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Preparation method of silane modified superhydrophobic TiO2 nanotube material

A silane modification and nanotube technology, applied in the field of superhydrophobicity, can solve the problems of complicated steps and easy peeling off of the modified layer, and achieve the effects of simple preparation process, low cost and mild reaction conditions

Inactive Publication Date: 2019-01-11
NANTONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current methods for preparing superhydrophobic materials have problems such as cumbersome steps and easy detachment of the modified layer.

Method used

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  • Preparation method of silane modified superhydrophobic TiO2 nanotube material
  • Preparation method of silane modified superhydrophobic TiO2 nanotube material

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preparation example Construction

[0022] A silane-modified TiO 2 A method for preparing a nanotube superhydrophobic material, comprising the following steps:

[0023] (1) Take (0.6-2) gTiO 2 Dissolve the nanoparticles in (60-180) mL (8-12) mol / L NaOH solution, (500-700W) ultrasonic for 0.5-1h, mechanically stir in the dark (300-500r / min) for 12-15h The solution is placed in a hydrothermal reaction kettle and reacted at 100-150°C for 24-48h; the reaction product is washed with distilled water until the pH is 7, and then acid-washed with (0.1-0.5) mol / L HCl until the pH of the upper clear layer is 1, and then rinsed with distilled water until the pH is neutral, and dried to obtain TiO 2 Nanotubes, protected from light;

[0024] (2) Take TiO 2 Add the nanotubes into the ethanol solution (2-10) mL with a mass concentration of perfluorooctyltriethoxysilane between 1% and 5%, and (500-700W) ultrasonically shake for 1-2h; add distilled water and undergo hydrolysis reaction Hydrophobic TiO can be obtained in 1-3h...

Embodiment 1

[0025] Embodiment 1 Silane modified TiO 2 Preparation of nanotube superhydrophobic materials

[0026] (1) Take 0.6g TiO 2 Nanoparticles and 60mL 12mol / L NaOH solution, 500W ultrasound for 1h, mechanical stirring (300r / min) in the dark for 15h, then put the above solution in a hydrothermal reaction kettle, hydrothermal reaction at 100°C for 24h; the reaction product was washed with distilled water to pH After it is 7, it is acid-washed with 0.5mol / L HCL until the pH of the upper layer is 1, then washed with distilled water until the pH is neutral, and dried at 150°C to obtain TiO 2 Nanotubes, protected from light;

[0027] (2) Take 0.3gTiO 2 Add nanotubes to 10mL 10g / L perfluorooctyl triethoxysilane and dissolve in 10mL ethanol, 500W ultrasonic vibration for 2h; add 5g distilled water, hydrolyze for 3h to get hydrophobized TiO 2 nanotube material.

Embodiment 2

[0028] Embodiment 2 Silane modified TiO 2 Preparation of nanotube superhydrophobic materials

[0029] (1) Weigh 1g TiO 2 Nanoparticles were dissolved in 80mL 8mol / L NaOH solution, ultrasonicated at 700W for 30min, and mechanically stirred in the dark (500r / min) for 12h, then the above solution was placed in a hydrothermal reaction kettle, and hydrothermally reacted at 150°C for 48h; the reaction product was washed with distilled water until After the pH is 7, pickle with 0.1mol / L HCL until the pH of the upper layer is 1, then rinse with distilled water until the pH is neutral, and dry the above product at 150°C to obtain TiO 2 Nanotubes, protected from light;

[0030] (2) Take 0.6gTiO 2 Add nanotubes to 10mL 10g / L perfluorooctyltriethoxysilane dissolved in 2mL ethanol, 700W ultrasonic vibration for 1h; add 2.5g distilled water, and hydrolyze for 1h to obtain hydrophobized TiO 2 nanotube material.

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Abstract

The invention provides a preparation method of a silane modified superhydrophobic TiO2 nanotube material, wherein the preparation method comprises the following steps: (1) taking TiO2 nanoparticles, dissolving in a NaOH solution, carrying out ultrasonic treatment, carrying out light-shielding mechanical stirring, then putting the solution into a hydrothermal reaction kettle, and carrying out a reaction; swashing the reaction product with distilled water to the pH of 7, then pickling until the pH of a supernatant is 1, then swashing with distilled water to the pH of 7, drying, preparing TiO2 nanotubes, and carrying out light-shielding preservation; and (2) taking the TiO2 nanotubes, adding to an ethanol solution of silane, and carrying out ultrasonic oscillation; and adding distilled water,carrying out hydrolysis reaction, and thus obtaining the hydrophobic TiO2 nanotube material. The modified TiO2 nanotubes have hydrophobic and oleophylic properties, are suitable for cellulose fiber fabrics, and have great application value in superhydrophobic fields such as self-cleaning, corrosion resistance, mildew resistance, ultraviolet resistance and oil-water separation fields.

Description

technical field [0001] The invention relates to the field of superhydrophobic technology, in particular to a silane-modified TiO 2 Preparation method of nanotube superhydrophobic material. Background technique [0002] Superhydrophobicity refers to a wettability in which the contact angle between a water droplet and a solid surface exceeds 150° and the rolling angle is less than 10°. Typical representatives in nature include: lotus leaf, rice leaf, etc. Due to the excellent properties of anti-wetting, anti-adhesion, self-cleaning, anti-corrosion, anti-icing, anti-fouling and anti-bacterial, fluid drag reduction, superhydrophobic surface has broad application potential in textile, aviation, construction and other fields. [0003] At present, there are many related patents on superhydrophobic materials. For example, in the Chinese invention patent "A transparent superhydrophobic material and its application" (CN 105062360B), a preparation method of a transparent superhydroph...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M11/46D06M13/513D06M101/06
CPCD06M11/46D06M13/513D06M16/00D06M2101/06D06M2200/12D06M2200/25
Inventor 姚理荣董莉徐思峻孙启龙
Owner NANTONG UNIVERSITY
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