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Visible light catalytic system based on microstructure optical fiber perform as well as preparation method thereof

A technology for microstructured optical fibers and preforms, applied in the field of photocatalytic systems, can solve problems such as energy utilization limitations, and achieve the effects of enhancing load firmness and increasing specific surface area

Inactive Publication Date: 2014-07-02
XIAN UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In fact, the ultraviolet light energy in sunlight only accounts for about 4% of its total energy, which is limited to a certain extent in energy utilization.

Method used

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  • Visible light catalytic system based on microstructure optical fiber perform as well as preparation method thereof
  • Visible light catalytic system based on microstructure optical fiber perform as well as preparation method thereof
  • Visible light catalytic system based on microstructure optical fiber perform as well as preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A visible light photocatalytic system based on a microstructured optical fiber prefabricated rod, comprising a microstructured optical fiber preformed rod, the inner wall of the hole of the microstructured optical fiber preformed rod is covered with a titanium dioxide gel film doped with a visible light photocatalyst Ag / AgBr. The diameter of the microstructured optical fiber preform is 15 mm. The inner diameter of the channel of the microstructure optical fiber preform is 270 μm.

[0032] A method for preparing a visible light photocatalytic system based on a microstructured optical fiber preform, characterized in that the method comprises the following steps:

[0033] Step 1. At room temperature, mix and stir butyl titanate and absolute ethanol with a volume ratio of 1:1, and add 0.03 concentrated hydrochloric acid to the volume of butyl titanate during the stirring process to obtain titanium dioxide Sol; the mass concentration of concentrated hydrochloric acid is 36%...

Embodiment 2

[0042] A visible light photocatalytic system based on a microstructured optical fiber prefabricated rod, comprising a microstructured optical fiber preformed rod, the inner wall of the hole of the microstructured optical fiber preformed rod is covered with a titanium dioxide gel film doped with a visible light photocatalyst Ag / AgBr. The diameter of the microstructured optical fiber preform is 13mm. The inner diameter of the channel of the microstructure optical fiber preform is 265 μm.

[0043] A method for preparing a visible light photocatalytic system based on a microstructured optical fiber preform, characterized in that the method comprises the following steps:

[0044] Step 1. At room temperature, mix and stir butyl titanate and absolute ethanol with a volume ratio of 1:1, and add 0.03 concentrated hydrochloric acid to the volume of butyl titanate during the stirring process to obtain titanium dioxide Sol; the mass concentration of concentrated hydrochloric acid is 36%;...

Embodiment 3

[0051] A visible light photocatalytic system based on a microstructured optical fiber prefabricated rod, comprising a microstructured optical fiber preformed rod, the inner wall of the hole of the microstructured optical fiber preformed rod is covered with a titanium dioxide gel film doped with a visible light photocatalyst Ag / AgBr. The diameter of the microstructured optical fiber preform is 18mm. The inner diameter of the channel of the microstructure optical fiber preform is 275 μm.

[0052] A method for preparing a visible light photocatalytic system based on a microstructured optical fiber preform, characterized in that the method comprises the following steps:

[0053] Step 1. At room temperature, mix and stir butyl titanate and absolute ethanol with a volume ratio of 1:1, and add 0.03 concentrated hydrochloric acid to the volume of butyl titanate during the stirring process to obtain titanium dioxide Sol; the mass concentration of concentrated hydrochloric acid is 36%....

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Abstract

The invention discloses a visible light catalytic system based on a microstructure optical fiber perform as well as a preparation method thereof. The visible light catalytic system based on the microstructure optical fiber perform comprises a microstructure optical fiber perform; a titanium dioxide gel membrane doped with visible light catalyst Ag / AgBr is paved and attached to the inner wall of a duct of the microstructure optical fiber perform. The preparation method comprises the following steps: step 1, preparing titanium dioxide gel; step 2, dispersing Ag / AgBr nano powder into the titanium dioxide gel; step 3, putting the microstructure optical fiber perform into the titanium dioxide gel in the step 2, and paving and attaching the titanium dioxide gel on the inner wall of the duct. The visible light catalytic system of the microstructure optical fiber perform can provide high specific surface area and volume ratio, has favorable optical property, and improves the optical catalysis reaction efficiency.

Description

technical field [0001] The invention belongs to the technical field of photocatalysis systems, and in particular relates to a visible light photocatalysis system and a preparation method based on a microstructure optical fiber prefabricated rod. Background technique [0002] With the development of modern industry, as an important topic in the field of environmental protection, water pollution control has been paid attention to all over the world. Photocatalytic degradation of organic pollutants under visible light conditions has become one of the most important topics in the field of photocatalysis. For better utilization of solar energy, the preparation of photocatalysts with high activity under visible light has always been a meaningful challenge. The surface plasmon resonance effect of noble metal nanostructures enables them to exhibit obvious characteristic absorption in the visible light region, which opens up a new practical space for the research of visible light-dr...

Claims

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Application Information

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IPC IPC(8): B01J31/38B01J35/10C02F1/30
CPCY02W10/37
Inventor 李冬冬佘江波
Owner XIAN UNIV OF POSTS & TELECOMM