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One-dimensional nanometer titania photocatalyst with mica serving as support and preparation method thereof

A nano-titanium dioxide, photocatalyst technology, applied in physical/chemical process catalysts, chemical instruments and methods, chemical/physical processes, etc., can solve the problems of poor dispersibility, easy dispersion, difficult recovery, etc. Surface area, the effect of reducing the agglomeration effect

Inactive Publication Date: 2013-04-03
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] In the present invention, nano-TiO 2 Coating on the surface of mica forms a nanoparticle film, and further grows into one-dimensional nano-TiO by hydrothermal treatment 2 , to achieve nano-TiO 2 Loading on inorganic non-metallic lamellar minerals solves the problems of poor dispersion and difficult recycling. It is a new composite nano-photocatalyst with high photocatalytic activity, easy to disperse and easy to recycle.

Method used

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  • One-dimensional nanometer titania photocatalyst with mica serving as support and preparation method thereof
  • One-dimensional nanometer titania photocatalyst with mica serving as support and preparation method thereof
  • One-dimensional nanometer titania photocatalyst with mica serving as support and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0029] Weigh 15g of 300-100mesh muscovite into a 500ml beaker, add 500ml of distilled water to prepare a suspension, stir and heat to 85°C, add 50ml of HCl solution with a mass concentration of 35% and continue stirring for 30min, wait until the temperature drops to 60°C At ℃, wash repeatedly with distilled water and absolute ethanol, and filter with suction until there is no Cl in the filtrate. - (using 0.1mol·L -1 AgNO 3 solution test), vacuum-dried to obtain pretreated mica for subsequent use.

[0030] Weigh 6g of pretreated mica in a beaker, add 300ml of distilled water to prepare a suspension, heat and stir in a water bath to 80°C, adjust the pH value to 2-2.5 with 1mol / L hydrochloric acid solution, and then quickly add 40g of urea (neutralization 0.1mol / L titanium tetrachloride solution (prepared under ice-water bath environment) dropwise at the same time of 250ml, the rate of addition is controlled at 1ml / min, after the titanium tetrachloride solution is all dripped, ...

Embodiment 2

[0033] Weigh 15g of 300-100mesh muscovite into a 500ml beaker, add 500ml of distilled water to prepare a suspension, stir and heat to 85°C, add 50ml of HCl solution with a mass concentration of 35% and continue stirring for 30min, wait until the temperature drops to 60°C At ℃, wash repeatedly with distilled water and absolute ethanol, and filter with suction until there is no Cl in the filtrate. - (using 0.1mol·L -1 AgNO 3 solution test), vacuum-dried to obtain pretreated mica for subsequent use.

[0034] Weigh 6g of pretreated mica in a beaker, add 300ml of distilled water to prepare a suspension, heat and stir in a water bath to 80°C, adjust the pH value to 2-2.5 with 1mol / L hydrochloric acid solution, and then quickly add 40g of urea (neutralization 0.1mol / L titanium tetrachloride solution (prepared under ice-water bath environment) dropwise at the same time of 250ml, the rate of addition is controlled at 1ml / min, after the titanium tetrachloride solution is all dripped, ...

Embodiment 3

[0037] Weigh 15g of 300-100mesh muscovite into a 500ml beaker, add 500ml of distilled water to prepare a suspension, stir and heat to 85°C, add 50ml of HCl solution with a mass concentration of 35% and continue stirring for 30min, wait until the temperature drops to 60°C At ℃, wash repeatedly with distilled water and absolute ethanol, and filter with suction until there is no Cl in the filtrate. - (using 0.1mol·L -1 AgNO 3 solution test), vacuum-dried to obtain pretreated mica for subsequent use.

[0038] Weigh 6g of pretreated mica in a beaker, add 300ml of distilled water to prepare a suspension, heat and stir in a water bath to 80°C, adjust the pH value to 2-2.5 with 1mol / L hydrochloric acid solution, and then quickly add 40g of urea (neutralization 0.1mol / L titanium tetrachloride solution (prepared under ice-water bath environment) dropwise at the same time of 250ml, the rate of addition is controlled at 1ml / min, after the titanium tetrachloride solution is all dripped, ...

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Abstract

The invention discloses a one-dimensional nanometer titania photocatalyst with the mica serving as a support and a preparation method thereof. The composite photocatalyst is formed by wrapping a one-dimensional nanometer titania film by adopting the laminar mica as the support; the mica support is of a laminar structure, and the laminate is about 50 to 150 microns in diameter and 0.5 to 3 microns in thickness; the one-dimensional nanometer TiO2 film is about 0.5 to 2 microns in thickness; and the TiO2 is of a one-dimensional nanometer structure. The composite photocatalyst is easily dispersed in a liquid medium and recycled, is relatively high in reactivity, can be used for realizing the purpose of effectively removing the organic pollutant in the water, and has a wide application prospect in water purification.

Description

1. Technical field [0001] The invention relates to the technical field of inorganic nanomaterials, in particular to a one-dimensional nano-TiO loaded on the surface of mica 2 Preparation method of composite photocatalyst. 2. Background technology [0002] Water resources are the key resources for human production and life, but nowadays, the ecological environment has been severely damaged and water bodies are seriously polluted. The protection of water resources and the control of water pollution have become the most concerned issues in modern society. China is a country with severe drought and water shortage. The total amount of fresh water resources is 2.8 trillion cubic meters, accounting for 6% of global water resources, but the per capita is only 2,200 cubic meters, making it one of the countries with the poorest per capita water resources in the world. [0003] According to relevant monitoring, a large amount of industrial and domestic sewage is directly discharged i...

Claims

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Application Information

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IPC IPC(8): B01J21/16
Inventor 吕珺徐光青吴玉程郑治祥何早阳周嵩
Owner HEFEI UNIV OF TECH
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