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Preparation method of NiO/ZrO2 nano-composite photocatalyst and application of catalyst

A photocatalyst and nanocomposite technology, applied in metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, chemical instruments and methods, etc., to achieve the effect of degradation treatment

Active Publication Date: 2021-06-25
合肥龙智机电科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, for the modification of nano-NiO to prepare ZrO 2 Research on composite photocatalysts is rarely reported

Method used

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  • Preparation method of NiO/ZrO2 nano-composite photocatalyst and application of catalyst
  • Preparation method of NiO/ZrO2 nano-composite photocatalyst and application of catalyst
  • Preparation method of NiO/ZrO2 nano-composite photocatalyst and application of catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] 5L 0.2mol / L NaBH 4 The solution was added dropwise to 5L of 0.1mol / L ZrOCl 2 ·8H 2 O solution forms a white sol, stir vigorously until a precipitate forms; then filter and wash until the filtrate is neutral, filter, and dry at 80°C for 6 hours; add the precipitate to 5L of 0.5mol / L (NH 4 ) 2 CO 3 solution and 0.9L 0.1mol / L Ni(NO 3 ) 2 ·6H 2 In the O solution, first stir for 20 minutes, then ultrasonically disperse for 20 minutes, let stand for 3 hours, then vacuum dry at 80°C for 8 hours, bake at 350°C for 3 hours, and grind to obtain NiO / ZrO 2 Nanocomposite photocatalysts. The mole fraction of Ni added is 15%.

[0034] The NiO / ZrO 2 Application of nanocomposite photocatalyst: prepare a p-methylene blue (MB) solution with a concentration of 60 mg / L as simulated wastewater, and mix NiO / ZrO 2 Nanocomposite photocatalyst added to MB solution, NiO / ZrO 2 The dosage of the nanocomposite photocatalyst is 0.6g / L; the degradation reaction occurs for 1.2h under the con...

Embodiment 2

[0036] 5L 0.2mol / L NaBH 4 The solution was added dropwise with 4L of 0.1mol / L ZrOCl 2 ·8H 2 O solution forms a white sol, stir vigorously until a precipitate forms; then filter and wash until the filtrate is neutral, filter, and dry at 90°C for 5 hours; add the precipitate to 2L of 0.5mol / L (NH 4 ) 2 CO 3 solution and 1L 0.1mol / L Ni(NO 3 ) 2 ·6H 2 In the O solution, first stir for 25 minutes, then ultrasonically disperse for 25 minutes, let stand for 2 hours, then vacuum dry at 85°C for 9 hours, roast at 380°C for 3 hours, and grind to obtain NiO / ZrO 2 Nanocomposite photocatalysts. Among them, the mole fraction of Ni added is 20%.

[0037] The NiO / ZrO 2 Application of nanocomposite photocatalyst: prepare a p-methylene blue (MB) solution with a concentration of 60 mg / L as simulated wastewater, and mix NiO / ZrO 2 Nanocomposite photocatalyst added to MB solution, NiO / ZrO 2 The dosage of the nanocomposite photocatalyst is 0.6g / L; the degradation reaction occurs for 1.5h ...

Embodiment 3

[0039] 6L 0.2mol / L NaBH 4 The solution was added dropwise with 4.5L of 0.2mol / L ZrOCl 2 ·8H 2 O solution forms a white sol, stir vigorously until a precipitate forms; then filter and wash until the filtrate is neutral, filter, and dry at 80°C for 6 hours; add the precipitate to 3L of 1.0mol / L (NH 4 ) 2 CO 3 solution and 1L 0.1mol / L Ni(NO 3 ) 2 ·6H 2 In the O solution, first stir for 30 minutes, then ultrasonically disperse for 20 minutes, let stand for 4 hours, then vacuum dry at 90°C for 8 hours, bake at 400°C for 2 hours, and grind to obtain NiO / ZrO 2 Nanocomposite photocatalysts. The mole fraction of Ni added is 10%.

[0040] The NiO / ZrO 2 Application of nanocomposite photocatalyst: prepare a p-methylene blue (MB) solution with a concentration of 60 mg / L as simulated wastewater, and mix NiO / ZrO 2 Nanocomposite photocatalyst added to MB solution, NiO / ZrO 2 The dosage of the nanocomposite photocatalyst is 0.6g / L; the degradation reaction occurs for 1.0h under the c...

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Abstract

The invention belongs to the technical field of photocatalysts, and particularly relates to a preparation method of a NiO / ZrO2 nano-composite photocatalyst and application of the catalyst. The preparation method comprises the following steps: adding a NaBH4 solution into a ZrOCl2.8H2O solution to form white sol, and performing stirring until a precipitate is generated; and performing filtering, washing and drying, adding into a (NH4)2CO3 solution and a Ni(NO3)2.6H2O solution, carrying out ultrasonic dispersion, drying, roasting, and grinding to obtain the NiO / ZrO2 nano composite photocatalyst. The NiO / ZrO2 nano-composite photocatalyst prepared by the preparation method disclosed by the invention is high in catalytic activity and good in dispersity. The NiO / ZrO2 nano-composite photocatalyst is added into organic wastewater, degradation reaction is carried out under the illumination condition, toxic and harmful substances can be directly degraded into water and carbon dioxide, the degradation rate is 99.8% or above, and therefore degradation treatment of organic matter in the organic wastewater is achieved.

Description

technical field [0001] The invention belongs to the technical field of photocatalysts, in particular to a NiO / ZrO 2 Preparation method of nanocomposite photocatalyst and application of catalyst. Background technique [0002] Printing and dyeing wastewater is one of the main sources of industrial wastewater in my country at present. It has deep color, many organic poisons, large discharge volume, difficult biodegradation, and high content of heavy metals. Physical, chemical, and biological methods are usually used for treatment, but the efficiency is low, the treatment is not thorough, and it is easy to produce secondary pollution, etc. Photocatalytic oxidation degradation of pollutants is a "green technology" developed in recent years. Under normal temperature and pressure, organic pollution sources can be completely degraded into carbon dioxide, water, etc. by using photocatalysts. The operation is simple, efficient, and has no secondary Pollution, it has great application...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/755C02F1/30C02F101/30
CPCB01J23/755C02F1/30C02F2305/10C02F2101/30B01J35/39Y02W10/37
Inventor 郭春芳郭风王莹莹
Owner 合肥龙智机电科技有限公司
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