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Preparation method and application of cobalt titanate-titanium dioxide composite catalyst electrode

A composite catalyst, titanium dioxide technology, applied in chemical instruments and methods, water pollutants, water/sewage treatment and other directions, can solve the problems of high electrode preparation cost, poor effect, poor corrosion resistance and catalytic ability, etc. Low cost, small footprint, good stability

Active Publication Date: 2020-02-14
吉林省深美环境科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problems of high preparation cost, poor corrosion resistance and catalytic ability of the existing electrode and the poor effect of using it to treat dye wastewater, and provide a method for preparing a cobalt titanate-titanium dioxide composite catalyst electrode and applications

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  • Preparation method and application of cobalt titanate-titanium dioxide composite catalyst electrode
  • Preparation method and application of cobalt titanate-titanium dioxide composite catalyst electrode
  • Preparation method and application of cobalt titanate-titanium dioxide composite catalyst electrode

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specific Embodiment approach 1

[0040] Specific embodiment one: a kind of preparation method of cobalt titanate-titanium dioxide composite catalyst electrode is completed according to the following steps:

[0041] 1. Use sandpaper to polish and polish the surface of the Ti substrate to remove the oxide film on the surface of the Ti substrate to obtain a rough Ti substrate;

[0042] 2. Immerse the rough Ti matrix in a constant temperature water bath equipped with NaOH solution to remove oil, and use deionized water to clean it ultrasonically after taking it out to obtain the Ti matrix after oil removal;

[0043] 3. Immerse the degreased Ti substrate in an oxalic acid solution with a mass fraction of 20% to 60% for etching treatment, take it out and use deionized water to ultrasonically clean it, and then place it in an oxalic acid solution with a mass fraction of 1% to 10%. save for later use;

[0044] 4. Mix tetrabutyl titanate, surfactant, absolute ethanol and acetylacetone, and then stir to obtain mixed s...

specific Embodiment approach 2

[0067] Specific embodiment 2: The difference between this embodiment and specific embodiment 1 is: the sandpaper described in step 1 is 300 mesh to 400 mesh; the Ti substrate described in step 1 is pure titanium or titanium alloy; The base body has a width of 1 cm to 1.5 cm and a length of 5.5 cm to 6.5 cm. Other steps are the same as in the first embodiment.

specific Embodiment approach 3

[0068] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is: the amount fraction of NaOH solution described in step 2 is 20%~60%; The temperature of the constant temperature water bath described in step 2 50°C to 90°C; the degreasing time in step 2 is 30min to 40min, the time for ultrasonic cleaning in step 2 is 5min to 30min, and the power of ultrasonic cleaning is 200W to 300W. Other steps are the same as those in Embodiment 1 or 2.

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Abstract

The invention discloses a preparation method and application of cobalt titanate-titanium dioxide composite catalyst electrode, and relates to preparation method and application of an electrode. The purpose is to solve the problems of high preparation cost, poor corrosion resistance and catalytic ability of an existing electrode, and poor treatment effect of dye wastewater by using the existing electrode. The preparation method comprises the steps that 1, a Ti substrate is ground to remove an oxide layer; 2, degreasing is conducted; 3, etching treatment is conducted; 4, a mixed solution A is prepared; 5, a mixed solution B is prepared; 6, A mixed solution of catalyst precursor is prepared; 7, coating is conducted to obtain a cobalt titanate-titanium dioxide composite catalyst electrode. Thecobalt titanate-titanium dioxide composite catalyst electrode is used for electrically catalyzing and degrading dye wastewater. By using the prepared cobalt titanate-titanium dioxide composite catalyst electrode for electrically catalyzing and degrading dye wastewater, the side effects are less, and the degradation efficiency can reach 96% at 180min. The cobalt titanate-titanium dioxide compositecatalyst electrode can be obtained.

Description

technical field [0001] The invention relates to a preparation method and application of an electrode. Background technique [0002] Water pollution caused by harmful pollutants from dyes in industrial production is a global problem. Especially with the rapid development of synthetic dyes, dye technology has been widely used in many industries, such as textiles, colored paper, printing, etc. Most of the colored dye wastewater is not properly treated and discharged into the environment, resulting in severe degradation of the ecosystem. Therefore, the treatment of dye wastewater is particularly important today. Traditional wastewater treatment strategies are difficult to achieve ideal pollutant removal effects, such as biological oxidation, microbial degradation, photodegradation, uniform coagulation and adsorption of activated carbon. Therefore, there is an urgent need to develop a more efficient and feasible method to completely solve the problem of persistent dye removal ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/461C02F101/30
CPCC02F1/46109C02F2001/46133C02F2101/308
Inventor 董国华郎坤张文治王颖黄子恒隋丽丽苏立强赵云鹏杨培青李奕萱
Owner 吉林省深美环境科技有限公司