A method for preparing bismuth-doped nano-titanium dioxide photocatalyst

A nano-titanium dioxide and photocatalyst technology, applied in physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, chemical instruments and methods, etc., to achieve the effect of cheap raw material costs, multiple transfer channels, and simple steps

Active Publication Date: 2021-06-04
合肥龙之韵医药技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of preparation method, its preparation time is as long as more than 100 hours, and the average pore diameter of the co-doped nano-titanium dioxide obtained at last is 9-10nm, and the final experimental measurement shows that compared with pure titanium dioxide, the co-doped nano-titanium dioxide is more optically The catalytic efficiency does not show a good difference, and the catalytic efficiency of the co-doped nano-titanium dioxide catalyst with a molar ratio of Zr:TiO2=8:100 is not as good as that of pure titanium dioxide.

Method used

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  • A method for preparing bismuth-doped nano-titanium dioxide photocatalyst

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Experimental program
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Effect test

Embodiment 1

[0027] At room temperature, transfer 1.5 ml of tetrabutyl titanate and 9 ml of absolute ethanol to beaker A with a pipette, and stir evenly with a magnetic stirrer. Take another beaker B, use a pipette to measure 10 ml of absolute ethanol, 1 ml of glacial acetic acid and 3 ml of deionized water into beaker B, and mix evenly with a magnetic stirrer. Then transfer 85 mg of bismuth nitrate pentahydrate to beaker B with an electronic balance, and stir it evenly with a magnetic stirrer. Slowly pour the mixture in beaker A into beaker B under magnetic stirring. After the whole mixture was continuously stirred by magnetic force for 40 minutes, it was transferred to a reaction kettle and left at 65° C. for 10 hours to form a sol-gel. Take out the above-mentioned generated sol-gel and put it into a beaker, under vigorous stirring, weigh 350 mg of polyethylene balls into the beaker. After stirring with a magnetic stirrer for 40 minutes, it was transferred to a reaction kettle and plac...

Embodiment 2

[0029] At room temperature, transfer 1.5 ml of tetrabutyl titanate and 9 ml of absolute ethanol to beaker A with a pipette, and stir evenly with a magnetic stirrer. Take another beaker B, transfer 10 ml of absolute ethanol, 1 ml of glacial acetic acid and 3 ml of deionized water into beaker B with a pipette, and mix evenly with a magnetic stirrer. Slowly pour the mixture in beaker A into beaker B under magnetic stirring. After continuing magnetic stirring for 30 minutes, the entire mixed solution was transferred to a reaction kettle, and left at 65° C. for 10 hours to form a sol-gel. Take out the above-mentioned generated sol-gel and put it into a beaker, under vigorous stirring, weigh 350 mg of polyethylene balls into the beaker. After stirring with a magnetic stirrer for 40 minutes, it was transferred to a reaction kettle and placed at 80° C. for 7 hours to form a gel. Finally, the gel prepared with polyethylene spheres as a template was placed in a muffle furnace and calc...

Embodiment 3

[0031]At room temperature, transfer 1.5 ml of tetrabutyl titanate and 9 ml of absolute ethanol to beaker A with a pipette, and stir evenly with a magnetic stirrer. Take another beaker B, use a pipette to measure 10 ml of absolute ethanol, 1 ml of glacial acetic acid and 3 ml of deionized water into beaker B, and mix evenly with a magnetic stirrer. Then weigh 43 mg of bismuth nitrate pentahydrate with an electronic balance and transfer it to the beaker B, and stir it evenly with a magnetic stirrer. Slowly pour the mixture in beaker A into beaker B under magnetic stirring. After continuing magnetic stirring for 30 minutes, the entire mixed solution was transferred to a reaction kettle, and left at 65° C. for 10 hours to form a sol-gel. Take out the above-mentioned generated sol-gel and put it into a beaker, under vigorous stirring, weigh 350 mg of polyethylene balls into the beaker. After stirring with a magnetic stirrer for 40 minutes, it was transferred to a reaction kettle ...

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Abstract

The invention discloses a method for preparing bismuth-doped nano-titanium dioxide photocatalyst. The preparation steps are: 1) take tetrabutyl titanate and absolute ethanol into a beaker, stir evenly, and prepare A mixed solution; 2) take absolute ethanol , glacial acetic acid and deionized water into the beaker, stir evenly, weigh bismuth nitrate pentahydrate into the beaker, stir evenly; 3) under stirring, transfer the A mixed solution to the beaker and stir to prepare the B mixed solution; 4 ) Transfer the mixed solution of B to the reaction kettle, and place it at 60-70°C for 10 hours to form a sol-gel; 5) Take out the sol-gel and put it in a beaker, take polyethylene balls into the beaker and stir, then transfer to the reaction 6) Place the gel in a muffle furnace and calcinate it at 600°C in an oxygen environment to obtain a nano-titanium dioxide photocatalyst. The preparation method has simple steps, convenient operation, short time consumption, no pollution in the preparation process, and cheap and easy-to-obtain raw materials.

Description

technical field [0001] The invention belongs to the technical field of nano-titanium dioxide catalysts, and in particular relates to a method for preparing bismuth-doped nano-titanium dioxide photocatalysts. Background technique [0002] TiO 2 , the Chinese name is titanium dioxide, which is a cheap and efficient semiconductor material. In recent years, it has attracted widespread attention due to its excellent properties such as good chemical stability, thermal stability, non-toxicity, and superhydrophilicity. It is widely used in materials such as photocatalysts, self-cleaning glass, sunscreen coatings and inks, and can be used in the aerospace industry and lithium batteries. Because it can be used to reduce environmental pollution and improve energy shortages, TiO 2 The application in the field of photocatalysis has been paid more and more attention. But because pure TiO 2 The energy bandgap is wide (3.2 eV), and it can only absorb ultraviolet light with a relatively...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/18B01J35/00B01J35/02B01J35/08B01J35/10B01J37/08B01J37/03
CPCB01J23/18B01J35/004B01J35/023B01J35/08B01J35/10B01J37/0018B01J37/036B01J37/038
Inventor 毛辉何海华蒋伟华刘振香褚旅云周福富许海峰
Owner 合肥龙之韵医药技术有限公司
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