Graphite-phase carbon nitride composite photocatalyst and preparation method thereof
A technology of graphite phase carbon nitride and composite light, which is applied in the direction of physical/chemical process catalysts, chemical instruments and methods, inorganic chemistry, etc., can solve the problems of photocatalytic activity of composite materials that need to be improved, unfavorable effective separation of electron-hole pairs, Insufficient contact and other problems to achieve the effect of tight combination, improved quantum efficiency, and improved separation speed
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Embodiment 1
[0041] (1) Put 40g of melamine into a crucible with a cover, raise the temperature to 550°C at 4°C / min in a muffle furnace, then heat-preserve and calcinate for 4h, and after cooling to room temperature, block graphite phase carbon nitride (g-C 3 N 4 ), ground into powder, put it into a crucible with a cover, heated up to 550°C at 5°C / min in a muffle furnace, and then heat-preserved and calcined for 3h to obtain g-C 3 N 4 Nanosheets;
[0042] (2) Add 1g g-C 3 N 4 Mix the nanosheets with 60ml of absolute ethanol and 3ml of glacial acetic acid with a purity ≥ 99.5%, and form a uniform mixture A after magnetic stirring for 30 minutes; drop 2ml of butyl titanate into the mixture A, and form a uniform mixture B after magnetic stirring for 30 minutes; Drop 1ml of ammonia water containing 25% to 28% ammonia into mixture B, and stir magnetically for 60 minutes to form a uniform precursor; put the precursor in an oven at 100°C for 12 hours and then grind it to obtain a powder. Put ...
Embodiment 2
[0053] (1) Put 45g of melamine into a crucible with a cover, raise the temperature to 550°C at 4°C / min in a muffle furnace, then heat-preserve and calcinate for 4h, and after cooling to room temperature, block graphite phase carbon nitride (g-C 3 N 4 ), ground into powder, put it into a crucible with a cover, heated up to 550°C at 5°C / min in a muffle furnace, and then heat-preserved and calcined for 3h to obtain g-C 3 N 4 Nanosheets;
[0054] (2) Add 2g g-C 3 N 4 Mix the nanosheets with 80ml of absolute ethanol and 3ml of glacial acetic acid with a purity ≥ 99.5%, and form a uniform mixture A after magnetic stirring for 20 minutes; drop 3ml of butyl titanate into the mixture A, and form a uniform mixture B after magnetic stirring for 30 minutes; Drop 1.8ml of ammonia water containing 25% to 28% ammonia into mixture B, and stir magnetically for 60 minutes to form a uniform precursor; dry the precursor in an oven at 120°C for 16 hours and grind to obtain a powder. In a cove...
Embodiment 3
[0057] (1) Put 50g of melamine into a crucible with a cover, raise the temperature to 550°C at 4°C / min in a muffle furnace, then heat-preserve and calcinate for 4h, and after cooling to room temperature, block graphite phase carbon nitride (g-C 3 N 4 ), ground into powder, put it into a crucible with a cover, heated up to 550°C at 5°C / min in a muffle furnace, and then heat-preserved and calcined for 3h to obtain g-C 3 N 4 Nanosheets;
[0058] (2) Add 1g g-C 3 N 4 Mix the nanosheets with 60ml of absolute ethanol and 2ml of glacial acetic acid with a purity ≥ 99.5%, and form a uniform mixture A after magnetic stirring for 20 minutes; drop 3ml of butyl titanate into the mixture A, and form a uniform mixture B after magnetic stirring for 20 minutes; Drop 1.2ml of ammonia water containing 25% to 28% ammonia into mixture B, and stir magnetically for 40 minutes to form a uniform precursor; dry the precursor in an oven at 120°C for 16 hours and grind to obtain a powder. Put the po...
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