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Preparation method and application of hollow mesoporous silica photonic crystal

A mesoporous silica and photonic crystal technology, which is applied in chemical instruments and methods, crystal growth, single crystal growth, etc., can solve the problems of expensive equipment, large measurement error, and complicated operation, and achieve the effect of cheap detection

Active Publication Date: 2019-03-26
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to solve the technical problems of large measurement error, expensive equipment, and complicated operation in existing methods for detecting homologues or isomers, and provides a method for preparing hollow mesoporous silica photonic crystals and its application

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  • Preparation method and application of hollow mesoporous silica photonic crystal
  • Preparation method and application of hollow mesoporous silica photonic crystal
  • Preparation method and application of hollow mesoporous silica photonic crystal

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specific Embodiment approach 1

[0018] Specific implementation mode 1: The preparation method of hollow mesoporous silica photonic crystal in this implementation mode:

[0019] 1. Use water and ethanol to ultrasonically clean the glass sheet 5 times in sequence, and dry it for later use;

[0020] 2. Disperse hollow mesoporous silica with an inner diameter of 100nm to 500nm and an outer diameter of 120nm to 800nm ​​in 5mL of solvent to obtain a dispersion with a mass fraction of 0.2% to 1.2%;

[0021] 3. Vertically insert the glass sheet treated in step 1 into the dispersion liquid, and vertically deposit it in a constant temperature incubator at 45°C to 65°C for 72 hours to obtain a hollow mesoporous silica photonic crystal;

[0022] The solvent described in step 2 is ethanol or a mixture of water and ethanol, and the amount of water in the mixture of water and ethanol is 0.1mL-2mL.

specific Embodiment approach 2

[0023] Embodiment 2: This embodiment differs from Embodiment 1 in that in Step 2, hollow mesoporous silica with an inner diameter of 150 nm to 480 nm and an outer diameter of 150 nm to 750 nm is dispersed in 5 mL of solvent. Others are the same as the first embodiment.

specific Embodiment approach 3

[0024] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that in step 2, hollow mesoporous silica with an inner diameter of 200 nm and an outer diameter of 260 nm is dispersed in 5 mL of solvent. Others are the same as those in Embodiment 1 or 2.

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Abstract

The invention discloses a preparation method and application of a hollow mesoporous silica photonic crystal and relates to preparation methods and application of silica photonic crystals. The technical problems to be solved are that an existing homolog or isomeride detection method is large in measuring error, expensive in equipment and complex to implement. The preparation method includes dispersing hollow mesoporous silica into a 5 mL of solvent so as to obtain dispersion liquid; vertically inserting a cleaned glass sheet into the dispersion liquid, and performing vertical deposition in a constant-temperature incubator at 45-65 DEG C for 72 hours so as to obtain the hollow mesoporous silica photonic crystal. A quick convenient cost-saving trace homolog or isomeride detection method is also provided.

Description

technical field [0001] The invention relates to a preparation method and application of a silicon dioxide photonic crystal. Background technique [0002] Although homologues or isomers have many similar structures and properties, they need to be strictly distinguished and monitored in the fields of environmental protection, fine chemicals, catalysis, and life medicine, which play an important role in social production and human life safety. important role. The traditional methods for detecting homologues or isomers mainly include: optical rotation method, gas chromatography, infrared spectroscopy and nuclear magnetic method. Although the optical rotation method is simple to operate and cheap, its measurement error is large and the accuracy needs to be improved; although the gas chromatography, infrared spectroscopy and nuclear magnetic method have high precision, the equipment is expensive and the operation is complicated. In order to overcome the shortcomings of the above...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C30B29/18C30B29/64
CPCC30B29/18C30B29/64
Inventor 李垚熊成佳赵九蓬
Owner HARBIN INST OF TECH