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Method for preparing rubidium sulfate-doped improved titanium-based TiO2 film photocatalyst

A technology of photocatalyst and rubidium sulfate, applied in physical/chemical process catalysts, chemical instruments and methods, chemical/physical processes, etc., can solve the problems of inability to absorb visible light and poor photocatalytic effect, so as to improve photocatalytic degradation efficiency, Improvement of utilization efficiency and high efficiency effect

Inactive Publication Date: 2016-10-12
JILIN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The main purpose of the present invention is to overcome TiO 2 Can not absorb visible light, the problems and defects of poor photocatalytic effect in the visible light range, prepared a new type of rubidium sulfate doped modified titanium-based TiO 2 Thin film photocatalyst material, and its preparation method is provided

Method used

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  • Method for preparing rubidium sulfate-doped improved titanium-based TiO2 film photocatalyst
  • Method for preparing rubidium sulfate-doped improved titanium-based TiO2 film photocatalyst
  • Method for preparing rubidium sulfate-doped improved titanium-based TiO2 film photocatalyst

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Embodiment 1

[0042] Rubidium sulfate-doped modified titanium-based TiO 2 Thin film photocatalyst material, using in-situ growth synthesis method, doped with Rb 2 SO 4 For TiO 2 The surface structure of the film is modified, and the original TiO 2 An oxidized film is formed on the surface of the film, which is composed of a microsphere structure, and is applied to photocatalytic degradation of organic dyes.

[0043] The rubidium sulfate-doped modified titanium-based TiO described in this article 2 The preparation method of the thin film photocatalyst material includes the following steps:

[0044] Step 1: Polishing the titanium sheet

[0045] The titanium sheet is first physically polished, and the titanium sheet is polished with 600Cw, 800Cw, 1000Cw, 1200Cw sandpaper, and cut into a uniform 3cm×1.5cm specification; then the above titanium sheet is chemically polished, and the physically polished Titanium sheet immersed in HF and HNO 3 Polished in a polishing liquid with a volume ratio of 1:10 for...

Embodiment 2

[0056] Rubidium sulfate-doped modified titanium-based TiO 2 Thin film photocatalyst material, using in-situ growth synthesis method, using hydrothermal synthesis method, doped with Rb 2 SO 4 For TiO 2 The surface structure of the film is modified, and the original TiO 2 An oxidized film is formed on the surface of the film, which is composed of a microsphere structure, and is applied to photocatalytic degradation of organic dyes.

[0057] The rubidium sulfate-doped modified titanium-based TiO described in this article 2 The preparation method of the thin film photocatalyst material includes the following steps:

[0058] Step 1: Polishing the titanium sheet

[0059] The titanium sheet is first physically polished, and the titanium sheet is polished with 600Cw, 800Cw, 1000Cw, 1200Cw sandpaper, and cut into a uniform 3cm×1.5cm specification; then the above titanium sheet is chemically polished, and the physically polished Titanium sheet immersed in HF and HNO 3 Polished in a polishing l...

Embodiment 3

[0070] Rubidium sulfate-doped modified titanium-based TiO 2 Thin film photocatalyst material, using in-situ growth synthesis method, using hydrothermal synthesis method, doped with Rb 2 SO 4 For TiO 2 The surface structure of the film is modified, and the original TiO 2 An oxidized film is formed on the surface of the film, which is composed of a microsphere structure, and is applied to photocatalytic degradation of organic dyes.

[0071] The rubidium sulfate-doped modified titanium-based TiO described in this article 2 The preparation method of the thin film photocatalyst material includes the following steps:

[0072] Step 1: Polishing the titanium sheet

[0073] The titanium sheet is first physically polished, and the titanium sheet is polished with 600Cw, 800Cw, 1000Cw, 1200Cw sandpaper, and cut into a uniform 3cm×1.5cm specification; then the above titanium sheet is chemically polished, and the physically polished Titanium sheet immersed in HF and HNO 3 Polished in a polishing l...

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Abstract

The invention discloses a novel method for preparing a rubidium sulfate (Rb2SO4) modified titanium-based TiO2 film photocatalyst and application thereof to the aspect of photocatalytic degradation of organic pollutants. The preparation method comprises a step 1) of titanium sheet polishing, a step 2) of hydrothermal preparation, a step 3) of natural cooling and airing and a step 4) of calcination for finally obtaining the rubidium sulfate modified titanium-based TiO2 film photocatalyst. Moreover, through calcination of titanium-based TiO2 titanium sheets at different preparation time, the photodegradation capability of organic dyes under different morphologies is explored. Through in-situ growth of the TiO2 sheets and the doping of different elements for modification of the surface structure of the TiO2 sheets, the photocatalyst which is efficient and low in cost is prepared; and the photocatalyst is applied to the process of degrading printing and dyeing wastewater. TiO2 is modified in a metal and non-metal co-doping mode, and the mass transfer of pollutants to the photocatalyst can be quickened, so as to improve photocatalytic degradation efficiency of the photocatalyst.

Description

Technical field [0001] The invention belongs to the field of new technology material synthesis, and discloses a kind of TiO modified by rubidium sulfate 2 The preparation method of the sheet and its application in photodegradation of organic pollutants. The catalyst is mainly used to degrade organic pollutants, especially in the treatment of printing and dyeing wastewater. Background technique [0002] 1. With the continuous development of today's society, the development of the chemical industry has also been greatly promoted, and industrial wastewater has also become a major factor in environmental pollution. One of the most serious environmental pollution industries in the chemical industry is the printing and dyeing industry. The source and pollutant composition of the dye wastewater produced by it are very complex, and it is one of the more difficult industrial wastewaters to treat. Direct discharge of printing and dyeing wastewater will bring great harm to human health and...

Claims

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Application Information

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IPC IPC(8): B01J27/055B01J35/02
CPCB01J27/055B01J35/00B01J35/30B01J35/39
Inventor 康春莉王宇寒田涛陈柏言包思琪钟宇博黄冬梅
Owner JILIN UNIV
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