Preparation method of orange-yellow photonic crystal structure color thin film with photo-catalytic effect
A photonic crystal, orange-yellow technology, applied in the field of photonic crystal structure color thin film preparation, can solve the problem of little research on thin films, and achieve the effects of enhanced catalytic degradation efficiency, no environmental pollution, and easy process.
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Embodiment 1
[0035] A method for preparing an orange-yellow photonic crystal structural color film with photocatalytic effect, comprising the following steps:
[0036] (1) Weigh SiO with a particle size of 252±5nm at a mass ratio of 1:2.5 2 A few grams of microsphere powder and polyvinylpyrrolidone (PVP), mix evenly and place in a beaker, according to every 2.0g SiO 2Add 100mL of water to the microsphere powder and add deionized water to the beaker, stir and mix with magnetic force, filter after reacting for 4 hours, wash, centrifuge and dry the precipitate to obtain PVP-modified SiO 2 Microspheres;
[0037] Among them, centrifugation is performed at 6000r / min for 15 minutes, washing is performed by first washing the precipitate with deionized water for 2 to 4 times, and then washing with absolute ethanol for 2 to 4 times; drying is performed at 60°C.
[0038] (2) Accurately weigh step (1) to obtain SiO modified by PVP 2 Add 0.25g of microspheres into 10mL of absolute ethanol and mix ul...
Embodiment 2
[0054] A method for preparing an orange-yellow photonic crystal structural color film with photocatalytic effect, comprising the following steps:
[0055] (1) Weigh SiO with a particle size of 252±5nm according to the mass ratio of 1:2 2 Several grams of microsphere powder and polyvinylpyrrolidone (PVP), mix evenly and place in a beaker, according to every 1.5g SiO 2 Add 100mL water to the microsphere powder and add deionized water to the beaker, stir and mix with magnetic force. After reacting for 4 hours, wash, centrifuge and dry to obtain PVP-modified SiO 2 Microspheres;
[0056] Among them, centrifugation is performed at 5000r / min for 18 minutes, washing is performed by first washing the precipitate with deionized water for 2 to 4 times, and then washing with absolute ethanol for 2 to 4 times; drying is performed at 75°C.
[0057] (2) Accurately weigh step (1) to obtain SiO modified by PVP 2 Add 0.2g of microspheres into 10mL of absolute ethanol and mix ultrasonically f...
Embodiment 3
[0067] A method for preparing an orange-yellow photonic crystal structural color film with photocatalytic effect, comprising the following steps:
[0068] (1) Weigh SiO with a particle size of 252±5nm according to the mass ratio of 1:2 2 A few grams of microsphere powder and polyvinylpyrrolidone (PVP), mix evenly and place in a beaker, according to every 2.0g SiO 2 Add 100 mL of water to the microsphere powder and add deionized water to the beaker, stir and mix with a magnetic force, filter after 2 hours of reaction, wash the precipitate, centrifuge, and dry to obtain PVP-modified SiO 2Microspheres;
[0069] Among them, centrifugation is performed at 5000r / min for 15 minutes, washing is performed by first washing the precipitate with deionized water for 2 to 4 times, and then washing with absolute ethanol for 2 to 4 times; drying is performed at 70°C.
[0070] (2) Accurately weigh step (1) to obtain SiO modified by PVP 2 Add 0.15 g of microspheres into 10 mL of absolute eth...
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