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Photocatalyst LiCu2V3O10 in response to visible light and preparation method thereof

A photocatalyst, visible light technology, applied in chemical instruments and methods, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc., can solve the problem of limited types of photocatalysts, narrow spectral response range, light conversion Low efficiency and other problems, to achieve the effect of low cost, wide spectral response range and high light conversion efficiency

Inactive Publication Date: 2014-10-01
GUILIN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Although photocatalysis research has been carried out for several years, the types of photocatalysts with visible light response reported are still very limited, and there are still problems such as low photoconversion efficiency, poor stability and narrow spectral response range, so the research and development of new photocatalysts with Efficient photocatalysts responsive to visible light are highly desirable

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] (1) 99.9% analytically pure chemical raw material Li 2 CO 3 , CuO and V 2 o 5 , by LiCu 2 V 3 o 10 Chemical formula weighing ingredients.

[0020] (2) Mix the raw materials prepared in step (1), put them into a ball mill jar, add zirconia balls and distilled water, ball mill for 8 hours, mix and grind until fine, take it out and dry it, pass through a 200-mesh sieve.

[0021] (3) Pre-fire the uniformly mixed powder in step (2) at 650°C, keep it warm for 6 hours, cool it down to room temperature naturally, and then use a ball mill to pulverize the average particle diameter to be smaller than 2μm, that is, LiCu 2 V 3 o 10 powder.

[0022] The prepared photocatalyst, under the irradiation of visible light with a wavelength greater than 420nm, can remove 97.5% of methyl orange in 60 minutes.

Embodiment 2

[0024] (1) 99.9% analytically pure chemical raw material Li 2 CO 3 , CuO and V 2 o 5 , by LiCu 2 V 3 o 10 Chemical formula weighing ingredients.

[0025] (2) Mix the raw materials prepared in step (1), put them into a ball mill jar, add zirconia balls and distilled water, ball mill for 8 hours, mix and grind until fine, take it out and dry it, pass through a 200-mesh sieve.

[0026] (3) Pre-fire the uniformly mixed powder in step (2) at 680°C, keep it warm for 6 hours, cool it down to room temperature naturally, and then use a ball mill to pulverize the average particle diameter to be smaller than 2μm to obtain LiCu 2 V 3 o 10 powder.

[0027] The prepared photocatalyst has a methyl orange removal rate of 99.0% in 60 minutes under the irradiation of visible light with a wavelength greater than 420nm.

Embodiment 3

[0029] (1) 99.9% analytically pure chemical raw material Li 2 CO 3 , CuO and V 2 o 5 , by LiCu 2 V 3 o 10 Chemical formula weighing ingredients.

[0030] (2) Mix the raw materials prepared in step (1), put them into a ball mill jar, add zirconia balls and distilled water, ball mill for 8 hours, mix and grind until fine, take it out and dry it, pass through a 200-mesh sieve.

[0031] (3) Pre-fire the uniformly mixed powder in step (2) at 700°C, keep it warm for 6 hours, cool it down to room temperature naturally, and then use a ball mill to pulverize the average particle diameter to be smaller than 2 μm to obtain LiCu 2 V 3 o 10 powder.

[0032] The prepared photocatalyst can remove 98.2% of methyl orange in 60 minutes under the irradiation of visible light with wavelength greater than 420nm.

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Abstract

The invention discloses a photocatalyst LiCu2V3O10 in response to visible light and a preparation method thereof. The chemical formula of the photocatalyst is LiCu2V3O10. The invention also discloses a preparation method of the material. The obtained photocatalyst has the advantages of wide spectral response range, high light conversion efficiency, good stability and the like and has the functions of decomposing harmful chemical substances and organic biomass and sterilizing under the irradiation of visible light. Besides, the preparation method is simple, is low in synthesis temperature, is low in cost and is suitable for industrial production and application.

Description

technical field [0001] The invention relates to a photocatalyst LiCu responsive to visible light 2 V 3 o 10 The invention and a preparation method thereof belong to the field of inorganic photocatalytic materials. Background technique [0002] With the development of society and economy, people pay more and more attention to energy and ecological environment. Solving the problems of energy shortage and environmental pollution is an urgent need to achieve sustainable development, improve people's quality of life and ensure national security. [0003] Since the late 1970s, people have proposed the use of photocatalysts to decompose organic substances such as pesticides and odorous substances in water and the atmosphere, and self-cleaning of solid surfaces coated with photocatalysts. The principle of photocatalytic reaction is that after the photocatalyst absorbs photons higher than its bandgap energy, holes and electrons are generated, and these holes and electrons undergo ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/847
Inventor 唐莹方亮李洁
Owner GUILIN UNIVERSITY OF TECHNOLOGY
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