Preparation for titanium dioxide-AP stainless steel net and application thereof in water body remediation

A technology for stainless steel mesh and water body restoration, which is applied in special compound water treatment, water pollutants, liquid separation, etc., can solve the secondary pollution of the environment, the threat of organic adhesive toxicity to human health and the environment, and affect the performance of adhesives and other issues to achieve the effect of high separation efficiency, excellent mechanical properties and chemical stability

Inactive Publication Date: 2018-10-19
NORTHWEST NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Nevertheless, most organic adhesives cannot bear the influence of external force and complex environment, and cause immeasurable secondary pollution to the environment, which greatly affects the performance of these adhesives and limits their scope of application.
Not only that, the toxicity of organic adhesives is also a great threat to human health and the environment
In addition, there are many organic dyes such as methylene blue, the presence of these organic dyes also increases the difficulty of water restoration
Therefore, from a practical point of view, it is still a challenge to find an underwater superoleophobic separation membrane with good mechanical durability and excellent separation ability for oil-in-water emulsions and capable of degrading organic pollutants under external stimuli. huge challenge

Method used

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  • Preparation for titanium dioxide-AP stainless steel net and application thereof in water body remediation
  • Preparation for titanium dioxide-AP stainless steel net and application thereof in water body remediation
  • Preparation for titanium dioxide-AP stainless steel net and application thereof in water body remediation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] (1) Treatment of stainless steel mesh: at room temperature, put the cut stainless steel mesh (mesh 2300 mesh, 2.5 cm × 2.5 cm) into a beaker, add an appropriate amount of acetone and put it in an ultrasonic cleaner for cleaning for 15 minutes, then take it out; then add an appropriate amount of Ethanol, ultrasonic cleaning for 15min, take out and dry;

[0042] (2) Preparation of aluminum phosphate binder: Take 7.52 g of aluminum hydroxide, 20 mL of commercially available 85% phosphoric acid, and 10 mL of distilled water, put them into a round bottom flask, heat the oil bath to 100 °C, stir for 3 h, and cool to room temperature That is, the aluminum phosphate binder (AP binder) is obtained (note: the prepared AP binder is liquid and all the aluminum hydroxide is reacted, so there is no need for separation and drying);

[0043] (3) TiO 2 - Preparation of AP suspension: take 2g of AP binder, dissolve in 5 mL of distilled water; then take 0.5g of TiO 2 The powder was disp...

Embodiment 2

[0050] (1) The processing of stainless steel mesh: with embodiment 1;

[0051] (2) Preparation of AP binder: take 7.36 g of aluminum hydroxide, 20.5 mL of commercially available 85% phosphoric acid, 10.5 mL of distilled water, and the others are the same as in Example 1;

[0052] (3) TiO 2 - Preparation of AP suspension: take 2.5g of AP binder, dissolve in 5 mL of distilled water; then take 0.525g of TiO 2 The powder was dispersed in 15 mL of ethanol, stirred separately for 30 min and mixed, and then stirred for another 30 min to mix evenly to obtain TiO 2 - AP suspension;

[0053] (4) TiO 2 -Preparation of AP stainless steel mesh: same as Example 1.

[0054] TiO 2 -Performance test of AP stainless steel mesh: basically the same as in Example 1.

Embodiment 3

[0056] (1) The processing of stainless steel mesh: with embodiment 1;

[0057] (2) Preparation of AP binder: Take 7.69 g of aluminum hydroxide, 20.5 mL of commercially available 85% phosphoric acid, 10 mL of distilled water, and the others are the same as in Example 1;

[0058] (3) TiO 2 - Preparation of AP suspension: take 2g of AP binder, dissolve in 5 mL of distilled water; then take 0.45g of TiO 2 The powder was dispersed in 15 mL of ethanol, stirred separately for 30 min and then mixed, and stirred for another 30 min to mix evenly to obtain TiO 2 - AP suspension;

[0059] (4) TiO 2 -Preparation of AP stainless steel mesh: same as Example 1.

[0060] TiO 2 -Performance test of AP stainless steel mesh: basically the same as in Example 1.

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Abstract

The invention discloses a preparation method for a TiO2-AP stainless steel net. The preparation method comprises the following steps: uniformly spraying suspension liquid containing TiO2 nanoparticlesand an aluminum phosphate binder on the surface of a stainless steel net, drying and solidifying, to obtain the TiO2-AP stainless steel net. The TiO2-AP stainless steel net has the excellent emulsionseparation capacity, aiming at oil-in-water emulsion containing a surfactant, separation efficiency is higher than 99.8%. The TiO2-AP stainless steel net still has 99.5% of the high separation efficiency even if 500 times of scratching tests are performed. The TiO2-AP stainless steel net further has the very good mechanical durability and chemical stability, and is capable of enduring more severeconditions, such as sand impact circulation, 24 hours of a solvent soaking test and ultrasonic wave treatment. In addition, the TiO2-AP stainless steel net is capable of efficiently degrading organicdye, and can be extensively applied to the water body remediation.

Description

technical field [0001] The present invention relates to a kind of TiO 2 -The preparation of AP stainless steel mesh is mainly used in water body restoration, such as separating oil-in-water emulsion and degrading organic pollutants, which belongs to the technical field of composite mesh materials and the field of water body restoration. technical background [0002] To date, the separation of emulsified oil-water mixtures remains a great challenge globally. Emulsified mixtures are more difficult to separate than free oil / water mixtures, especially in the presence of surfactants in real-life aqueous environments. Due to the large pore size of most superwetting materials, they can only separate immiscible oil / water mixtures, but are ineffective for oil / water emulsions. Not only that, most superhydrophobic or underwater superoleophobic materials have poor mechanical durability, and their micro-nano-scale roughness is usually easily and irreversibly damaged by external forces,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/30C02F1/40B05D7/14B05D7/24C02F101/30
CPCB05D7/14B05D7/24B05D2202/15C02F1/30C02F1/40C02F2101/30C02F2305/10
Inventor 李健龙一飞崔梦珂李谋吉郭常青
Owner NORTHWEST NORMAL UNIVERSITY
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