Preparation method of photocatalytic photoconductive material

A photoconductive material and photocatalytic technology, which is applied in the field of preparation of photocatalytic photoconductive materials, can solve the problems of easy shedding light utilization rate, difficulty in separation and recovery, influence on catalytic activity, etc. Active, life-extending effect

Inactive Publication Date: 2012-08-08
SHAANXI UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the powder photocatalyst has problems such as separation and recovery difficulties and secondary pollution during use, so thin-film photocatalysts have gradually become a new research hotspot.
Usually, the immobilization technology has the disadvantages of affecting the catalytic activity, the amount of catalyst

Method used

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  • Preparation method of photocatalytic photoconductive material
  • Preparation method of photocatalytic photoconductive material

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0027] Example 1:

[0028] 1) Preparation of original flooding fluid

[0029] Add 16% butyl titanate and 5% diethanolamine to 79% absolute ethanol to obtain a mixed solution by volume. Then add 1% neodymium nitrate by mass of the mixed solution to the mixed solution, and then stir thoroughly Get the original flooding fluid;

[0030] 2) Prepare dripping liquid

[0031] Add 8% distilled water to 92% absolute ethanol according to the volume ratio, and stir until fully mixed to obtain dripping liquid;

[0032] 3) Preparation of nano-TiO 2 Sol

[0033] Under vigorous stirring, drop the dripping liquid into the original flooding solution and continue to vigorously stir to prepare transparent nano-TiO 2 Sol, in which the volume percentage of the dripping liquid is 9%;

[0034] 4) Surface treatment

[0035] Ultrasonic cleaning and drying the high silica optical fiber, and then immersing it in a strong alkali solution, and then ultrasonic cleaning and drying;

[0036] 5) Coating nano TiO 2

[0037] ...

Example Embodiment

[0038] Example 2:

[0039] 1) Preparation of original flooding fluid

[0040] Add 20% butyl titanate and 4% diethanolamine to 76% absolute ethanol to obtain a mixed solution by volume. Then add 2% neodymium nitrate by mass of the mixed solution to the mixed solution, and then stir thoroughly Get the original flooding fluid;

[0041] 2) Prepare dripping liquid

[0042] Add 15% distilled water to 85% absolute ethanol according to the volume ratio, and stir until fully mixed to obtain dripping liquid;

[0043] 3) Preparation of nano-TiO 2 Sol

[0044] Under vigorous stirring, drop the dripping liquid into the original flooding solution and continue to vigorously stir to prepare transparent nano-TiO 2 Sol, in which the volume percentage of the dripping liquid is 10%;

[0045] 4) Surface treatment

[0046] Ultrasonic cleaning and drying the high silica optical fiber, and then immersing it in a strong alkali solution, and then ultrasonic cleaning and drying;

[0047] 5) Coating nano TiO 2

[0048...

Example Embodiment

[0049] Example 3:

[0050] 1) Preparation of original flooding fluid

[0051] Add 22% butyl titanate and 6% diethanolamine to 72% absolute ethanol to obtain a mixed solution by volume. Then add 3% neodymium nitrate by mass of the mixed solution to the mixed solution, and then stir thoroughly Get the original flooding fluid;

[0052] 2) Prepare dripping liquid

[0053] Add 10% distilled water to 90% absolute ethanol according to the volume ratio, and stir until fully mixed to obtain a dripping liquid;

[0054] 3) Preparation of nano-TiO 2 Sol

[0055] Under vigorous stirring, drop the dripping liquid into the original flooding solution and continue to vigorously stir to prepare transparent nano-TiO 2 Sol, in which the volume percentage of the dripping liquid is 8%;

[0056] 4) Surface treatment

[0057] Ultrasonic cleaning and drying the high silica optical fiber, and then immersing it in a strong alkali solution, and then ultrasonic cleaning and drying;

[0058] 5) Coating nano TiO 2

[005...

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Abstract

A preparation method of a photocatalytic photoconductive material is disclosed. A sol-gel method is adopted to prepare neodymium-doped nanometer TiO2 to enlarge the light response range of the neodymium-doped nanometer TiO2. The photoconductive material with photocatalytic performances is prepared by using high silica optical fibers as a carrier, and adopting a method combining vacuum dipping with sol-gel to coat modified nanometer TiO2 on surfaces of the high silica optical fibers. The immobilization of the nanometer TiO2 is realized, so problems of difficult separation and recovery, generation of secondary pollution and the like existing in the use process of a powdery photocatalyst are solved; the high silica fibers have high specific surface areas, so the amount for loading the nanometer TiO2 is substantially improved; and the photoconductive performances of the carrier material high silica fibers can furthest utilize the initiation capability of light to the catalyst, so the photocatalytic performances of the nanometer TiO2 are improved.

Description

technical field [0001] The invention relates to the field of materials, in particular to a preparation method of a photocatalytic photoconductive material loaded with neodymium-doped nano-titanium dioxide. Background technique [0002] Titanium dioxide photocatalytic materials have very broad application prospects in air purification, drinking water disinfection and industrial waste treatment, which has attracted the attention of governments and scientists all over the world. However, the powdery photocatalysts have problems such as separation and recovery difficulties and secondary pollution during use, so thin-film photocatalysts have gradually become a new research hotspot. Usually, the immobilization technology has the disadvantages of affecting the catalytic activity, the amount of catalyst immobilized on the carrier is small and easy to fall off, and the light utilization rate is low. Therefore, nano-TiO with high catalytic activity has been prepared. 2 and its immobi...

Claims

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Application Information

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IPC IPC(8): B01J23/10B01J35/06G02B6/00
Inventor 黄凤萍孙晶晶樊英鸽王保和彭莉
Owner SHAANXI UNIV OF SCI & TECH
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