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Aurivillius type lead-containing layered perovskite catalyst as well as preparation method and application thereof

A perovskite and catalyst technology, applied in the field of photocatalysis of environmental nanomaterials, can solve the problems of microstructure regulation and achieve high photocatalytic conversion activity

Inactive Publication Date: 2021-06-18
GUILIN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But so far, there are no relevant reports on the microstructure regulation and photocatalysis of Aurivillius-type lead-containing layered perovskite catalysts in inorganic alkali metal molten salts.

Method used

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  • Aurivillius type lead-containing layered perovskite catalyst as well as preparation method and application thereof
  • Aurivillius type lead-containing layered perovskite catalyst as well as preparation method and application thereof
  • Aurivillius type lead-containing layered perovskite catalyst as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0075] Step 1: Preparation of the first mixture

[0076] According to the molar ratio of 2: 4: 5, it is accurately weighed, and the gobium oxide and titanium dioxide P25 powder are accurately weighed. First, the weighing lead is placed in a mortar, grinding 25 min to 30 min, grinding to a particle sensing and obtaining a fine powder, resulting in a levenetic leading powder;

[0077] The weighing cerium oxide is placed in a mortar, grinding 30 min to 50 min, grinding the particle sensing and obtaining a fine powder, then added to the above-mentioned oxide powder, mixing uniform, continued to ground 30 min-60min, grinding The particle feels and obtains a fine powder to obtain a mixture of cerium oxide powder and a lead powder;

[0078] The weighing titanium dioxide P25 powder was placed in a mortar, grinding 18 min to 20 min, grounded to a particle sensing and obtained a fine powder, and then added to a mixture of the above-mentioned cerium oxide powder and a lead powder, mixed, mix...

Embodiment 2

[0092] Step 1: Preparation of the first mixture

[0093] According to the molar ratio of 2: 4: 5, it is accurately weighed, and the gobium oxide and titanium dioxide P25 powder are accurately weighed. The weighing lead is placed in a mortar, grinding 25 min to 30 min, grinding into a particle sensing and obtaining a fine powder. Therefore, the lead powder is obtained;

[0094] The weighing cerium oxide is placed in a mortar, grinding 30 min to 50 min, grinding the particle sensing and obtaining a fine powder, then added to the above-mentioned oxide powder, mixing uniform, continued to ground 30 min-60min, grinding The particle feels and obtains a fine powder to obtain a mixture of cerium oxide powder and a lead powder;

[0095] The weighing titanium dioxide P25 powder was placed in a mortar, grinding 18 min to 20 min, grounded to a particle sensing and obtained a fine powder, and then added to a mixture of the above-mentioned cerium oxide powder and a lead powder, mixed, mixed, co...

Embodiment 3

[0108] Step 1: Preparation of the first mixture

[0109] According to the molar ratio of 2: 4: 5, it is accurately weighed, and the gobium oxide and titanium dioxide P25 powder are accurately weighed. The weighing lead is placed in a mortar, grinding 25 min to 30 min, grinding into a particle sensing and obtaining a fine powder. Therefore, the lead powder is obtained;

[0110] The weighing cerium oxide is placed in a mortar, grinding 30 min to 50 min, grinding the particle sensing and obtaining a fine powder, then added to the above-mentioned oxide powder, mixing uniform, continued to ground 30 min-60min, grinding The particle feels and obtains a fine powder to obtain a mixture of cerium oxide powder and a lead powder;

[0111] The weighing titanium dioxide P25 powder was placed in a mortar, grinding 18 min to 20 min, grounded to a particle sensing and obtained a fine powder, and then added to a mixture of the above-mentioned cerium oxide powder and a lead powder, mixed, mixed, co...

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Abstract

The invention discloses an Aurivillius type lead-containing layered perovskite catalyst as well as a preparation method and an application thereof, and belongs to the technical field of photocatalysis of environmental nano materials. The preparation method of the Aurivillius type lead-containing layered perovskite catalyst comprises the following steps: preparing a first mixture; preparing a second mixture; and preparing the Aurivillius type lead-containing layered perovskite catalyst. The invention also discloses an Aurivillius type lead-containing layered perovskite catalyst and an application of the Aurivillius type lead-containing layered perovskite catalyst. According to the prepared Aurivillius type lead-containing layered perovskite catalyst, the material dimension and the optical property can be regulated and controlled, and the purification process of the Aurivillius type lead-containing layered perovskite catalyst on air pollutants is carried out in a gas-solid reaction, so that secondary pollution caused by lead can be avoided, and the Aurivillius type lead-containing layered perovskite catalyst is an efficient and stable lead-containing photocatalytic material with atmospheric pollutant treatment activity.

Description

Technical field [0001] The present invention relates to an AURIVILLIUS-containing lead-containing calcium titanium mine catalyst, a preparation method thereof, which belongs to the field of photocatalysis of environmental nanomaterials. Background technique [0002] Nitrogen oxide (NO x ) Is widely considered to be the most pollutant potential atmospheric pollutants in ecosystems, which seriously threatens human health and living environment. It is therefore effective to remove nitrogen oxides, or convert the nitrogen oxides into non-toxic nitrates to reduce their hazards, is a huge challenge in the environment. Developed a new visible light-driven photocatalytic material with environmental purification as a target, analog photosynthesis, rapidly realizing the efficient and depth purification of environmental pollutants under visible light, is current research hotspot. However, rapidly composite optical electron and holes reduce the quantum efficiency of the photocatalyst, which ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/18B01J35/10B01J35/02B01D53/86B01D53/62B01J35/00
CPCB01J23/18B01D53/864B01J35/00B01J35/30B01J35/61B01J35/39
Inventor 汪远昊热沙来提·海里里刘光焰宋子腾刘济沧赵未
Owner GUILIN UNIVERSITY OF TECHNOLOGY
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