Method for preparing multidimensional photocatalytic material

A technology of catalytic material and photocatalytic film, which is applied in the field of photocatalytic material preparation, can solve the problems of unstable plating solution, insufficient film binding force, uneven distribution, etc., and achieve improved photocatalytic performance, improved corrosion resistance, and corrosion resistance. strong effect

Inactive Publication Date: 2012-07-18
GUANGDONG UNIV OF TECH
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

For example, in the composite electroless plating process: ① Due to the nano-TiO 2 Difficult to disperse and easy to agglomerate, resulting in TiO 2 The inhomogeneity of distribution and the inhomogeneity of material properties; ②Due to the inhomogeneity of nano TiO 2 The existence of the plating solution causes the instability of the plating solution, which often causes the plating solution to deteriorate after being used for 2-3 times and cannot be used again; ③ TiO

Method used

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  • Method for preparing multidimensional photocatalytic material
  • Method for preparing multidimensional photocatalytic material
  • Method for preparing multidimensional photocatalytic material

Examples

Experimental program
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Embodiment 1

[0045] Embodiment 1: titanium dioxide / titanium / copper foam (abbreviation: TiO 2 / Ti / CF, where CF means copper foam) and titanium dioxide / titanium / brass foam (abbreviation: TiO 2 / Ti / BF, where BF stands for brass foam) series. Put copper foam or brass foam with a size of 10×5cm, a thickness of 0.5cm, and 20PPI in a sodium hydroxide (mass fraction: 4%) degreasing solution, degreasing at 50°C for 5 minutes, remove the grease on the surface, and wash with water; In 5% dilute sulfuric acid solution, pickle at 30°C for 1min, remove the oxide film on the surface, and wash with water; then ultrasonically clean with acetone, ethanol, and distilled water, and wash at 25°C for 10min; -0.05mm; in 4% sodium hydroxide solution, degreasing at 50°C for 5 minutes, washing with water; in etching solution containing 1% dilute nitric acid and 2% hydrofluoric acid, etch at room temperature for 10 seconds, remove Surface TiO 2 , washed with water; in the anodic oxidation solution containing 1...

Embodiment 2

[0046] Embodiment 2: titanium dioxide / titanium / nickel foam (abbreviation: TiO 2 / Ti / NF, where NF stands for nickel foam) and titanium dioxide / titanium / iron foam (abbreviation: TiO 2 / Ti / FF, where FF means ferrum foam) series. Put nickel foam or iron foam with a size of 10×5cm, a thickness of 0.5cm, and 25PPI in a degreasing solution prepared with a degreasing powder with a mass fraction of 6%, degreasing at 50°C for 5 minutes, remove the grease on the surface, and wash with water; In a 2% dilute sulfuric acid solution, pickle at 30°C for 1min to remove the oxide film on the surface, and wash with water; then ultrasonically clean with acetone, ethanol, and distilled water, and wash at 25°C for 10min; 0.01-0.05mm; in the degreasing solution prepared with 6% degreasing powder, degreasing at 50°C for 5 minutes, and washing with water; in the etching solution containing 1% dilute nitric acid and 2% hydrofluoric acid mixture, Etching at room temperature for 10s to remove TiO on th...

Embodiment 3

[0047] Embodiment 3: titanium dioxide / titanium / aluminum foam (abbreviation: TiO 2 / Ti / AF, where AF stands for aluminum foam) series. Put aluminum foam with a size of 10×5cm, a thickness of 0.5cm, and 25PPI in a sodium hydroxide (mass fraction: 4%) degreasing solution, degreasing at 50°C for 5 minutes, remove the grease on the surface, and wash with water; in 10% dilute In hydrochloric acid solution, pickle at 30°C for 1min, remove the oxide film on the surface, and wash with water; sequentially undergo ultrasonic cleaning with acetone, ethanol, and distilled water, and wash at 25°C for 10min; use magnetron sputtering to coat titanium with a film thickness of 0.01-0.05mm; In 4% sodium hydroxide solution, degreasing at 50°C for 5 minutes and washing with water; in an etching solution containing 1% dilute nitric acid and 2% hydrofluoric acid mixture, etch at room temperature for 10 seconds to remove TiO on the surface 2 , washed with water; in the anodic oxidation solution conta...

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Abstract

The invention provides a method for preparing a multidimensional photocatalytic material, comprising the following steps of: (1) preparing a titanium coating material; and (2) preparing a titanium dioxide photocatalytic film on the surface of the titanium coating. The titanium coating material is prepared through any one or the combination of chemical plating, electroplating, magnetron sputtering or plasma smelting coating. The method has the main advantages that: (1) the photocatalytic property is high. to the specific, as the whole surface is completely covered by TiO2. anatase and rutile are evenly inlaid together to play a part in photocatalysis. and therefore, the photocatalytic performance of the material is greatly improved, which is generally 3-20 times of that of the traditional material; (2) the stability is good, to be specific, in the use process, the inactivation of the photocatalyst is not easy to occur, and the photocatalyst is easy to regenerate and can be used a plurality of times; (3) the bonding force is powerful, to be specific, the layers of films penetrate through each other and are pinned one another, so that the problem that the traditional material is easy to fall off is avoided; and (4) the corrosion resistance is good, to be specific, as a substrate foam material is completely covered by the titanium metal and the corrosion resistance of titanium is excellent, the corrosion resistance of the material is improved by 3-10 times.

Description

technical field [0001] The invention is a preparation method of a multi-dimensional photocatalytic material, which involves preparation methods of titanium coating materials such as electroless plating, electroplating, magnetron sputtering and plasma fusion coating methods, as well as anodic oxidation methods, dipping and pulling methods, etc. The invention discloses a method for preparing titanium dioxide on the surface of a titanium coating; it is suitable for forming a photocatalytic film on the surface of various titanium materials; it belongs to the field of photocatalytic material preparation. Background technique [0002] Photocatalytic technology is a new environment-friendly technology, which has shown attractive application prospects in the fields of environment (elimination of chemical pollutants, antibacterial) and energy (photocatalytic water splitting to produce hydrogen). Various photocatalytic materials and photocatalytic products have begun to be applied in ...

Claims

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Application Information

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IPC IPC(8): B01J23/72B01J23/755B01J21/06B01J31/38B01J35/02
Inventor 张国庆阳楚雄熊亮李香邱勇萍
Owner GUANGDONG UNIV OF TECH
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