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Preparation method of carbon fiber loaded titanium dioxide nanometer sheet

A titanium dioxide and nanosheet technology, which is applied in the field of preparation of carbon fiber-supported titanium dioxide nanosheets, can solve the problems of high cost, hidden dangers of production safety, strong volatility, corrosion and the like, achieves simple preparation method, solves recycling difficulties, and improves photocatalysis. active effect

Inactive Publication Date: 2013-04-24
吕晓莹 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the cost of preparing titanium dioxide using titanium metal sheets as a precursor is relatively high
At the same time, because hydrofluoric acid is highly volatile, corrosive, and highly toxic, it needs to be used with extreme caution, and its use as an industrial raw material is likely to bring hidden dangers to production safety

Method used

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  • Preparation method of carbon fiber loaded titanium dioxide nanometer sheet
  • Preparation method of carbon fiber loaded titanium dioxide nanometer sheet
  • Preparation method of carbon fiber loaded titanium dioxide nanometer sheet

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Add 3mL of butyl titanate, 15mL of concentrated hydrochloric acid and 15mL of deionized water into a 50mL reaction kettle lined with polytetrafluoroethylene, stir well, and then add 50mg of carbon fiber and 0.88g of sodium fluoroborate. The molar ratio of carbon fiber, titanium source, sodium fluoroborate, hydrochloric acid and deionized water is 1:2:2:22:200. The reaction kettle was placed at 180° C. for hydrothermal reaction for 12 hours. After the reaction is finished, the product can be prepared by washing and drying the carbon fiber-loaded titanium dioxide nanosheets.

[0027] figure 1 It is a field emission scanning electron microscope image of the carbon fiber-supported titanium dioxide nano-flakes prepared in Example 1 of the present invention. It can be seen from the figure that the titanium dioxide nano-flakes are uniformly loaded on the carbon fibers.

[0028] figure 2 It is the field emission scanning electron microscope image of the carbon fiber-loaded ...

Embodiment 2

[0032] Add 3mL of butyl titanate, 15mL of concentrated hydrochloric acid and 15mL of deionized water into a 50mL reactor lined with polytetrafluoroethylene, stir well, and then add 50mg of carbon fiber and 1.76g of sodium fluoroborate. The molar ratio of carbon fiber, titanium source, sodium fluoroborate, hydrochloric acid and deionized water is 1:2:4:22:200. The reaction kettle was placed at 180° C. for hydrothermal reaction for 12 hours. After the reaction is finished, the product can be prepared by washing and drying the carbon fiber-loaded titanium dioxide nanosheets.

[0033] Figure 5 It is a field emission scanning electron microscope of the carbon fiber-loaded titanium dioxide nano-flakes prepared in Example 2 of the present invention. It can be seen from the figure that the titanium dioxide nano-flakes are evenly loaded on the carbon fibers, and the side length is about 3.2 μm, and the thickness is about 303 nm. The calculated [001] surface exposure rate is about 61...

Embodiment 3

[0035] Add 3mL of butyl titanate, 15mL of concentrated hydrochloric acid and 15mL of deionized water into a 50mL reaction kettle lined with polytetrafluoroethylene, stir well, and then add 50mg of carbon fiber and 3.52g of sodium fluoroborate. The molar ratio of carbon fiber, titanium source, sodium fluoroborate, hydrochloric acid and deionized water is 1:2:8:22:200. The reaction kettle was placed at 180° C. for hydrothermal reaction for 12 hours. After the reaction is finished, the product can be prepared by washing and drying the carbon fiber-loaded titanium dioxide nanosheets.

[0036] Figure 6 It is the field emission scanning electron microscope image of the carbon fiber-loaded titanium dioxide nano-flakes prepared in Example 3 of the present invention. It can be seen from the figure that the titanium dioxide nano-flakes are uniformly loaded on the carbon fibers, with a side length of about 6.3 μm and a thickness of about 275 nm. The calculated [001] surface exposure r...

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Abstract

The invention relates to a preparation method of a carbon fiber loaded titanium dioxide nanometer sheet. The method comprises the following steps: uniformly stirring carbon fibers and a titanium source under an acidic condition; using fluoborate as a morphology control preparation, wherein the mol ratio of the carbon fibers, the titanium source, the fluoborate, hydrochloric acid and deionized water is 1:(1-5):(1-10):(10-100):(100-1000); placing a reaction kettle in a thermostat at the temperature of 150-200 DEG C; and reacting for 4-24 hours so as to obtain the carbon fiber loaded titanium dioxide nanometer sheet. Through adoption of the loaded photocatalyst, the recycling problem of the catalyst can be solved and the secondary pollution problem caused by nanoparticles can be effectively avoided. The preparation method of the carbon fiber loaded titanium dioxide nanometer sheet, provided by the invention, has the advantages of simplicity, good safety and good operability. The prepared carbon fiber loaded titanium dioxide nanometer sheet has a broad application prospect in the field of photocatalytic degradation of organic pollutants, dye sensitized solar cells and the like.

Description

technical field [0001] The invention relates to the field of photocatalysts, in particular to a method for preparing carbon fiber-supported titanium dioxide nanosheets. Background technique [0002] The application of photocatalytic technology in environmental science and new energy development is one of the hot topics at present. Among many photocatalysts, titanium dioxide (TiO 2 ) is recognized as the photocatalyst with the most development potential, and the commercialized Degussa P25 is widely used in practice. Due to the relatively large forbidden band width of titanium dioxide (anatase E g =3.2eV), it can only be excited by ultraviolet light with a wavelength less than 380nm, but ultraviolet light only accounts for 4-5% of sunlight. At the same time, the electrons and holes generated during the photocatalytic reaction are easily recombined, which directly leads to the reduction of photocatalytic activity. The currently prepared titanium dioxide catalysts are mainly...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J21/06B01J35/02
Inventor 吕晓莹王滨
Owner 吕晓莹
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