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Bergmeal particle loaded nano TiO2 preparation method

A technology of diatomite and microparticles, applied in chemical instruments and methods, catalyst activation/preparation, light water/sewage treatment, etc., can solve the problems of preparation method and loading mechanism discussion, achieve strong loading binding force and simple preparation process , low-cost effect

Inactive Publication Date: 2007-05-30
TIANJIN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The above-mentioned literature discusses the treatment effect on the product. For the preparation method, the simple impregnation method or the sol-gel method is used, and the preparation method and loading mechanism are not discussed.

Method used

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  • Bergmeal particle loaded nano TiO2 preparation method

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Effect test

example 1

[0016] Take 3g of urea and add water to 50ml, add 0.16g of diatomite particles, stir, and prepare 6 parts of such a suspension; take 4ml of 0.5mol / L titanyl sulfate solution and add water to 50ml, and prepare 6 parts of the solution. Corresponding to mixing respectively, the numbers of the mixtures are 1, 2, 3, 4, 5, and 6 respectively. Use concentrated sulfuric acid with a mass concentration of 98% to adjust the pH values ​​of the above six mixed solutions to 0.5, 1, 1.5, 2, 2.5, and 3 respectively, and stir and react in a water bath at 75°C for 2 hours, filter respectively, and store at 120°C After drying for 1 hour and roasting at 500°C for 2 hours, 6 kinds of diatomite-loaded nano-titanium dioxide products were prepared respectively. The conclusion obtained by SEM scanning analysis is that when the pH value is 1.5, the prepared diatomite-loaded nano-titanium dioxide The particle size of titanium dioxide in the product is the smallest, its loading rate is the largest, and t...

example 2

[0018] Separately prepare TiOSO 4 Solutions with a concentration of 0.005mol / L, 0.01mol / L, 0.02mol / L, 0.04mol / L, 0.08mol / L, and 0.1mol / L; take 3g of urea and dissolve it in 50ml of deionized water to prepare such a solution6 Parts, diatomaceous earth content of 0.04g, 0.08g, 0.32g, 0.48g, 0.64g, 0.8g corresponding to the urea solution. Mix the above 6 parts of TiOSO separately 4 Solution and urea-diatomaceous earth suspension, the mixture numbers are 1, 2, 3, 4, 5, 6 respectively. Stir and react in a water bath at 75°C for 2 hours at pH 1.5, filter, dry at 120°C for 1 hour, and roast at 500°C for 2 hours to prepare 6 products. TiSO was calculated and analyzed by SEM scanning. 4 When the concentration is 0.01mol / L, the prepared product has a uniform particle size, a large loading rate, and no agglomeration.

example 3

[0020] Take 2ml of 0.5mol / L TiOSO 4 Add water to the solution to 50ml, and prepare 6 parts of the solution; take 3g of urea and add water to 50ml, make 6 parts of such a solution, weigh and TiO 2 Diatomaceous earth with a mass ratio of 1:4, 1:2, 1:1, 2:1, 3:1, 4:1 was added to the above 6 parts of urea solution respectively. Mix the above 6 parts of TiOSO separately 4 Solution and urea-diatomaceous earth suspension, the mixture numbers are 1, 2, 3, 4, 5, 6 respectively. Adjust the pH value to 1.5, stir and react in a water bath at 75°C for 2 hours, filter, dry at 120°C for 1 hour, and roast at 500°C for 2 hours to prepare 6 products. TiO 2 When the mass ratio is 2:1, the product obtained has small particle size, high loading rate, tight combination and no agglomeration.

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Abstract

It relates to a bergmeal particles loading nanometer TiO2 in the filed of photo catalytic material field. Using dilute sulphuric acid scrubbing bergmeal for several times, washing with iconic solution, it gets rid of icons like Al, Fe,Ca,Mg and drying, making 0.05-0.5mol / L aquadrate solution, adding with bergmeal particles 0.4-6.4g / L into a detergent, making 0.01-0.05mol / L basic titanium sulfate solution and mixing them of same volumes, adjusting PH value to 1-3, heating the mixture in 50-90DEG C temperature, blending, depositing, filtering, washing deposits with iconic solutions for several timees, drying, calcining in 300-800DEG C oven to make the product. It is simple in structure with high negative loading and tightly binding product, suitable for treating formaldehyde gas inside the house, regulating water microcirculation. It can also be used for making fillers of varied shapes, for the drawing and degrading of organics in the waste water, and the recovery of the product.

Description

technical field [0001] The invention relates to a kind of diatomite particle loaded nano TiO 2 The preparation method belongs to the technical field of photocatalyst materials. Background technique [0002] Nano-titanium dioxide is resistant to acid and alkali, light and chemical corrosion, and can use the ultraviolet light contained in sunlight as an excitation light source to generate surface photogenerated holes with strong catalytic oxidation ability. Antibacterial, super hydrophilic anti-fog and other aspects have been widely used. Therefore, in solving the problem of environmental pollution, the photocatalytic technology of nano-titanium dioxide has increasingly become a research hotspot at home and abroad. However, due to the disadvantages of difficult recovery and easy aggregation of the suspended phase photocatalytic system in wastewater and waste gas treatment, the industrialization of titanium dioxide photocatalysts is seriously res...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J37/02B01J37/12B01J21/06B01J21/08A61L9/22C02F1/30
CPCY02W10/37
Inventor 康勇俞成林赵薇
Owner TIANJIN UNIV
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