Visible-light-responsive vanadium-containing composite oxide photocatalyst Ba3Sn1-xZrxV4O15 and preparation method thereof

A ba3sn1-xzrxv4o15, composite oxide technology, applied in the field of inorganic photocatalytic materials, can solve the problems of limited photocatalyst types, achieve excellent catalytic performance, simple preparation method, and low cost

Inactive Publication Date: 2013-11-20
GUILIN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Currently, the types of photocatalysts with visible light response reported are still very limited, so it is necessary to research and develop new high-efficiency photocatalysts with visible light response.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] (1) 99.9% analytically pure chemical raw material BaCO 3 , SnO 2 and V 2 o 5 , press Ba 3 SnV 4 o 15 Chemical formula weighing ingredients.

[0018] (2) Mix the chemical raw materials prepared in step (1), put them into a ball mill jar, add zirconia balls and absolute ethanol, ball mill for 4 hours, mix and grind until fine, take it out and dry it, and pass through a 200-mesh sieve.

[0019] (3) Pre-fire the powder obtained in step (2) at 750°C, keep it warm for 6 hours, cool it down to room temperature naturally, and then use a ball mill to reduce the particle diameter to 2 μm, that is, the vanadium-containing composite oxide photocatalyst is obtained Ba 3 SnV 4 o 15 powder.

[0020] The prepared photocatalyst can remove 99.2% of methyl orange in 120 minutes under the irradiation of visible light with a wavelength greater than 420nm.

[0021]

Embodiment 2

[0023] (1) 99.9% analytically pure chemical raw material BaCO 3 , SnO 2 , ZrO 2 and V 2 o 5 , press Ba 3 sn 0.5 Zr 0.5 V 4 o 15 Chemical formula weighing ingredients.

[0024] (2) Mix the chemical raw materials prepared in step (1), put them into a ball mill jar, add zirconia balls and absolute ethanol, ball mill for 8 hours, mix and grind until fine, take it out and dry it, pass through a 200-mesh sieve.

[0025] (3) Pre-fire the powder obtained in step (2) at 800°C, keep it warm for 7 hours, cool it down to room temperature naturally, and then pulverize it with a ball mill to reduce the particle diameter to 2 μm, and then obtain a vanadium-containing composite oxide photocatalyst Ba 3 sn 0.5 Zr 0.5 V 4 o 15 powder.

[0026] The prepared photocatalyst can remove 98.7% of methyl orange in 120 minutes under the irradiation of visible light with a wavelength greater than 420nm.

[0027]

Embodiment 3

[0029] (1) 99.9% analytically pure chemical raw material BaCO 3 , ZrO 2 and V 2 o 5 , press Ba 3 ZrV 4 o 15 Chemical formula weighing ingredients.

[0030] (2) Mix the chemical raw materials prepared in step (1), put them into a ball mill jar, add zirconia balls and absolute ethanol, ball mill for 10 hours, mix and grind until fine, take it out and dry it, and pass through a 200-mesh sieve.

[0031] (3) Pre-fire the powder obtained in step (2) at 850°C, keep it warm for 8 hours, cool it down to room temperature naturally, and then pulverize it with a ball mill to reduce the particle diameter to 2 μm, and then obtain a vanadium-containing composite oxide photocatalyst Ba 3 ZrV 4 o 15 powder.

[0032] The prepared photocatalyst can remove 98.5% of methyl orange in 120 minutes under the irradiation of visible light with a wavelength greater than 420nm.

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Abstract

The invention discloses a visible-light-responsive vanadium-containing composite oxide photocatalyst Ba3Sn1-xZrxV4O15 and a preparation method thereof. The chemical composition formula of the vanadium-containing composite oxide photocatalyst is Ba3Sn1-xZrxV4O15 (0<=x<=1). The preparation method comprises the following steps: 1) weighing and preparing 99.9% analytically pure chemical raw materials BaCO3, SnO2, ZrO2- and V2O5 according to the chemical formula of Ba3Sn1-xZrxV4O15, wherein 0<=x<=1; 2) mixing the raw materials prepared in the step (1), putting in a ball milling tank, adding zirconium oxide spheres and anhydrous ethanol, performing ball milling for 4-10 hours, mixing, grinding, taking out, drying, and sieving with a 200-mesh sieve; and 3) presintering the powder obtained in the step (2) at 750-850 DEG C, keeping the temperature for 6-8 hours, naturally cooling to room temperature, and then pulverizing through a ball mill until the particle diameter is reduced to 2 mu m, thus obtaining the vanadium-containing composite oxide photocatalyst Ba3Sn1-xZrxV4O15 (0<=x<=1) powder. According to the invention, the preparation method is simple and low in cost; and the prepared photocatalyst has excellent catalytic property, and has the actions of decomposing harmful chemical substances and organic biomass and performing sterilization under the irradiation of visible light.

Description

technical field [0001] The invention relates to a visible light-responsive vanadium-containing composite oxide photocatalyst Ba 3 sn 1-x Zr x V 4 o 15 (0≤x≤1) and a preparation method, belonging to the field of inorganic photocatalytic materials. Background technique [0002] Environmental pollution is a matter of great concern to all countries in the world. It has led to the continuous decline in the quality of people's drinking water and industrial water sources, resulting in increasing air pollution, resulting in continuous destruction of the ecological environment, and posing a serious threat to human survival. In order to solve these problems, people control and control environmental pollution through various methods. [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. At p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/22
Inventor 苏聪学方亮向飞
Owner GUILIN UNIVERSITY OF TECHNOLOGY
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