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Hierarchical structure ZnO/Cu3(PO4)2 controllable wettability composite material and preparation method thereof

A hierarchical structure and composite material technology, applied in separation methods, chemical instruments and methods, metal material coating technology, etc., can solve problems such as low chemical stability and poor roughness of zinc oxide materials

Inactive Publication Date: 2018-10-02
YANSHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] ZnO photoresponsive reversible wettability materials have been widely reported, and most of the researches mainly focus on the wettability transition between superhydrophilicity and superhydrophobicity of different solid surfaces, but the roughness of a single zinc oxide material is poor, chemical low stability

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] a) Flower-like Cu 3 (PO 4 ) 2 Synthesis

[0022] A 100-mesh red copper mesh (copper content is 99.99%) was cleaned with HCl for 5 minutes under ultrasonic conditions, and then washed with deionized water for 5 minutes, and 1 mL of 0.15 M (NH 4 ) 2 S 2 o 8 and 0.80 mL of 1.50M K 2 HPO 4 The solution was reacted in a water bath at 70°C for 8 hours. After the reaction, the reacted copper mesh was washed 5 times with deionized water, dried at 80°C under vacuum for 1 hour, and the reacted copper mesh was baked at 300°C for 0.5h to obtain a surface of Flower-like Cu 3 (PO 4 ) 2 copper mesh;

[0023] b) Synthesis of ZnO / Cu 3 (PO 4 ) 2 copper mesh

[0024] Add 0.9mg Zn(CH 3 COO) 2 2H 2 The proportion of O was mixed with Zn(CH 3 COO) 2 2H 2 O was dissolved in ethanol, after cooling to room temperature, step a) pretreated copper grid was immersed in the solution for 3 minutes, dried in a vacuum oven at 60°C for 5 minutes, and then annealed at 250°C for 8 minu...

Embodiment 2

[0028] a) Flower-like Cu 3 (PO 4 ) 2 Synthesis

[0029] Clean the 100-mesh red copper mesh (copper content 99.99%) with HCl for 10 minutes under ultrasonic conditions, then wash it with deionized water for 15 minutes, add 1 mL of 0.15 mL of 0.20 M Na 2 S 2 o 8 and 0.85mL of 0.90M K 2 HPO 4 The solution was reacted in a water bath at 80°C for 9 hours. After the reaction, the reacted copper mesh was washed 8 times with deionized water, dried at 85°C under vacuum for 2 hours, and the reacted copper mesh was roasted at 350°C for 1.0h to obtain a flower surface. Cu-like 3 (PO 4 ) 2 Flower-shaped copper mesh;

[0030] b) Synthesis of ZnO / Cu 3 (PO 4 ) 2 copper mesh

[0031] Add 1.0mg Zn(CH 3 COO) 2 2H 2 The proportion of O was mixed with Zn(CH 3 COO) 2 2H 2 O was dissolved in ethanol, after cooling to room temperature, the pretreated copper grid in step a) was immersed in the solution for 4 minutes, dried in a vacuum oven at 70°C for 8 minutes, and then annealed a...

Embodiment 3

[0035] a) Flower-like Cu 3 (PO 4 ) 2 Synthesis

[0036] Clean the 200-mesh red copper mesh (copper content is 99.99%) with HCl for 15 minutes under ultrasonic conditions, and then wash it with deionized water for 12 minutes, add 1 mL containing 0.25 mL of K 2 S 2 o 8 and 0.75mL of 0.88M Na 2 HPO 4 The solution was reacted in a water bath at 90°C for 10 h. After the reaction, the reacted copper mesh was washed with deionized water for 6 times, dried under vacuum at 90°C for 2.5 hours, and the reacted copper mesh was fired at 400°C for 1.5 hours to obtain a flower-like copper mesh on the surface. 3 (PO 4 ) 2 Flower-shaped copper mesh;

[0037] b) Synthesis of ZnO / Cu 3 (PO 4 ) 2 copper mesh

[0038] Add 1.1mg Zn(CH 3 COO) 2 2H 2 The proportion of O was mixed with Zn(CH 3 COO) 2 2H 2 O was dissolved in ethanol, after cooling to room temperature, the pretreated copper grid in step a) was immersed in the solution for 5 minutes, then dried in a vacuum oven at 80°C...

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Abstract

The invention discloses a hierarchical structure ZnO / Cu3(PO4)2 controllable wettability composite material which has a copper phosphate flower-like and linear nano zinc oxide multilevel structure. A preparation method mainly comprises the steps: carrying out a reaction of a red copper mesh in a persulfate and monohydrogen phosphate solution, and then roasting to obtain a flower-like Cu3(PO4)2 copper mesh; immersing the copper mesh in a solution of Zn(CH3COO)2.2H2O and anhydrous ethanol, carrying out vacuum drying, and then annealing at the temperature of 250-350 DEG C for 8-20 min to produce ZnO seed crystals; and transferring a solution having addition of a zinc source and organic amine and the copper mesh coated with the ZnO seed crystals into a reaction kettle, heating to 60-100 DEG C,carrying out heat preservation for 5-15 h, then taking out the copper mesh from the reaction kettle, rinsing, then drying, to obtain a ZnO / Cu3(PO4)2 composite, placing the ZnO / Cu3(PO4)2 composite in adark place for 5-15 days, irradiating for 1-3 h under an ultraviolet condition, and thus obtaining the hierarchical structure ZnO / Cu3(PO4)2 controllable wettability composite material. The material has the advantages of controllable composition and structure, orderly internal structure, large surface roughness and stable chemical performance.

Description

technical field [0001] The invention belongs to the technical field of composite materials, in particular to a ZnO / Cu 3 (PO 4 ) 2 Composite materials and methods for their preparation. Background technique [0002] With the rapid economic and social development, various industrial production processes such as food processing, crude oil transportation, metallurgy and oil refineries will produce a large amount of oily sewage, resulting in serious oil pollution problems. Thus, green and effective oily wastewater treatment has become a global issue. In recent years, the graft polymerization method based on organic polymers has been widely used for surface modification to obtain wetting properties for oil-water separation. However, most polymer-based membranes have a very short lifetime due to the chemical instability of the polymer membrane, and the polymer membrane is also prone to clogging resulting in decreased water flux and weakened hydrophobicity, which is obviously no...

Claims

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Application Information

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IPC IPC(8): C23C22/05C23C18/12B82Y40/00B82Y30/00B01D17/022
CPCB01D17/0205B82Y30/00B82Y40/00C23C18/1216C23C18/1241C23C22/05
Inventor 李秋荣吕元飞冯双将王淑雪乔宇
Owner YANSHAN UNIV
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