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Preparation method of black titanium dioxide-based composite material

A technology of black titanium dioxide and composite materials, which is applied in the field of preparation of black titanium dioxide-based composite materials, can solve the problems of poor adhesion between the catalyst and its carrier, long catalytic degradation cycle, harsh preparation conditions, etc., and achieve remarkable degradation effect, catalytic The effect of short degradation cycle and simple preparation process

Active Publication Date: 2019-11-29
JINGDEZHEN CERAMIC INSTITUTE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to overcome the harsh preparation conditions of the black titanium dioxide-based catalyst in the prior art, low yield, poor adhesion between the catalyst and its carrier, long catalytic degradation cycle, and catalytic effect only under light conditions. problem, and then provide a preparation method of black titanium dioxide-based composite material

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  • Preparation method of black titanium dioxide-based composite material
  • Preparation method of black titanium dioxide-based composite material
  • Preparation method of black titanium dioxide-based composite material

Examples

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Embodiment 1

[0041] This embodiment provides a method for preparing a black titanium dioxide-based composite material, comprising the following steps:

[0042] 1) Weigh 43.96g of solid titanium dioxide powder and 56.04g of alumina powder, use deionized water as solvent, mix titanium dioxide powder, alumina powder and deionized water to form a slurry, and use a planetary ball mill to mill for 30min (wherein titanium dioxide powder and oxide The total weight of aluminum powder, the mass ratio of zirconia ball mill and deionized water is 1:3:0.5), then the slurry is dried, and the dried slurry ball mill is put into an alumina crucible, and then the loaded The crucible with the slurry was calcined at 1450°C for 2 hours to obtain aluminum titanate powder, and then the synthesized aluminum titanate powder was ball milled for 60 minutes and sieved through 200 meshes to obtain a particle size of 0.66 μm aluminum titanate powder;

[0043] 2) The aluminum titanate powder with a particle size of 0.6...

Embodiment 2

[0046] This embodiment provides a method for preparing a black titanium dioxide-based composite material, comprising the following steps:

[0047] 1) Weigh 43.96g of solid titanium dioxide powder and 56.04g of alumina powder, use deionized water as solvent, mix titanium dioxide powder, alumina powder and deionized water to form a slurry, and use a planetary ball mill to mill for 30min (wherein titanium dioxide powder and oxide The total weight of aluminum powder, the mass ratio of zirconia ball mill and deionized water is 1:3:0.5), then the slurry is dried, and the dried slurry ball mill is put into an alumina crucible, and then the loaded The crucible with the slurry was calcined at 1450°C for 2 hours to obtain aluminum titanate powder, and then the synthesized aluminum titanate powder was ball milled for 60 minutes and sieved through 200 meshes to obtain a particle size of 0.66 μm aluminum titanate powder;

[0048] 2) The aluminum titanate powder with a particle size of 0.6...

Embodiment 3

[0051] This embodiment provides a method for preparing a black titanium dioxide-based composite material, comprising the following steps:

[0052] 1) Weigh 43.96g of solid titanium dioxide powder and 56.04g of alumina powder, use deionized water as solvent, mix titanium dioxide powder, alumina powder and deionized water to form a slurry, and use a planetary ball mill to mill for 30min (wherein titanium dioxide powder and oxide The total weight of aluminum powder, the mass ratio of zirconia ball mill and deionized water is 1:3:0.5), then the slurry is dried, and the dried slurry ball mill is put into an alumina crucible, and then the loaded The crucible with the slurry was calcined at 1450°C for 2 hours to obtain aluminum titanate powder, and then the synthesized aluminum titanate powder was ball milled for 60 minutes and sieved through 200 meshes to obtain a particle size of 0.66 μm aluminum titanate powder;

[0053] 2) The aluminum titanate powder with a particle size of 0.6...

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Abstract

The invention relates to the technical field of black titanium dioxide-based composite materials, and in particular relates to a preparation method of a black titanium dioxide-based composite material. The preparation method of the black titanium dioxide- based composite material comprises the following steps of: heating and decomposing aluminum titanate in an oxygen-free environment to obtain thealumina in-situ loaded black titanium dioxide based composite material. The black titanium dioxide-based composite material obtained by the preparation method has high catalytic activity under the condition of no illumination, also has good light absorption to visible light, has obvious and stable degradation effect to organic dyes, organic matters in domestic sewage and the like, does not causeadsorption and desorption phenomena, and is beneficial to promoting the application and development of photocatalytic water treatment technology.

Description

technical field [0001] The invention relates to the technical field of black titanium dioxide-based composite materials, in particular to a preparation method of black titanium dioxide-based composite materials. Background technique [0002] Titanium dioxide (TiO 2 ) has been widely used as a new generation of environmental purification materials. TiO 2 Its band gap is about 3.2eV, and its photocatalytic oxidation technology can only be exerted under the illumination conditions greater than the band gap energy. However, this part of the bandgap energy can only utilize less than 5% of the ultraviolet part of the solar spectrum, which causes the problem of low utilization efficiency of the solar spectrum. [0003] In 2011, Samuel Mao, a scientist from the Lawrence National Laboratory of the United States and the University of California, Berkeley, reported a method for preparing black nano-titanium dioxide (black titanium) at low temperature in "Science". The area has a go...

Claims

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Application Information

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IPC IPC(8): B01J21/06B01J37/08C02F1/30C02F101/30C02F101/32
CPCB01J21/063B01J37/088B01J37/0018C02F1/30C02F2101/308C02F2101/32C02F2305/10B01J35/39
Inventor 顾幸勇谭灵董伟霞罗婷
Owner JINGDEZHEN CERAMIC INSTITUTE
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