Preparation method of titanium dioxide-CNT (carbon nanotube)-chitosan thin film

A technology of carbon nanotubes and titanium dioxide, which is applied in the field of preparation of titanium dioxide-carbon nanotubes-chitosan films, can solve the problems of easy falling off, difficulty in obtaining catalytic film layers, and uneven film layers, so as to protect the environment and reduce production costs. Low, excellent catalytic oxidation performance

Inactive Publication Date: 2017-12-08
WUHAN QIANRUITAI ENVIRONMENT TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the prior art, titanium dioxide is used to degrade volatile organic pollutants in the air, and it is difficult to obtain a catalytic film layer. The catalytic film layer is often obtained by dipping, and the film layer is uneven and easy to fall off.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] The invention provides a preparation method of titanium dioxide-carbon nanotube-chitosan film, comprising the following steps (1) under stirring conditions, tetrabutyl titanate is dispersed in absolute ethanol to obtain uniform and transparent titanic acid The absolute ethanol solution of tetrabutyl titanate; (2) disperse the carbon nanotubes in absolute ethanol to form a suspension, add the suspension dropwise to the absolute ethanol solution of tetrabutyl titanate, stir for 1 hour, and gradually Add acetic acid solution dropwise, and stir until a uniform gel is formed; (3) after aging for 2 days, dry, put the dried product into a muffle furnace and sinter at 450° C. for 2 hours to obtain a titanium dioxide-carbon nanotube composite material; (4) Get chitosan and add water to dissolve, add acetic acid thereinto, generate colloidal liquid, add titanium dioxide-carbon nanotube composite material, stir into blended liquid; (4) spread blended liquid evenly on glass plate, d...

Embodiment 2

[0023] The invention provides a kind of preparation method of titanium dioxide-carbon nanotube-chitosan film, it is characterized in that: comprise the following steps (1) under the condition of stirring, tetrabutyl titanate is dispersed in dehydrated alcohol, obtains uniform Transparent dehydrated ethanol solution of tetrabutyl titanate; (2) carbon nanotubes are dispersed in dehydrated ethanol to form a suspension, and the suspension is added dropwise in the dehydrated ethanol solution of tetrabutyl titanate, stirred After 1 hour, add acetic acid solution dropwise and stir until a uniform gel is formed; (3) After aging for 2 days, dry it, put the dried product in a muffle furnace and sinter at 450°C for 2 hours to obtain a titanium dioxide-carbon nanotube composite material (4) dissolving chitosan in water, adding acetic acid to it to generate colloidal liquid, adding titanium dioxide-carbon nanotube composite material, stirring into a blended liquid; (4) spreading the blended...

Embodiment 3

[0030] The invention provides a kind of preparation method of titanium dioxide-carbon nanotube-chitosan film, it is characterized in that: comprise the following steps (1) under the condition of stirring, tetrabutyl titanate is dispersed in dehydrated alcohol, obtains uniform Transparent dehydrated ethanol solution of tetrabutyl titanate; (2) carbon nanotubes are dispersed in dehydrated ethanol to form a suspension, and the suspension is added dropwise in the dehydrated ethanol solution of tetrabutyl titanate, stirred After 1 hour, add acetic acid solution dropwise and stir until a uniform gel is formed; (3) After aging for 2 days, dry it, put the dried product in a muffle furnace and sinter at 450°C for 2 hours to obtain a titanium dioxide-carbon nanotube composite material (4) dissolving chitosan in water, adding acetic acid to it to generate colloidal liquid, adding titanium dioxide-carbon nanotube composite material, stirring into a blended liquid; (4) spreading the blended...

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PUM

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Abstract

The invention aims to provide a preparation method of a composite material with high air pollutant degradation efficiency, and a titanium dioxide attached thin film of the composite material is uniform and is not prone to falling off. According to the prepared titanium dioxide and chitosan polymerized composite material, titanium dioxide has excellent catalytic oxidation performance, can efficiently treat organic compounds and part of inorganic matter in water and has quite strong antifouling, sterilizing and deodorizing functions, and the composite material saves cost, protects environment and has higher economic benefits.

Description

technical field [0001] The invention relates to a preparation method of a titanium dioxide-carbon nanotube-chitosan film, belonging to the technical field of air pollution treatment. Background technique [0002] Chitosan and its derivatives have good flocculation and clarification effects. As a clarifying agent for beverages, it can quickly flocculate suspended matter, naturally precipitate, and increase the yield of the original solution; in the extract of traditional Chinese medicine, large molecular proteins, tannic acid and pectin can be easily removed with chitosan solution and refined The active ingredients of traditional Chinese medicine with high purity are produced; the adsorption of chitosan is used to have a good effect in water purification. [0003] Titanium dioxide is a photocatalytic material with excellent performance. The photocatalytic material can generate free electrons and holes under ultraviolet irradiation, and can oxidize and decompose organic compo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/24B01J20/28B01J20/30B01D53/86B01D53/44C02F1/32C02F1/72
CPCB01D53/8687B01D2255/20707B01D2255/802B01D2257/708B01D2258/06B01J20/06B01J20/205B01J20/24B01J20/28033B01J2220/46C02F1/32C02F1/725C02F2303/02C02F2303/04C02F2305/10Y02A50/20
Inventor 周文婷罗超何运良
Owner WUHAN QIANRUITAI ENVIRONMENT TECH CO LTD
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