Preparation method for metal oxide modified nano-TiO2 film material

A thin film material and oxide technology, which is applied in the field of preparation of composite nano-TiO2 thin film materials, can solve the problems of difficult process control, reduce specific surface area, reduce reaction area, etc. easy effect

Inactive Publication Date: 2013-04-17
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the preparation of nano-TiO 2 The method generally has defects such as high cost, difficult process control, unfavorable recycling, and easily lost granular powder.
Unable to satisfy people's demand for high-quality TiO 2 Practical needs of photocatalysts
At present, nano-TiO in the form of thin films 2 Photocatalysts have gradually repl

Method used

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  • Preparation method for metal oxide modified nano-TiO2 film material
  • Preparation method for metal oxide modified nano-TiO2 film material
  • Preparation method for metal oxide modified nano-TiO2 film material

Examples

Experimental program
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Effect test

Embodiment 1

[0014] Raw materials: 25mm×15mm×2mm rectangular pure titanium sheet, 10g / L Na 3 PO 4 Solution, 1g / L NaF solution, 10mmol cerium oxide.

[0015] Steps: Place the pretreated titanium sheet on the micro-arc oxidation equipment (experimental parameters are: voltage 420V, preparation time 30min, Na in the phosphate electrolyte system 3 PO 4 The concentration is 10g / L, the NaF concentration is 1g / L, and the electrolysis temperature is controlled below 35°C), 10mmol of cerium oxide is added to the electrolyte, and the reaction is carried out under magnetic stirring, so that the doping and micro-arc oxidation proceed simultaneously. Finally, the prepared nano-TiO 2 The film was rinsed with deionized water and dried.

Embodiment 2

[0017] Raw materials: 25mm×15mm×2mm rectangular pure titanium sheet, 10g / L Na 3 PO 4 Solution, 1g / L NaF solution, 20mmol silver oxide.

[0018] Steps: Place the pretreated titanium sheet on the micro-arc oxidation equipment (experimental parameters are: voltage 420V, preparation time 30min, Na in the phosphate electrolyte system 3 PO 4 The concentration is 10g / L, the NaF concentration is 1g / L, and the electrolysis temperature is controlled below 35°C), 20mmol of silver oxide is added to the electrolyte, and the reaction is carried out under magnetic stirring, so that the doping and micro-arc oxidation proceed simultaneously. Finally, the prepared nano-TiO 2 The film was rinsed with deionized water and dried.

Embodiment 3

[0020] Raw materials: 25mm×15mm×2mm rectangular pure titanium sheet, 10g / L Na 3 PO 4 Solution, 1g / L NaF solution, 5mmol vanadium pentoxide.

[0021] Steps: Place the pretreated titanium sheet on the micro-arc oxidation equipment (experimental parameters are: voltage 420V, preparation time 30min, Na in the phosphate electrolyte system 3 PO 4 The concentration is 10g / L, the NaF concentration is 1g / L, and the electrolysis temperature is controlled below 35°C), 5mmol of vanadium pentoxide is added to the electrolyte, and the reaction is carried out under magnetic stirring, so that the doping and micro-arc oxidation are simultaneously Carried out, finally the prepared nano-TiO 2 The film was rinsed with deionized water and dried.

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Abstract

The invention discloses a preparation method for a metal oxide modified nano-TiO2 film material. The method comprises the following steps: (1) a pure titanium sheet is prepared to a rectangular sheet with dimensions of 25 mm*15 mm*2 mm; (2) the titanium sheet is pretreated through sanding, oil removing, hydrochloric acid liquid rinsing, ultrasonic de-ionized water cleaning and vacuum drying; (3) the pretreated titanium sheet is placed on micro-arc oxidization equipment; the experiment parameters are as follows: the voltage is 420 V; the preparation time is 30 min; the concentration of Na3PO4 in a phosphate electrolyte system is 10 g/L; the concentration of NaF is 1 g/L; the electrolytic temperature is controlled below 35 DEG C; then 2-20 mmol metal oxide is added in the electrolyte, and is reacted under the magnetic stirring so as to synchronously implement the doping and the micro-arc oxidization, wherein the titanium sheet as anode is dipped in treating agent; and a stainless steel vessel provided with a cooling system is used as cathode; and (4) the prepared nano-TiO2 film is rinsed by de-ionized water and is dried. The nano-TiO2 film prepared by the method has high photocatalytic degradation rate, and brings convenience to industrial production.

Description

technical field [0001] The present invention relates to a kind of nano TiO 2 Thin film materials, especially a composite nano-TiO 2 Preparation method of thin film material. Background technique [0002] Among many semiconductor photocatalysts, TiO 2 Because of its strong oxidation ability, good chemical stability, high catalytic activity, and non-toxicity, it is at the core of photocatalytic research. As a semiconductor material, nano-titanium dioxide is non-toxic, cheap, high-activity, and high-stability. And other characteristics are widely used in self-cleaning, environmental pollution control and other fields. However, the preparation of nano-TiO 2 The method of this method generally has defects such as high cost, difficult control of the process, and unfavorable recovery and easy-to-lose granular powder of the obtained product. Unable to satisfy people's demand for high-quality TiO 2 Practical needs for photocatalysts. At present, nano-TiO in the form of thin fi...

Claims

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Application Information

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IPC IPC(8): B01J23/10B01J23/50B01J23/22B01J23/14B01J23/06B01J37/34
Inventor 宋仁国李鑫伟项博王超
Owner CHANGZHOU UNIV
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