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Preparation method and application of sector hydroxyl zinc fluoride

A sector-shaped zinc hydroxyfluoride technology, which is applied in the field of preparation of sector-shaped zinc hydroxyfluoride catalysts, achieves good stability, is conducive to large-scale promotion, and has simple methods

Inactive Publication Date: 2016-10-26
NANJING UNIV OF INFORMATION SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Hydroxyzinc fluoride, as a new functional material, has rarely been reported in the field of photocatalysis

Method used

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  • Preparation method and application of sector hydroxyl zinc fluoride
  • Preparation method and application of sector hydroxyl zinc fluoride
  • Preparation method and application of sector hydroxyl zinc fluoride

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] 1) After mixing 30ml of water and 5ml of absolute ethanol, under stirring conditions, add 1.75mmol of zinc chloride and 21mmol of sodium hydroxide, stir for 30min,

[0020] 2) Add the mixed solution of step 1) into an autoclave lined with polytetrafluoroethylene, conduct a hydrothermal reaction at a constant temperature of 140°C for 12 hours, centrifuge and wash for 3 times, and dry at 60°C to obtain zinc oxide product.

[0021] 3) Take 35ml of water, and add the zinc oxide product obtained in step 2) under stirring conditions

[0022] 4) Weigh 1 mmol of zinc oxide product, add 4 mmol of ammonium fluoride, stir for 30 min,

[0023] 5) Add the mixed solution of step 4) into an autoclave lined with polytetrafluoroethylene, conduct a hydrothermal reaction at a constant temperature of 180°C for 24 hours, centrifuge and wash 3 times, and dry at 60°C to obtain zinc hydroxyfluoride product.

[0024] Depend on figure 1 It can be seen that the zinc hydroxyfluoride catalyst p...

Embodiment 2

[0029] 1) After mixing 30ml of water and 5ml of absolute ethanol, under stirring conditions, add 1.25mmol of zinc chloride and 17mmol of sodium hydroxide, stir for 30min,

[0030] 2) Add the mixed solution of step 1) into an autoclave lined with polytetrafluoroethylene, conduct a hydrothermal reaction at a constant temperature of 140°C for 12 hours, centrifuge and wash for 3 times, and dry at 60°C to obtain zinc oxide product.

[0031] 3) Take 35ml of water, and add the zinc oxide product obtained in step 2) under stirring conditions

[0032] 4) Weigh 1 mmol of zinc oxide product, add 4 mmol of ammonium fluoride, stir for 30 min,

[0033] 5) Add the mixed solution of step 4) into an autoclave lined with polytetrafluoroethylene, conduct a hydrothermal reaction at a constant temperature of 180°C for 24 hours, centrifuge and wash 3 times, and dry at 60°C to obtain zinc hydroxyfluoride product.

Embodiment 3

[0035] 1) After mixing 30ml of water and 5ml of absolute ethanol, under stirring conditions, add 2.5mmol of zinc chloride and 24mmol of sodium hydroxide, stir for 30min,

[0036] 2) Add the mixed solution of step 1) into an autoclave lined with polytetrafluoroethylene, conduct a hydrothermal reaction at a constant temperature of 140°C for 12 hours, centrifuge and wash for 3 times, and dry at 60°C to obtain zinc oxide product.

[0037] 3) Take 35ml of water, and add the zinc oxide product obtained in step 2) under stirring conditions

[0038] 4) Weigh 1 mmol of zinc oxide product, add 4 mmol of ammonium fluoride, stir for 30 min,

[0039] 5) Add the mixed solution of step 4) into an autoclave lined with polytetrafluoroethylene, conduct a hydrothermal reaction at a constant temperature of 180°C for 24 hours, centrifuge and wash 3 times, and dry at 60°C to obtain zinc hydroxyfluoride product.

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Abstract

The invention discloses a preparation method of and application of sector hydroxyl zinc fluoride. The preparation method includes: self-making zinc oxide, taking 35ml of water, adding 0.7-1.5mmol of the zinc oxide under a stirring condition, adding 3-6mmol of ammonium fluoride, stirring for 30 minutes, adding the mixed solution into a high-pressure kettle with a teflon lining, performing constant-temperature hydrothermal reaction at 180 DEG C for 24 hours, and centrifuging, washing and drying to obtain the hydroxyl zinc fluoride. The preparation method has the advantages that the method uses the self-made zinc oxide as the raw material to prepare the hydroxyl zinc fluoride, the novel-structured sector hydroxyl zinc fluoride is obtained, and the method is simple, low in cost, good in reproducibility and stability, capable of efficiently degrading methylene blue waste aqueous solution, high in catalytic activity and capable of achieving large-scale popularization favorably.

Description

technical field [0001] The invention belongs to the field of catalysts, and in particular relates to a preparation method of a fan-shaped hydroxyzinc fluoride catalyst. Background technique [0002] Utilizing the surface energy activation characteristics of semiconductor oxide materials under sunlight irradiation, organic pollutants can be effectively oxidized and decomposed. Compared with traditional environmental purification treatment methods, semiconductor photocatalysis technology has the advantages of mild reaction conditions, no secondary pollution, simple operation and significant degradation effect. TiO 2 It is one of the most common and most studied catalysts, but the photogenerated electron-hole pairs generated by it are easy to recombine, resulting in the inability of electrons and holes to migrate to the surface in time to participate in redox reactions, resulting in low photoconversion efficiency. Therefore, it is very meaningful to search for new photocataly...

Claims

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Application Information

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IPC IPC(8): C01G9/00B01J27/138
CPCB01J27/138C01G9/00
Inventor 滕飞杨豪
Owner NANJING UNIV OF INFORMATION SCI & TECH
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