placed in a low temperature plasma device. Introduce high-purity nitrogen, remove the air in the device, and turn on the vacuum pump to evacuate to 5Pa. Then turn on the AC power supply to generate hydrogen plasma, the discharge power is 100W, and the discharge time is 30min. After the discharge, the powder was collected and washed three times with absolute ethanol and deionized water, respectively, and dried to obtain 1wt% phosphorus-doped carbon nitride P-C. 3 N 4 powder.
[0035] 2) Weigh 1g of P-C 3 N 4 Powder, 0.07mmol of ferrous sulfate FeSO 4 and 0.035mmol of (NH 4 ) 2 HPO 4 , added to 100 mL of deionized water, and stirred in a water bath at 80 °C for 2 h. Then freeze-dried to obtain mixed powder.
[0036] 3) Put the above mixed powder into a low temperature plasma device. Introduce high-p...
Embodiment 2
[0039] 1) Weigh 15g of graphite phase carbon nitride powder and 1.11g of ammonium dihydrogen phosphate NH 4 H 2 PO 4 After grinding for 45 min, the mixed powder was placed in a low temperature plasma device. Pour in high-purity argon, remove the air in the device, and turn on the vacuum pump to evacuate to 8Pa. Then turn on the AC power to generate hydrogen plasma (10% H 2 +90% Ar), the discharge power is 150W, and the discharge time is 20min. After the discharge, the powder was collected and washed 4 times with absolute ethanol and deionized water, respectively, and dried to obtain 2wt% phosphorus-doped carbon nitride P-C. 3 N 4 powder.
[0040] 2) Weigh 0.5g of P-C 3 N 4 Powder, 0.11mmol of cobalt nitrate Co(NO 3 ) 2 and 0.055 mmol of NH 4 H 2 PO 4 , was added to 80 mL of deionized water, and stirred in a water bath at 70 °C for 3 h. Then freeze-dried to obtain mixed powder.
[0041] 3) Put the above mixed powder into a low temperature plasma device. Introduc...
Embodiment 3
[0049] Weigh 8g of graphite phase carbon nitride powder and 2.68g of potassium dihydrogen hypophosphite KH 2 PO 2 After grinding for 50 min, the mixed powder was placed in a low temperature plasma device. Introduce high-purity nitrogen, remove the air in the device, and turn on the vacuum pump to evacuate to 10Pa. Then turn on the AC power to generate hydrogen plasma (15% H 2 +85%N 2 ), the discharge power is 120W, and the discharge time is 30min. After the discharge, the powder was collected, washed with absolute ethanol and deionized water for 5 times, and dried to obtain 10wt% phosphorus-doped carbon nitride P-C. 3 N 4 powder.
[0050] Weigh 0.6g of P-C 3 N 4 Powder, 0.83mmol of cobalt chloride CoCl 2 , 0.83mmol of nickel chloride NiCl 2 and 0.83mmol of KH 2 PO 2 , was added to 60 mL of deionized water, and stirred in a water bath at 60 °C for 6 h. Then freeze-dried to obtain mixed powder.
[0051] The above mixed powder is placed in a low temperature plasma d...
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