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A kind of preparation method of tantalum doped bismuth oxychloride powder

A technology of bismuth oxychloride and powder is applied in the field of photocatalytic materials to achieve the effects of wide source of raw materials, good dispersibility and significant degradation

Active Publication Date: 2021-11-16
XIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still relatively few reports on the co-doping of metal ions and non-metal ions. Therefore, it is particularly important to develop a metal ion-doped BiOCl material with high degradation efficiency for organic pollutants such as dyes under visible light.

Method used

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  • A kind of preparation method of tantalum doped bismuth oxychloride powder
  • A kind of preparation method of tantalum doped bismuth oxychloride powder
  • A kind of preparation method of tantalum doped bismuth oxychloride powder

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preparation example Construction

[0020] The invention relates to a preparation method of tantalum-doped bismuth oxychloride powder. The tantalum-doped bismuth oxychloride powder is prepared by a one-step hydrothermal method of bismuth nitrate pentahydrate, tantalum chloride and an organic solvent. Specifically follow the steps below:

[0021] Step 1: Weigh bismuth nitrate pentahydrate and tantalum chloride at a molar ratio of 1:1-3, add them to organic solvents for dissolution, and disperse evenly by ultrasonication for 15-30 minutes.

[0022] The mass-volume ratio of bismuth nitrate pentahydrate to the organic solvent is 0.02-0.04 g / ml, and the mass-volume ratio of the tantalum chloride to the organic solvent is 0.004-0.006 g / ml.

[0023] The organic solvent is any one of ethylene glycol, ethanol, glycerol, and isopropanol.

[0024] Step 2: Add the two solutions into a polytetrafluoroethylene high-pressure reaction kettle, stir and mix evenly, and place in an oven, heat at 120-180°C for 10-14 hours for hydr...

Embodiment 1

[0027] Weigh bismuth nitrate pentahydrate and tantalum chloride according to the molar ratio of 1:1, add them to ethylene glycol respectively, and ultrasonically dissolve them completely for 15 minutes. The mass-volume ratio of bismuth nitrate pentahydrate and organic solvent is 0.02g / ml The mass volume ratio of tantalum oxide to organic solvent is 0.004g / ml. Then, the bismuth nitrate pentahydrate and the tantalum chloride solution were mixed in a clean polytetrafluoroethylene autoclave lining under strong magnetic stirring, and the mixed solution was stirred strongly magnetically for 30 minutes. Finally, cover the high-pressure reaction kettle with the uniform mixed solution with a matching stainless steel shell, move it into an oven and keep it warm at 160°C for 12 hours for hydrothermal reaction. After air-cooling in the furnace, the solid-liquid mixture was centrifuged and washed three times with deionized water and absolute ethanol, and then dried in an oven at 50°C for 1...

Embodiment 2

[0033] Weigh bismuth nitrate pentahydrate and tantalum chloride according to the molar ratio of 1:2, add them to ethylene glycol respectively, and ultrasonically dissolve them completely for 20 minutes. The mass-volume ratio of bismuth nitrate pentahydrate and organic solvent is 0.03g / ml The mass volume ratio of tantalum oxide to organic solvent is 0.005g / ml. Then, bismuth nitrate pentahydrate and tantalum chloride solution were mixed in a clean polytetrafluoroethylene autoclave lining under strong magnetic stirring, and the mixed solution was stirred strongly magnetically for 25 minutes. Finally, cover the high-pressure reaction kettle with the uniform mixed solution with a matching stainless steel shell, move it into an oven and keep it warm for 12 hours at 150°C for hydrothermal reaction. After air-cooling in the furnace, the solid-liquid mixture was centrifuged and washed three times with deionized water and absolute ethanol respectively, and then dried in an oven at 55°C ...

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Abstract

The invention discloses a preparation method of tantalum-doped bismuth oxychloride powder. Bismuth nitrate pentahydrate and tantalum chloride are respectively dissolved in an organic solvent, and then the two solutions are mixed for hydrothermal reaction, and washed and dried after the reaction is completed. , that is, tantalum-doped bismuth oxychloride powder is obtained. The invention utilizes common green raw materials to modify BiOCl through a hydrothermal method to prepare tantalum-doped bismuth oxychloride powder. The obtained bismuth oxychloride powder can not only achieve visible light response, but also has good dispersion and uniform size. It has excellent photocatalytic activity and has a remarkable effect on the degradation of organic pollutants such as dyes.

Description

technical field [0001] The invention belongs to the technical field of photocatalytic materials, and in particular relates to a preparation method of tantalum-doped bismuth oxychloride powder. Background technique [0002] Photocatalytic technology is a green technology with important application prospects in the fields of energy and the environment. Under the irradiation of light, organic pollutants can be completely degraded into carbon dioxide and water. At the same time, the photocatalytic material itself has no loss. Century's revolutionary breakthrough in the field of environmental purification, known as "the most ideal environmental purification technology in the world today". [0003] BiOCl photocatalyst has become a research hotspot in the past ten years because of its special layered structure. Compared with traditional photocatalyst TiO 2 Compared to its [Bi 2 o 2 ] 2+ The lamellar structure formed by the alternating arrangement of layers and double-layer Cl ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/06
CPCB01J27/06B01J35/39
Inventor 孙少东陶莎莎梁淑华崔杰杨卿
Owner XIAN UNIV OF TECH
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