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Preparation method of glass fiber titanium-dioxide-loaded composite material

A glass fiber, composite material technology, applied in chemical instruments and methods, chemical/physical processes, physical/chemical process catalysts, etc., can solve problems such as unfavorable practical applications, complex preparation methods, etc., to achieve low cost and improve photocatalytic efficiency. , to achieve the effect of large-scale production

Active Publication Date: 2013-12-11
XINJIANG TECHN INST OF PHYSICS & CHEM CHINESE ACAD OF SCI
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method generally uses titanate or titanate as a precursor to prepare nano-titanium dioxide. The obtained particles exist in spherical form, and then undergo multiple dipping-pulling-calcinations to obtain glass fibers loaded with photocatalysts. The preparation method is relatively complicated. not conducive to practical application

Method used

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  • Preparation method of glass fiber titanium-dioxide-loaded composite material
  • Preparation method of glass fiber titanium-dioxide-loaded composite material
  • Preparation method of glass fiber titanium-dioxide-loaded composite material

Examples

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Effect test

Embodiment 1

[0023] Add 0.01M ammonium nitrate to 100mL0.5M nitric acid solution and stir evenly to obtain a mixed solution, add 0.2M titanium source titanium trichloride to the mixed solution under ice bath conditions, and finally obtain a transparent homogeneous solution;

[0024] Add the obtained solution to 0.1g single fiber form A-glass fiber, raise the temperature to 70°C, react for 6 hours, adjust the pH value to 7 with urea as an alkaline reagent, and after aging for 12 hours, wash and dry to obtain a composite material ;

[0025] The obtained composite material is heated up to 600° C. at a temperature of 1° C. / minute in air, kept for 2 hours, and then heat-treated to obtain a glass fiber-supported nano-scale titanium dioxide composite material.

Embodiment 2

[0027] Add 1M ammonium chloride to 100mL of 0.01M hydrochloric acid solution and stir evenly to obtain a mixed solution. Add 0.5M titanium source ammonium fluorotitanate to the mixed solution under ice bath conditions to finally obtain a transparent homogeneous solution;

[0028] Add 2 g of E-glass fibers in the form of short fibers to the solution, raise the temperature to 120°C, and react for 1 hour, then adjust the pH value to 7 with an alkaline reagent as sodium hydroxide solution, and after aging for 12 hours, wash and dry. get composite materials;

[0029] The obtained composite material was heated in the air at a temperature of 5 °C / min to 300 °C, kept for 2 hours, and then heat-treated to obtain a glass fiber / titanium dioxide composite material with a regular helical structure. Its appearance and element composition are as follows: figure 2 with image 3 shown.

Embodiment 3

[0031] Add 3M ammonium sulfate to 100mL of 1M sulfuric acid solution and stir evenly to obtain a mixed solution. Add 0.4M titanium tetrachloride as a titanium source to the mixed solution under ice bath conditions to finally obtain a transparent and uniform solution;

[0032] Add 5g of C-glass fibers in bundled form to the solution, raise the temperature to 100°C, react for 5 hours, the reaction is complete, adjust the pH value to 7 with urea as an alkaline reagent, and after aging for 12 hours, wash and dry. get composite materials;

[0033] The obtained composite material was heated up to 200°C at a temperature of 2°C / min in the air, kept for 2 hours, and then heat-treated to obtain a glass fiber-loaded titanium dioxide composite material with a spherical structure. Its appearance is as follows: Figure 4 shown;

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Abstract

The invention provides a preparation method of a glass fiber titanium-dioxide-loaded composite material. According to the method, an organic or inorganic titanium compound is used as a titanium source and a glass fiber is used as a carrier to prepare a glass fiber titanium-dioxide-loaded nano grain composite material under an acidic condition through using a direct hydrolysis method; the shape controllability of glass fiber titanium-dioxide-loaded nano grains is realized by adjusting parameters of acid concentration, reaction time and the like of a reaction system. According to the method provided by the invention, the surface modification of the glass fiber is realized by using a one-step method; meanwhile, titanium dioxide with photocatalytic activity is uniformly loaded on the surface glass fiber; the method has the advantages of simplicity and convenience for operation, easiness of large-scale production and the like. The composite material has the characteristics of nano / micron multilayered-grade structure, large specific surface area, high catalytic performance and the like, and lays a foundation for the application to the fields of photocatalysis, antibiosis, phase-separation materials and the like.

Description

technical field [0001] The invention belongs to the field of environmental materials, and in particular relates to a preparation method of a glass fiber loaded titanium dioxide composite material with photocatalytic activity and renewable use. Background technique [0002] Semiconductor photocatalytic oxidation, as a new technology that can decompose organic matter into carbon dioxide and water under normal temperature and pressure without causing secondary pollution, has attracted the attention of researchers at home and abroad. Studies have found that the use of semiconductor photocatalysis can effectively degrade various organic pollutants in water and air, such as halogenated hydrocarbons, nitroaromatics, phenols, organic pigments, pesticides, surfactants, etc.; , nitrite, thiocyanate, etc. into non-toxic or low-toxic compounds; can also be used in antibacterial, deodorizing, air purification, self-cleaning materials and other fields. The semiconductor photocatalysts th...

Claims

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Application Information

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IPC IPC(8): B01J21/06
Inventor 马鹏程陈琳杨苏东
Owner XINJIANG TECHN INST OF PHYSICS & CHEM CHINESE ACAD OF SCI
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