Preparation method of nano TiO2 film modified by metal oxide

An oxide and metal technology, applied in the field of preparation of metal oxide modified nano-TiO2 thin film materials, can solve the problems of reducing specific surface area, difficult process control, reducing reaction area, etc., achieves high photocatalytic degradation rate, is conducive to industrial production, The effect of easy reaction process

Inactive Publication Date: 2013-04-03
CHANGZHOU UNIV
View PDF0 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation method of nano TiO2 film modified by metal oxide
  • Preparation method of nano TiO2 film modified by metal oxide
  • Preparation method of nano TiO2 film modified by metal oxide

Examples

Experimental program
Comparison scheme
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, 5mmol vanadium pentoxide.

[0015] Steps: Coat the surface of the pretreated titanium sheet with 5 mmol of vanadium pentoxide with viscous polyvinyl alcohol after heating, and after drying, place the sample directly on the micro-arc oxidation equipment for micro-arc oxidation (experimental parameters are: Voltage 420V, preparation time 30min, Na in 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), and 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: Coat the surface of the pretreated titanium sheet with 20mmol silver oxide with viscous polyvinyl alcohol after heating, and after drying, place the sample directly on the micro-arc oxidation equipment for micro-arc oxidation (experimental parameters: voltage 420V , the preparation time is 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), and 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, 10mmol cerium oxide.

[0021] Steps: Coat the surface of the pretreated titanium sheet with 10mmol of cerium oxide with viscous polyvinyl alcohol after heating. After drying, place the sample directly on the micro-arc oxidation equipment for micro-arc oxidation (experimental parameters: voltage 420V , the preparation time is 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), and finally the prepared nano-TiO 2 The film was rinsed with deionized water and dried.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a preparation method of a nano TiO2 film modified by metal oxide. The method comprises the following steps: firstly, a pure titanium sheet is prepared into 25mm*15mm*2mm rectangular sheet; secondly, the titanium sheet is conducted to pretreatment, and pretreatment comprises sanding, oil removing, hydrochloric acidizing fluid rinsing, ultrasonic deionized water cleaning and vacuum drying; thirdly, 2 to 20mmol metal oxide required to be conducted to doping is respectively coated on the surface of the pretreated titanium sheet through heated viscous polyvinyl alcohol, after drying, and the titanium sheet is directly arranged on micro-arc oxidation equipment to be conducted to micro-arc oxidation, wherein the titanium sheet is served as a positive electrode to be dipped in treating fluid, a stainless steel container with a cooling system is served as a negative electrode, and experiment parameters are as follows: the voltage is 420V, the preparation time is 30min, the content of Na3PO4 in a phosphate electrolyte system is 10g/L, the content of NaF is 1g/L, and the temperature of electrolyte is controlled to be lower than 35 DEG C; and fourthly, a prepared nano TiO2 film is conducted to deionized water rinsing and drying. The nano TiO2 film has high photocatalytic degradation ratio, and is beneficial to industrial production.

Description

technical field [0001] The present invention relates to a kind of nano TiO 2 Thin film materials, especially a metal oxide modified 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...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): B01J23/06B01J23/22B01J23/50B01J23/10B01J23/14
Inventor 宋仁国李鑫伟项博王超
Owner CHANGZHOU UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap