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A kind of preparation method of sponge nickel-based photocatalytic composite material

A composite material, sponge nickel-based technology, applied in the direction of catalyst activation/preparation, chemical instruments and methods, water treatment of special compounds, etc., can solve the problems of low photocatalytic efficiency, catalytic activity of photocatalytic materials, catalytic stability and reusable performance Can not meet the problems such as to achieve the effect of enhanced light absorption capacity, excellent photocatalytic efficiency, and avoiding low light intensity

Active Publication Date: 2021-02-02
NORTH CHINA UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the photocatalytic efficiency of photocatalytic materials used for photocatalytic treatment of dye wastewater is low, and the catalytic activity, catalytic stability and reusability of photocatalytic materials cannot meet the technical requirements of large-scale dye wastewater photocatalytic treatment.

Method used

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  • A kind of preparation method of sponge nickel-based photocatalytic composite material
  • A kind of preparation method of sponge nickel-based photocatalytic composite material
  • A kind of preparation method of sponge nickel-based photocatalytic composite material

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preparation example Construction

[0029] refer to figure 1 , the invention provides a method for preparing a sponge nickel-based photocatalytic composite material, comprising the following steps:

[0030] Step [1] Gadolinium doping of phosphotungstic acid specifically includes the following operations:

[0031] Add phosphotungstic acid, gadolinium nitrate hexahydrate, and sodium hydrogen tartrate into deionized water to form phosphotungstic acid with a concentration of 40-110g / L, gadolinium nitrate hexahydrate with a concentration of 250-520mg / L, and sodium hydrogen tartrate with a concentration of 130-190g / L reaction solution, stirred for 10-25 minutes, then heated up to 80-120°C, reacted for 16-25 hours and evaporated to obtain a solid phase, washed with ethanol for 4 times, at 50-70°C Vacuum drying for 5-8 hours to prepare gadolinium-doped phosphotungstic acid.

[0032] Step [2] Gadolinium-doped phosphotungstic acid complexation reaction to form a gadolinium-doped phosphotungstic acid complex, which spec...

Embodiment 1

[0041] Preferred Embodiment 1 of the present invention provides a method for preparing a sponge nickel-based photocatalytic composite material, comprising the following steps:

[0042] Step [1] Gadolinium doping of phosphotungstic acid specifically includes the following operations:

[0043] Add phosphotungstic acid, gadolinium nitrate hexahydrate, and sodium hydrogen tartrate into deionized water to form a reaction solution with a concentration of phosphotungstic acid of 60 g / L, a concentration of gadolinium nitrate hexahydrate of 510 mg / L, and a concentration of sodium hydrogen tartrate of 140 g / L. Stir for 15 minutes, then raise the temperature to 90°C, react for 18 hours and evaporate water to obtain a solid phase, wash the obtained solid phase with ethanol 4 times, and vacuum dry at 60°C for 7 hours to obtain gadolinium-doped phosphotungstic acid.

[0044] Step [2] Gadolinium-doped phosphotungstic acid complexation reaction to form a gadolinium-doped phosphotungstic acid co...

Embodiment 2

[0075] Preferred embodiment 2 of the present invention provides a method for preparing a sponge nickel-based photocatalytic composite material, comprising the following steps:

[0076] Step [1] Gadolinium doping of phosphotungstic acid specifically includes the following operations:

[0077] Add phosphotungstic acid, gadolinium nitrate hexahydrate, and sodium hydrogen tartrate into deionized water to form a reaction solution with a concentration of phosphotungstic acid of 80 g / L, a concentration of gadolinium nitrate hexahydrate of 320 mg / L, and a concentration of sodium hydrogen tartrate of 155 g / L. Stir for 18 minutes, then raise the temperature to 85°C, react for 22 hours and evaporate water to obtain a solid phase, wash the obtained solid phase with ethanol 4 times, and vacuum dry at 60°C for 5 hours to obtain gadolinium-doped phosphotungstic acid.

[0078] Step [2] Gadolinium-doped phosphotungstic acid complexation reaction to form a gadolinium-doped phosphotungstic acid ...

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Abstract

The invention provides a method for preparing a sponge nickel-based photocatalytic composite material, comprising the following steps: step [1] gadolinium doping of phosphotungstic acid; step [2] complexation reaction of gadolinium doped phosphotungstic acid to form gadolinium doped Heterophosphotungstic acid complex; step [3] loading of gadolinium-doped phosphotungstic acid complex on FDU12 molecular sieve; step [4] loading of gadolinium-doped phosphotungstic acid complex FDU12 molecular sieve on sponge nickel matrix deposition. The photocatalytic composite material prepared by the method has excellent photocatalytic efficiency, and has excellent catalytic activity, catalytic stability and reusable performance for organic dye degradation of dye wastewater.

Description

technical field [0001] The invention relates to the field of dye wastewater photocatalytic materials, in particular to a method for preparing a sponge nickel-based photocatalytic composite material. Background technique [0002] Dye wastewater is the organic wastewater that needs to be mainly treated in my country at present. It contains harmful substances such as benzene rings, aromatic amines, azo groups, aromatic compounds, etc., and these substances have high stability and are difficult to decompose naturally. cause serious harm. [0003] Traditional dye wastewater treatment methods include flocculation, adsorption, electrochemical oxidation, biodegradation and other methods. Compared with these traditional dye wastewater treatment methods, the dye wastewater photocatalytic method uses light energy to degrade dye wastewater pollutants into H through catalytic materials. 2 O.CO 2 It has the advantages of energy saving, green and high efficiency, photocatalytic degradati...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J31/22B01J27/188B01J35/00B01J37/34C02F1/30C02F101/30
CPCB01J27/188B01J37/348B01J31/2217C02F1/30C02F2305/10C02F2101/308B01J35/39
Inventor 赵明胡广宇
Owner NORTH CHINA UNIVERSITY OF TECHNOLOGY