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Preparation method of ianthinus photonic crystal structure colored film with photocatalysis effects

A photonic crystal, blue-violet technology, which is applied in the field of photonic crystal structure color film preparation, achieves broad application prospects, improves effective refractive index, and the process is simple and easy to implement.

Inactive Publication Date: 2015-08-12
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are few reports on the multifunctional research of photonic crystal structural color thin films and the achievements in photocatalytic degradation.

Method used

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  • Preparation method of ianthinus photonic crystal structure colored film with photocatalysis effects
  • Preparation method of ianthinus photonic crystal structure colored film with photocatalysis effects
  • Preparation method of ianthinus photonic crystal structure colored film with photocatalysis effects

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A method for preparing a blue-violet photonic crystal structural color film with photocatalytic effect, comprising the following steps:

[0036] (1) Weigh SiO with a particle size of 180±5nm at a mass ratio of 1:3.5 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 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 ultra...

Embodiment 2

[0054] A method for preparing a blue-violet photonic crystal structural color film with photocatalytic effect, comprising the following steps:

[0055] (1) Weigh SiO with a particle size of 180±5nm according to the mass ratio of 1:2.5 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, wash, centrifuge and dry after reacting for 3 hours to get PVP-modified SiO 2 Microspheres;

[0056] Among them, centrifugation is performed at 4000r / min for 20 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 80°C.

[0057] (2) Accurately weigh step (1) to obtain SiO modified by PVP 2 Add 0.2 g of microspheres into 10 mL of absolute ethanol and mix ultrasonically for ...

Embodiment 3

[0066] A method for preparing a blue-violet photonic crystal structural color film with photocatalytic effect, comprising the following steps:

[0067] (1) Weigh SiO with a particle size of 180±5nm at a mass ratio of 1:3 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 100mL water to the microsphere powder and add deionized water to the beaker, stir and mix with magnetic force, filter after reacting for 3 hours, wash, centrifuge and dry the precipitate to obtain PVP-modified SiO 2 Microspheres;

[0068] 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.

[0069] (2) Accurately weigh step (1) to obtain SiO modified by PVP 2 Add 0.2g of microspheres into 10mL of absolute ethanol and mix ultrasonic...

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Abstract

The invention discloses a preparation method of an ianthinus photonic crystal structure colored film with photocatalysis effects. The preparation method comprises 1, blending SiO2 microsphere powder with particle sizes of 180+ / -5nm and polyvinylpyrrolidone, adding water into the mixture and preparing PVP-modified SiO2 microspheres, 2, adding the PVP-modified SiO2 microspheres into anhydrous ethanol and carrying out ultrasonic treatment to obtain a SiO2 microsphere-containing emulsion, 3, preparing lithium hydroxide-ethanol and zinc acetate-ethanol mixed solutions, dropwisely adding the SiO2 microsphere-containing emulsion into the mixed solution, carrying out a reaction process, filtering the reaction product, carrying out washing, centrifugation and drying on the precipitates, and carrying out heat treatment to obtain SiO2@ZnO core-shell structure microspheres with photocatalysis functions, 4, adding ethanol into the SiO2@ZnO core-shell structure microspheres, and carrying out ultrasonic dispersion to obtain an emulsion, and 5, vertically inserting a glass substrate into the emulsion by a vertical sedimentation method so that the ianthinus photonic crystal structure colored film with photocatalysis effects is produced. The preparation method has the advantages of simple and easy processes, no pollution on the environment, large scale industrial production and wide application prospect.

Description

technical field [0001] The invention belongs to the technical field of photonic crystal structural color film preparation, and in particular relates to a preparation method of a blue-violet photonic crystal structural color film with photocatalytic effect. Background technique [0002] Structural color is produced by the phenomenon of interference, scattering or diffraction between the microstructure of the object and visible light. This is a kind of physical coloration, which has the advantages of environmental friendliness, bright color, never fading, and short preparation cycle. Among them, through the ordered self-assembly method of colloidal microspheres, an opal photonic crystal with alternating high and low refractive indices is formed, which has the characteristics of a photonic band gap. When the incident light frequency falls within the band gap range, the incident light will not pass through the photonic crystal. , the visible light that cannot continue to propaga...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C17/22B01J23/06
Inventor 王芬王幸张欣盖言成林营王毅朱建锋杨海波
Owner SHAANXI UNIV OF SCI & TECH
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